Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.
By: Dr. Jeff Masters, 8:19 PM GMT on August 01, 2014
The center of Tropical Storm Bertha was passing between the Lesser Antilles islands of Martinique and Dominica near 4 pm EDT on Friday, but has brought little in the way of strong winds or heavy rain to the Lesser Antilles Islands so far. As of 4 pm, Martinique had received 0.35" of rain, with top winds of 22 mph. Dominica had a wind gust of 43 mph at 4 pm EDT, and had picked up 0.08" of rain. The storm's top winds of 50 mph were located about 100 - 150 miles east-n...
By: Dr. Jeff Masters, 1:28 PM GMT on August 01, 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...
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...
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...
Updated: 3:36 PM GMT on July 30, 2014
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...
Updated: 2:32 PM GMT on July 29, 2014