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PDS tornado warnings are currently issued on an experimental basis by the 38 National Weather Service Weather Forecast Offices within the Central Region. [16] The criteria for a PDS warning are when a tornado on the ground has been spotted or confirmed, or a significant tornado is expected based on radar signatures.
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 ...
A severe thunderstorm watch, like a tornado watch, is not to be confused with a warning. A watch encourages the public to remain vigilant—to be on the watch, so to speak—for the later onset of severe weather. An area under a watch may even experience deceptively fair weather with few clouds before thunderstorms develop.
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 ...
A severe weather warning is more serious than a watch. It signals dangerous weather is happening, is on its way or has a high chance of occurring. It signals dangerous weather is happening, is on ...
A tornado watch is typically less severe than a tornado warning and encompasses a larger area like multiple counties and states. It serves as a signal for people to prepare in case of an emergency.
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.
Dozens of homes were damaged and power lines torn down after a tornado struck a city in the Philippines on Friday morning (June 5). Officials said the powerful storm ravaged portions of the area ...