A Depression and Deep Depressions are categories used by the India Meteorological Department (IMD) to classify tropical cyclones, within the North Indian Ocean tropical cyclone basin between the Malay Peninsula and the Arabian Peninsula.
A Depression and Deep Depressions are categories used by the India Meteorological Department (IMD) to classify tropical cyclones, within the North Indian Ocean tropical cyclone basin between the Malay Peninsula and the Arabian Peninsula.
The North Indian Ocean tropical cyclone basin is located to the north of the Equator, and encompasses the Bay of Bengal and the Arabian Sea, between the Malay Peninsula and the Arabian Peninsula. [1] [2] The basin is officially monitored by the India Meteorological Department's Regional Specialized Meteorological Centre in New Delhi, however, other national meteorological services such as the Bangladesh and Pakistan Meteorological Department's also monitor the basin. [1] [2]
| Name | Duration | Peak intensity | Areas affected | Damage (USD) | Deaths | Refs | ||
|---|---|---|---|---|---|---|---|---|
| Wind speed | Pressure | |||||||
| Unnamed | May 19 - 27, 1891 | Depression | Not Specified | Not Specified | Sri Lanka, Tamil Nadu, Andrah Pradesh, Orissa | [3] | ||
| Unnamed | June 29, 1967 | Depression | Not Specified | Not Specified | [4] | |||
| Unnamed | July 26 – 29, 1967 | Deep Depression | Not Specified | Not Specified | [4] | |||
| Unnamed | July 31 – August 2, 1967 | Deep Depression | Not Specified | Not Specified | [4] | |||
| Unnamed | August 18 – 19, 1967 | Depression | Not Specified | Not Specified | [4] | |||
| Unnamed | September 2 – 7, 1967 | Deep Depression | Not Specified | Not Specified | [4] | |||
| Land | September 20, 1967 | Depression | Not Specified | Not Specified | [4] | |||
| Unnamed | September 27 – 29, 1967 | Deep Depression | Not Specified | Not Specified | [4] | |||
| Unnamed | October 31 – November 2, 1967 | Depression | Not Specified | Not Specified | [4] | |||
| Unnamed | November 27 – 29, 1967 | Depression | Not Specified | Not Specified | [4] | |||
| Unnamed | June 12 – 14, 1968 | Depression | Not Specified | Not Specified | [5] | |||
| Land | July 9 – 11, 1968 | Depression | Not Specified | Not Specified | West Bengal | 100 | [5] | |
| Unnamed | July 26 – August 2, 1968 | Deep Depression | Not Specified | Not Specified | [5] | |||
| Unnamed | August 3 – 8, 1968 | Deep Depression | Not Specified | Not Specified | [5] | |||
| Unnamed | August 11 – 14, 1968 | Depression | Not Specified | Not Specified | West Bengal | [5] | ||
| Unnamed | August 22 – 24, 1968 | Depression | Not Specified | Not Specified | [5] | |||
| Unnamed | June 5 – 7, 1969 | Depression | Not Specified | Not Specified | Gujarat | [6] | ||
| Unnamed | June 16 – 20, 1969 | Depression | Not Specified | Not Specified | Bangladesh | [6] | ||
| Unnamed | July 28 – August 1, 1969 | Deep Depression | Not Specified | Not Specified | Orissa | [6] | ||
| Unnamed | August 8, 1969 | Depression | Not Specified | Not Specified | Sunderbans | [6] | ||
| Unnamed | September 6 – 11, 1969 | Depression | Not Specified | Not Specified | Orissa | [6] | ||
| Unnamed | September 18 – 23, 1969 | Deep Depression | Not Specified | Not Specified | Indochina, Bangladesh, West Bengal | [6] | ||
| Unnamed | September 23 – 26, 1969 | Depression | Not Specified | Not Specified | Sri Lanka, Tamil Nadu | [6] | ||
| Unnamed | May 23 – 24, 1970 | Depression | Not Specified | Not Specified | Bangladesh, Myanmar | [7] | ||
| Unnamed | June 29 – July 3, 1970 | Deep Depression | Not Specified | Not Specified | Orissa | [7] | ||
| Unnamed | July 6 – 8, 1970 | Deep Depression | Not Specified | Not Specified | Burma, Orissa | [7] | ||
| Unnamed | August 17 – 19, 1970 | Deep Depression | Not Specified | Not Specified | Burma, Orissa | [7] | ||
| Unnamed | September 8 – 18, 1970 | Deep Depression | Not Specified | Not Specified | Burma, West Bengsl | [7] | ||
| Unnamed | September 21 – 23, 1970 | Depression | Not Specified | Not Specified | Andrah Pradesh | [7] | ||
| Unnamed | October 11 – 13, 1970 | Depression | Not Specified | Not Specified | Saudi Arabia | [7] | ||
| Unnamed | November 19 – 20, 1970 | Deep Depression | Not Specified | Not Specified | Tamil Nadu | [7] | ||
| Unnamed | June 1 – 4, 1971 | Deep Depression | Not Specified | Not Specified | Gugarat | [8] | ||
| Unnamed | June 20 – 23, 1971 | Deep Depression | Not Specified | Not Specified | Orissa | [8] | ||
| Unnamed | July 15 – 22, 1971 | Depression | Not Specified | Not Specified | West Bengal | [8] | ||
| Land | July 26 – 29, 1971 | Depression | Not Specified | Not Specified | West Bengal | [8] | ||
| Unnamed | August 7 – 9, 1971 | Deep Depression | Not Specified | Not Specified | West Bengal | [8] | ||
| Land | August 30 – September 1, 1971 | Depression | Not Specified | Not Specified | Madhya Pradesh | [8] | ||
