Meteorological history | |
---|---|
Formed | 24 February 1988 |
Extratropical | 4 March 1988 |
Dissipated | 12 March 1988 |
Category 4 severe tropical cyclone | |
10-minute sustained (FMS) | |
Highest winds | 165 km/h (105 mph) |
Lowest pressure | 940 hPa (mbar);27.76 inHg |
Category 3-equivalent tropical cyclone | |
1-minute sustained (SSHWS/JTWC) | |
Highest winds | 195 km/h (120 mph) |
Overall effects | |
Fatalities | 7 direct |
Damage | $82 million (1988 USD) |
Areas affected | Fiji,Vanuatu,New Zealand |
IBTrACS | |
Part of the 1987–88 South Pacific cyclone season |
Severe Tropical Cyclone Bola was one of the costliest cyclones in the history of New Zealand, [1] causing severe damage as an extratropical cyclone when it passed near the country in March 1988. It formed on 24 February to the north of Fiji,and tracking generally southwestward it reached hurricane-force winds near Vanuatu on 28 February. The next day it generated peak wind velocities of 195 km/h (120 mph),though it quickly weakened as it accelerated southward. On 4 March,Bola transitioned into an extratropical storm,passing to the north of the North Island of New Zealand on 8 March. It weakened further and was absorbed by a stationary trough near the South Island on 12 March.
The cyclone first affected Fiji,where it produced gale-force winds and strong waves. In Vanuatu,Bola dropped heavy rainfall,which destroyed two bridges and caused severe damage to islands in the group. Bola caused severe damage to the North Island of New Zealand,where heavy rainfall peaked at 917 mm (36.1 in) in the Gisborne Region. Damage totaled over $82 million (1988 USD). [2] Seven people were killed due to flooding, [3] and hundreds were evacuated when a swollen river threatened Wairoa. In Whangaruru Harbour,Northland,an elderly male suffered a heart attack and died during the peak of the storm while attempting to tie down a neighbour's empty water tank.
The system that was to become Severe Tropical Cyclone Bola was first noted during 24 February, as a depression that had developed within the South Pacific Convergence Zone about 850 km (530 mi) to the north-east of Nadi, Fiji. [4] [5] During that day the system moved south-westwards and passed about 260 km (160 mi) to the north of Nadi, Fiji, before it started to move north-westwards during 25 February. [5] The system was subsequently named Bola by the Fiji Meteorological Service during the next day, after it had become a Category 1 tropical cyclone on the Australian tropical cyclone intensity scale. [4] The system subsequently moved south-westwards which meant that the islands of Maewo and Pentecost were threatened. [6] However, as Bola moved further southwards it entered a region of light and variable wind on 27 February, which along with an area of high pressure in the Tasman Sea blocked Bola's movement southwards. [6] By this time Bola had become a category 2 tropical cyclone on the Australian scale, with wind speeds of between 95–110 km/h (60–70 mph) occurring near the centre. [5] By 28 February, the system became a Category 3 severe tropical cyclone on the Australian scale, as it performed a small clockwise loop, between the Shepherd Islands and Efate. [5] [6] After completing its first cyclonic loop on 29 February, Bola started to move south-eastwards, before it performed a second cyclonic loop during the next day. [5] [6]
As it completed its second cyclonic loop on 2 March, the FMS reported that the system had peaked with 10-minute sustained wind speeds of 165 km/h (105 mph), which made it a Category 4 severe tropical cyclone on the Australian scale. [5] [6] The United States Joint Typhoon Warning Center also reported that the system had peaked with 1-minute sustained wind speeds of 195 km/h (120 mph), which made it equivalent to a category 3 hurricane on the Saffir-Simpson hurricane wind scale. [7]
After reaching peak intensity, Cyclone Bola quickly weakened as it accelerated southeastward toward a frontal trough. [8] [9] On 3 March, its winds dropped below hurricane-force, [8] and it gradually lost its tropical characteristics. The structure became asymmetric, with a large band of clouds extending well south of the circulation. [9] By 4 March, Bola had completed the transition into an extratropical cyclone. [8] It then turned south and began to affect the North Island of New Zealand on 6 March. A building ridge of high pressure to its south caused the extratropical remnants of Bola to slow and turn to the west on 7 March. The next day, the storm passed about 110 km (68 mi) north of the North Island. Around the same time, the storm began slowly filling, meaning the low pressure area associated with Bola was losing its identity. It turned southward on 9 March, and on 12 March was absorbed by a stationary trough in the Westerlies near the western coast of the South Island. [9] [10]
