63.5°F in Antarctica: Possible Continental Record; 14 Years of Rain in 1 Day in Chile

By: Jeff Masters and Bob Henson, 2:58 PM GMT on March 27, 2015

The warmest temperature ever recorded on the continent of Antarctica may have occurred on Tuesday, March 24, 2015, when the mercury shot up to 63.5°F (17.5°C) at Argentina's Esperanza Base on the northern tip of the Antarctic Peninsula. According to weather records researcher Maximiliano Herrera, the previous hottest temperature recorded in Antarctica was 63.3°F (17.4°C) set just one day previously at Argentina's Marambio Base, on a small islet just off the coas...

Heat Flood

Updated: 4:29 PM GMT on March 28, 2015

Deadly Tornado Pummels Mobile Home Park in Oklahoma

By: Bob Henson, 4:03 PM GMT on March 26, 2015

Two Oklahoma suburbs took the brunt of damage from a rapid-fire severe weather outbreak that developed Wednesday afternoon. At least one person was killed and another critically injured when a tornado and/or accompanying downdraft winds moved across a manufactured home park in Sand Springs, just west of Tulsa. A number of mobile homes were reportedly destroyed in the high winds. Just south of Oklahoma City, the long-suffering town of Moore--struck by catastrophic F5...


Updated: 11:16 PM GMT on March 26, 2015

White House Joins CoCoRaHS; A Belated March Arrival of Severe Weather

By: Bob Henson, 9:29 PM GMT on March 24, 2015

The fine art of weather watching at the nation’s capital, which goes all the way back to Thomas Jefferson, Philadelphia, and the Declaration of Independence, got a shot of adrenaline with the announcement that a CoCoRaHS rain gauge was being installed at 1600 Pennsylvania Avenue in Washington, D.C. The news broke on Monday as part of the fourth annual White House Science Fair.

CoCoRaHS, the Community Collaborative Rain, Hail and Snow network (CoCoRaHS)...

Severe Weather

Updated: 10:10 PM GMT on March 24, 2015

Here’s the Scoop on New NOAA Severe Weather Risk Categories

By: Bob Henson, 4:35 PM GMT on March 23, 2015

Now that spring is upon us, the odds are rising that millions of Americans will find themselves under a “slight,” “moderate,” or even “high” risk of severe weather at some point in the next few months. These terms have been used by NOAA’s Storm Prediction Center (SPC) since 1981 to describe the anticipated likelihood of large hail, damaging winds, and/or tornadoes. From seasoned emergency managers to budding weather geeks, many thousands of Americans f...

Severe Weather

Updated: 4:29 AM GMT on March 24, 2015

U.S. Spring Flood Forecast: No Widespread Major Flooding Expected

By: Jeff Masters and Bob Henson, 4:35 PM GMT on March 20, 2015

No widespread major flooding is expected this spring in the U.S., NOAA said on Thursday in their annual spring flood risk forecast. Rivers in western New York and eastern New England have the greatest risk of spring flooding because of a heavy snowpack of 3 to 9 inches of snow water equivalent, coupled with the potential for heavy spring rain to fall on the snow and cause a sudden melt-water pulse. Significant river ice across northern New York and northern New Engl...


Updated: 8:49 PM GMT on March 20, 2015

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Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.

JeffMasters's Recent Photos

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