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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.
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.
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.
TONIGHT: Scattered showers and thunderstorms are expected, storms could be severe as we progress through the night with all modes of severe weather being a possibility. Chance of rain: 90%. Low: 64.
A pair of storms are forecast to track through the center of the country this week, bringing downpours and severe weather risks along their path. AccuWeather meteorologists say that the most ...
The weather service says the "window" for the strong storms is from 2 p.m. to 10 p.m. on Thursday. The biggest threat from the storms is "damaging wind gusts, a tornado or two, and large hail ...
Severe thunderstorm warnings are issued by the National Weather Service through the agency's local Weather Forecast Offices, which utilize WarnGen software integrated into the Advance Weather Interactive Processing System to generate the warning statement; it is then disseminated through various communication routes accessed by the media and ...
Following a relative lull in severe weather to end last week and start this one, Tornado Alley could roar back to life beginning later this week, as a severe weather event is expected to unfold ...