Tropical Storm Gamma Forms In The Western Caribbean

Tropical Depression Twenty-Five has strengthened into Tropical Storm Gamma on Friday night.

This is the 25th tropical cyclone of the 2020 Atlantic Hurricane Season and the earliest 24th named storm in Atlantic history. The previous record for the 24th named storm was Beta, on October 27th, 2005. The last (and only) time Gamma was used in the Atlantic was on November 15th, 2005.

This tropical cyclone is not forecast to impact Trinidad, Tobago, or the Lesser Antilles. This system spawned from Tropical Wave 52 which impacted our area last weekend.

List of names for the 2020 Atlantic Hurricane Season. The next named tropical cyclone will be called Delta.

At 8:00 PM AST, the center of Tropical Storm Gamma was located near latitude 18.8 North, longitude 85.8 West. Gamma is moving toward the northwest near 9 mph (15 km/h), and a gradual turn toward the north-northwest with a decrease in forward speed is expected over the next couple of days. On the forecast track, the center of the tropical cyclone should be near the northeastern Yucatan Peninsula on Saturday.

Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Slow strengthening is forecast during the next few days. The estimated minimum central pressure based on data from the Air Force Hurricane Hunters is 1000 millibars.

Tropical Storm Gamma Forecast Track as of 8:00 PM AST Friday 2nd October 2020. (National Hurricane Center)
Tropical Storm Gamma Forecast Track as of 8:00 PM AST Friday 2nd October 2020. (National Hurricane Center)

Watches & Warnings

Tropical Storm Gamma Watches and Warnings as of 8:00 PM AST Friday 2nd October 2020. (National Hurricane Center)
Tropical Storm Gamma Watches and Warnings as of 8:00 PM AST Friday 2nd October 2020. (National Hurricane Center)

A Tropical Storm Warning is in effect for:

  • Punta Herrero to Cabo Catoche, Mexico

A Tropical Storm Watch is in effect for:

  • South of Punta Herrero to Puerto Costa Maya, Mexico
  • West of Cabo Catoche to Dzilam, Mexico

A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours.

A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours.

For storm information specific to your area, please monitor products issued by your national meteorological service.

Hazards Affecting Land

Tropical Storm Gamma probabilities for tropical-storm-force winds as of 5:00 PM AST Friday 2nd October 2020, as well as the most likely time of arrival of tropical-storm-force winds. (National Hurricane Center)
Tropical Storm Gamma probabilities for tropical-storm-force winds as of 5:00 PM AST Friday 2nd October 2020, as well as the most likely time of arrival of tropical-storm-force winds. (National Hurricane Center)

RAINFALL: Gamma is expected to produce rainfall of 4 to 8 inches with isolated maximum amounts of 12 inches in portions of the Yucatan Peninsula and far western Cuba. A separate area of significant rain is expected to develop well away from the center in the Mexican states of Campeche, Tabasco, and northern Chiapas with rainfall of 8 to 12 inches and isolated maximum amounts of 20 inches. This rainfall may produce life-threatening flash floods and mudslides.

Rainfall of 1 to 3 inches with maximum amounts of 5 inches is expected in the Bay Islands of Honduras and over the Cayman Islands.

WIND: Tropical storm conditions are expected within the Tropical Storm Warning area by Saturday morning, and are possible within the Tropical Storm Watch area on Saturday and Sunday.

This system is of no direct threat to the Windward Islands, including Trinidad and Tobago.

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