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2020 Atlantic hurricane season

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Template:Infobox hurricane season The 2020 Atlantic hurricane season is an ongoing event in the annual cycle of tropical cyclone formation. The season officially starts on June 1 and ends on November 30, dates that conventionally delimit the period of each year when most tropical cyclones form in the Atlantic basin. However, the formation of tropical cyclones is possible at any time, as shown by the formation of Tropical Storm Arthur on May 16, marking the sixth consecutive year with a pre-season system.

Seasonal forecasts[edit source | edit]

Predictions of tropical activity in the 2020 season
Source Date Named
storms
Hurricanes Major
hurricanes
Ref
Average (1981–2010) 12.1 6.4 2.7 [1]
Record high activity 28 15 7 Template:Atlantic hurricane best track
Record low activity 4 2 0 [2]
–––––––––––––––––––––––––––––––––––––––––––––––––––––––
TSR December 19, 2019 15 7 4 [3]
CSU April 2, 2020 16 8 4 [4]
TSR April 7, 2020 16 8 3 [5]
UA April 13, 2020 19 10 5 [6]
TWC April 15, 2020 18 9 4 [7]
NCSU April 17, 2020 18–22 8–11 3–5 [8]
–––––––––––––––––––––––––––––––––––––––––––––––––––––––
Actual activity
1 0 0
* June–November only
† Most recent of several such occurrences. (See all)

Forecasts of hurricane activity are issued before each hurricane season by noted hurricane experts such as Philip J. Klotzbach and his associates at Colorado State University; and separately by NOAA forecasters.

Klotzbach's team (formerly led by William M. Gray) defined the average (1981 to 2010) hurricane season as featuring 12.1 tropical storms, 6.4 hurricanes, 2.7 major hurricanes (storms reaching at least Category 3 strength in the Saffir-Simpson Hurricane Scale), and an accumulated cyclone energy (ACE) index of 106 units.[4] NOAA defines a season as above-normal, near-normal or below-normal by a combination of the number of named storms, the number reaching hurricane strength, the number reaching major hurricane strength, and the ACE Index.[9]

Pre-season forecasts[edit source | edit]

On December 19, 2019, Tropical Storm Risk (TSR), a public consortium consisting of experts on insurance, risk management, and seasonal climate forecasting at University College London, issued an extended-range forecast predicting a slightly above-average hurricane season. In its report, the organization called for 15 named storms, 7 hurricanes, 4 major hurricanes, and an ACE index of 105 units. This forecast was based on the prediction of near-average trade winds and slightly warmer than normal sea surface temperatures (SSTs) across the tropical Atlantic as well as a neutral El Niño–Southern Oscillation phase in the equatorial Pacific.[3] On April 2, 2020, forecasters at Colorado State University echoed predictions of an above-average season, forecasting 16 named storms, 8 hurricanes, 4 major hurricanes, and an ACE index of 150 units. The organization posted significantly heightened probabilities for hurricanes tracking through the Caribbean and hurricanes striking the U.S. coastline.[4] TSR updated their forecast on April 7, predicting 16 named storms, 8 hurricanes, 3 major hurricanes, and an ACE index of 130 units.[5] On April 13, the University of Arizona (UA) predicted a potentially hyperactive hurricane season: 19 named storms, 10 hurricanes, 5 major hurricanes, and accumulated cyclone energy index of 163 units.[6] A similar prediction of 18 named storms, 9 hurricanes, and 4 major hurricanes was released by The Weather Company on April 15.[7] Following that, the North Carolina State University released a similar forecast on April 17, also calling for a possibly hyperactive season with 18–22 named storms, 8–11 hurricanes and 3–5 major hurricanes.[8]

Seasonal summary[edit source | edit]

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Systems[edit source | edit]

Tropical Storm Arthur[edit source | edit]

Template:Infobox hurricane current

On May 12, the National Hurricane Center noted an area of low pressure was expected to develop over subsequent days northeast of the Bahamas.[10] Early on May 14, the NHC began to monitor an area of shower and thunderstorm activity over the Straits of Florida for development.[11] The system moved generally northeast into the region of the Bahamas while steadily organizing, becoming the season's first tropical depression at 21:00 UTC on May 16.[12] Another reconnaissance aircraft investigated the system several hours later and found supporting evidence for the NHC to upgrade the depression to Tropical Storm Arthur at 03:00 UTC on May 17.[13] Featuring the formation of a pre-season tropical storm, the 2020 Atlantic hurricane season became the sixth consecutive season with a tropical cyclone before the official June 1 start date.[14]

Current storm information[edit source | edit]

As of 11:00 P.M. EDT May 16 (03:00 UTC May 17), Tropical Storm Arthur is located within 20 nautical miles of 29°24′N 77°42′W / 29.4°N 77.7°W / 29.4; -77.7 (One), about 125 mi (200 km) east of Melbourne, Florida, or about 505 mi (810 km) south-southwest of Cape Hatteras, North Carolina. Maximum sustained winds are 35 kn (40 mph; 65 km/h), with gusts up to 45 kn (50 mph; 85 km/h). The minimum barometric pressure is 1006 mbar (29.71 inHg), and the system is moving north-northeast at 11 kn (13 mph; 20 km/h).

For the latest official information, see:

Template:HurricaneWarningsTable

Storm names[edit source | edit]

The following list of names will be used for named storms that form in the North Atlantic in 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).[15] The names not retired from this list will be used again in the 2026 season. This is the same list used in the 2014 season, as no names were retired from that year.

Season effects[edit source | edit]

This is a table of all of the storms that have formed in the 2020 Atlantic hurricane season. It includes their duration, names, landfall(s) – denoted by bold location names, 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 wave, or a low, and all of the damage figures are in 2020 USD.

Template:Saffir-Simpson small

Template:TC stats table start3 Template:TC stats cyclone3

Template:TC stats table end3

See also[edit source | edit]

References[edit source | edit]

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External links[edit source | edit]

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