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A watch or warning bearing the phrase is referred to as a PDS watch or PDS warning as shorthand jargon. It was first used by the Storm Prediction Center (SPC), a national guidance center of the National Weather Service , for tornado watches and eventually expanded to use for other severe weather watches and warnings by the agency's regional ...
PDS is a label used in situations when “there’s an expectation of particularly violent tornadoes possible,” said Andy Ervin with the National Weather Service's office in the Quad Cities.
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.
The PDS wording can be incorporated into the text of a tornado warning, either upon its initial issuance or in a "severe weather statement" providing updated information on the storm, when a considerable tornado debris signature is detected on radar or a large tornado is visually observed.
A tornado warning means "take action now" as a tornado has been sighted or is indicated by weather radar. There is imminent danger to life and property. Move to an interior room on the lowest ...
A severe thunderstorm watch has been issued over the Southwest Ohio region until 4 p.m., and a tornado warning has been issued in parts of Kentucky.
It is recommended that people in the path of a large and violent tornado, whether referenced in a tornado warning or a tornado emergency, seek shelter in a basement, cellar or safe room, as stronger tornadoes (particularly those significant enough to warrant the inclusion of a tornado emergency declaration within a tornado warning) pose a ...
A tornado warning means a tornado has been sighted or is indicated by weather radar. According to the National Weather Service, a tornado warning means there’s imminent danger to life and ...