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A watch or warning bearing the phrase is referred to as a PDS watch or PDS warning. First used by the Storm Prediction Center (SPC), a national guidance center of the National Weather Service , for tornado watches , the phrase was later applied to other severe weather watches and warnings by the agency's regional forecast offices.
An example of a tornado warning polygon issued by the National Weather Service. A tornado warning (SAME code: TOR) is a public warning that is issued by weather forecasting agencies to an area in the direct path of a tornado, or a severe thunderstorm capable of producing one, and advises individuals in that area to take cover.
April 2018 Great Plains wildfires – Outlook included enhanced warning: "Dangerous, life-threatening fire weather conditions are likely". PDS Red Flag Warning #709 was issued for parts of New Mexico and Texas at 2005Z the day before. [227]
A high-end EF1 tornado uprooted and snapped many trees, downed some power lines, and damaged chicken houses and roofs in the Pelahatchie area. This tornado prompted a PDS warning [15] and caused an indirect injury when a train ran into a downed tree. [5] [12] EF0 W of Vina: Franklin: AL
A severe thunderstorm warning (SAME code: SVR) is a type of public warning for severe weather that is issued by weather forecasting agencies worldwide when one or more severe thunderstorms have been detected by Doppler weather radar, observed by weather spotters, or reported by an emergency management agency, law enforcement, or the general ...
SEL0 URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 260 NWS Storm Prediction Center Norman OK 235 PM CDT Sun May 19 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Western and Central Kansas Northwestern Oklahoma Northeastern Texas Panhandle * Effective this Sunday afternoon and evening from 235 PM until 1000 PM CDT. ...
If a flash flood watch is likely to lead to a major flash flood disaster, then enhanced wording with the words This is a particularly dangerous situation (PDS) can be added to the watch; this is occasionally issued.
The Midwest, including portions of Iowa, was under a “particularly dangerous situation tornado watch” on May 21. The PDS watch is a special label applied to watches by the National Weather ...