Heavy Rain is Likely Across the Mid-Atlantic States Today Along With Potentially Damaging Wind Gusts; Critical Fire Weather in the Great Basin

Scattered strong to severe thunderstorms are expected today across the Mid-Atlantic and forecast to contain heavy to excessive rainfall. Numerous instances of flash flooding are possible in southern Virginia and north-central North Carolina. Severe thunderstorms are also possible across the northern Great Plains today. Elevated to Critical Fire Weather located across the Intermountain West. Read More >

Automatically generated image showing areas of convective available potential energy.


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CAPE

This is a surface based Convective Available Potential Energy (CAPE) measurement only. In the cool season, elevated instability may be much higher than surface based cape.

On average, CAPE of 1000 J/Kg is usually sufficient for strong to severe storms. CAPE of 3,000 to 4,000 J/Kg or higher is usually a signal of a very volatile atmosphere that could produce severe storms if other environmental parameters are in place.

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Heavy Rain is Likely Across the Mid-Atlantic States Today Along With Potentially Damaging Wind Gusts; Critical Fire Weather in the Great Basin

Convective Parameters - Cape