Published on: May 3, 2009 at 7:50 AM

The SPC has issued a severe thunderstorm watch from Louisiana to western Alabama for two systems, the one that is about to enter West Alabama and a developing derecho over eastern Texas.

The watch is in effect until 3 p.m.

ww0232_radar

CENTRAL ALABAMA COUNTIES
Bibb, Chilton, Fayette, Greene, Hale, Jefferson, Lamar, Marengo, Perry, Pickens, Shelby, Sumter, Tuscaloosa and Walker

DISCUSSION…TWO SVR MCS/S ARE FCST TO AFFECT WW AREA THROUGH AT
LEAST EARLY-MID AFTERNOON HOURS — WITH SOME TIME OFFSET BUT SPATIAL
OVERLAP BETWEEN THEM ACROSS CENTRAL/ERN MS. BOWING CONVECTIVE
SYSTEM NOW OVER CENTRAL MS…AND LARGER/VERY INTENSE AND POTENTIALLY
DERECHO-PRODUCING MCS OVER E TX — EACH WILL MOVE INTO FAVORABLY
MOIST…BUOYANT AND GRADUALLY DESTABILIZING AIR MASS.