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These watches are occasionally issued, and usually mean that a major tornado outbreak is possible, where the potential for multiple strong to violent (EF4 and EF5) tornadoes exists. Usually only reserved for forecast "high-end" severe weather events, this type of watch is usually valid for a longer period of time and issued for a larger area by ...
In Canada, a severe thunderstorm is defined as having wind gusts of greater than 90 km/h (56 mph), hail with a diameter of greater than two centimetres (0.79 in), rainfall rates of greater than 50 millimetres (2.0 in) in one hour or greater than 75 millimetres (3.0 in) in three hours, or tornadoes. [14]
What does a tornado watch mean? According to the National Weather Service, a tornado watch is issued by the Storm Prediction Center as a warning in counties where tornadoes could occur.
Tornadoes are possible in and near the watch area. Review and discuss your emergency plans and check supplies and your safe room. Be ready to act quickly if a warning is issued or you suspect a ...
A watch must not be confused with a tornado warning, and encourages the public to remain vigilant for the onset of severe weather, including possible tornadoes. A tornado watch does not mean a tornado has been observed or will occur, just that favorable conditions increase the likelihood of such storms happening, and may be issued several hours ...
The Storm Prediction Center, jointly run by the National Oceanic and Atmospheric Administration and NWS, issues tornado watches. Tornado warnings are issued by your local NWS forecast office.
Given the National Weather Service has warned the storms’ strongest impact could still be on its way, arriving between 2 and 10 p.m. Tuesday, authorities are urging people to stay weather aware.
PDS tornado watches are issued when there is a significantly higher than normal risk of multiple EF2 or stronger tornadoes – especially those that are predicted to be long-track in nature, with path lengths of more than 20 miles – in the watch area (usually amounting to damage consistent with EF4 or EF5 tornadoes at maximum), in addition to ...
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