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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.
Day 4–8 outlooks are the longest-term official SPC Forecast Product, and often change significantly from day to day. This extended forecast for severe weather was an experimental product until March 22, 2007, when the Storm Prediction Center incorporated it as an official product.
Areas to the north and east are under a "slight" risk of severe weather. That's a 2 out of 5 on the Storm Prediction Center's scale. Severe thunderstorm warnings could be issued during the night.
A widespread, deadly, and historic [3] tornado outbreak affected large portions of the Midwestern, Southern and Eastern United States on March 31 and April 1, 2023, the result of an extratropical cyclone that also produced blizzard conditions in the Upper Midwest. The Storm Prediction Center (SPC) issued a rare high risk for severe weather in ...
SPC Severe Weather Outlook for today has been updated and the slight risk of severe thunderstorms now covers the northern part of the local area. Expected weather hazards are damaging winds and ...
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 ...
As the days passed, and computer weather prediction models identified multiple thunderstorm-enhancing elements over the area, confidence grew in the probability of a severe weather outbreak occurring. On November 27, the SPC issued a Day 3 level 3/enhanced risk for the area, extending all the way through eastern Arkansas, and into western ...
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