Thursday, May 20, 2010

MESO: Mesoscale Discussion 0631

ACUS11 KWNS 201000
SWOMCD
SPC MCD 200959
OKZ000-TXZ000-201100-

MESOSCALE DISCUSSION 0631
NWS STORM PREDICTION CENTER NORMAN OK
0459 AM CDT THU MAY 20 2010

AREAS AFFECTED...SERN OK...NCNTRL TX

CONCERNING...SEVERE THUNDERSTORM WATCH 193...

VALID 200959Z - 201100Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 193
CONTINUES.

LATEST WV IMAGERY SUGGESTS ASCENT IS BEGINNING TO OVERSPREAD MUCH OF
SCNTRL OK AND NCNTRL TX AHEAD OF SRN PLAINS UPPER TROUGH. RECENT
THUNDERSTORM INTENSIFICATION OVER EASTLAND/PALO PINTO/ERATH COUNTIES
IN NCNTRL TX SEEMS TO SUPPORT THE INCREASING UVV ATOP FAIRLY
MOIST/UNSTABLE AIRMASS. RUC FORECAST SOUNDINGS SUGGEST INFLOW LAYER
FOR THESE STRENGTHENING UPDRAFTS IS LIKELY ROOTED NEAR 850MB...WITH
CLOUD LAYER SHEAR MORE THAN ADEQUATE FOR MAINTENANCE OF AT LEAST
STRONG/SEVERE MULTI-CELL UPDRAFTS CAPABLE OF GENERATING HAIL. A
GRADUAL INCREASE IN CONVECTION MAY TRANSPIRE ACROSS MUCH OF NCNTRL
TX OVER THE NEXT SEVERAL HOURS.

..DARROW.. 05/20/2010

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

ATTN...WFO...TSA...FWD...OUN...

LAT...LON 32349897 33429746 34519696 34639549 33359587 32259737
32349897

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