Hurricane Waldo

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Saffir–Simpson scale
  Tropical depression (≤38 mph, ≤62 km/h)
  Tropical storm (39–73 mph, 63–118 km/h)
  Category 1 (74–95 mph, 119–153 km/h)
  Category 2 (96–110 mph, 154–177 km/h)
  Category 3 (111–129 mph, 178–208 km/h)
  Category 4 (130–156 mph, 209–251 km/h)
  Category 5 (≥157 mph, ≥252 km/h)
  Unknown
Storm type
Disc Plain black.svg Tropical cyclone
Solid black.svg Subtropical cyclone
ArrowUp.svg Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

Waldo originated from a developing disturbance first noted by Eastern Pacific Hurricane Center (EPHC) on October 5 based on data from ship reports. By 0000 UTC October 7, a circulation became evident on satellite imagery. [1] Based on this, the EPHC upgraded the system into a tropical depression about 300 mi (480 km) west of the Mexican coast. [2] Upon becoming a tropical cyclone, the depression began to turn to the northwest in response to a strong upper-level trough over Baja California Peninsula. Passing over 86 °F (30 °C) sea surface temperatures, the tropical cyclone intensified into Tropical Storm Waldo about 12 hours after developing. The storm began to intensify rapidly. Meanwhile, the tropical storm passed 92 mi (148 km) east of Socorro Island. Tropical Storm Waldo then began to turn to the north and while located 130 mi (210 km) south of Baja California Sur, Waldo was upgraded into a Category 1 hurricane on the Saffir–Simpson hurricane scale. [1]

After reaching hurricane status the strengthening cyclone attained Category 2 hurricane status on October 9. [2] Shortly thereafter, a ship reported a sea level pressure of 982 mb (29.0 inHg) just outside the center of circulation. Meanwhile, Hurricane Waldo reached its peak intensity of 105 mph (165 km/h). [1] Four hours after Hurricane Waldo's peak, the storm made landfall near Culiacán. The storm rapidly dissipated during the afternoon of October 9, while the system was located inland over Mexico. [1] The remnants of Waldo merged with a cold front and produced heavy rains across the Great Plains and Mississippi River Valley. [3]

Preparations and impact

Hurricane Waldo intensifying as it approached the Baja Peninsula on October 8 Waldo 1985-10-08 2131Z.png
Hurricane Waldo intensifying as it approached the Baja Peninsula on October 8

In parts of Sinaloa, people were evacuated and then granted refuge in shelters. In Los Mochis, the Mexican Army was put on standby in the event the Fuerte River flooded. [4] While no deaths or injuries were reported, [5] much farmland and 600 houses were destroyed. [1] The Juarez River bursts its banks, flooding at least eight neighborhoods in Culiacán. Telephone service in Los Mochis, Guarmuchil, and Guasave was cut when a communications tower was blown over. [4] In Los Mochis, some schools and homes were destroyed and a few trees were uprooted. [6] A total of 10,000 people were left homeless across the state. [7] The peak rainfall total in Mexico from Waldo was 9.61 inches (244 mm) in Jocuixtita/San Ignacio; heavy rain was also recorded along southern Baja California Sur. [3]

In the United States, heavy rainfall prompted flood watches for most of west Texas. [8] The National Weather Service even noted the possibility of 12 in (300 mm) of rain in some areas across the state. [9] Waldo contributed to rain heavy enough to cause some flash flooding in the Permian Basin area of Texas. Flood waters rose, leaving motorists stranded. [10] One motorist was stranded for 30 minutes before begin rescued by another car. [9] Odessa, Texas received about 2 in (51 mm) in a four and half-hour period. [8] Torrential rainfall was recorded in Texas, [10] but the highest official rainfall total in the United States was 6.6 in (170 mm), recorded in Hobbs, New Mexico. [3] Flash floods affected the southern one–third of the state from rainfall associated from Waldo. Damage was estimated between $100,000–$1 million (1985 USD), mostly to crops, roads, and buildings. [11]