Cyclone Bola remained near Vanuatu for about a week, [11] during which it reached its peak intensity while executing a cyclonic loop. [8] The most affected locations were Epi island, the Shepherd Islands, and the islands in Malampa Province, and throughout the country the cyclone affected more than 15,000 people and 3,000 houses. [11] In a five-day period the cyclone dropped about 450 mm (18 in) of rainfall. Two bridges on Malakula were destroyed, and several other bridges were flooded or damaged. The passage of the cyclone also left several buildings, roads, and crop fields damaged. [12]
Fiji was first affected by Bola on 25 February, while the system was within its developing stages. [13] The system subsequently affected the island nation for a second time between 3 and 4 March. [13] [14] As it impacted the island nation for a second time, gale-force winds of up to 81 km/h (50 mph) and waves of up to 5 m (16 ft) were observed. [13] [14] Only very minor damage to sugarcane, pawpaws and other crops was reported, while the Fijian Government decided not to assess the damage caused by Bola. [14] [15] An open punt went missing between Kadavu and Vateule on 3 March, with six fishermen on board. [14] All six fishermen were subsequently presumed dead after repeated air searches had failed to find them. [14]
Cyclone Bola created some of the largest rainfall totals for a single storm in the history of New Zealand, with some locations receiving more than half of their annual rainfall totals from the storm. While the cyclone passed north of the island, a strong easterly flow over the North Island contained the interaction between moist air from Bola and drier air from the ridge to its southeast. In the Gisborne region, the flow resulted in the heaviest rainfall totals, when the moisture ascended over the region's western mountainous areas and condensed into precipitation. One station recorded 419 mm (16.5 in) in a 24‑hour period. [9] The maximum rainfall total attributed to the storm was 917 mm (36.1 in), reported at a station near Tolaga Bay. [1] Heavy rainfall totals of up to and over 300 mm (12 in) were observed in the regions of Auckland and Northland. [9] The cyclone is the largest to be recorded in 93 years of rainfall records. As such, it had a large and lasting effect on the rivers of the area when it deposited a large amount of sediment, as recorded in the sedimentary record of Lake Tūtira. [16] Shortly prior to losing its identity, the remnants of Bola also dropped 100–200 mm (3.9–7.9 in) of precipitation on the South Island of New Zealand. [9]
Storm damage was heaviest in Gisborne, where rain destroyed or damaged several roads and bridges. [9] Three days of continuous rainfall led to mudslides, flooding, [1] and erosion. [2] Seven people drowned in the flooding. [3] In Te Karaka in Gisborne, a flooded river forced 500 residents to evacuate. A total of 1,765 farmers were affected by the flooding, accounting for about 3,600 hectares (8,900 acres) of damaged crop fields and about $90 million in crop damage (1988 NZD$, 82 million 1988 USD). Water supplies were disrupted in two cities due to flooding. Rainfall in Northland Region caused flooding and outages to telephone and power. [1] Additionally, beginning on about 6 March, the cyclone began affecting the North Island with strong easterly winds of over hurricane force, caused by the interaction between the extratropical remnants of Bola and a ridge of high pressure to its south. The winds damaged a few homes, including some in which the roofs were damaged or destroyed. [1] [9] In addition, the strong winds downed several trees, and at the same time, erosion and landslides left hillsides bare without grass or trees. [2] [9]
Crop and stock losses were high and among the thousands of people who fled three people died when their car was washed away by floodwaters. [17] The government responded with Michael Bassett, the Minister of Civil Defence, flying to Gisborne on 8 March in an air force plane (the airport was closed to normal passenger flights). There he met with Colin Moyle, the Minister of Agriculture, to organise restoring water and food supplies to the area. On 11 March, Prime Minister David Lange flew in an air force helicopter to areas north of Gisborne to accompany a mission to drop supplies to stranded people. At the final destination Lange famously was met by a farmers wife wearing a pink nightgown and gumboots who burst into tears of relief when presented with an aid package by Lange. [18] After regular warm summer weather resumed, with fresh running water connection still not fully reestablished, a health scare developed. Lange insisted on having a member of his personal staff in Gisborne, which inadvertently cut across lines of command established by Ed Latter, the Director of Civil Defence, causing confusion. After the dissipation of the cyclone a rebuilding effort was begun in Gisborne which benefitted the town. [19] Agriculture losses amounted to $90 million and the government's repair bill was more than $111 million. [17]
