Any good anagrams for severe thunderstorm warning?

A severe thunderstorm warning (SAME code: SVR) is an alert issued by national weather forecasting agencies to warn the public that severe thunderstorms are imminent or occurring. The warning is issued when trained storm spotters or Doppler weather radar indicate that a thunderstorm is producing or will soon produce dangerously large hail and high winds, capable of causing significant damage. Flooding is also caused by a thunderstorm's torrential rainfall sometimes (a flood advisory or flash flood warning is issued in these cases). A similar warning is issued by Environment Canada's Meteorological Service of Canada from their offices in Vancouver, Edmonton, Toronto, Montreal and Dartmouth. Skywarn issues the severe thunderstorm warnings for the United Kingdom. In Australia, severe thunderstorm warnings are issued by the Bureau of Meteorology.

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