MESOSCALE DISCUSSION 0041
NWS STORM PREDICTION CENTER NORMAN OK
0700 AM CST MON JAN 26 2004
AREAS AFFECTED...SRN AL/SWRN GA AND THE FL PNHDL
CONCERNING...TORNADO WATCH 2...
VALID 261300Z - 261500Z
THE POTENTIAL FOR ISOLATED TORNADOES/DAMAGING WINDS IS EXPECTED TO
CONTINUE FOR THE NEXT SEVERAL HOURS EWD ACROSS WW AREA.
AS OF 1240Z...REGIONAL RADAR MOSAIC SHOWED A LINE OF STRONG TO
SEVERE TSTMS FROM AROUND CSG SWWD TO NEAR PNS. WHILE OVERALL LINE
MOVEMENT IS SLOWLY TO THE E...INDIVIDUAL STORMS EMBEDDED WITHIN THE
LINE /SOME OF WHICH HAVE EXHIBITED MID-LEVEL ROTATION/ WERE MOVING
NE AT AROUND 50KTS. SLY LOW-LEVEL FLOW AHEAD OF ONGOING CONVECTION
CONTINUES TO ADVECT HIGHER THETAE AIRMASS NWD OFF THE GULF WITH 12Z
TLH SOUNDING INDICATING MLCAPES OF 500-600 J/KG. DYNAMIC FORCING
AHEAD OF APPROACHING MID-LEVEL TROUGH COUPLED WITH ADDITIONAL
MOISTENING/LIMITED DIABATIC HEATING OF BOUNDARY-LAYER SHOULD
CONTRIBUTE FURTHER TO THE DESTABILIZATION PROCESS EWD ACROSS THE WW
AREA THROUGH 15 OR 16Z.
IN ADDITION...LOCAL VWP TRENDS FROM FORT RUCKER/EGLIN AFB INDICATE
BACKING OF NEAR SURFACE WIND FIELDS /PRIMARILY BELOW 1KM/ WHICH IS
RESULTING IN 0-1KM SRH VALUES OF 100-200 M2/S2. GIVEN THE INCREASING
INSTABILITY AND LOW-LEVEL SHEAR...THE POTENTIAL FOR SUPERCELLS
EMBEDDED WITHIN AND/OR DEVELOPING AHEAD OF THE LINE APPEARS TO BE
INCREASING. ISOLATED TORNADOES AND DAMAGING WINDS WILL REMAIN THE
PRIMARY SEVERE WEATHER THREATS. EXCESSIVE RAINFALL WILL ALSO BE
LIKELY WITHIN TRAILING PORTION OF CONVECTIVE LINE OWING TO TRAINING
CELLS/SLOW LINE MOVEMENT.
..MEAD.. 01/26/2004
ATTN...WFO...FFC...TAE...BMX...MOB...LIX...
31808681 32058633 32028336 31818325 30068503 29938549
29938810 30098854
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