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History The Storm Prediction Center began in 1952 as SELS (Se vere L ocal S torms Unit), the U.S. Weather Bureau in Washington, D.C. In 1954, the unit moved its forecast operations to Kansas City, Missouri. SELS began issuing convective outlooks for predicted thunderstorm activity in 1955, and began issuing radar summaries in three-hour intervals in 1960; with the increased duties of compiling ...
As of Thursday morning, there have been 670 preliminary tornado reports across the United States, well above the historical average of 559 through May 8, according to the Storm Prediction Center.
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.
On March 4, the Storm Prediction Center (SPC) issued a slight risk outlook for severe weather for a negatively tilted shortwave trough positioned over the High Plains. The outlook included the possibility of strong winds, large hail, and a 5 percent chance for tornadoes, mostly throughout southern Iowa. The next day, the SPC upped their alert ...
• More than 200 storm reports: There were 244 storm reports Monday, including 17 tornado reports, according to the Storm Prediction Center. Hail the size of softballs slammed down in Kansas ...
The total number of storm reports listed by the SPC Monday ranked as the second-highest day so far this year, falling only behind March 31 when the tally was 704 severe weather reports.
Meteorological synopsis NWS Tornado outlooks from June 14–19 overlaid. On June 12, the Storm Prediction Center (SPC) issued a level 3/enhanced risk of severe weather for June 14 across the Mid-South and eastern Gulf Coast states, and also highlighted the threat for significant severe weather across the risk area.
The Storm Prediction Center (SPC) had reiterated the powerful language from the NWS, warning that a "strong tornado" with a rating of EF2 or EF3 was on the ground and urged residents to seek shelter.