Dr. Masters co-founded wunderground in 1995. He flew with the NOAA Hurricane Hunters from 1986-1990. Co-blogging with him: Bob Henson, @bhensonweather
By: Dr. Jeff Masters, 3:52 PM GMT on July 01, 2015
Unprecedented June heat scorched portions of four continents during the past week, and many all-time heat records are likely to fall across multiple continents this July as the peak heat of summer arrives for what has been the hottest year in recorded human history. Already on July 1, in Wimbledon, England--site of the classic Wimbledon tennis tournament--players are enduring the city's hottest day in tournament history. The mercury hit 96.3°F (35.7°C) at Kew Gard...
Updated: 11:24 PM GMT on July 01, 2015
By: Jeff Masters, 3:21 PM GMT on June 30, 2015
The tropics are quiet in the Atlantic Ocean, where no tropical storm activity is likely for at least the next week. A moderate-strength El Niño event is underway in the Eastern Pacific, and the atmospheric circulation associated with the strong warming of the waters off the coast of Peru is creating strong upper-level winds over the Caribbean. These powerful winds were creating a very high 60 - 70 knots of wind shear over the Caribbean and Southern Gulf of Mexico o...
By: Jeff Masters, 2:30 PM GMT on June 29, 2015
A searing heat wave unprecedented for June scorched the Northwest U.S. and Western Canada on Saturday and Sunday. Temperatures soared to their highest June levels in recorded history for portions of Washington, Idaho, Montana, and British Columbia; both Idaho and Washington set all-time high temperature records for the month of June on Sunday. According to wunderground's weather historian, Christopher C. Burt, the 113°F measured in Walla Walla, Washington beat that...
Updated: 7:55 PM GMT on June 29, 2015
By: Bob Henson, 8:17 PM GMT on June 26, 2015
In most parts of the country, summer thunderstorms are most common in the afternoon or evening. Things are a bit different from the eastern Great Plains into the western Great Lakes. Across this core swath of the Midwest, lightning is most likely to zigzag across the summer sky during the wee hours of the morning. Along with disrupting countless nights of sleep, these middle-of-the-night thunderstorms are renowned for torrential rain, large hail, and destructive win...
By: Bob Henson, 3:15 PM GMT on June 25, 2015
The atmosphere over North America will slide back into a familiar pattern this weekend, as a powerful upper ridge and record heat take hold of the Pacific Northwest and western Canada while an unusually strong upper low for late June brings wet, cool conditions from the Ohio Valley through the mid-Atlantic into New England. It’s yet another variation on the warm-west/cool-east pattern that predominated through much of 2014 and early 2015.
Updated: 4:51 PM GMT on June 25, 2015