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, 7:58 PM GMT on August 19, 2014
A tropical wave located in the Central Atlantic near 10°N 50.5°W, about 800 miles east of the Lesser Antilles Islands, was designated Invest 96L by NHC on Tuesday afternoon, and is headed westwards to west-northwestwards at about 10 - 15 mph. Satellite loops show the wave has a broad, elongated surface circulation and modest amount of heavy thunderstorm activity that is poorly organized. Thunderstorm activity was beginning to increase slightly in areal coverage ea...
Updated: 8:25 PM GMT on August 19, 2014
By: Dr. Jeff Masters, 3:25 PM GMT on August 19, 2014
A tropical wave located in the Central Atlantic near 11°N 48°W, about 1,000 miles east of the Lesser Antilles Islands, is headed westwards at about 10 mph. Satellite loops show the wave has a broad, elongated surface circulation and a small amount of heavy thunderstorm activity that is poorly organized. Wind shear is moderate, 10 - 20 knots, and water vapor satellite images and the Saharan Air Layer analysis show that the wave is surrounded by dry air, though the ...
Updated: 3:26 PM GMT on August 19, 2014
By: Dr. Jeff Masters, 4:53 PM GMT on August 18, 2014
July 2014 was Earth's fourth warmest July since records began in 1880, said NOAA's National Climatic Data Center (NCDC) today. NASA rated July 2014 cooler: the 11th warmest July on record. The July ranking by NOAA broke a streak of two consecutive warmest months on record--May and June of 2014 (they originally ranked April 2014 as tied for warmest April on record, but have since revised it to the second warmest April on record.) Global ocean temperatures during July...
Updated: 6:14 PM GMT on August 18, 2014
By: Dr. Jeff Masters, 4:30 PM GMT on August 17, 2014
From the beginning of tornado disaster movie, "Into the Storm", we are treated to the most magnificent special effects that Hollywood can create. In the eighteen years since the infamous "Twister" of 1996, computer graphics technology has progressed remarkably. The spinning fire tornado and jetliners hurtling through the air in "Into the Storm" make the flying cows and clumsily rendered tornadoes of Twister seem quaint. Unfortunately, as is the case in nearly all di...
By: Dr. Jeff Masters, 3:40 PM GMT on August 16, 2014
A tropical wave (Invest 95L) that moved off the coast of Africa on Friday was between the Cape Verde Islands and Africa on Saturday morning, but is headed west-northwest into drier air. Satellite loops show the wave has a closed surface circulation, but heavy thunderstorm activity is lacking due to high wind shear of 25 knots and dry air. Water vapor satellite images and the Saharan Air Layer analysis show that 95L is entering a dry airmass. Sea Surface Temperatures...
Updated: 1:56 AM GMT on August 17, 2014