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Igor (11L) Becomes Post-Tropical, but Newfoundland Still at Risk from High Winds – September 22nd, 2010

49.3N 60.2W

September 22nd, 2010 Category: Image of the day, Tropical Cyclones

Hurricane Igor (11L) - September 21st, 2010

Convection Associated with 11L

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Track of TS 11L - September 21st, 2010 © Univ. of Wisconsin

Track of TS 11L

At 5:00 PM AST (21:00 UTC) the center of post-tropical cyclone Igor (11L) was located near latitude 49.3 north, longitude 51.7 west. The main image shows some convection on the western side of the storm over Canada.

Igor is moving toward the north-northeast near 39 mph (63 km/hr). A turn toward the north with a decrease in forward speed is expected by Wednesday, followed by a turn toward the northwest by Thursday.

Maximum sustained winds are near 80 mph (130 km/hr) with higher gusts. Little change in strength is expected during the next 24 hours, but the cyclone should begin to gradually weaken by late Wednesday.

Hurricane force winds extend outward up to 85 miles (140 km) from the center, and tropical storm force winds extend outward up to 520 miles (835 km). Estimated minimum central pressure is 950 mb (28.05 inches).

Hurricane Igor resulted in minor damage throughout Bermuda and significant damage in Newfoundland. Current hazards affecting land include wind, rainfall and high surf. Winds of tropical storm force and very near hurricane force, especially in gusts, are occurring in parts of Newfoundland. These winds will likely diminish Tuesday night as Igor moves farther to the north.

The significant rainfall threat over Newfoundland associated with Igor has come to an end. Rainfall will be tapering off this evening as the system moves rapidly north-northeastward.

Large swells along the east coast of the United States will be subsiding tonight. Swells will be slow to subside in Nova Scotia, Newfoundland, Puerto Rico, the Virgin Islands, Hispaniola and portions of the Bahamas during the next couple of days. These swells are likely to cause life-threatening surf and rip currents.

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