Weather Bomb phenomena (Storm Barra)

Grey Havoc

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Storm Barra, described as a "weather bomb", moved in from the west on Tuesday and is set to sweep the country once more on Wednesday before departing for the North Sea.

Forecasters have said Storm Barra may be a "weather bomb", an unofficial phenomenon when the central pressure in a low pressure system falls 24 millibars in 24 hours, known as explosive cyclogenesis.
 
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publiusr

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I assisted the late storm chase legend Matt Biddle on tornado surveys in Metro Birmingham in '98 and '11. Stormtrack.org and The Tornado Project's Tom Grazulis are good resources- as is americanwx.com and alabamawx.com where James Spann hosts weatherbrains.
 

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