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, 2:32 PM GMT on July 09, 2014
Tropical Storm Neoguri continues its steady weakening trend as it closes in on the large southern Japanese island of Kyushu. Landfall of the center is expected to occur near 6 am local time on Thursday (Wednesday night in the U.S.) Once a mighty super typhoon with 155 mph winds, Neoguri has now weakened to a tropical storm with 70 mph winds as of 11 am EDT on Wednesday. Satellite images Wednesday morning showed a continued deterioration of Neoguri's heavy thundersto...
Updated: 9:05 PM GMT on July 09, 2014
By: Dr. Jeff Masters, 3:37 PM GMT on July 08, 2014
The outer spiral bands of Typhoon Neoguri are lashing the large southern Japanese island of Kyushu as the storm heads north at 15 mph towards Japan. Despite seemingly favorable conditions for intensification on Monday and Tuesday morning, with low wind shear, very warm sea surface temperatures of 30 - 31°C, very warm waters extending to great depth, good upper-level outflow, and only modest amounts of dry air, Neoguri mysteriously weakened from a 155 mph super typh...
Updated: 8:20 PM GMT on July 08, 2014
By: Dr. Jeff Masters, 4:01 PM GMT on July 07, 2014
The outer spiral bands of Super Typhoon Neoguri are pounding the Japanese Ryukyu Islands, which include Okinawa, as the mighty storm heads north-northwest at 12 mph towards Japan. At 11:30 pm local time (13:30 UTC) Monday, Naha City in southern Okinawa was reporting heavy rain and wind gusts of 43 mph. At 8 pm local time Monday, Miyako-jima reported sustained winds of 33 mph, gusting to 53 mph. On Sunday, Neoguri strengthened to 155 mph winds, crossing the 150 mph t...
Updated: 4:38 PM GMT on July 07, 2014
By: Dr. Jeff Masters, 4:51 PM GMT on July 06, 2014
In the Western Pacific, Typhoon Neoguri has strengthened into a dangerous Category 4 storm with 140 mph winds this Sunday morning, and is headed west-northwest at 12 mph towards a Tuesday brush with Okinawa in Japan's Ryukyu island chain. Satellite images show a huge and well-organized system, with a prominent eye, and very intense eyewall thunderstorms with cold cloud tops. WInd shear is light, 5 - 10 knots, sea surface temperatures are a very warm 30 - 31°C, and ...
By: Dr. Jeff Masters, 3:23 PM GMT on July 05, 2014
Hurricane Arthur is no more. Its circulation has been absorbed by a trough of low pressure over the Canadian Maritime provinces after Arthur made landfall in Nova Scotia on Saturday morning near 10 am EDT as a tropical storm with 65 mph winds. On Friday night, Arthur skirted Nantucket and Cape Cod, Massachusetts, bringing a swath of 3 - 5" of rain across Southeast Massachusetts and Eastern Maine. Top winds at Nantucket were 50 mph, gusting to 59 mph, at 9:53 pm EDT....
Updated: 4:16 PM GMT on July 05, 2014