2020 Pacific hurricane season

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Template:Infobox hurricane season The 2020 Pacific hurricane season is an ongoing event in the annual cycle of tropical cyclone formation, in which tropical cyclones form in the eastern Pacific Ocean. The season featured the earliest start to the season east of 140°W on record, surpassing Tropical Storm Adrian in 2017. The season officially began on May 15 in the East Pacific Ocean, and will begin on June 1 in the Central Pacific; they will both end on November 30. These dates conventionally delimit the period of each year when most tropical cyclones form in the Pacific basin. However, the formation of tropical cyclones is possible at any time of the year, as shown by the formation of Tropical Depression One-E on April 25. The formation of One-E resulted in the earliest start to a season in the Eastern Pacific since reliable records began in 1966.

Seasonal forecasts[edit source | edit]

Record Named
Hurricanes Major
Average (1981–2010): 15.4 7.6 3.2 [1]
Record high activity: 1992: 27 2015: 16 2015: 11 Template:EPAC hurricane best track
Record low activity: 2010: 8 2010: 3 2003: 0 Template:EPAC hurricane best track
Date Source Named
Hurricanes Major
May 20, 2020 SMN 15–18 8–10 4–5 [2]
May 21, 2020 NOAA 11–18 5–10 1–5 [3]
Area Named
Hurricanes Major
Actual activity: EPAC 0 0 0
Actual activity: CPAC 0 0 0
Actual activity: 0 0 0

On May 20, 2020, the Servicio Meteorológico Nacional (SMN) issued its forecast for the season, predicting a total of 15–18 named storms, 8–10 hurricanes, and 4–5 major hurricanes to develop.[2] The next day, the National Oceanic and Atmospheric Administration (NOAA) issued their outlook, calling for a below-normal to near-normal season with 11–18 named storms, 5–10 hurricanes, 1–5 major hurricanes, and an Accumulated Cyclone Energy index of 60% to 135% of the median. Factors they expected to reduce activity were near- or below-average sea surface temperatures across the eastern Pacific and the El Niño–Southern Oscillation remaining in the neutral phase, with the possibility of a La Niña developing.[3]

Seasonal summary[edit source | edit]

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Although hurricane season in the eastern Pacific does not officially begin until May 15, and on June 1 in the central Pacific,[4] activity this year began several weeks prior with the formation of the first tropical depression on April 25. This marked the earliest formation of a tropical cyclone in the basin, surpassing 2017's Tropical Storm Adrian.[5]

Systems[edit source | edit]

Tropical Depression One-E[edit source | edit]

Template:Infobox hurricane small

On April 23, the National Hurricane Center (NHC) issued a Special Tropical Weather Outlook (STWO) for a broad area of low pressure located several hundred miles south of the tip of the Baja California Peninsula for potential development into a tropical cyclone.[6] Subsequently, the trough began to quickly organize with convection appearing to wrap around the elongated center of circulation. The low, supported by excellent outflow on its northern side, developed slowly throughout the day and into April 24 as it broke away from the Intertropical Convergence Zone, therefore the NHC assigned it a high possibility of formation in the next 48 hours on the following day due to these increases in organization.[7] However, by later April 24, shower and thunderstorm activity near the center began to diminish, yet the center became slightly more rounded.[8] On April 25, soon indicated by an ASCAT pass, the low developed a much more well-defined center overnight and new thunderstorms began to fully obscure the circulation. Around this time, the NHC upgraded the system to Tropical Depression One-E around 15:00 UTC on April 25, marking the earliest formation of a tropical cyclone in the basin to the east of the 140°W longitude since reliable records began in 1966, with the storm forming over three weeks early from the official start of the season.[9][5] The previous record for earliest forming storm was held by Tropical Storm Adrian of 2017, which formed on May 9.[9]

The depression drifted northwestwards after its formation, with much of its convection displaced to the south of the center as a result of increasing dry air surrounding the system.[10] However, a small convective burst allowed the depression to continue retaining its intensity despite dry air beginning to wrap into the circulation.[9] By April 26, dry air, increasing wind shear and cooling sea surface temperatures began to finally overthrow the small cyclone and deep convection near the center quickly began to dissipate leaving an exposed, ill-defined center displaced from what little thunderstorms remained, barely fitting the criteria for a tropical cyclone altogether.[11] The depression was declared to have dissipated and become a poorly defined remnant low by later that same day, due to a struggle to re-develop convection and increasingly stable air surrounding the center.[12] The next day, the remnant low fully dissipated.