| Unnamed | September 24 – 25, 1971 | Depression | Not Specified | Not Specified | Andrah Pradesh | [8] | ||
| Unnamed | October 14 – 17, 1971 | Deep Depression | Not Specified | Not Specified | Andrah Pradesh | [8] | ||
| Unnamed | June 25 – 27, 1972 | Depression | Not Specified | Not Specified | Oman | [9] | ||
| Unnamed | July 1 – 2, 1972 | Depression | Not Specified | Not Specified | Oman | [9] | ||
| Unnamed | July 5 – 6, 1972 | Depression | Not Specified | Not Specified | Madhya Pradesh | [9] | ||
| Land | August 5 – 12, 1972 | Deep Depression | Not Specified | Not Specified | West Bengal, Bangladesh | [9] | ||
| Unnamed | August 12 – 20, 1972 | Deep Depression | Not Specified | Not Specified | Madhya Pradesh | [9] | ||
| Land | August 28 – 31, 1972 | Depression | Not Specified | Not Specified | Madhya Pradesh | [9] | ||
| Unnamed | October 2 – 5, 1972 | Deep Depression | Not Specified | Not Specified | Andrah Pradesh, Orissa | [9] | ||
| Unnamed | November 13 – 21, 1972 | Deep Depression | Not Specified | Not Specified | Somalia | [9] | ||
| Unnamed | November 27 – 29, 1972 | Deep Depression | Not Specified | Not Specified | Myanmae | [9] | ||
| Sally | December 5 – 6, 1972 | Depression | Not Specified | Not Specified | Philippines, Vietnam, Thailand, Myanmar, Andaman and Nicobar Islands | [9] [10] | ||
| Unnamed | December 20, 1972 | Depression | Not Specified | Not Specified | Sri Lanka, Tamil Nadu | [9] | ||
| Unnamed | July 6 – 9, 1973 | Deep Depression | Not Specified | Not Specified | Orissa | [11] | ||
| Unnamed | July 12 – 14, 1973 | Deep Depression | Not Specified | Not Specified | Orissa | [11] | ||
| Unnamed | May 26 – 28, 1973 | Deep Depression | Not Specified | Not Specified | Gulf of Aden | [11] | ||
| Unnamed | July 7 – 8, 1973 | Depression | Not Specified | Not Specified | Gujarat | [11] | ||
| Unnamed | August 14 – 18, 1973 | Deep Depression | Not Specified | Not Specified | Uttar Pradesh | [11] | ||
| Unnamed | August 26 – 31, 1973 | Deep Depression | Not Specified | Not Specified | Orissa | [11] | ||
| Unnamed | September 2 – 5, 1973 | Depression | Not Specified | Not Specified | West Bengal | [11] | ||
| Unnamed | October 24 – 27, 1973 | Depression | Not Specified | Not Specified | [11] | |||
| Unnamed | December 13 – 15, 1973 | Deep Depression | Not Specified | Not Specified | Tamil Nadu | [11] | ||
| Unnamed | December 25 – 27, 1973 | Depression | Not Specified | Not Specified | Sri Lanka | [11] | ||
| Unnamed | June 15 – 18, 1974 | Deep Depression | Not Specified | Not Specified | Orissa | [12] | ||
| Unnamed | August 8 – 9, 1974 | Depression | Not Specified | Not Specified | Orissa | [12] | ||
| Unnamed | October 7 – 8, 1974 | Deep Depression | Not Specified | Not Specified | Orissa | [12] | ||
| Unnamed | October 14 – 15, 1974 | Depression | Not Specified | Not Specified | [12] | |||
| Unnamed | October 24 – 25, 1974 | Depression | Not Specified | Not Specified | Andrah Pradesh | [12] | ||
| Unnamed | January 6 – 10, 1975 | Deep Depression | Not Specified | Not Specified | Burma | [13] | ||
| Unnamed | May 29 – 31, 1975 | Depression | Not Specified | Not Specified | [13] | |||
| Unnamed | June 18 – 19, 1975 | Depression | Not Specified | Not Specified | Orissa | [13] | ||
| Unnamed | June 25 – 28, 1975 | Deep Depression | Not Specified | Not Specified | Orissa | [13] | ||
| Unnamed | July 18 – 22, 1975 | Deep Depression | Not Specified | Not Specified | West Bengal | [13] | ||
| Unnamed | August 5 – 7, 1975 | Depression | Not Specified | Not Specified | Orissa | [13] | ||
| Unnamed | August 17 – 24, 1975 | Deep Depression | Not Specified | Not Specified | West Bengal | [13] | ||
| Unnamed | September 9 – 12, 1975 | Depression | Not Specified | Not Specified | Orissa | [13] | ||
| Unnamed | September 25 – 27, 1975 | Deep Depression | Not Specified | Not Specified | West Bengal | [13] | ||
| Unnamed | October 2 – 5, 1975 | Depression | Not Specified | Not Specified | [13] | |||
| Unnamed | July 28 – August 1, 1976 | Deep Depression | Not Specified | Not Specified | Bangladesh, West Bengal | [14] | ||
| Unnamed | August 1 – 3, 1976 | Deep Depression | Not Specified | Not Specified | Orissa | [14] | ||
| Unnamed | August 12 – 18, 1976 | Deep Depression | Not Specified | Not Specified | Orissa | [14] | ||
| Unnamed | November 13 – 16, 1976 | Deep Depression | Not Specified | Not Specified | [14] | |||
| Unnamed | July 4 – 6, 1977 | Deep Depression | Not Specified | Not Specified | West Bengal | [15] | ||
| Unnamed | July 24 – 25, 1977 | Depression | Not Specified | Not Specified | [15] | |||
| Land | July 30 – 31, 1977 | Depression | Not Specified | Not Specified | [15] | |||
| Unnamed | August 4 – 9, 1977 | Deep Depression | Not Specified | Not Specified | [15] | |||
| Unnamed | August 19 – 23, 1977 | Deep Depression | Not Specified | Not Specified | [15] | |||
