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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.

Hurricane Igor (11L) Affecting Bermuda – September 20th, 2010

September 20th, 2010 Category: Image of the day, Tropical Cyclones

Hurricane Igor (11L) - September 19th, 2010

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Track of TS 11L - September 19th, 2010 © Univ. of Wisconsin

Track of TS 11L

As of 11 p.m. AST September 19 (0300 UTC September 20), Hurricane Igor (11L) is located within 30 nautical miles of 32.4°N 65.5°W, about 40 mi (65 km) west of Bermuda. It is currently affecting Bermuda and should continue to do so through Monday.

Maximum sustained winds are 65 knots (75 mph, 120 km/h), with stronger gusts. Minimum central pressure is 955 mbar (hPa; 28.20 InHg), and the system is moving north-northeast at 12 kt (14 mph, 22 km/h).

Igor is an extremely large hurricane and the largest Atlantic hurricane ever recorded in terms of tropical storm-force wind field; hurricane force winds extend up to 90 miles (150 km) from the center of Igor, and tropical storm force winds up to 345 miles (555 km) from the center. In the full image, the convection associated with the huge system appears to stretch from near Newfoundland to near Puerto Rico.

Hurricane Igor (11L) Still at Category Four Strength – September 15th, 2010

23.3N 61.6W

September 15th, 2010 Category: Image of the day, Tropical Cyclones

Hurricane Igor (11L) - September 14th, 2010

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Track of TS 11L - September 14th, 2010 © Univ. of Wisconsin

Track of TS 11L

Hurricane Igor (11L) became a Category 4 hurricane on the afternoon of September 12th, and is continuing its strengthening streak with a well-defined eye.

As of 11 p.m. AST September 14 (0300 UTC September 15), the center of Hurricane Igor was located within 10 nautical miles of 19.0°N 53.9°W, about 605 miles (975 km) east of the northern Leeward Islands and about 1140 miles (1835 km) southeast of Bermuda.

Maximum sustained winds are estimated to be 155 mph (250 km/h), with stronger gusts. Minimum central pressure is estimated at 925 mbar (hPa; 27.32 InHg), and the system is moving west-northwest at 9 mph (15 km/h).

Hurricane force winds extend up to 45 miles (75 km) from the center of Igor, and tropical storm force winds up to 225 miles (360 km) from the center.

Tropical Storm Igor (11L) Gradually Strengthening Over Far East Atlantic Ocean – September 11th, 2010

September 11th, 2010 Category: Tropical Storms

Tropical Storm Igor (11L) - September 10th, 2010

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Track of TS 11L - September 10th, 2010 © Univ. of Wisconsin

Track of TS 11L

At 5:00 PM AST (21:00 UTC), the center of Tropical Storm Igor (11L) was located near latitude 16.7 North, longitude 33.3 West. Igor is moving toward the west near 21 mph (33 km/hr). This general motion, accompanied by a gradual decrease in forward speed, is expected for the next two days.

Maximum sustained winds are near 45 mph (75 km/hr) with higher gusts. Additional strengthening is forecast during the next 48 hours, and Igor is expected to become a hurricane by Sunday. Tropical-storm-force winds extend outward up to 45 miles (75 km) mainly west of the center. Estimated minimum central pressure is 1002 mb (29.59 inches).

Tropical Storm Igor (11L) Continues Moving Slowly Westward

16.0N 24W

September 9th, 2010 Category: Tropical Storms

Tropical Storm Igor (11L) - September 8th, 2010

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Track of TS 11L - September 8th, 2010 © Univ. of Wisconsin

Track of TS 11L

At 11:00 PM AST (03:00 UTC) the center of Tropical Storm Igor was located near latitude 13.8 North, longitude 24.6 West. The main image shows the convection of the western half of the system, while the entire storm can be seen in the animated image.

Igor is moving toward the west near 7 mph (11 km/hr). A turn toward the west-northwest with an increase in forward speed is expected on Thursday.

On the forecast track, the center of Igor is expected to pass south and west of the Cape Verde islands by Thursday evening.

Maximum sustained winds remain near 45 mph (75 km/hr) with higher gusts. Slow strengthening is forecast during the next 48 hours, and Igor could become a hurricane by the weekend. Tropical-storm-force winds extend outward up to 50 miles (85 km) from the center.

Estimated minimum central pressure is 1005 mb (29.68 inches). Hazards currently affecting land are mainly winds – tropical storm conditions are possible in the southern Cape Verde islands through Thursday morning.

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