Published On: Mon, Aug 24th, 2015

Danny weakening as it approaches Leeward Islands; two follow behind

tropical_atlantic3MIAMI, USA -- Tropical cyclone Danny decreased in intensity over the weekend as expected as it approached the Leeward Islands on Sunday. Maximum sustained winds decreased to near 40 mph (65 km/h), with higher gusts. Forecasters are also watching two other tropical systems emerging off the west coast of Africa.

According to the National Hurricane Center in Miami, at 5:00 pm EDT on Sunday, the center of Tropical Storm Danny was located about 165 miles (270 km) east-southeast of Guadeloupe and about 210 miles (340 km) east-southeast of Antigua, moving toward the west at 16 mph (26 km/h).

Tropical storm force winds extend outward up to 60 miles (95 km) from the center.

A westward to west-northwestward motion was expected over the next 48 hours and. On the forecast track, the center will move near or over portions of the Leeward Islands late Sunday night or early Monday, and into the northeastern Caribbean Sea on Monday.

A tropical storm warning is in effect for Antigua, Barbuda, Montserrat, St Kitts, Nevis, and Anguilla.

A tropical storm watch is in effect for Saba and St Eustatius, St Maarten, Puerto Rico, Vieques, Culebra and the US Virgin Islands.

Continued weakening is forecast during the next 48 hours, and Danny is expected to become a tropical depression on Monday.

Tropical storm conditions are expected within portions of the warning area by Sunday night. Tropical storm conditions are possible elsewhere over the Leeward Islands from Guadeloupe northward overnight Sunday.

Danny is expected to produce 2 to 4 inches of rain over the Leeward Islands, the US and British Virgin Islands, and Puerto Rico through Tuesday.

Meanwhile, two other tropical systems are moving off the west coast of Africa.

Satellite data indicate that the circulation associated with a low pressure system located about 800 miles west of the Cape Verde Islands has become better defined since Saturday. Shower and thunderstorm activity associated with this low has also become better organized. Environmental conditions are conducive for additional development, and a tropical depression is likely to form before midweek while the wave moves quickly westward at around 20 mph.

By late this week, atmospheric conditions are expected to become less favorable for tropical cyclone formation. The chances of formation of a tropical cyclone are high (70 percent) through 48 hours and 80 percent during the next five days.

Another tropical wave moving off of the west coast of Africa is accompanied by disorganized showers and thunderstorms. Environmental conditions are expected to be only marginally favorable for development while this disturbance moves generally westward over the tropical Atlantic Ocean at 15 to 20 mph this week.

The chances of formation of a tropical cyclone are low (0 percent) through 48 hours and 20 percent during the next five days

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