| Unnamed | August 30 – September 2, 1977 | Depression | Not Specified | Not Specified | [15] | |||
| Unnamed | September 4 – 6, 1977 | Deep Depression | Not Specified | Not Specified | [15] | |||
| Unnamed | September 8 – 15, 1977 | Deep Depression | Not Specified | Not Specified | [15] | |||
| Unnamed | September 30 – October 2, 1977 | Deep Depression | Not Specified | Not Specified | [15] | |||
| Unnamed | October 18 – 22, 1977 | Deep Depression | Not Specified | Not Specified | [15] | |||
| Unnamed | November 2 – 4, 1977 | Depression | Not Specified | Not Specified | [15] | |||
| Unnamed | November 9 – 14, 1977 | Depression | Not Specified | Not Specified | [15] | |||
| Unnamed | June 16 – 17, 1978 | Deep Depression | Not Specified | Not Specified | [16] | |||
| Unnamed | June 26 – 27, 1978 | Depression | Not Specified | Not Specified | [16] | |||
| Unnamed | July 11 – 13, 1978 | Depression | Not Specified | Not Specified | [16] | |||
| Unnamed | July 11 – 14, 1978 | Deep Depression | Not Specified | Not Specified | [16] | |||
| Unnamed | August 13 – 17, 1978 | Deep Depression | Not Specified | Not Specified | [16] | |||
| Unnamed | September 1 – 5, 1978 | Deep Depression | Not Specified | Not Specified | [16] | |||
| Unnamed | September 15 – 16, 1978 | Depression | Not Specified | Not Specified | [16] | |||
| Unnamed | September 21, 1978 | Depression | Not Specified | Not Specified | [16] | |||
| Unnamed | September 26 – 30, 1978 | Deep Depression | Not Specified | Not Specified | [16] | |||
| Unnamed | October 2 – 6, 1978 | Deep Depression | Not Specified | Not Specified | [16] | |||
| Unnamed | June 23 – 26, 1979 | Deep Depression | Not Specified | Not Specified | [17] | |||
| Unnamed | June 28 – July 1, 1979 | Deep Depression | Not Specified | Not Specified | [17] | |||
| Unnamed | July 7 – 8, 1979 | Depression | Not Specified | Not Specified | [17] | |||
| Unnamed | August 12 – 15, 1979 | Depression | Not Specified | Not Specified | [17] | |||
| Unnamed | October 29 – November 1, 1979 | Deep Depression | Not Specified | Not Specified | [17] | |||
| Unnamed | November 13 – 17, 1979 | Deep Depression | Not Specified | Not Specified | [17] | |||
| Unnamed | May 15 – 19, 1980 | Depression | Not Specified | Not Specified | [18] | |||
| Unnamed | June 4 – 6, 1980 | Depression | Not Specified | Not Specified | [18] | |||
| Land | June 20 – 25, 1980 | Depression | Not Specified | Not Specified | [18] | |||
| Land | August 10 – 11, 1980 | Depression | Not Specified | Not Specified | [18] | |||
| Land | August 25 – 30, 1980 | Depression | Not Specified | Not Specified | [18] | |||
| Unnamed | August 26, 1980 | Depression | Not Specified | Not Specified | [18] | |||
| Land | September 5 – 6, 1980 | Depression | Not Specified | Not Specified | [18] | |||
| Unnamed | September 16 – 21, 1980 | Deep Depression | Not Specified | Not Specified | [18] | |||
| Unnamed | October 1 – 4, 1980 | Depression | Not Specified | Not Specified | [18] | |||
| Unnamed | October 14 – 19, 1980 | Deep Depression | Not Specified | Not Specified | [18] | |||
| Unnamed | November 13 – 20, 1980 | Deep Depression | Not Specified | Not Specified | [18] | |||
| Unnamed | June 20 – 24, 1981 | Deep Depression | Not Specified | Not Specified | [19] | |||
| Unnamed | August 3 – 4, 1981 | Depression | Not Specified | Not Specified | [19] | |||
| Unnamed | August 12 – 16, 1981 | Depression | Not Specified | Not Specified | [19] | |||
| Land | September 9, 1981 | Depression | Not Specified | Not Specified | [19] | |||
| Unnamed | September 17 – 18, 1981 | Depression | Not Specified | Not Specified | [19] | |||
| Unnamed | October 31 – November 2, 1981 | Depression | Not Specified | Not Specified | [19] | |||
| Land | June 17 – 19, 1982 | Depression | 45 km/h (30 mph) | Not Specified | [20] [21] | |||
| ARB 13 | July 15 – 16, 1982 | Depression | 45 km/h (30 mph) | Not Specified | [20] [21] | |||
| BOB 03 | July 18 – 20, 1982 | Deep Depression | 55 km/h (35 mph) | Not Specified | [20] [21] | |||
| BOB 04 | August 12 – 13, 1982 | Depression | 45 km/h (30 mph) | Not Specified | [20] [21] | |||
| Land | August 2 – 4, 1982 | Depression | 45 km/h (30 mph) | Not Specified | [20] [21] | |||
| BOB 05 | August 18 – 19, 1982 | Depression | 45 km/h (30 mph) | Not Specified | West Bengal, Bangladesh | [20] [21] | ||
| Land | August 25, 1982 | Depression | 45 km/h (30 mph) | Not Specified | Uttar Pradesh | [20] [21] | ||
| BOB 06 | August 27 – September 2, 1982 | Depression | 45 km/h (30 mph) | Not Specified | [20] [21] | |||
| BOB 07 | September 9 – 10, 1982 | Depression | 45 km/h (30 mph) | Not Specified | [20] [21] | |||
| BOB 08 | September 29, 1982 | Depression | 45 km/h (30 mph) | Not Specified | [20] [21] | |||
| ARB 14 | October 1 – 2, 1982 | Deep Depression | 55 km/h (35 mph) | Not Specified | [20] [21] | |||
