Hurricane Delta
Meteorological history | |
---|---|
Formed | October 4, 2020 |
Extratropical | October 10, 2020 |
Dissipated | October 12, 2020 |
Category 4 major hurricane | |
1-minute sustained (SSHWS/NWS) | |
Highest winds | 140 mph (220 km/h) |
Lowest pressure | 953 mbar (hPa); 28.14 inHg |
Overall effects | |
Fatalities | 6 |
Damage | $3.09 billion (2020 USD) |
Areas affected | Jamaica, Nicaragua, Cayman Islands, Yucatán Peninsula, Gulf Coast of the United States, Eastern United States |
IBTrACS / [1] | |
Part of the 2020 Atlantic hurricane season |
Hurricane Delta was the record-tying fourth
Widespread
Meteorological history
At 00:00 UTC on October 1, the National Hurricane Center (NHC) began to monitor a tropical wave moving into the Eastern Caribbean for potential development.[3] It moved steadily westward at 15–20 miles per hour (24–32 km/h) and began to organize late on October 3.[4] A well-defined center of circulation formed with sufficiently organized deep convection around 18:00 UTC on October 4, marking the formation of Tropical Depression Twenty-Six. Thunderstorm activity continued to increase after formation, but was initially confined to the southern portion of the circulation due to northerly wind shear. Once the shear lessened on October 5, convection became more symmetric around the center, and the system strengthened to become Tropical Storm Delta by 12:00 UTC that day about 150 mi (240 km) south-southwest of Montego Bay, Jamaica.[1]
Continuing westward in defiance of forecasts that repeatedly predicted a northwestward turn, Delta began a period of
Delta reached its initial peak intensity at 18:00 UTC, with winds of 140 mph (230 km/h) and a pressure of 953 mbar (28.1 inHg), an unusually high pressure for a storm this strong, which indicated that Delta's circulation did not extend as far into the upper troposphere as would be expected for a storm of its intensity.[13] Additionally, the storm's eye was barely visible on visible satellite imagery, although it was seen on microwave images. Delta did not keep this intensity for very long as an increase in mid-level wind shear and dry air entrainment significantly disrupted Delta's small core, and the storm abruptly weakened with its banding features becoming less defined and its eye completely disappearing.[14] It accelerated northwestward and at around 05:45 UTC on October 7, the storm made landfall at Puerto Morelos, Quintana Roo, Mexico, as a high-end Category 2 storm with winds of 110 mph (180 km/h).[15] It subsequently weakened some more as it moved over the Yucatán Peninsula and into the Gulf of Mexico, north of the Dzilam de Bravo State Reserve,[16] as an 85 mph (137 km/h) Category 1 hurricane at 21:00 UTC on October 7.[17] Afterward, Delta finally began to reorganize and it regained Category 2 intensity at 06:00 UTC on October 8.[18]
Delta steadily became more organized on the morning of October 8, with an eye occasionally becoming evident on satellite imagery and a lowering minimum central pressure as it turned northward ahead of an approaching trough to its northwest.[19] Delta regained Category 3 intensity at 21:00 UTC, before reaching its secondary peak intensity at 00:00 UTC on October 9, with its minimum pressure again dropping to 953 mbar (28.1 inHg) and sustained winds increasing to 120 mph (190 km/h).[20][21] Delta held that intensity for six hours as it turned due north before moving into a hostile environment of cooler waters, drier air, and increasing wind shear. This caused Delta to begin a slow weakening trend as its eye clouded over and its convective pattern became ragged. It was downgraded to a Category 2 hurricane at 18:00 UTC as it turned north-northeastward towards land.[22][23] Delta then made landfall near Creole, Louisiana with winds of 100 mph (160 km/h) and a pressure of 970 mbar (29 inHg) at 23:00 UTC.[24] After that, Delta began to weaken more rapidly, dropping to Category 1 status an hour after landfall at 00:00 UTC on October 10 and a tropical storm six hours later.[25][26] It accelerated northeastward and transitioned into an extratropical cyclone over Western Mississippi by 18:00 UTC. The system continued to weaken and its circulation broadened through the day on October 11, and by 00:00 on October 12, it opened into a trough of low pressure over the southeastern United States.[1]
Preparations
Cayman Islands and Cuba
When the initial advisory was issued for Potential Tropical Cyclone Twenty-Six, a hurricane
Mexico
As Delta was nearing landfall in Quintana Roo, many communities were still being impacted by the
United States
Alabama
Tourists and visitors were ordered to leave Alabama's barrier islands as of October 6 while a state of emergency was also declared for the state.[38]
Mississippi
Louisiana
The area that Delta threatened was the same area affected by the stronger
On October 6,
