Severe Thunderstorms in West Texas; Heavy Rainfall in the Southeast U.S.

Scattered strong to severe storms capable of sporadic large hail and severe winds are expected this afternoon and evening across portions of western Texas. Widespread showers and thunderstorms may produce isolated flash flooding across the Ozarks today and the Southeast into next week. Read More >

Dispersion Index Table

DISPERSION INDEX TABLE

Dispersion Index	Interpretation
>100	Very Good (but may indirectly indicate hazardous conditions.)
60-100	Good (typical burning values)
41-60	Fair to Good (climatological afternoon values for most inland forests.)
21-40	Fair (stagnation if accompanied by persistent low wind speeds.)
13-20	Poor to Fair (stagnation, if persistent; better than average for nighttime.)
7-12	Poor (stagnant, but near average at nighttime.)
1-6	Very Poor (climatological nighttime value for most locations.)