| BOB 11 | November 28 – 29, 1982 | Deep Depression | 55 km/h (35 mph) | Not Specified | [20] [21] | |||
| Unnamed | November 29 – 30, 1982 | Depression | 45 km/h (30 mph) | Not Specified | [20] [21] | |||
| BOB 12 | December 2 – 4, 1982 | Depression | 45 km/h (30 mph) | Not Specified | [20] [21] | |||
| ARB 01 | June 19 – 22, 1983 | Deep Depression | 55 km/h (35 mph) | Not Specified | Gujarat | [22] | ||
| BOB 02 | June 23 – 27, 1983 | Deep Depression | 55 km/h (35 mph) | Not Specified | [22] | |||
| Land | August 4 – 10, 1983 | Deep Depression | 55 km/h (35 mph) | Not Specified | [22] | |||
| Land | September 8 – 10, 1983 | Depression | 45 km/h (30 mph) | Not Specified | [22] | |||
| Land | December 21 – 23, 1983 | Depression | 45 km/h (30 mph) | Not Specified | Sri Lanka | [22] | ||
| ARB 01 | June 5 – 6, 1984 | Depression | 45 km/h (30 mph) | Not Specified | Gujarat | [23] | ||
| BOB 02 | July 30 – August 6, 1984 | Deep Depression | 55 km/h (35 mph) | Not Specified | [23] | |||
| BOB 03 | August 15 – 19, 1984 | Deep Depression | 55 km/h (35 mph) | Not Specified | [23] | |||
| ARB 07 | December 3 – 5, 1984 | Deep Depression | 55 km/h (35 mph) | Not Specified | [23] | |||
| BOB 03 | August 1 – 2, 1985 | Depression | Not Specified | Not Specified | ||||
| Land | August 5 – 6, 1985 | Depression | Not Specified | Not Specified | ||||
| BOB 04 | August 6 – 9, 1985 | Depression | Not Specified | Not Specified | ||||
| BOB 05 | August 14 – 15, 1985 | Depression | Not Specified | Not Specified | ||||
| Land | September 23 – 24, 1985 | Depression | Not Specified | Not Specified | ||||
| BOB 07 | October 1 – 2, 1985 | Depression | Not Specified | Not Specified | ||||
| ARB 07 | October 6 – 9, 1985 | Depression | Not Specified | Not Specified | ||||
| BOB 11 | November 12, 1985 | Depression | Not Specified | Not Specified | ||||
| BOB 01 | January 7 – 8, 1986 | Depression | Not Specified | Not Specified | ||||
| Land | July 22 – 23, 1986 | Depression | Not Specified | Not Specified | ||||
| Land | August 8 – 10, 1986 | Deep Depression | Not Specified | Not Specified | ||||
| BOB 04 | August 10 – 15, 1986 | Deep Depression | Not Specified | Not Specified | ||||
| BOB 05 | August 19 – 20, 1986 | Depression | Not Specified | Not Specified | ||||
| BOB 06 | September 24 – 26, 1986 | Depression | Not Specified | Not Specified | ||||
| ARB 08 | November 9 – 10, 1986 | Deep Depression | Not Specified | Not Specified | ||||
| Land | August 26 – 29, 1987 | Depression | Not Specified | Not Specified | ||||
| Land | September 11 – 12, 1987 | Depression | Not Specified | Not Specified | ||||
| Land | September 15 – 16, 1987 | Depression | Not Specified | Not Specified | ||||
| December 19 – 22, 1987 | Deep Depression | Not Specified | Not Specified | |||||
| June 8 – 10, 1988 | Deep Depression | Not Specified | Not Specified | |||||
| June 9 – 13, 1988 | Deep Depression | Not Specified | Not Specified | |||||
| July 17 – 18, 1988 | Depression | Not Specified | Not Specified | |||||
| August 2 – 6, 1988 | Deep Depression | Not Specified | Not Specified | |||||
| October 1 – 3, 1988 | Deep Depression | Not Specified | Not Specified | |||||
| December 6 – 8, 1988 | Depression | Not Specified | Not Specified | |||||
| June 9 – 12, 1989 | Deep Depression | Not Specified | Not Specified | |||||
| June 12 – 14, 1989 | Deep Depression | Not Specified | Not Specified | |||||
| June 20 – 21, 1989 | Depression | Not Specified | Not Specified | |||||
| August 16 – 17, 1989 | Deep Depression | Not Specified | Not Specified | |||||
| October 17 – 18, 1989 | Depression | Not Specified | Not Specified | |||||
| November 11, 1989 | Depression | Not Specified | Not Specified | |||||
| November 16 – 20, 1989 | Depression | Not Specified | Not Specified | |||||
| Land | May 15 – 16, 1990 | Depression | Not Specified | Not Specified | [24] | |||
| BOB 02 | June 13 – 15, 1990 | Deep Depression | 55 km/h (35 mph) | 990 hPa (29.23 inHg) | [20] [24] | |||
| BOB 03 | August 14 – 17, 1990 | Depression | 50 km/h (31 mph) | 993 hPa (29.32 inHg) | [20] [24] | |||
| BOB 04 | August 20 – 24, 1990 | Depression | 50 km/h (31 mph) | 986 hPa (29.12 inHg) | [20] [24] | |||
| BOB 05 | September 3 – 5, 1990 | Depression | 50 km/h (31 mph) | 986 hPa (29.12 inHg) | [20] [24] | |||
| BOB 06 | October 6 – 9, 1990 | Deep Depression | 50 km/h (31 mph) | 998 hPa (29.47 inHg) | [20] [24] | |||
| BOB 07 | October 31 – November 4, 1990 | Deep Depression | 50 km/h (31 mph) | 1001 hPa (29.56 inHg) | [20] [24] | |||
| BOB 08 | November 14, 1990 | Depression | 50 km/h (31 mph) | 1008 hPa (29.77 inHg) | [20] [24] | |||
| ARB 01 | November 16 – 18, 1990 | Deep Depression | 50 km/h (31 mph) | 1007 hPa (29.74 inHg) | [20] [24] | |||
| BOB 03 | July 27 – 31, 1991 | Deep Depression | 55 km/h (35 mph) | 984 hPa (29.06 inHg) | ||||
| BOB 04 | August 21 – 26, 1991 | Depression | 45 km/h (30 mph) | 992 hPa (29.29 inHg) | India | |||
