SWOMCD
SPC MCD 042036
ARZ000-OKZ000-TXZ000-042130-
MESOSCALE DISCUSSION 1430
NWS STORM PREDICTION CENTER NORMAN OK
0336 PM CDT SAT JUL 04 2009
AREAS AFFECTED...NWRN TX...SRN OK...WCNTRL AR
CONCERNING...SEVERE THUNDERSTORM WATCH 545...546...548...
VALID 042036Z - 042130Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
545...546...548...CONTINUES.
PRE-FRONTAL OUTFLOW BOUNDARY HAS BECOME THE PRIMARY WIND SHIFT FOR
DEVELOPING THUNDERSTORM ACTIVITY ACROSS THE SRN HALF OF OK INTO
WCNTRL AR. CONVECTION HAS ONLY GRADUALLY INTENSIFIED OVER THE LAST
FEW HOURS BUT SHOULD CONTINUE TO INCREASE AS THE EVENING
APPROACHES...ESPECIALLY NEAR THE OUTFLOW/FRONTAL INTERSECTION ACROSS
THE SERN TX PANHANDLE INTO SWRN OK. IF SUFFICIENT COLD POOL CAN
GENERATE ACROSS THIS REGION IT APPEARS REASONABLE THAT DAMAGING
WINDS COULD EVOLVE ALONG LEADING EDGE OF MATURING MCS. GIVEN THE
VERY WARM SFC TEMPERATURES...DAMAGING WINDS ARE THE GREATEST SEVERE
THREAT.
..DARROW.. 07/04/2009
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...LZK...SHV...TSA...OUN...LUB...AMA...
LAT...LON 35529969 35079798 34869591 35049385 34519353 34129534
34239782 34079897 33610014 33980082 34830056 35529969
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