Tropical Depression Two-E[edit source | edit]

Template:Infobox hurricane current

Current storm information[edit source | edit]

As of 4:00 p.m. CDT (21:00 UTC) May 30, Tropical Depression Two-E is located at 12°18′N 91°06′W / 12.3°N 91.1°W / 12.3; -91.1 (Two-E), about 110 miles (180 km) south of Puerto San José, Guatemala. Maximum sustained winds are 25 knots (30 mph; 45 km/h), with gusts up to 35 knots (40 mph; 65 km/h). The minimum barometric pressure is 1006 mbar (29.71 inHg), and the system is moving north-northeast at 3 kn (3 mph; 6 km/h).

For the latest official information, see:

Watches and warnings[edit source | edit]


Storm names[edit source | edit]

The following names will be used for named storms that form in the northeastern Pacific Ocean during 2020. Retired names, if any, will be announced by the World Meteorological Organization during the 42nd Session of the RA IV Hurricane Committee in the spring of 2021 (in concurrence with any names from the 2019 season). The names not retired from this list will be used again in the 2026 season.[13] This is the same list used in the 2014 season, with the exception of the name Odalys, which replaced Odile.

For storms that form in the Central Pacific Hurricane Center's area of responsibility, encompassing the area between 140 degrees west and the International Date Line, all names are used in a series of four rotating lists.[14] The next four names that will be slated for use in 2020 are shown below.

Season effects[edit source | edit]

This is a table of all the storms that have formed in the 2020 Pacific hurricane season. It includes their duration, names, landfall(s), denoted in parentheses, damages, and death totals. Deaths in parentheses are additional and indirect (an example of an indirect death would be a traffic accident), but were still related to that storm. Damage and deaths include totals while the storm was extratropical, a tropical wave, or a low, and all the damage figures are in 2020 USD.

Template:Saffir-Simpson small

Template:TC stats table start3

Template:TC stats cyclone3 Template:TC stats cyclone3

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See also[edit source | edit]

References[edit source | edit]

  1. "Background Information: East Pacific Hurricane Season". Climate Prediction Center. College Park, Maryland: National Oceanic and Atmospheric Administration. May 22, 2014. Retrieved May 29, 2014.
  2. 2.0 2.1 "Pronóstico de Ciclones Tropicales 2020". smn.cna.gob.mx.
  3. 3.0 3.1 "NOAA 2020 Eastern Pacific Hurricane Season Outlook". Climate Prediction Center. May 21, 2020. Archived from the original on May 28, 2020. Retrieved May 21, 2020.
  4. Dorst Neal. When is hurricane season? (Report). Atlantic Oceanographic and Meteorological Laboratory. Archived from the original on 6 December 2010.
  5. 5.0 5.1 Mersereau, Dennis (April 25, 2020). "The Eastern Pacific Ocean Just Saw Its Earliest Tropical Cyclone On Record". Forbes. Retrieved May 2, 2020.
  6. Andrew Latto; Daniel Brown (April 25, 2020). "NHC Graphical Outlook Archive". National Hurricane Center. Retrieved April 25, 2020.
  7. Andrew Latto (April 25, 2020). "NHC Graphical Outlook Archive". National Hurricane Center. Retrieved April 25, 2020.
  8. Latto, Andrew. "NHC Graphical Outlook Archive". www.nhc.noaa.gov. Retrieved 2020-04-25.
  9. 9.0 9.1 9.2 David Zelinsky (April 25, 2020). "Tropical Depression ONE-E". National Hurricane Center. Retrieved April 25, 2020.
  10. Cangialosi, John. "Tropical Depression One-E Discussion Number 3". National Hurricane Center.
  11. Stewart, Stacy. "Tropical Depression One-E Discussion Number 5". National Hurricane Center.
  12. Stewart, Stacy. "Post-Tropical Cyclone One-E Discussion Number 6". National Hurricane Center.
  13. "Tropical Cyclone Names". National Hurricane Center. National Oceanic and Atmospheric Administration. 2013-04-11. Archived from the original on May 8, 2013. Retrieved May 8, 2013.
  14. "Pacific Tropical Cyclone Names 2016-2021". Central Pacific Hurricane Center. National Oceanic and Atmospheric Administration. May 12, 2016. Archived from the original (PHP) on December 30, 2016.

External links[edit source | edit]

Template:2020 Pacific hurricane season buttons Template:TC Decades Template:Tropical cyclone season

Visibility[edit source | edit]

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