| BOB 05 | September 21 – 22, 1991 | Depression | 45 km/h (30 mph) | 1000 hPa (29.53 inHg) | ||||
| BOB 06 | October 12 – 14, 1991 | Depression | 45 km/h (30 mph) | 998 hPa (29.47 inHg) | ||||
| BOB 07 | October 28 – 30, 1991 | Depression | 45 km/h (30 mph) | 998 hPa (29.47 inHg) | ||||
| BOB 02 | June 17 – 18 | Deep Depression | 55 km/h (35 mph) | 980 hPa (28.94 inHg) | Odisha | |||
| BOB 03 | July 25 – 27 | Deep Depression | 55 km/h (35 mph) | 984 hPa (29.06 inHg) | ||||
| BOB 04 | October 6 – 9, 1992 | Deep Depression | 55 km/h (35 mph) | 998 hPa (29.47 inHg) | Andhra Pradesh | |||
| ARB 03 | November 30 – December 3, 1992 | Depression | 45 km/h (30 mph) | 987 hPa (29.15 inHg) | ||||
| ARB 04 | December 20 – 24, 1992 | Deep Depression | 55 km/h (35 mph) | 1002 hPa (29.59 inHg) | ||||
| BOB 01 | June 17 – 19, 1993 | Deep Depression | 55 km/h (35 mph) | 988 hPa (29.18 inHg) | ||||
| BOB 03 | December 19 – 20, 1993 | Deep Depression | 55 km/h (35 mph) | 1006 hPa (29.71 inHg) | ||||
| BOB 01 | March 21 – 24, 1994 | Depression | 45 km/h (30 mph) | Not Specified | None | None | None | |
| Unnamed | August 17 - 20, 1994 | Deep Depression | 55 km/h (35 mph) | 988 hPa (29.18 inHg) | India, Pakistan | None | None | |
| Unnamed | October 4 - 7, 1994 | Deep Depression | 55 km/h (35 mph) | 998 hPa (29.47 inHg) | India | 38 | ||
| Unnamed | November 4 - 5, 1994 | Depression | 45 km/h (30 mph) | Not Specified | Southern India | None | None | |
| BOB 01 | May 5 - 7, 1995 | Deep depression | 55 km/h (35 mph) | 996 hPa (29.41 inHg) | South India | 39 | [20] | |
| BOB 02 | May 8 – 10, 1995 | Deep depression | 55 km/h (35 mph) | 996 hPa (29.41 inHg) | South India | |||
| BOB 03 | May 14 – 18, 1995 | Deep depression | 55 km/h (35 mph) | 996 hPa (29.41 inHg) | Odisha | 107 | Unknown | [20] |
| BOB 04 | September 15 – 17, 1995 | Depression | 45 km/h (30 mph) | 998 hPa (29.47 inHg) | Myanmar, Odisha, East India | None | None | |
| BOB 05 | September 26 – 28, 1995 | Depression | 45 km/h (30 mph) | 1000 hPa (29.53 inHg) | West Bengal, East India | None | None | |
| ARB 02 | June 10 – 13, 2004 | Deep Depression | 55 km/h (35 mph) | 992 hPa (29.29 inHg) | ||||
| BOB 02 | June 11 – 14, 2004 | Deep Depression | 55 km/h (35 mph) | 992 hPa (29.29 inHg) | ||||
| Land | September 12 – 15, 2004 | Depression | 45 km/h (30 mph) | 996 hPa (29.41 inHg) | ||||
| Land | October 2 – 10, 2004 | Depression | 45 km/h (30 mph) | 996 hPa (29.41 inHg) | ||||
| ARB 01 | June 21 – 22, 2005 | Depression | 45 km/h (30 mph) | 992 hPa (29.29 inHg) | ||||
| Land | June 27 – July 5, 2005 | Depression | 45 km/h (30 mph) | 990 hPa (29.23 inHg) | ||||
| BOB 02 | July 29 – 31, 2005 | Deep Depression | 55 km/h (35 mph) | 988 hPa (29.18 inHg) | ||||
| BOB 03 | September 12 – 16, 2005 | Depression | 45 km/h (30 mph) | 992 hPa (29.29 inHg) | ||||
| ARB 02 | September 14 – 16, 2005 | Depression | 45 km/h (30 mph) | 996 hPa (29.41 inHg) | ||||
| BOB 04 | October 26 – 29, 2005 | Deep Depression | 55 km/h (35 mph) | 1000 hPa (29.53 inHg) | ||||
| BOB 05 | November 20 – 22, 2005 | Depression | 45 km/h (30 mph) | 1002 hPa (29.59 inHg) | ||||
| BOB 08 | December 15 – 22, 2005 | Deep Depression | 55 km/h (35 mph) | 1000 hPa (29.53 inHg) | ||||
| ARB 01 | January 13 – 14, 2006 | Deep Depression | 55 km/h (35 mph) | 1004 hPa (29.65 inHg) | ||||
| BOB 02 | July 2 – 5, 2006 | Deep Depression | 55 km/h (35 mph) | 982 hPa (29.00 inHg) | ||||
| BOB 03 | August 2 – 5, 2006 | Deep Depression | 55 km/h (35 mph) | 986 hPa (29.12 inHg) | ||||
| BOB 04 | August 12 – 13, 2006 | Depression | 45 km/h (30 mph) | 992 hPa (29.29 inHg) | ||||
| BOB 05 | August 16 – 18, 2006 | Depression | 45 km/h (30 mph) | 988 hPa (29.18 inHg) | ||||
| BOB 06 | August 29 – September 1, 2006 | Depression | 45 km/h (30 mph) | 990 hPa (29.23 inHg) | ||||
| BOB 07 | September 3 – 4, 2006 | Depression | 45 km/h (30 mph) | 992 hPa (29.29 inHg) | ||||
| Land | September 21 – 24, 2006 | Depression | 45 km/h (30 mph) | 996 hPa (29.41 inHg) | ||||
| BOB 08 | September 28 – 30, 2006 | Depression | 45 km/h (30 mph) | 1002 hPa (29.59 inHg) | ||||
| BOB 01 | May 1 – 5, 2007 | Depression | 45 km/h (30 mph) | 998 hPa (29.47 inHg) | ||||
| BOB 04 | June 28 – 30, 2007 | Deep Depression | 55 km/h (35 mph) | 989 hPa (29.21 inHg) | ||||
| BOB 05 | July 4 – 9, 2007 | Deep Depression | 55 km/h (35 mph) | 988 hPa (29.18 inHg) | ||||
| BOB 06 | August 5 – 7, 2007 | Deep Depression | 55 km/h (35 mph) | 984 hPa (29.06 inHg) | ||||
| BOB 07 | September 21 – 24, 2007 | Depression | 45 km/h (30 mph) | 990 hPa (29.23 inHg) | ||||
| BOB 08 | October 27 – 29, 2007 | Depression | 45 km/h (30 mph) | 1004 hPa (29.65 inHg) | ||||
| ARB 02 | October 27 – November 2, 2007 | Deep Depression | 55 km/h (35 mph) | 1000 hPa (29.53 inHg) | ||||
| ARB 01 | June 5 – 7, 2008 | Depression | 45 km/h (30 mph) | 994 hPa (29.35 inHg) | ||||
