Tropical Storm Bertha Nearing Lesser Antilles Islands

By: Dr. Jeff Masters, 13:28 GMT le 01 août 2014

Tropical Storm Warnings are flying Friday morning in most of the Lesser Antilles Islands as Tropical Storm Bertha, with top winds of 45 mph, cruises west-northwest at 20 mph towards the islands. Bertha was born last night at 03 UTC August 1, when tropical disturbance 93L was finally able to produce enough heavy thunderstorms to be classified as a tropical storm. The formation of Bertha on August 1 was right on schedule, according to climatology from 1966 - 2009: the...

Hurricane

93L Fighting Dry Air, But Could be a Tropical Depression

By: Dr. Jeff Masters, 13:47 GMT le 31 juillet 2014

An area of disturbed weather located near 11°N, 52°W at 8 am EDT Thursday, about 650 miles east of the Lesser Antilles Islands (93L), has maintained a well-organized surface circulation and has now developed enough heavy thunderstorms to potentially be classified as a tropical depression later today. Visible satellite loops on Thursday morning showed that the surface circulation of 93L was exposed to view, with a modest clump of heavy thunderstorms on the south si...

Hurricane

Little Change to 93L

By: Dr. Jeff Masters, 14:47 GMT le 30 juillet 2014

An area of disturbed weather located near 9°N, 45°W at 8 am EDT Wednesday, about 1150 miles east of the Lesser Antilles Islands (93L), has the potential to develop into a tropical depression by Thursday, but is struggling with high wind shear today. Visible satellite loops on Wednesday morning showed 93L had a well-defined surface circulation and some low-level spiral bands. However, infrared satellite images showed heavy thunderstorm activity was very limited, an...

Hurricane

Updated: 15:36 GMT le 30 juillet 2014

93L in Middle Atlantic Close to Tropical Depression Status

By: Dr. Jeff Masters, 14:22 GMT le 29 juillet 2014

An area of disturbed weather located near 10°N, 39°W at 8 am EDT Tuesday, about 1600 miles east of the Lesser Antilles Islands, (93L), has the potential to develop into a tropical depression by Wednesday, but is struggling with high wind shear today. Visible satellite loops on Tuesday morning showed improved organization to 93L with more spin and some low-level spiral bands beginning to form. A 7:30 am EDT July 29 pass from the ASCAT satellite showed plenty of wes...

Hurricane

Updated: 14:32 GMT le 29 juillet 2014

93L in Eastern Atlantic Growing More Organized

By: Dr. Jeff Masters, 14:43 GMT le 28 juillet 2014

An area of disturbed weather located near 10°N, 33°W at 8 am EDT Monday, about 500 miles southwest of the Cape Verde Islands, was designated Invest 93L by NHC early Monday morning. This disturbance is a more serious threat than Tropical Depression Two of last week, and has the potential to develop into a strong tropical storm before reaching the Lesser Antilles Islands on Friday or Saturday. Visible satellite loops on Monday morning showed that the disturbance had...

Hurricane

Updated: 15:40 GMT le 28 juillet 2014

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About

Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.

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