N Atlantic: Storm Alert issued at 11 Sep, 2018 3:00 GMT
Intense Hurricane FLORENCE is currently located near 25.9 N 62.4 W with maximum 1-min sustained winds of 120 kts (138 mph). FLORENCE is a category 4 storm on the Saffir Simpson Hurricane Wind Scale. FLORENCE is forecast to affect land to the following likelihood(s) at the given lead time(s):
Yellow Alert Country(s) or Province(s)
the United States
probability for CAT 1 or above is 25% in about 69 hours
probability for TS is 50% in about 69 hours
Yellow Alert City(s) and Town(s)
Hatteras (35.2 N, 75.6 W)
probability for CAT 1 or above is 25% in about 69 hours
probability for TS is 45% in about 69 hours
Wilmington (34.2 N, 77.9 W)
probability for CAT 1 or above is 20% in about 69 hours
probability for TS is 40% in about 69 hours
Kitty Hawk (36.1 N, 75.7 W)
probability for CAT 1 or above is 15% in about 69 hours
probability for TS is 45% in about 69 hours
Norfolk (36.9 N, 76.2 W)
probability for CAT 1 or above is 10% in about 69 hours
probability for TS is 35% in about 69 hours
Raleigh (35.8 N, 78.6 W)
probability for CAT 1 or above is 10% in about 117 hours
probability for TS is 30% in about 69 hours
Note that
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).