Tropical Storm "Zeta" formed at 06:00 UTC on October 25, 2020, as the 27th named storm of the 2020 Atlantic hurricane season. The storm is expected to bring heavy rains and strong winds to portions of the northwestern Caribbean Sea and adjacent land areas today and Monday, October 26.
Zeta is the 27th named storm of the 2020 Atlantic hurricane season and the earliest forming 27th Atlantic named storm on record. The previous record for the earliest 27th named storm formation was November 29, 2005, Dr. Philip Klotzbach noted.
Zeta is the 4th Atlantic named storm to form since October 2, along with Gamma, Delta and Epsilon. Five other years in satellite era (since 1966) have had 4+ Atlantic named storm formations between October 2 – 25 (1990, 2000, 2005, 2012 and 2019).
The storm is forecast to become a hurricane by Tuesday, October 27. If that forcest verifies, it would be the 11th hurricane of the 2020 Atlantic season to date, Klotzbach noted.
Seven full Atlantic hurricane seasons on record (since 1851) have had 11+ hurricanes (1887, 1993, 1950, 1969, 1995, 2005, and 2010).
A Hurricane Watch is in effect for Tulum to Rio Lagartos; and Cozumel, Mexico.
A Tropical Storm Warning is in effect for Pinar del Rio, Cuba; Tulum to Rio Lagartos, and Cozumel, Mexico.
At 15:00 UTC on October 25, the center of Tropical Storm "Zeta" was located about 470 km (290 miles) SSE of the western tip of Cuba and 445 km (275 miles) SE of Cozumel, Mexico. Its maximum sustained winds were 65 km/h (40 mph) and minimum central pressure 1 005 hPa.
The system is nearly stationary, but a generally NW motion is expected over the next couple of days.
Tropical Storm "Zeta" at 16:30 UTC on October 25, 2020. Credit: NOAA/GOES-16, RAMMB/CIRA
On the forecast track, the center of Zeta will pass south of western Cuba early Monday, October 26, and move near or over the northern Yucatan Peninsula or the Yucatan Channel late Monday, move into the southern Gulf of Mexico on Tuesday, October 27, and reach the central Gulf of Mexico by late Tuesday.
Some strengthening is forecast during the next 48 hours, and Zeta could become a hurricane by the time it moves near or over the Yucatan Peninsula late Monday.
Rainfall totals of 100 – 200 mm (4 to 8 inches) with local amounts of 300 mm (12 inches) are possible through Wednesday along and east-northeast of Zetas track from Jamaica, the Cayman Islands, central to western Cuba, and the northeast Yucatan peninsula of Mexico.
Additional rainfall amounts of 25 – 75 mm (1 to 3 inches) with local amounts of 125 mm (5 inches) are possible across southern Florida and the Keys over the next 2 days, with isolated storm totals of 200 mm (8 inches).
By Wednesday, October 28, heavy rainfall associated with Zeta will begin to affect the central Gulf Coast region, which may lead to flash flooding in urban areas.
Hurricane conditions are possible within the Hurricane Watch area in the Yucatan Peninsula by late Monday.
Tropical storm conditions are expected within the warning area in the Yucatan peninsula late Monday, and could occur in the warning area in Western Cuba on Monday.
A dangerous storm surge will raise water levels by as much as 0.3 – 0.9 m (1 – 3 feet) above normal tide levels along the immediate coast in the Hurricane Watch area near and to the north of where the center makes landfall in the Yucatan Peninsula.
Featured image: Tropical Storm "Zeta" at 16:30 UTC on October 25, 2020. Credit: NOAA/GOES-16, RAMMB/CIRA
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