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Although a tornado warning is generally a higher alert level than a tornado watch, in the U.S., it can be surpassed by a higher-level alert—structured as wording that can be added to the official warning product—to warn the public of intense tornadoes affecting a densely populated area.
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.
Some NWS forecast offices, such as the one serving the Des Moines, Iowa, metropolitan area, have created standardized criteria and purpose for the usages of the heightened wording. Because data about the tornado and its exact path are often ascertained after the initial tornado warning is issued, this designation is usually added to the Severe ...
The "particularly dangerous situation" wording is used in "rare situations when long-lived, strong and violent tornadoes are possible," the weather service said. "Numerous" tornadoes are expected ...
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.
While the intention of this experimental warning may be to replace the loosely defined tornado emergency, PDS tornado warnings are structured as the second highest level of tornado warning within the impact based warning system (an experiment – which also includes tags within warning products illustrating radar indications or physical ...
According to the National Weather Service, a tornado warning means there’s imminent danger to life and property in the warning area, and you should immediately move to an interior room on the ...