SWOMCD
SPC MCD 080443
TXZ000-NMZ000-080545-
MESOSCALE DISCUSSION 0751
NWS STORM PREDICTION CENTER NORMAN OK
1143 PM CDT MON MAY 07 2007
AREAS AFFECTED...SOUTH TX
CONCERNING...TORNADO WATCH 253...
VALID 080443Z - 080545Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 253 CONTINUES.
STRONG THUNDERSTORM CLUSTERS JUST WEST OF THE RIO GRANDE HAVE
FINALLY CONGEALED AND EVOLVED INTO A BOW ECHO. THIS BOW IS NOW
SURGING EWD ACROSS WEBB/ZAPATA COUNTIES WITHIN MODERATE INSTABILITY
CHARACTERIZED BY STRONG ELY COMPONENT IN THE LOWEST 3 KM. FORWARD
PROPAGATION MAY ALLOW THIS ACTIVITY TO APPROACH THE COAST LATER THIS
MORNING...THOUGH LIKELY IN A SOMEWHAT DEGRADED STATE. IN THE SHORT
TERM...IT APPEARS SEVERE THREAT MAY SPREAD EAST OF ONGOING WATCH
INTO DUVAL AND MCMULLEN COUNTIES...JUST WEST OF THE CORPUS CRISTI
AREA. WATCH MAY NEED TO BE EXTENDED LOCALLY TO ACCOUNT FOR THIS
SEVERE THREAT.
.DARROW.. 05/08/2007
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...LUB...MAF...CRP...BRO...
32900364 34320202 34360060 33320039 32460157 31770363
28110016 28169807 27369775 26800004
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