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This is a list of meso-gamma mesoscale discussions, which are issued by the National Oceanic and Atmospheric Administration’s Storm Prediction Center during high-confidence and high-impact severe weather events.
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 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.
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 ...
Here are the top 10 deadliest tornadoes to strike in the United States, according to the Storm Prediction Center. On March 18, 1925, the deadliest tornado in U.S. history, the Tri-State Tornado of ...
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.
Part of the tornado outbreak of April 8–9, 2015. Throughout the evening hours of April 9, 2015, an extremely violent and long-lived multiple-vortex tornado tore through the communities near Rochelle and in Fairdale, Illinois. Part of a larger severe weather event that impacted the Central United States, the tornado first touched down in Lee ...
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 ...