SWOMCD
SPC MCD 140441
TXZ000-140615-
MESOSCALE DISCUSSION 0913
NWS STORM PREDICTION CENTER NORMAN OK
1141 PM CDT TUE MAY 13 2008
AREAS AFFECTED...PARTS OF CNTRL/ERN TX
CONCERNING...SEVERE THUNDERSTORM WATCH 315...316...
VALID 140441Z - 140615Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
315...316...CONTINUES.
WARMING CENTERED AROUND THE 700 MB LEVEL IS MAINTAINING CONSIDERABLE
INHIBITION. BUT...SURFACE TEMPERATURES HAVE ONLY COOLED A FEW
DEGREES OFF AFTERNOON HIGHS TO THE EAST OF THE CONVECTIVELY
GENERATED COLD POOL ACROSS THE EDWARDS PLATEAU...INTO ANOTHER COLD
POOL NEAR/EAST OF THE TYLER/LUFKIN AREAS. AND...THE BOUNDARY LAYER
ACROSS THIS REGION REMAINS POTENTIALLY MODERATELY TO STRONGLY
UNSTABLE BENEATH STEEP MID-LEVEL LAPSE RATES...WITH CAPE UP TO
AROUND 3000 J/KG. THUS...STRONG/SEVERE CONVECTIVE DEVELOPMENT
APPEARS TO REMAIN POSSIBLE...AS FORCING ASSOCIATED WITH THE
HIGH-LEVEL SUBTROPICAL IMPULSE...AND NOW AN INCREASINGLY APPARENT
CONVECTIVE LOWER/MID-LEVEL VORTEX...WEAKENS INHIBITION AS IT SPREADS
ACROSS CENTRAL TEXAS BETWEEN NOW AND 06-09Z. HAIL AND DAMAGING WIND
GUSTS ARE POSSIBLE...ALONG WITH LOCALLY HEAVY RAINFALL IN AN AIR
MASS WITH PRECIPITABLE WATER IN EXCESS OF 1.75 INCHES.
..KERR.. 05/14/2008
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...HGX...FWD...EWX...
31699808 32289730 32459608 32149576 31089600 29939670
29699776 29909866 30659825 31059794
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