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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 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.
A significant severe weather event impacted the South Central United States between October 20–22, 2019. Forecasters first identified the threat on October 16 as a large upper-level trough was expected to combine with an unstable atmosphere across Texas, Oklahoma, and Arkansas particularly. On the evening of October 20, discrete supercell ...
3-Day Storm Outlook This map shows the 3-day weather outlook for storms by the National Weather Service's Storm Prediction Center. Sources: National Weather Service, Esri.
An intense low-pressure system produced widespread impacts across the United States in early March 2023. Additionally, an outbreak of 35 tornadoes affected 12 states from the Southern United States to the Great Lakes. In all, the storm system killed 13 people due to flooding and strong winds. At least 17 other people were injured.
Severe thunderstorms roll into Dallas-Fort Worth Thursday afternoon with chances of large hail, damaging winds, and tornadoes possible, according to the National Weather Service Fort Worth office ...
High risk convective outlook issued by the Storm Prediction center at 13:00 UTC on 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, [10] and by May 1, a 15% risk was added across Nebraska, Kansas, Oklahoma, and northern Texas. [11]
This is a list of meso-gamma mesoscale discussions, which are issued by the National Oceanic and Atmospheric Administration’s Storm Prediction Center for small-scale analysis of mesoscale features, typically during high-confidence and high-impact severe weather events.