Tropical Storm Bill forms as Ana threatens

| August 15, 2009

James Wilson, Lead Meteorologist, The Weather Channel
Aug. 15, 2009 5:50 pm ET

ATLANTIC

Atlantic Basin has become quite active:

Tropical Storm Ana with top winds of 40 mph and is located 805 miles east-southeast of the Leeward Islands. This is the first named storm of the 2009 Atlantic Hurricane Season.

The Government of the Netherland Antilles has issued Tropical Storm Watches for St. Maarten, Saba, and St. Eustatius. This means tropical storm conditions are possible in the watch area within 36 hours.

Ana is forecast to slowly strengthen as it heads toward the Leeward Islands, Puerto Rico and then toward Hispaniola, Cuba, and possibly south Florida. All these areas need to monitor the progress of Tropical Storms Ana

Tropical Storm Bill the 2nd named storm of the Atlantic Hurricane Season has formed in the east-central Atlantic east of Tropical Storm Ana or about 820 miles west-southwest of the Cape Verde Islands.

Tropical Storm Bill at top winds of 40 mph is forecast to move westward over the open tropical Atlantic over the next few days, steadily gaining strength and becoming a hurricane by Wednesday into Thursday as it also heads toward the Leeward Islands and Puerto Rico.

Bill is forecast to be the much stronger tropical system so all in the Leeward Islands to Puerto Rico and then Southeast United States will want to monitor and check back frequently on the latest on Bill.

In the western Atlantic, a tropical wave and associated surge of tropical moisture continues to move past Hispaniola and the Bahamas, across Cuba to the Florida Keys and southwest Florida. Expect breezy conditions along with heavy rain and thunderstorms as this tropical wave moves into the eastern Gulf of Mexico.

The upper winds and surface pressure don't show any immediate development but very heavy rain and squally storms will follow this system through the eastern to northeastern Gulf of Mexico into Monday

A new strong tropical wave and disturbance is coming off the Coast of Africa with very concentrated thunderstorms and showers. This area will need to be monitored for possible development the next few days behind Tropical Storm Bill.

EASTERN PACIFIC

Guillermo rapidly strengthened overnight and became a Category 3 hurricane with winds of 125 mph near the center of circulation. Guillermo has now weakened some back to a Category 2 with 110 mph top winds.

It is located 1605 miles west of Cabo San Lucas, Mexico, while continuing to move west-northwest.

Environmental conditions are forecast to become less favorable this weekend, and therefore it should soon begin a weakening trend.

Guillermo is not expected to threaten any land.

A couple hundred miles west-southwest of Guillermo, the remnant low pressure from Tropical Depression 9E is still being watched for regeneration.
 

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