The airmass across Central Alabama has changed radically today. Dewpoints that were in the 40s last night and 50s today have risen into the 60s.
A few light showers wer progressing eastward across East Alabama. They are the remnants of a line of storms that moved across Mississippi today, but weakened as it moved into the drier air across Central Alabama. The strongest storms remained over Southwest Alabama, from Sumter County wouthward.
The storms today were caused by an upper level disturbance. They just ran out of fuel. Now that the airmass has changed, things will be different through the morning hours on Saturday.
Another disturbance is moving southeastward out of Arkansas. Ahead of it, thunderstorms have developed over western Tennessee and Northwest Mississippi. These storms are still some 200 miles NW of Birmingham, moving southeastward at 20 mph. They should reach Alabama during the early morning hours. The airmass wil be more supportive of them this time around. If they hold together, we could see a good chance of showers and storms during the morning. There will be a break and then more showers and storms will form during the afternoon with the heating of the day.
Drier and slightly cooler air will move into Alabama behind the passing disturbance and Sunday should be dry over the central part of the state. Thunderstorms will be limited to areas well southeast of Birmingham.