Due to the effects of Cyclone Bola, many farms in Taranaki converted from horticulture to dairy farming. [20]
The Royal New Zealand Navy Frigate HMNZS Waikato sailed from Newcastle Australia to Auckland NZ when all merchant shipping had been stopped and encountered Cyclone Bola in the Tasman Sea. Waikato was a day late reaching Auckland and suffered some heavy damage, with crew members still often talking about the passage back to New Zealand, likening it to being tossed about like a cork in the heavy seas.[ citation needed ]
In Vanuatu, cyclone victims received food and emergency aid following the storm. [11] Australian patrol boat HMAS Cessnock provided manpower assistance to 11 islands in the country. [21] Reconstruction costs in Vanuatu totalled about $5 million (1988 USD), which was about 10 percent of the country's national budget. [11]
After the passage of the storm, four towns in New Zealand declared states of emergency. [1] The New Zealand government provided about $80 million (1988 NZD) to the east coast region of the North Island for assisting in cyclone damage. $8 million was used to create an East Coast Forestry Conservation Scheme, which was set to protect forests and prevent erosion. [2] A study was taken five years after the storm, consisting of a group of 112 people who were evacuated or received monetary assistance in response to the cyclone; the study showed 12% of the respondents as experiencing Posttraumatic stress disorder, of which they reported a general lack of assistance and public support. [22]
The name Bola was later retired, meaning it will not be used again within the same basin. [23]
{{cite journal}}
: CS1 maint: multiple names: authors list (link)The 2003–04 South Pacific cyclone season was a below-average season with only three tropical cyclones occurring within the South Pacific to the east of 160°E. The season officially ran from November 1, 2003 to April 30, 2004 with the first disturbance of the season forming on December 4 and the last disturbance dissipating on April 23. This is the period of the year when most tropical cyclones form within the South Pacific Ocean.
The 2002–03 South Pacific cyclone season was the most active and longest tropical cyclone season since 1997–98, with ten tropical cyclones occurring within the South Pacific basin between 160°E and 120°W. The season started earlier than normal, with two systems developing before the official start of the season on November 1, 2002, while the final system dissipated on June 9, 2003, after the season had officially ended on April 30. During the season, tropical cyclones were officially monitored by the Regional Specialized Meteorological Centre (RSMC) in Nadi, Fiji and the Tropical Cyclone Warning Centres in Brisbane, Australia and Wellington, New Zealand. The United States Armed Forces through the Joint Typhoon Warning Center (JTWC), also monitored the basin and issued unofficial warnings for American interests. RSMC Nadi attaches a number and an F suffix to tropical disturbances that occur within the basin, while the JTWC designates significant tropical cyclones with a number and a P suffix. RSMC Nadi, TCWC Wellington and TCWC Brisbane all use the Australian Tropical Cyclone Intensity Scale and estimate windspeeds over a ten-minute period, while the JTWC estimates sustained winds over a one-minute period, which are subsequently compared to the Saffir–Simpson Hurricane Scale (SSHS).
Severe Tropical Cyclone Ivy was a tropical cyclone that affected about 25% of the population of Vanuatu in February 2004. It was first classified as a tropical disturbance on February 21 between Vanuatu and Fiji. The system tracked northwestward, gradually organizing and intensifying. After attaining tropical storm status on February 23, Ivy strengthened more quickly as it turned southwestward toward Vanuatu. It attained peak winds of 165 km/h (103 mph) while moving over Vanuatu, making it an intense Category 4 cyclone on the Australian Region Tropical Cyclone Intensity Scale. By the time it passed through Vanuatu, Ivy had turned southeastward, and it gradually weakened while accelerating. After becoming extratropical on February 28, it passed just east of New Zealand and eventually dissipated on March 2.
