S Indian Ocean: Storm Alert issued at 13 Apr, 2023 18:00 GMT (Final Warning)
Very Intense TC ILSA is currently located near 20.5 S 119.9 E with maximum 1-min sustained winds of 115 kts (132 mph). ILSA is a category 4 storm on the Saffir Simpson Hurricane Wind Scale. ILSA is forecast to affect land to the following likelihood(s) at the given lead time(s):
Red Alert Country(s) or Province(s)
Australia
probability for CAT 1 or above is 100% currently
probability for TS is 100% currently
Red Alert City(s) and Town(s)
Telfer (21.7 S, 122.2 E)
probability for CAT 1 or above is 50% within 12 hours
probability for TS is 70% within 12 hours
Yellow Alert City(s) and Town(s)
Marble Bar (21.2 S, 119.8 E)
probability for CAT 1 or above is 30% currently
probability for TS is 100% currently
Wallal Downs (19.8 S, 120.8 E)
probability for TS is 80% currently
Nullagine (21.9 S, 120.1 E)
probability for TS is 75% currently
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 Tropical Cyclone 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).