N Atlantic: Storm Alert issued at 21 Oct, 2023 3:00 GMT
Hurricane TAMMY is currently located near 14.7 N 60.2 W with maximum 1-min sustained winds of 70 kts (81 mph). TAMMY is a category 1 storm on the Saffir Simpson Hurricane Wind Scale. TAMMY is forecast to affect land to the following likelihood(s) at the given lead time(s):
Red Alert Country(s) or Province(s)
Guadeloupe
probability for CAT 1 or above is 60% in about 21 hours
probability for TS is 100% within 9 hours
Antigua and Barbuda
probability for CAT 1 or above is 45% in about 21 hours
probability for TS is 95% in about 21 hours
Yellow Alert Country(s) or Province(s)
Barbados
probability for TS is 95% currently
Dominica
probability for CAT 1 or above is 15% within 9 hours
probability for TS is 90% within 9 hours
Martinique
probability for TS is 90% currently
Anguilla
probability for CAT 1 or above is 25% in about 33 hours
probability for TS is 80% in about 33 hours
Montserrat
probability for CAT 1 or above is 20% in about 21 hours
probability for TS is 75% in about 21 hours
the Netherlands Antilles
probability for CAT 1 or above is 15% in about 33 hours
probability for TS is 70% in about 33 hours
St. Kitts and Nevis
probability for CAT 1 or above is 15% in about 21 hours
probability for TS is 70% in about 21 hours
the British Virgin Islands
probability for CAT 1 or above is 10% in about 45 hours
probability for TS is 40% in about 33 hours
Note that
Red Alert (Severe) is CAT 1 or above to between 31% and 100% probability.
Yellow Alert (Elevated) is CAT 1 or above to between 10% and 30% probability, or TS to above 50% probability.
CAT 1 means Hurricane strength winds of at least 74 mph, 119 km/h or 64 knots 1-min sustained.
TS means Tropical Storm strength winds of at least 39 mph, 63 km/h or 34 knots 1-min sustained.
For graphical forecast information and further details please visit https://www.tropicalstormrisk.com/
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This alert is provided by Tropical Storm Risk (TSR).