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The Storm Prediction Center issues convective outlooks (AC), consisting of categorical and probabilistic forecasts describing the general threat of severe convective storms over the contiguous United States for the next six to 192 hours (Day 1 through Day 8). These outlooks are labeled and issued by day, and are issued up to five times per day.
A high risk severe weather event is the greatest threat level issued by the Storm Prediction Center (SPC) for convective weather events in the United States. On the scale from one to five, a high risk is a level five; thus, high risks are issued only when forecasters at the SPC are confident of a major severe weather outbreak.
The Storm Prediction Center issues daily outlooks denoting the risk for severe weather and wildfires for specific regions in the United States. For severe weather, which includes the risk for thunderstorms, tornadoes, hail, and straight-line winds, there are five risk levels indicating the probability for these hazards: marginal, slight, enhanced, moderate, and high.
Tornadoes, some stronger than EF2, as well as strong wind gusts and hail as large as tennis balls are the main threats across the Midwest Tuesday, the Storm Prediction Center said.
Large hail will be probable, according to the Storm Prediction Center. Through early next week, the Central US faces an increasing threat of severe weather and excessive rainfall, according to the ...
A high risk of severe weather is a level 5 on the Storm Prediction Center's 0-5 scale. Monday is the first time in over a year the Storm Prediction Center has issued a high risk warning for severe ...
Progression of a well-anticipated extremely critical event across the Central Plains on March 6, 2017. This event produced wildfires that burned 1,200,000 acres of land, and killed seven people. An extremely critical fire weather event is the greatest threat level issued by the NWS Storm Prediction Center (SPC) for wildfire events in the United ...
Those areas are under a Level 2 out of 5 risk, according to the Storm Prediction Center. “Isolated to scattered severe thunderstorms appear possible Friday across parts of the Southeast.