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The NWS has the option of adding enhanced wording to severe thunderstorm warnings and update statements issued as a Severe Weather Statement (SVS)—"particularly dangerous situation" (PDS), "severe thunderstorm emergency", or, as used by some Central and Southern Region offices as indicative PDS wording, "this is a very dangerous storm"—when ...
Severe Weather Statements may include notices of cancellation (if the warning is being discontinued entirely, or if sections of counties or county-equivalent jurisdictions are being removed from the continuing warning), or notices of a warning being allowed to expire because the prompting storm has weakened below severe criteria.
The PDS red flag warning below was issued by the National Weather Service in Reno, Nevada, on December 19, 2017. [7] On August 3, 2018, the National Weather Service in Reno, Nevada, issued another PDS red flag warning to communicate the threat of life-threatening fire danger due to strong gusty winds and low humidity.
The National Weather Service defines severe thunderstorms as having winds of 58 miles per hour or higher, and/or hail that is at least one inch in diameter. What does a severe thunderstorm warning ...
When severe weather looms, storm alerts are important tools for keeping people informed. The National Weather Service shares alerts as it warns of potential risks from thunderstorms, flooding ...
In the United States, severe thunderstorm watches are issued by the Storm Prediction Center (SPC), a national guidance center of the National Weather Service (NWS) branch of the National Oceanic and Atmospheric Administration (NOAA), [4] [5] for areas of the lower 48 states where atmospheric conditions favor the development of convective thunderstorm activity reaching severe criteria.
UPDATE: Severe Thunderstorm Warning in effect until 4:15 p.m.At 3:31, severe thunderstorms were located along a line extending from near Stuarts Draft to near Cornwall, moving southeast at 65 mph.
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.