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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.
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.
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.
What is Tuesday's severe weather outlook in Des Moines? The moderate risk has been expanded into much of the state for today. All forms of severe weather are likely. Have multiple ways to receive ...
The most likely types of severe weather are damaging wind gusts (some reaching 75 mph or more) and large hail that could be 2 inches in diameter. Forecasters at the National Weather Service said ...
Severe weather season is about to shift into high gear as a volatile weather pattern fuels repeated rounds of damaging thunderstorms and tornadoes across more than a dozen states through May ...
High risk convective outlook issued by the Storm Prediction center at 13:00 UTC on May 6 May 6. Starting April 30, the Storm Prediction Center noted that certain models, including the ECMWF, forecasted a multi-day period of high instability and supportive wind shear across the Southern and Central Plains, and by May 1, a 15% risk was added across Nebraska, Kansas, Oklahoma, and northern Texas.
Severe storms and heavy rains are expected to impact parts of the South following weeks of inclement weather that killed over two dozen people across the region.