In college football, a matchup between Louisiana-Lafayette and Coastal Carolina was postponed to October 14.[49] The matchup between LSU and Missouri was relocated to Faurot Field in Columbia, Missouri as well.[50] More than 1,000 Louisiana National Guardsmen, 7,500 utility workers, and dozens of high water rescue vehicles, boats, and aircraft were put on standby. Another 8,000 utility workers were waiting outside the state.[43]
Elsewhere
On October 5, the
Impact
Mexico
The storm brought
United States
25,000 customers in Texas and Louisiana lost power before Delta made landfall.[43] That number soon rose to 740,000 as Delta pulled inland.[61]
Louisiana
Delta made landfall just 12 miles (19 km) east of where
Mississippi
Delta uprooted many trees across Mississippi. One tree landed on a news vehicle while its crew was inside in
Alabama, Georgia, and the Carolinas
Widespread tornado warnings were issued throughout the rest of the Southeast and 13 other tornadoes were confirmed on October 10-11.[77][78][79][80] On October 10 in Georgia, an EF1 tornado damaged a homeless shelter in Covington, injuring two people and displacing 30 others.[81][82][83] The next day, an EF1 tornado in Latta, South Carolina, destroyed a storage shed and damaged a billboard, mobile home, home, and trees. Later, another EF1 tornado in Conway, South Carolina snapped and uprooted trees, significantly damaged a home and old barn, and caused minor damage to a storage shed and another home, injuring one person. An EF1 tornado in Nakina, North Carolina damaged the roof and carport of a home as well as an outbuilding.[84]
Elsewhere
The precursor to Delta brought squally weather in the
Aftermath
Mexico
In
United States
Louisiana
In the immediate aftermath of Delta, Louisiana Governor John Bel Edwards stated that tens of thousands would need help recovering after the storm's destruction.[92] He also surveyed damage in areas hard-hit by the hurricane.[93]
Records and naming
Delta was the earliest 25th tropical or subtropical storm on record in an Atlantic hurricane season, surpassing the old mark of November 15, set by
The 2020 season was the second (along with 2005) in which an alphabetic list of 21 storm names had been exhausted, necessitating use of the Greek alphabet auxiliary list. In March 2021, the World Meteorological Organization replaced that auxiliary list with a new 21-name supplemental list. As a result, the letter Delta will not be used to name another Atlantic hurricane.[98]
See also
- Tropical cyclones in 2020
- List of Category 4 Atlantic hurricanes
- List of Louisiana hurricanes (2000–present)
- List of costliest Atlantic hurricanes
- Hurricane Audrey (1957) – Deadly Category 3 hurricane that made landfall near the Texas–Louisiana state line.
- Hurricane Wilma (2005) – Category 5 hurricane that also explosively intensified, becoming the strongest Atlantic hurricane ever recorded before striking the Yucatán Peninsula as a Category 4 storm.
- Hurricane Gustav (2008) – Category 4 hurricane that devastated the Western Caribbean before impacting Louisiana as a Category 2 storm.
- Hurricane Zeta (2020) – Category 3 hurricane that took a similar track three weeks later.
References
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ignored (help) - ^ Herzmann, Daryl. "IEM :: Storm Based Warning Polygon Visual Summary". mesonet.agron.iastate.edu. Retrieved 11 October 2020.
- ^ Herzmann, Daryl. "IEM :: Storm Based Warning Polygon Visual Summary". mesonet.agron.iastate.edu. Retrieved 11 October 2020.
- ^ Herzmann, Daryl. "IEM :: Storm Based Warning Polygon Visual Summary". mesonet.agron.iastate.edu. Retrieved 11 October 2020.
- ^ Herzmann, Daryl. "IEM :: Storm Based Warning Polygon Visual Summary". mesonet.agron.iastate.edu. Retrieved 12 October 2020.
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- ^ McLaughlin, Eliott C.; axouris, Christina (11 October 2020). "Hurricane Delta leaves one dead in Louisiana and brings tornado threat to Carolinas". CNN.
- ^ "Storm Prediction Center 201011's Storm Reports". www.spc.noaa.gov. Retrieved 12 October 2020.
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- ^ Cangialosi, John (3 October 2020). "Two-Day Graphical Tropical Weather Outlook". www.nhc.noaa.gov. National Hurricane Center. Retrieved 5 October 2020.
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- ^ Klotzbach, Philip [@philklotzbach] (5 October 2020). "#Delta has formed in the central Caribbean - the 25th Atlantic named storm of the 2020 Atlantic #hurricane season to date and earliest 25th Atlantic named storm on record. Old record was November 15, 2005" (Tweet). Retrieved 6 October 2020 – via Twitter.
- ^ a b Erdman, Jonathan (6 October 2020). "Hurricane Delta Fastest on Record to Rapidly Intensify From Tropical Depression to Category 4 in Atlantic Basin". weather.com. Retrieved 12 November 2020.
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- ^ Morrow, Jeff; Caparotta, Steve (10 October 2020). "Delta makes 4th La. landfall of 2020 hurricane season". WAFB.
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External links
- The National Hurricane Center's Advisory Archive on Hurricane Delta
- National Hurricane Center (NHC)
- Hurricane Delta caused floods and landslides in JAMAICA - Oct. 6, 2020