| BOB 02 | June 16 – 18, 2008 | Depression | 45 km/h (30 mph) | 988 hPa (29.18 inHg) | ||||
| BOB 03 | August 9–10, 2008 | Depression | 45 km/h (30 mph) | 1004 hPa (29.65 inHg) | ||||
| BOB 04 | September 14 – 19, 2008 | Deep Depression | 55 km/h (35 mph) | 986 hPa (29.12 inHg) | ||||
| ARB 02 | October 19 – 23, 2008 | Deep Depression | 55 km/h (35 mph) | 1000 hPa (29.53 inHg) | ||||
| BOB 08 | December 4–8, 2008 | Deep Depression | 55 km/h (35 mph) | 996 hPa (29.41 inHg) | Sri Lanka, India | None | 0 | |
| ARB 01 | June 23 – 24, 2009 | Depression | 45 km/h (30 mph) | 998 hPa (29.47 inHg) | India | 9 | ||
| ARB 02 | June 25 – 26, 2009 | Depression | 45 km/h (30 mph) | 998 hPa (29.47 inHg) | India | |||
| BOB 03 | July 20 – 21, 2009 | Deep Depression | 55 km/h (35 mph) | 988 hPa (29.18 inHg) | ||||
| BOB 04 | September 5 – 7, 2009 | Deep Depression | 55 km/h (35 mph) | 990 hPa (29.23 inHg) | ||||
| BOB 02 | October 7 – 9, 2010 | Depression | 45 km/h (30 mph) | 996 hPa (29.41 inHg) | ||||
| BOB 03 | October 13 – 16, 2010 | Deep Depression | 65 km/h (40 mph) | 995 hPa (29.38 inHg) | ||||
| BOB 06 | December 7 – 8, 2010 | Depression | 45 km/h (30 mph) | 1000 hPa (29.53 inHg) | ||||
| BOB 01 | February 2 – 3, 2011 | Depression | 45 km/h (30 mph) | 1000 hPa (29.53 inHg) | ||||
| ARB 01 | June 11 – 12, 2011 | Depression | 45 km/h (30 mph) | 996 hPa (29.41 inHg) | ||||
| BOB 02 | June 16 – 23, 2011 | Deep Depression | 65 km/h (40 mph) | 978 hPa (28.88 inHg) | ||||
| Land | July 22 – 23, 2011 | Depression | 37 km/h (23 mph) | 990 hPa (29.23 inHg) | ||||
| BOB 03 | September 22 – 23, 2011 | Depression | 45 km/h (30 mph) | 995 hPa (29.38 inHg) | ||||
| BOB 04 | October 19 – 20, 2011 | Deep Depression | 55 km/h (35 mph) | 1000 hPa (29.53 inHg) | ||||
| ARB 03 | November 6 – 10, 2011 | Deep Depression | 55 km/h (35 mph) | 1000 hPa (29.53 inHg) | ||||
| ARB 04 | November 26 – December 1, 2011 | Deep Depression | 55 km/h (35 mph) | 998 hPa (29.47 inHg) | ||||
| BOB 01 | October 10 – 11, 2012 | Deep Depression | 55 km/h (35 mph) | 1002 hPa (29.59 inHg) | ||||
| BOB 03 | November 17 – 19, 2012 | Deep Depression | 55 km/h (35 mph) | 1002 hPa (29.59 inHg) | ||||
| ARB 02 | December 22 – 24, 2012 | Deep Depression | 55 km/h (35 mph) | 1002 hPa (29.59 inHg) | ||||
| BOB 02 | May 29 – 31, 2013 | Depression | 45 km/h (30 mph) | 990 hPa (29.23 inHg) | ||||
| BOB 03 | July 30 – August 1, 2013 | Depression | 45 km/h (30 mph) | 990 hPa (29.23 inHg) | ||||
| Land | August 20 – 23, 2013 | Depression | 45 km/h (30 mph) | 990 hPa (29.23 inHg) | ||||
| ARB 01 | November 8 – 11, 2013 | Deep Depression | 55 km/h (35 mph) | 1002 hPa (29.59 inHg) | ||||
| Wilma | November 13 – 17, 2013 | Depression | 45 km/h (30 mph) | 1003 hPa (29.62 inHg) | ||||
| BOB 01 | January 4 – 7, 2014 | Depression | 45 km/h (30 mph) | 1004 hPa (29.65 inHg) | Sri Lanka | Minor | None | |
| BOB 02 | May 21 – 23, 2014 | Depression | 45 km/h (30 mph) | 1000 hPa (29.53 inHg) | Andaman and Nicobar Islands, India | |||
| Land | July 21 – 22, 2014 | Depression | 45 km/h (30 mph) | 988 hPa (29.18 inHg) | ||||
| Land | August 4 – 8, 2014 | Deep depression | 55 km/h (35 mph) | 988 hPa (29.18 inHg) | ||||
| BOB 04 | November 5 – 8, 2014 | Deep Depression | 55 km/h (35 mph) | 1000 hPa (29.53 inHg) | ||||
| BOB 01 | June 20 – 21, 2015 | Depression | 45 km/h (30 mph) | 994 hPa (29.35 inHg) | East India | |||
| ARB 02 | June 22 – 24, 2015 | Deep Depression | 55 km/h (35 mph) | 988 hPa (29.18 inHg) | West India | |||
| Land | July 10 – 12, 2015 | Depression | 45 km/h (30 mph) | 994 hPa (29.35 inHg) | North India, Nepal | None | None | |
| Land | July 27 – 30, 2015 | Deep Depression | 55 km/h (35 mph) | 994 hPa (29.35 inHg) | Central India | None | None | |
| Land | August 4, 2015 | Depression | 45 km/h (30 mph) | 998 hPa (29.47 inHg) | Central India | None | None | |
| Land | September 16 – 19, 2015 | Deep Depression | 55 km/h (35 mph) | 996 hPa (29.41 inHg) | Central India | None | None | |
| ARB 03 | October 9 – 12, 2015 | Deep Depression | 55 km/h (35 mph) | 1000 hPa (29.53 inHg) | None | None | None | |
| BOB 03 | November 8 – 10, 2015 | Deep Depression | 55 km/h (35 mph) | 991 hPa (29.26 inHg) | South India, Sri Lanka | Unknown | 71 | |
| ARB 01 | June 27 – 29, 2016 | Depression | 45 km/h (30 mph) | 996 hPa (29.41 inHg) | Oman, Gujarat | None | None | |
| Land | July 6 – 7, 2016 | Depression | 45 km/h (30 mph) | 996 hPa (29.41 inHg) | East India | Unknown | None | |
| Land | August 9 – 12, 2016 | Deep Depression | 55 km/h (35 mph) | 994 hPa (29.35 inHg) | East India, Bangladesh | Minimal | 20 | |
| BOB 02 | August 16 – 20, 2016 | Depression | 45 km/h (30 mph) | 994 hPa (29.35 inHg) | East India, Bangladesh | Unknown | 17 | |
| BOB 04 | November 2 – 6, 2016 | Depression | 45 km/h (30 mph) | 1000 hPa (29.53 inHg) | Malaysia, Thailand, West Bengal, Bangladesh | Unknown | 80 | |