The 1992–93 South Pacific cyclone season was an above-average tropical cyclone season with ten tropical cyclones occurring within the South Pacific to the east of 160°E. The season officially ran from November 1, 1992, to April 30, 1993, with the first disturbance of the season forming on December 3 and the last disturbance dissipating on April 6.
The 1987–88 South Pacific cyclone season was a quiet tropical cyclone season with five tropical cyclones and 2 severe tropical cyclones, observed within the South Pacific basin to the east of 160°E.
The 1988–89 South Pacific cyclone season was an active tropical cyclone season with an above average number of tropical cyclones observed.
The 1978–79 South Pacific cyclone season ran year-round from July 1 to June 30. Tropical cyclone activity in the Southern Hemisphere reaches its peak from mid-February to early March.
The 2011–12 South Pacific cyclone season was one of the least active South Pacific tropical cyclone seasons on record, with only three tropical cyclones occurring during the season. The season ran from November 1, 2011, to April 30, 2012, however, any tropical cyclones that form before June 30, 2012, would have fallen within the 2011–12 tropical cyclone year and would have counted towards the season total. The strongest and only severe tropical cyclone that occurred during the season was Severe Tropical Cyclone Jasmine, which tracked in from out of the South Pacific basin. Within the basin, tropical cyclones are monitored by the Regional Specialized Meteorological Center (RSMC) in Nadi, Fiji, and the Tropical Cyclone Warning Center (TCWC) in Wellington, New Zealand. RSMC Nadi attaches an F designation to tropical disturbances that form in or move into the South Pacific. The United States Joint Typhoon Warning Center (JTWC) issues unofficial warnings within the South Pacific, designating tropical storm-equivalent or greater tropical cyclones with a number and a P suffix. RSMC Nadi and TCWC Wellington both use the Australian Tropical Cyclone Intensity Scale, and measure windspeeds over a period of ten minutes, while the JTWC measures sustained winds over a period of one minute and uses the Saffir–Simpson hurricane scale.
Severe Tropical Cyclone Rewa affected six countries and caused 22 deaths on its 28-day journey across the South Pacific Ocean in December 1993 and January 1994. Cyclone Rewa developed from a tropical disturbance on 28 December south of Nauru. After forming, Rewa moved southwest through the Solomon Islands, crossing the 160th meridian east from the South Pacific basin into the Australian region. The cyclone began to strengthen steadily and turned southward, paralleling the eastern Australian coast through 31 December. Rewa reached its initial peak intensity as a Category 4 tropical cyclone on 2 January. It maintained this intensity for about 12 hours before an increase in wind shear induced its weakening by 3 January. The cyclone turned southeastward and moved back into the South Pacific basin on 4 January, before it passed over New Caledonia between 5–6 January. After affecting New Caledonia, Rewa weakened to a tropical depression and turned northwestward before re-entering the Australian basin on 10 January.
The 1995–96 South Pacific cyclone season was a below average South Pacific tropical cyclone season's on record, with only five tropical cyclones occurring within the South Pacific Ocean to the east of 160°E. The season officially ran from November 1, 1995, until April 30, 1996. The first storm developed on January 12, while the last one dissipated on April 2. During the season the most intense tropical cyclone was Severe Tropical Cyclone Beti, which reached a minimum pressure of 935 hPa (27.61 inHg) as it affected New Caledonia. After the season ended Beti's name was the only name to be retired from the tropical cyclone naming lists and was replaced with Bune, after it inflicted over 5.6 million (USD) worth of damage to Australia, Vanuatu, New Caledonia and New Zealand.
Severe Tropical Cyclone Jasmine was a powerful and long-lived annular tropical cyclone that affected several countries, particularly Vanuatu and Tonga, over a 16-day span in February 2012. The system was the second cyclone and the only severe tropical cyclone of the relatively quiet 2011–12 South Pacific cyclone season. Cyclone Jasmine developed from an area of disturbed weather on 1 February in the Gulf of Carpentaria. Initially, the storm moved towards the east and across the Cape York Peninsula. As it moved across the South Pacific, earlier existing wind shear conditions lessened, and Jasmine began to strengthen at a faster rate. Steadily intensifying, Jasmine reached peak intensity on 8 February as a Category 4 equivalent on the Saffir–Simpson Hurricane Scale, while beginning to show annular characteristics.
