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A PDS tornado watch issued on December 14, 2022. In weather forecasting in the United States, "particularly dangerous situation" (PDS) is the wording used by the National Weather Service to convey special urgency in watch or warning messages for unusually extreme and life-threatening severe weather. It is used in the format "This is a ...
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 ...
Isolated tornadoes are possible but not expected to be the dominant severe weather event, hence these watches are very rarely issued. An expected severe wind event is the mostly likely reason for a PDS severe thunderstorm watch to be issued, with widespread winds greater than 90 mph (150 km/h or 80 knots) possible. These watches are usually ...
Given the environment, the SPC issued a particularly dangerous situation severe thunderstorm watch across much of Kansas, northwestern Oklahoma, and the far northeastern Texas Panhandle. [19] An intense supercell in Custer County, Oklahoma, formed an intense multi-vortex tornado near Custer City, resulting in a tornado emergency. [20]
The outlook included a 45% significant tornado area that was introduced at 1630Z (the first instance of a 45% area being added prior to the 20Z outlook), which is above the minimum threshold for a high risk. It also produced the first known watch (PDS tornado watch 235) with a >95% probability for all severe and significant severe hazards. [274]
In situations where atmospheric conditions will support the production of very destructive straight-line winds and hail from the convective activity, the intensified wording "particularly dangerous situation" (PDS) can be added into the watch product. PDS severe thunderstorm watches usually suggest conditions over the approximate area present a ...
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Tornado Watch issued prior to the 2023 Rolling Fork tornado.. A tornado watch (SAME code: TOA) is a statement issued by weather forecasting agencies to advise the public that atmospheric conditions in a given region may lead to the development of tornadoes within (or near) the region over a period of several hours. [1]