| Timeline of the 1990 Pacific hurricane season | |||||
|---|---|---|---|---|---|
 Season summary map | |||||
| Season boundaries | |||||
| First system formed | May 12, 1990 | ||||
| Last system dissipated | November 1, 1990 | ||||
| Strongest system | |||||
| Name | Trudy | ||||
| Maximum winds | 155 mph (250 km/h) (1-minute sustained) | ||||
| Lowest pressure | 924 mbar (hPa; 27.29 inHg) | ||||
| Longest lasting system | |||||
| Name | Trudy | ||||
| Duration | 16.75 days | ||||
| |||||
The 1990 Pacific hurricane season saw a then-record 16 hurricanes form.[1] Throughout the year, 21 tropical cyclones became named storms in the eastern Pacific Ocean. Hurricane Alma formed on May 12, 1990, three days before the season's official start on May 15. The Central Pacific hurricane season began on June 1, covering tropical cyclone formation in the region between 140°W and International Dateline. Hurricane Trudy was the last storm to dissipate, doing so on November 1, nearly a month before the Pacific hurricane season officially ended on November 30.[2]
The season produced twenty-seven tropical depressions, of which twenty-one became named storms, and sixteen strengthened into hurricanes. Six out of the sixteen hurricanes strengthened into major hurricanes.[nb 1] Despite high levels of activity, Rachel was the only system to make landfall, bringing floods to Northwestern Mexico and the Southwestern United States.[1] Thousands were left homeless, and there were 18 confirmed fatalities.[4] Additionally, the remnants of Hurricane Boris brought light showers to California. At that time, Hurricane Hernan was the strongest Pacific hurricane to have its intensity estimated via satellite imagery; this record was matched by Hurricane Trudy months later.[1] One tropical storm formed in the Central Pacific Hurricane Center's warning zone and eventually crossed the International Dateline before dissipating.[5]
This timeline includes information that was not operationally released, meaning that data from post-storm reviews by the National Hurricane Center, such as a storm that was not operationally warned upon, has been included. This timeline documents tropical cyclone formations, strengthening, weakening, landfalls, and dissipations during the season.
- ^ a b c Lixion Avila (1990). "Eastern North Pacific Season of 1990". Monthly Weather Review. 119 (8). National Hurricane Center: 2034. Bibcode:1991MWRv..119.2034A. doi:10.1175/1520-0493(1991)119<2034:ENPHSO>2.0.CO;2. ISSN 1520-0493.
- ^ Chris Landsea and Neal Dorst (June 2, 2011). "G: Tropical Cyclone Climatology". Hurricane Research Division: Frequently Asked Questions. National Oceanic and Atmospheric Administration. G1) When is hurricane season ?. Retrieved April 17, 2013.
{{cite book}}:|work=ignored (help) - ^ Chris Landsea; Neal Dorst (ed.) (June 2, 2011). "A: Basic Definitions". Hurricane Research Division: Frequently Asked Questions. National Oceanic and Atmospheric Administration. A3) What is a super-typhoon? What is a major hurricane ? What is an intense hurricane ?. Retrieved April 16, 2013.
{{cite book}}:|author2=has generic name (help);|work=ignored (help) - ^ "Hurricane Klaus Downgraded". St. Louis Post-Dispatch. October 1, 1990.
- ^ Cite error: The named reference
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Cite error: There are <ref group=nb> tags on this page, but the references will not show without a {{reflist|group=nb}} template (see the help page).