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

By: Dr. Jeff Masters, 1:47 PM GMT on July 31, 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, 2:47 PM GMT on July 30, 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: 3:36 PM GMT on July 30, 2014

93L in Middle Atlantic Close to Tropical Depression Status

By: Dr. Jeff Masters, 2:22 PM GMT on July 29, 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: 2:32 PM GMT on July 29, 2014

93L in Eastern Atlantic Growing More Organized

By: Dr. Jeff Masters, 2:43 PM GMT on July 28, 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: 3:40 PM GMT on July 28, 2014

Disturbance off the Coast of Africa a Potential Threat to the Lesser Antilles

By: Dr. Jeff Masters, 5:57 PM GMT on July 27, 2014

An area of disturbed weather near 11°N, 31°W, about 500 miles southwest of the Cape Verde Islands, has the potential to develop into a tropical depression later this week as it heads west at 10 - 15 mph towards the Lesser Antilles Islands. Visible satellite loops on Sunday morning showed that the disturbance had only a minor amount of spin. Infrared satellite images showed that the system's heavy thunderstorm activity was modest at best, and had not changed signif...

Hurricane

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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.