| ARB 02 | December 17 – 18, 2016 | Depression | 45 km/h (30 mph) | 994 hPa (29.35 inHg) | Somalia | Unknown | None | |
| BOB 03 | June 11 – 13, 2017 | Deep Depression | 55 km/h (35 mph) | 988 hPa (29.18 inHg) | Northeast India, Bangladesh | |||
| BOB 04 | July 18 – 19, 2017 | Depression | 45 km/h (30 mph) | 992 hPa (29.29 inHg) | Orissa, Madhya Pradesh, Chhattisgarh | |||
| Land | July 26 – 27, 2017 | Depression | 45 km/h (30 mph) | 992 hPa (29.29 inHg) | West Bengal, Jharkhand, Madhya Pradesh | |||
| Land | October 8 – 10, 2017 | Deep Depression | 55 km/h (35 mph) | 996 hPa (29.41 inHg) | Bangladesh, West Bengal, Jharkhand, Odisha, Andhra Pradesh | Unknown | 7 | |
| BOB 05 | October 18 – 22, 2017 | Depression | 45 km/h (30 mph) | 999 hPa (29.50 inHg) | Odisha, West Bengal, Northeastern India, Bangladesh | Unknown | 1 | |
| BOB 06 | November 15 – 17, 2017 | Depression | 45 km/h (30 mph) | 1000 hPa (29.53 inHg) | Odisha, West Bengal, Andhra Pradesh | Unknown | 20 | |
| BOB 08 | December 5 – 9, 2017 | Deep Depression | 55 km/h (35 mph) | 1002 hPa (29.59 inHg) | ||||
| ARB 01 | March 13 – 14, 2018 | Depression | 45 km/h (30 mph) | 1006 hPa (29.71 inHg) | South India, Maldives | None | None | |
| BOB 01 | May 29 – 30, 2018 | Deep Depression | 55 km/h (35 mph) | 992 hPa (29.29 inHg) | Myanmar | None | 5 | |
| BOB 02 | June 10 – 10, 2018 | Depression | 45 km/h (30 mph) | 988 hPa (29.18 inHg) | Bangladesh | None | None | |
| BOB 03 | July 21 – 23, 2018 | Deep Depression | 55 km/h (35 mph) | 988 hPa (29.18 inHg) | East India, North India | Unknown | 69 | |
| BOB 04 | August 7 – 8, 2018 | Depression | 45 km/h (30 mph) | 992 hPa (29.29 inHg) | East India | None | None | |
| BOB 05 | August 15 – 17, 2018 | Depression | 45 km/h (30 mph) | 993 hPa (29.32 inHg) | East India, Central India, West India | Unknown | None | |
| BOB 06 | September 6 – 7, 2018 | Deep Depression | 55 km/h (35 mph) | 990 hPa (29.23 inHg) | East India | Unknown | None | |
| BOB 03 | August 6 – 9, 2019 | Deep Depression | 55 km/h (35 mph) | 988 hPa (29.18 inHg) | East India, Bangladesh | Unknown | 3 | |
| Land | September 30 – October 1, 2019 | Depression | 45 km/h (30 mph) | 1004 hPa (29.65 inHg) | ||||
| ARB 06 | December 3 – 5, 2019 | Deep Depression | 55 km/h (35 mph) | 1002 hPa (29.59 inHg) | Tamil Nadu | Unknown | 25 | |
| ARB 08 | December 8 – 10, 2019 | Deep Depression | 55 km/h (35 mph) | 1004 hPa (29.65 inHg) | Socotra, Somalia | Unknown | None | |
| ARB 01 | May 29 – 31, 2020 | Depression | 45 km/h (30 mph) | 1000 hPa (29.53 inHg) | Oman, Yemen | Unknown | 3 | [25] |
| BOB 02 | October 11 – 14, 2020 | Deep depression | 55 km/h (35 mph) | 999 hPa (29.50 inHg) | India | $681 million | 98 | [26] |
| ARB 03 | October 17 – 19, 2020 | Depression | 45 km/h (30 mph) | 1000 hPa (29.53 inHg) | Maharashtra | Minimal | None | |
| BOB 03 | October 22 – 24 | Depression | 45 km/h (30 mph) | 1000 hPa (29.53 inHg) | West Bengal, Bangladesh, Northeast India | Minimal | None | |
Over the years, other systems have been classified as a tropical depression, by other warning centres such as the United States Joint Typhoon Warning Center, Thai or Bangladesh Meteorological Departments. However, these systems have not been formally recognised as a cyclonic disturbance by the IMD.
Durian 2006
| Month of formation | Depressions | Deep Depressions | Total |
|---|---|---|---|
| January | 2 | 2 | 4 |
| February | 1 | 0 | 1 |
| March | 2 | 0 | 2 |
| April | 0 | 0 | 0 |
| May | 7 | 9 | 16 |
| June | 22 | 27 | 49 |
| July | 21 | 25 | 46 |
| August | 41 | 28 | 69 |
| September | 32 | 15 | 47 |
| October | 22 | 25 | 47 |
| November | 13 | 18 | 31 |
| December | 10 | 9 | 19 |
| Total | 173 | 158 | 331 |
| Decade | Depressions | Deep Depressions | Total |
|---|---|---|---|
| Pre 1960s | 2 | 2 | 4 |
| 1960 | 1 | 0 | 1 |
| 1970 | 35 | 48 | 83 |
| 1980 | 47 | 26 | 73 |
| 1990 | 19 | 28 | 47 |
| 2000 | 27 | 22 | 49 |
| 2010 | 30 | 26 | 56 |
| 2020 | 1 | 0 | 1 |
| Total | 173 | 158 | 331 |
In the Indian Ocean north of the equator, tropical cyclones can form throughout the year on either side of India, although most frequently between April and June, and between October and December.
The 1992 North Indian Ocean cyclone season was unofficially the most active year on record for the basin, with 10 tropical storms developing, according to the Joint Typhoon Warning Center (JTWC). There are two main seas in the North Indian Ocean – the Bay of Bengal to the east of the Indian subcontinent – and the Arabian Sea to the west of India. The official Regional Specialized Meteorological Centre in this basin is the India Meteorological Department (IMD), while the JTWC releases unofficial advisories. An average of four to six storms form in the North Indian Ocean every season with peaks in May and November. Cyclones occurring between the meridians 45°E and 100°E are included in the season by the IMD.