Severe Tropical Cyclone Pam was the second most intense tropical cyclone of the South Pacific Ocean in terms of sustained winds and is regarded as one of the worst natural disasters in the history of Vanuatu. A total of 15–16 people died either directly or indirectly as a result of Pam with many others injured. The storm's impacts were also felt, albeit to a lesser extent, on other islands in the South Pacific, most notably the Solomon Islands, Tuvalu, and New Zealand. Pam is the third most intense storm of the South Pacific Ocean according to pressure, after Winston of 2016 and Zoe of 2002. It is also the second most intense tropical cyclone in 2015, only behind Hurricane Patricia. In addition, Pam is tied with Orson, Monica, Marcus and Fantala for having the second strongest ten-minute maximum sustained winds in the Southern Hemisphere. Thousands of homes, schools and buildings were damaged or destroyed, with an estimated 3,300 people displaced as a result.
Severe Tropical Cyclone Fran was the third tropical cyclone within four weeks to impact Vanuatu in 1992. Fran formed on 4 March and then gradually intensified, with winds reaching gale-force on 5 March, and hurricane-force a few days later. Few days later, Cyclone Fran reached severe tropical cyclone status near Vanuatu, and also became a powerful Category 5-equivalent on the Saffir–Simpson Hurricane Scale. The storm weakened somewhat due to land interaction, but briefly re-intensified after moving away from land. Fran gradually weakened over the next several days over less favorable conditions. Meanwhile, the storm passed north of New Caledonia. Eventually, as a Category 2 system on the Australian scale, Fran made landfall on Queensland on 16 March. Afterwards, Cyclone Fran turned towards the southeast and eventually headed back out to sea, eventually dissipating the next day. On Efate, over 130 houses lost roofs. Along Queensland, two rivers sustained major flooding, but no deaths were attributed to this cyclone. Total damage from the system was AU$8–10 million. Moderate damage was also reported in Fiji. In New Caledonia, the storm brought flooding and landslides.
Severe Tropical Cyclone Drena was a powerful tropical cyclone that caused significant damage throughout New Zealand. A tropical depression formed on January 2, 1997. After crossing Vanuatu and emerging into the Coral Sea, the storm began to intensify, and by January 6, had attained peak intensity. After attaining peak intensity, Drena began to weaken. Cyclone Drena later brushed New Caledonia, bringing some damage. After transitioning into an extratropical cyclone on January 9, Drena brought impact to New Zealand. Damage totaled to $6.7 million and 3 people were killed. Roughly 140 people were evacuated after 44 homes were flooded. After the season, Drena was retired.
Severe Tropical Cyclone Yali was one of seven severe tropical cyclones to develop during the 1997–98 South Pacific cyclone season. The system that was to become Yali was first noted as a tropical disturbance, to the northeast of Vanuatu during March 17. Over the next couple of days, the system moved towards the south-west and gradually developed further, before it was named Yali during March 19, after it had developed into a tropical cyclone. After it was named Yali re-curved and started moving towards the south-southeast, as the monsoonal flow to the north of the system strengthened. While the system was active, Yali affected Vanuatu and New Caledonia before the extra-tropical remnants impacted New Zealand where a man was killed and widespread power outages and damage were reported.
Severe Tropical Cyclone Paula was a tropical cyclone which caused extensive damage to areas of Vanuatu. The cyclone was the second cyclone and only severe tropical cyclone of the relatively inactive 2000–01 South Pacific cyclone season. Cyclone Paula developed from an area of disturbed weather embedded within a monsoon trough on February 25, 2001, near Vanuatu. Situated in an area of favorable conditions, Paula steadily intensified as it moved in a general direction towards the southeast. On March 1, Paula reached peak intensity with winds of 175 km/h (109 mph), sustained for ten minutes. However, the cyclone began to accelerate further to the southeast into more unfavorable conditions. As a result, Paula quickly weakened, and thus degenerated into an extratropical cyclone on March 4.
