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MESOSCALE DISCUSSION 0231
NWS STORM PREDICTION CENTER NORMAN OK
0251 AM CST TUE FEB 26 2013
AREAS AFFECTED...FL PANHANDLE
CONCERNING...TORNADO WATCH 45...
VALID 260851Z - 261045Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 45 CONTINUES.
SUMMARY...THE THREAT FOR TORNADOES AND DAMAGING WINDS APPEARS TO BE
INCREASING FOR A SMALL PORTION OF THE FL PANHANDLE AND COASTAL BEND.
DISCUSSION...TLH RADAR SHOWS A LINE OF SUPERCELLS ALONG A COLD FRONT
WITH INLAND PORTION CURRENTLY ACROSS CALHOUN AND GULF COUNTIES. THE
STRONGEST ROTATION WAS NOTED OFFSHORE WITH MULTIPLE CRESCENT SHAPED
ECHOES. ONE SUCH STORM IS HEADING TOWARD APALACHICOLA AND MAY
PRODUCE DAMAGING WINDS OR A TORNADO.
INSPECTION OF FORECAST SOUNDINGS SUGGESTS DEWPOINTS FROM 68-70 F ARE
REQUIRED FOR CLEARLY SURFACE BASED INFLOW PARCELS. THIS TYPE OF AIR
MASS LIKELY EXISTS IN A NARROW CORRIDOR IMMEDIATELY AHEAD OF THE
LINE INLAND AND OFFSHORE. GIVEN THE COOLER AIR MASS AWAY FROM THE
COAST...THE GREATEST THREAT FOR TORNADOES AND STRONG WINDS WILL BE
ACROSS COASTAL COUNTIES FOR THE NEXT SEVERAL HOURS. TLH HODOGRAPH
MODIFIED FOR AAF WINDS RESULTS IN VERY LARGE HODOGRAPHS WITH 0-1 KM
SRH OVER 600 M2/S2.
..JEWELL.. 02/26/2013
ATTN...WFO...TBW...JAX...TAE...
LAT...LON 29308293 29828546 30608546 31118550 30628294 29308293
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