This mesoscale update was just released by SPC….
MESOSCALE DISCUSSION 2001
NWS STORM PREDICTION CENTER NORMAN OK
0437 PM CDT FRI SEP 21 2007
AREAS AFFECTED…FL PANHANDLE…SRN AL AND SWRN GA
CONCERNING…SEVERE POTENTIAL…WATCH NEEDED SOON
VALID 212137Z – 212230Z
ENVIRONMENTAL CONDITIONS HAVE BECOME FAVORABLE FOR SEVERE STORMS AND
A WATCH ISSUANCE WILL BE COORDINATED BETWEEN THE SPC AND THE
AFFECTED LOCAL NATIONAL WEATHER SERVICE OFFICES SHORTLY.
PORTIONS OF SWRN GA..SRN AL AND THE FL PANHANDLE ARE BEING MONITORED
FOR A POSSIBLE WW.
TROPICAL DEPRESSION IN THE EXTREME NRN GULF WSW OF PFN IS RESULTING
IN STRONG LOW LEVEL SHEAR ACROSS THE AREA. CONVECTION HAS RECENTLY
STRENGTHENED ON A CONFLUENT BAND LOCATED IN GA FROM NEAR CSG TO 40 S
OF MCN AND ALSO ALONG A NEWLY DEVELOPED BAND IN THE FL PANHANDLE
FROM NEAR CEW TO NEAR MAI. GIVEN THE RECENT INCREASE IN UPDRAFT
STRENGTH…COMBINED WITH THE EXPECTED STRONG LOW/MID LEVEL SHEAR AND
VERY MOIST BOUNDARY LAYER.
..IMY.. 09/21/2007
