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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 ...
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]
A rare Particularly Dangerous Situation Tornado Watch was issued Saturday afternoon for east Texas, southeast Arkansas, much of Louisiana, and western Mississippi. This was followed by numerous ...
A tornado outbreak threatened parts of the South on Saturday, prompting forecasters to issue a rare "particularly dangerous situation" alert amid severe storms that have killed at least one person ...
The SPC (then the National Severe Storms Forecast Center) conceived the PDS verbiage for use in tornado watches in 1981; it was applied to a public tornado watch product for the first time—encompassing portions of northern Texas and southern Oklahoma—during the outbreak of April 2, 1982.
The weather service's Storm Prediction Center — whose mission is to provide "forecasts and watches for severe thunderstorms and tornadoes” — says that the term was first used on April 2, 1982 by forecaster Robert H. Johns, in conjunction with a tornado watch.
Particularly dangerous situation tornado watch TOA – Conditions are favorable for the development of severe thunderstorms capable of producing destructive tornadoes in and close to the watch area. These watches are occasionally issued, and usually mean that a major tornado outbreak is possible, where the potential for multiple strong to ...