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Posts tagged Leeward Islands

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.

Remnant Low of TS Gaston (09L) Could Become New Tropical Storm

17.3N 56.1W

September 6th, 2010 Category: Tropical Storms

Remnant Low of Tropical Storm Gaston (09L) - September 5th, 2010

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Shower and thunderstorm activity has become better organized in association with the remnant low of Tropical Storm Gaston (09L), located about 700 miles east of the Leeward Islands.

Environmental conditions appear conducive for tropical cyclone formation, and the low could redevelop into a tropical depression at any time today as it moves westward near 15 mph.

There is a high chance (80 percent) of this system becoming a tropical cyclone again during the next 48 hours.

Interests in the leeward islands should monitor the progress of this system.  Warnings will likely be required for some of these islands if advisories are re-initiated.

Tropical Storm Fiona Moving Over Open Atlantic

22.0N 70W

September 2nd, 2010 Category: Tropical Storms

Tropical Storm Fiona (08L) - September 1st, 2010

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Track of TS 08L - September 1st, 2010 © Univ. of Wisconsin

Track of TS 08L

At 5:00 PM AST (21:00 UTC), the center of Tropical Storm Fiona was located near latitude 20.2 North, longitude 62.9 West. Fiona is moving toward the northwest near 20 mph (32 km/hr). The cyclone should continue moving in this direction at a slower forward speed during the next two days. In the full animated image, Hurricane Earl (07L) can be seen in the upper left corner.

Maximum sustained winds are near 60 mph (95 km/hr) with higher gusts. Little change in strength is forecast during the next 48 hours. Tropical storm force winds extend outward up to 140 miles (220 km) from the center. Estimated minimum central pressure is 997 mb (29.44 inches).

Hazards affecting land are mainly rainfall: Fiona is expected to produce rainfall accumulations of 1 to 3 inches, with isolated maximum amounts of 5 inches, over portions of the northern Leeward Islands.

Tropical Storm Earl (07L) Continues Westward, Strengthens Slightly

12.9N 52.5W

August 28th, 2010 Category: Tropical Storms

Tropical Storm Earl (07L) - August 27th, 2010

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Track of TS 07L - August 27th, 2010 © Univ. of Wisconsin

Track of TS 07L

On August 23, a low pressure system moved off the East coast of Africa. Following Hurricane Danielle (06L)‘s path, it moved westward and rapidly organized. As it neared the Cape Verde Islands, the NHC stated there was a 90% chance of organization (click here for previous article).

Two days later on August 25, Tropical Depression 7 formed East of Hurricane Danielle. Later that day it was upgraded to Tropical Storm Earl. Unlike its predecessor, it is expected to follow a more southerly track.

After strengthening to a tropical storm, Earl maintained a minimum pressure of 1003 mbar and winds of 45 mph for nearly two days.

Recent reports place the center of Tropical Storm Earl near 16.0°N 47.9°W, about 1015 miles (1635 km) east of the northern Leeward Islands. Maximum sustained winds are estimated at 50 mph (85 km/h), with higher gusts. The minimum central pressure is estimated to be 1002 mbar (hPa; 29.59 inHg) and the storm is moving west at 20 mph (32 km/h).

A tropical storm watch is in effect for French Saint Martin and Saint Barthelemy, meaning that tropical storm conditions are possible within the watch area within 72 hours. Residents in the remainder of the northern Leeward Islands should monitor the progress of Earl, as watches may be required for portions of these islands later today.

Danielle (06L) Upgraded to Category One Hurricane

15.0N 51.2W

August 25th, 2010 Category: Tropical Cyclones

Tropical Storm Danielle (06L) - August 24th, 2010

Tropical Storm Danielle (06L) - August 24th, 2010

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Track of TS 06L - August 24th, 2010 © Univ. of Wisconsin

Track of TS 06L

Tropical Storm Danielle (06L) has been upgraded to a hurricane once again. The system is located about 795 mi (1275 km) east of the Leeward Islands. It is moving toward the west-northwest near 18 mph (30 km/hr), but is expected to slow down and turn toward the northwest during the next couple of days.

Maximum sustained winds have increased to near 75 mph (120 km/hr) with higher gusts. Danielle is thus a category one hurricane on the Saffir-Simpson hurricane wind scale. Little change in strength is expected tomorrow, with some strengthening possible by Thursday.

Hurricane force winds extend outward up to 30 miles (45 km) from the center and tropical storm force winds extend outward up to 140 miles (220 km). The estimated minimum central pressure is 990 mb (29.23 inches).