Severe Tropical Cyclone Anne was one of the most intense tropical cyclones within the South Pacific basin during the 1980s. The cyclone was first noted on January 5, 1988 as a weak tropical depression to the northeast of Tuvalu, in conjunction with the future Typhoon Roy in the Northern Hemisphere. Over the next few days, the system gradually developed while moving southwestward. Once it became a tropical cyclone, it was named Anne on January 8. The next day, Anne rapidly intensified, becoming the fourth major tropical cyclone to affect Vanuatu within four years. On January 11, Anne peaked in intensity while it was equivalent to a Category 5 on the Saffir–Simpson hurricane wind scale, and a Category 4 on the Australian tropical cyclone intensity scale. After turning southward on January 12, Anne struck New Caledonia, becoming the strongest tropical cyclone to affect the French Overseas Territory. The system subsequently weakened as it started to interact with Tropical Cyclone Agi. Anne weakened into a depression and was last noted on January 14 to the south-east of New Caledonia.
Severe Tropical Cyclone Esau was the strongest tropical cyclone to affect New Caledonia on record. A shallow tropical depression developed within the monsoon trough during 24 February 1992, about 370 km (230 mi) to the northeast of Port Vila, Vanuatu. Over the next day, the system gradually developed further as it moved towards the south-west under the influence of a northerly steering flow, before it passed over Pentecost Island in northern Vanuatu during 25 February. After passing over Pentecost the system continued to move towards the southwest and passed near the island of Malampa before the depression turned northwards and executed a small clockwise loop as it passed over the island of Espiritu Santo. The system was subsequently named Esau during 26 February, after it had developed into a tropical cyclone. Over the next couple of days, the system moved south-westwards towards Australia and away from the islands of Vanuatu. Esau subsequently executed a second clockwise loop during 28 February, before it peaked as a Category 4 tropical cyclone on both the Australian tropical cyclone intensity scale and the Saffir-Simpson hurricane wind scale. After it had peaked the system moved south-eastwards and threatened Southern Vanuatu, before turning southwards and threatening the French overseas territory of New Caledonia. Esau made landfall on the French territory during 4 March, as a category 3 severe tropical cyclone before degenerating into an extratropical cyclone during 5 March. The systems remnants made landfall on New Zealand's North Island during 8 March, before they were last noted during the next day over the South Pacific Ocean.
Severe Tropical Cyclone Ula was a powerful and long-lived tropical cyclone during late December 2015 and mid-January 2016. It originated from a tropical disturbance on December 26, 2015, east of the Solomon Islands. Moving generally east, development was initially slow and the system finally reached cyclone strength—having gale-force winds—on December 30. The newly christened Tropical Cyclone Ula turned sharply south and rapidly intensified, attaining hurricane strength the following day. A shift to the southwest brought the system close to the northern islands of Tonga on January 2, 2016. It subsequently brushed several islands in the Lau Group of Fiji before weakening. Nearly degrading to a tropical depression, Ula turned to the northwest and regained strength. After turning back to the southwest, it achieved its peak intensity as a Category 4 on the Australian scale with winds of 185 km/h (115 mph) on January 10. Thereafter, the storm bypassed Vanuatu to the southeast and New Caledonia to the east as it accelerated southward.
The 2021–22 South Pacific cyclone season was a near average tropical cyclone season within the South Pacific Ocean to the east of 160°E. The season officially started from November 1, 2021, and officially ended on April 30, 2022, however a tropical cyclone could form at any time between July 1, 2021, and June 30, 2022, and would count towards the season total. During the season, tropical cyclones will be officially monitored by the Fiji Meteorological Service, Australian Bureau of Meteorology and New Zealand's MetService. The United States Armed Forces through the Joint Typhoon Warning Center (JTWC) will also monitor the basin and issue unofficial warnings for American interests. The FMS attaches a number and an F suffix to tropical disturbances that form in or move into the basin while the JTWC designates significant tropical cyclones with a number and a P suffix. The BoM, FMS and MetService all use the Australian Tropical Cyclone Intensity Scale and estimate windspeeds over a period of ten minutes, while the JTWC estimated sustained winds over a 1-minute period, which are subsequently compared to the Saffir–Simpson hurricane wind scale (SSHWS).