Monday, November 10, 2008

DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 110102
SWODY1
SPC AC 110100

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0700 PM CST MON NOV 10 2008

VALID 110100Z - 111200Z

...THERE IS A SLGT RISK OF SVR TSTMS ACROSS TX AND SOUTHERN OK...

...SOUTHERN PLAINS...
WATER VAPOR IMAGERY FEATURES CLOSED LOW ADVANCING NORTHEASTWARD
EARLY THIS EVENING OVER THE CENTRAL HIGH PLAINS...WITH ASSOCIATED
STRONG UPPER JET CROSSING PORTIONS OF WESTERN/NORTHERN TX AND OK
WITH 60-70 KT AT 500 MB/110+ KT AT 250 MB PER 00Z OBSERVED RAOBS AND
REGIONAL PROFILER NETWORK. WITH A DOUBLE NW-SE WARM FRONTAL
STRUCTURE ACROSS TX...AN INCREASINGLY MOIST BOUNDARY LAYER /60S F
SURFACE DEWPOINTS/ CONTINUES TO GRADUALLY DEVELOP NORTHWARD ACROSS
MUCH OF CENTRAL/SOUTHEAST TX.

WITHIN THIS INCREASINGLY MOIST AIRMASS...SURFACE/NEAR-SURFACE BASED
TSTMS WILL CONTINUE TO DEVELOP THIS EVENING ACROSS MUCH OF CENTRAL
TX/HILL COUNTRY VICINITY...WITH A SEVERE THREAT POTENTIALLY
INCREASING OVERNIGHT ACROSS SOUTHEAST TX. STRONG DEEP LAYER
SHEAR/LOW LEVEL SRH WILL CONTINUE TO PROVIDE A FAVORABLE KINEMATIC
ENVIRONMENT FOR SUPERCELLS/BOWS THROUGH THE NIGHT...WITH RISKS FOR
DAMAGING WINDS AND A TORNADO OR TWO. REFERENCE MESOSCALE DISCUSSION
2364 AND TORNADO WATCH 930 FOR ADDITIONAL SHORT TERM DETAILS.

FROM FAR NORTH TX AND SOUTHERN OK NORTH/EASTWARD...OCCASIONAL SEVERE
HAIL WILL BE THE PRIMARY SEVERE RISK WITH AN INCREASING SOUTHERLY
LOW LEVEL JET/WARM ADVECTION REGIME TONIGHT.

..GUYER.. 11/11/2008

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