[MCD] SWOMCD

[Mesoscale Convective Discussions]

ACUS11 KWNS 200031
SWOMCD
SPC MCD 200031 
TXZ000-200230-

MESOSCALE DISCUSSION 0571
NWS STORM PREDICTION CENTER NORMAN OK
0731 PM CDT WED APR 19 2006

AREAS AFFECTED...LOWER-MIDDLE RIO GRANDE RIVER VALLEY

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 200031Z - 200230Z

CLUSTER OF SVR STORMS OVER NERN COAHUILA MX WILL CONTINUE TO MOVE
EWD AROUND 20-25 KTS AND ENTER WEBB AND DIMMIT COUNTIES AROUND 02Z.
THREAT FOR LARGE HAIL AND DMGG WINDS APPEAR LIKELY IF STORMS CAN
MAINTAIN INTENSITY BEFORE ENCOUNTERING STRONGER INHIBITION FURTHER
EAST. 

00Z DRT/BRO SOUNDINGS INPUT WITH OBSERVATION AT LRD INDICATES A
EXTREMELY UNSTABLE AIRMASS WITH MLCAPES IN EXCESS OF 4000 J/KG.
CLUSTER OF SVR STORMS /WITH SUPERCELL STRUCTURE/ OVER NERN COAHUILA
MX WILL MOVE EWD AND SHOULD CROSS THE RIO GRANDE AROUND 02Z. GIVEN
THE AIRMASS IN PLACE OVER THE MIDDLE-LOWER RIO GRANGE RIVER
VALLEY..IT IS ANTICIPATED THAT A SVR THREAT WILL CONTINUE INTO THIS
AREA. HOWEVER...FURTHER EAST...CINH WAS HIGHER AND SHOULD CONTINUE
TO INCREASE WITH BOUNDARY LAYER COOLING THIS EVENING. THUS THE SVR
THREAT IS NOT ANTICIPATED TO BE MUCH GREATER THAN A 3-5 COUNTY AREA
SOUTH OF WW 211.

..CROSBIE.. 04/20/2006

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...CRP...EWX...BRO...

29079962 28700010 27779989 27219925 27559888 28079875
29209910 

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