The 1978 North Indian Ocean cyclone season had no bounds, but tropical cyclones in the North Indian Ocean tend to form between April and December, with peaks in May and November. The 1978 season produced five cyclonic storms of which developed into three severe cyclonic storms. All Five of the storms formed in the Bay of Bengal and four of those made landfall. The most notable storm of the season was Cyclone Four which hit Sri Lanka.
The 2001 North Indian Ocean cyclone season was fairly quiet, although activity was evenly spread between the Arabian Sea and the Bay of Bengal. There were six depressions tracked by the India Meteorological Department (IMD), which is the official Regional Specialized Meteorological Center for the northern Indian Ocean. The agency also tracked four cyclonic storms, which have maximum winds of at least 65 km/h (40 mph) sustained over 3 minutes. The American-based Joint Typhoon Warning Center (JTWC) tracked an additional storm – Tropical Storm Vamei – which crossed over from the South China Sea at a record-low latitude.
The 1991 North Indian Ocean Cyclone season was an extremely deadly and destructive season causing the deaths of more than 138,000 people and over $1.5 billion in damages. It was the period in which tropical cyclones formed to the north of the equator in the Indian Ocean. During the season tropical cyclones were monitored by the India Meteorological Department (IMD) and the Joint Typhoon Warning Center. The IMD assigned all depressions that it monitored with BOB followed by a number in numerical order. The JTWC also assigned a number and either the letter A or B depending on where the depression was when the first advisory was issued.
The 1980 North Indian Ocean cyclone season was part of the annual cycle of tropical cyclone formation. The season has no official bounds but cyclones tend to form between April and December. These dates conventionally delimit the period of each year when most tropical cyclones form in the northern Indian Ocean. There are two main seas in the North Indian Ocean—the Bay of Bengal to the east of the Indian subcontinent and the Arabian Sea to the west of India. The official Regional Specialized Meteorological Centre in this basin is the India Meteorological Department (IMD), while the Joint Typhoon Warning Center (JTWC) releases unofficial advisories. An average of five tropical cyclones form in the North Indian Ocean every season with peaks in May and November. Cyclones occurring between the meridians 45°E and 100°E are included in the season by the IMD.
The 2013 North Indian Ocean cyclone season was an event in the annual cycle of tropical cyclone formation, in which tropical cyclones formed in the North Indian Ocean and Arabian Sea. The season had no official bounds, but cyclones typically formed between May and December, with the peak from October to November. These dates conventionally delimit the period of each year when most tropical cyclones form in the northern Indian Ocean.
The 1961 North Indian Ocean cyclone season had no bounds, but cyclones tend to form between April and December, with peaks in May and November. These dates conventionally delimit the period of each year when most tropical cyclones form in the northern Indian Ocean. There are two main seas in the North Indian Ocean—the Bay of Bengal to the east of the Indian subcontinent and the Arabian Sea to the west of India. The official Regional Specialized Meteorological Centre in this basin is the India Meteorological Department (IMD), while the Joint Typhoon Warning Center releases unofficial advisories. An average of four to six storms form in the North Indian Ocean every season with peaks in May and November. Cyclones occurring between the meridians 45°E and 100°E are included in the season by the IMD.
The 1963 North Indian Ocean cyclone season had no bounds, but cyclones tend to form between April and December, with peaks in May and November. The season has no official bounds but cyclones tend to form between April and December. These dates conventionally delimit the period of each year when most tropical cyclones form in the northern Indian Ocean. There are two main seas in the North Indian Ocean—the Bay of Bengal to the east of the Indian subcontinent and the Arabian Sea to the west of India. The official Regional Specialized Meteorological Centre in this basin is the India Meteorological Department (IMD), while the Joint Typhoon Warning Center releases unofficial advisories. An average of four to six storms form in the North Indian Ocean every season with peaks in May and November. Cyclones occurring between the meridians 45°E and 100°E are included in the season by the IMD.
The 2014 North Indian Ocean cyclone season was an event in the annual cycle of tropical cyclone formation. The season included two very severe cyclonic storms, both in October, and one other named cyclonic storm, classified according to the tropical cyclone intensity scale of the India Meteorological Department. Cyclone Hudhud is estimated to have caused US$3.58 billion in damage across eastern India, and more than 120 deaths.
The 2018 North Indian Ocean cyclone season was one of the most active North Indian Ocean cyclone seasons since 1992, with the formation of fourteen depressions and seven cyclones. The North Indian Ocean cyclone season has no official bounds, but cyclones tend to form between April and December, with the two peaks in May and November. These dates conventionally delimit the period of each year when most tropical cyclones form in the northern Indian Ocean.
The 2019 North Indian Ocean cyclone season was the most active North Indian Ocean cyclone season on record, in terms of cyclonic storms, however the 1992 season was more active according to the Joint Typhoon Warning Center. The season featured 12 depressions, 11 deep depressions, 8 cyclonic storms, 6 severe cyclonic storms, 6 very severe cyclonic storms, 3 extremely severe cyclonic storms, and 1 super cyclonic storm, Kyarr, the first since Cyclone Gonu in 2007. Additionally, it was also the third-costliest season recorded in the North Indian Ocean, only behind the 2020 and 2008 seasons.
The 2020 North Indian Ocean cyclone season was the costliest North Indian Ocean cyclone season on record, mostly due to the devastating Cyclone Amphan. The North Indian Ocean cyclone season has no official bounds, but cyclones tend to form between April and November, with peaks in late April to May and October to November. These dates conventionally delimit the period of each year when most tropical cyclones form in the northern Indian Ocean. The season began on May 16 with the designation of Depression BOB 01 in the Bay of Bengal, which later became Amphan. Cyclone Amphan was the strongest storm in the Bay of Bengal in 21 years and would break Nargis of 2008's record as the costliest storm in the North Indian Ocean. The season concluded with the dissipation of Cyclone Burevi on December 5. Overall, the season was slightly above average, seeing the development of five cyclonic storms.
Severe Cyclonic Storm Asani was a strong tropical cyclone that made landfall in India in May 2022. The third depression and deep depression, and the first named storm of the 2022 North Indian Ocean cyclone season, Asani originated from a depression that the Indian Meteorological Department first monitored on May 7. Conditions rapidly favored development as the system became a deep depression by that day before intensifying to a Cyclonic Storm Asani. On the next day it further intensified and peak to a severe cyclonic storm, before making landfall as a deep depression system over Andhra Pradesh. It degenerated into a well marked low-pressure on May 12.
