N Atlantic: Storm Alert issued at 30 Aug, 2023 3:00 GMT
Hurricane IDALIA is currently located near 27.7 N 84.5 W with maximum 1-min sustained winds of 95 kts (109 mph). IDALIA is a category 2 storm on the Saffir Simpson Hurricane Wind Scale. IDALIA is forecast to affect land to the following likelihood(s) at the given lead time(s):
Red Alert Country(s) or Province(s)
the United States
probability for CAT 1 or above is 80% within 9 hours
probability for TS is 100% within 9 hours
Yellow Alert City(s) and Town(s)
Jacksonville (30.3 N, 81.7 W)
probability for TS is 100% in about 21 hours
Tampa (28.0 N, 82.5 W)
probability for TS is 95% within 9 hours
Savannah (32.0 N, 81.0 W)
probability for CAT 1 or above is 30% in about 21 hours
probability for TS is 95% in about 21 hours
Charleston (32.9 N, 80.0 W)
probability for CAT 1 or above is 20% in about 33 hours
probability for TS is 90% in about 33 hours
Tallahassee (30.4 N, 84.3 W)
probability for CAT 1 or above is 10% within 9 hours
probability for TS is 80% within 9 hours
Orlando (29.0 N, 81.5 W)
probability for TS is 75% in about 21 hours
Myrtle Beach (33.7 N, 79.1 W)
probability for CAT 1 or above is 10% in about 33 hours
probability for TS is 75% in about 33 hours
Wilmington (34.2 N, 77.9 W)
probability for TS is 75% in about 33 hours
Hatteras (35.2 N, 75.6 W)
probability for TS is 60% in about 45 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.
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This alert is provided by Tropical Storm Risk (TSR).