With help from a cold front, Waldo contributed to major flooding in Kansas that forced many rivers and creeks to overflow their banks. A total of 4.5 in (110 mm) of rain fell in some locations. In the rural town of Raymond, a 52-year-old man died from a heart attack while moving to higher ground due to rising floodwaters. Approximately 15 people were evacuated from their homes in Easton due to the overflow of the nearby Stranger Creek. Some of the evacuated resident slept at the nearby senior center for the night where the American Red Cross delivered items such as blankets, food, and clothes to the victims of the flood. In Kansas City, Waldo produced 1 ft (30 cm) of water on roads, but none of the nearby homes received extensive damage. The Sedgwick County, the county fire department freed 35 trapped people from rising flood waters, six of which were rescued via helicopter. County workers were forced to use sandbags to prevent the dike along Cowskin creek from breaking. The Salt Creek overflowed its banks; subsequently, Highway 68 closed in Osage County. [12] Within six days after the dissipation of Hurricane Waldo, the remnants had produced heavy rainfall as far north as Michigan with flooding recorded as far north as Iowa. Waldo's rain were comparable to Atlantic Hurricane Gloria though the wind speeds were much lower. [13]

See also

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References

  1. 1 2 3 4 5 E.B. Gunther and R.L. Cross (September 1986). "East North Pacific Tropical Cyclones of 1985". Monthly Weather Review. 1936 (10): 1931. Bibcode:1986MWRv..114.1931G. doi: 10.1175/1520-0493(1986)114<1931:ENPTCO>2.0.CO;2 . ISSN   1520-0493.
  2. 1 2 National Hurricane Center; Hurricane Research Division; Central Pacific Hurricane Center (April 26, 2024). "The Northeast and North Central Pacific hurricane database 1949–2023". United States National Oceanic and Atmospheric Administration's National Weather Service. Archived from the original on May 29, 2024. A guide on how to read the database is available here. PD-icon.svg This article incorporates text from this source, which is in the public domain.
  3. 1 2 3 David M. Roth. "Hurricane Waldo" (GIF). Hydrometeorological Prediction Center . Retrieved March 6, 2009.
  4. 1 2 "Hurricane Waldo Floods Mexico". Gettysburg Times. October 10, 1985. p. 3.
  5. ↑ "Hurricane damage slight". Pittsburgh Post-Gazette. October 11, 1985. Retrieved July 23, 2011.
  6. ↑ Staff Writer (October 10, 1985). "Flee to Waldo in Mexico". Montreal Gazette. Retrieved October 24, 2010.
  7. ↑ "Hurricane hits Mexican coast". Eugene Register-Guard . November 9, 1985. Retrieved October 23, 2010.[ permanent dead link ]
  8. 1 2 "Heavy Rains Cover Permian Basin Area". The Victoria Advocate . October 9, 1985. Retrieved July 23, 2011.
  9. 1 2 "Heavy rain floods street in Midland Oddesa". Dallas Morning News . October 10, 1985.
  10. 1 2 "Records Shatter as Butte Shivers". Gainesville Sun . October 10, 1985. Retrieved July 23, 2011.
  11. ↑ "Storm Data October 1985" (PDF). 27 (10). National Climatic Data Center: 25. Archived from the original (PDF) on March 20, 2013. Retrieved March 26, 2012.{{cite journal}}: Cite journal requires |journal= (help)
  12. ↑ "One killed in flooding across the state". Junction City Daily Union . October 11, 1985. Retrieved July 23, 2011.
  13. ↑ "Hurricanes hitting Southwest They do?". The Lewiston Journal . October 15, 1985. Retrieved July 23, 2011.
Hurricane Waldo
Waldo 1985-10-09 0430Z.png
Hurricane Waldo at peak intensity just southeast of the tip of the Baja Peninsula on October 9
Tropical cyclones of the 1985 Pacific hurricane season
1985 Pacific hurricane season summary map.png
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