Published on: April 13, 2009 at 10:08 PM

Skywatcher John Talbot just correctly noted that the storms tonight are doing the opposite of what I write on the blog.

I said they would weaken, but some are still growing tonight.

It shows the power of cold air aloft. The colder air associated with the strong upper trough is driving instabilities that are powering tonight’s storms.

A new warning: severe thunderstorm warning until 10:45 p.m. for Greene and Sumter Counties. Intense storms from Geiger to Emelle to northwest of York. Some pretty big hail showing on radar just across the Mississippi border southwest of Emelle.

Some heavy rain, but no lightning in the Jasper area, as well as to the southwest near Berry.

Seeing some redevelopment near the Mississippi/Alabama line east of Columbus. This will affect Lamar, Pickens and Fayette Counties, and perhaps Marion County.

Still have a severe thunderstorm warning for Morgan County and another for northern Jackson County.

The good news is that the activity is just about over in Mississippi. There are still some storms near Meridian that will move into West Central Alabama’s Choctaw and Sumter Counties soon.