SPC AC 050058
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0758 PM CDT WED AUG 04 2010
VALID 050100Z - 051200Z
...THERE IS A SLGT RISK OF SVR TSTMS FROM IND EWD INTO THE DELMARVA
AND PORTIONS OF THE MID ATLANTIC...
...THERE IS A SLGT RISK OF SVR TSTMS OVER MUCH OF ERN WY...SWRN
SD...AND WRN NEB...
...IND EWD INTO THE DELMARVA AND MID ATLANTIC...
A BROAD ZONE OF LOW LEVEL WARM ADVECTION WILL PERSIST FROM THE MID
MS VALLEY EWD ACROSS THE OH VALLEY TO THE E COAST WITH WLY 850 MB
FLOW INCREASING TO OVER 30 KTS. MEANWHILE...MID/UPPER HEIGHT FALLS
WILL PERSIST AS A LARGE SCALE TROUGH SINKS SWD ACROSS THE GREAT
LAKES. WITH A VERY MOIST AND UNSTABLE AIR MASS IN PLACE...CONDITIONS
WILL REMAIN FAVORABLE FOR SEVERE WIND WITH ANY ORGANIZED CLUSTERS.
ONE CLUSTER WAS OVER INDIANA AT 01Z...AND WILL PROCEED EWD INTO OH
WITH A WIND THREAT. TO THE SE...OTHER SUBSTANTIAL STORMS WILL
CONTINUE ESE ACROSS VA AND INTO NRN NC THIS EVENING. GIVEN NWLY DEEP
LAYER EFFECTIVE SHEAR AROUND 25-30 KTS...AND STRONG
INSTABILITY...GUSTY OUTFLOW CAN BE EXPECTED WITH THESE STORMS BEFORE
THEY DIE OVER NC.
...ERN WY...SWRN SD...WRN NEB...
AFTER BEING RELATIVELY COOL AND STABLE MOST OF THE DAY...THE AREA
HAS BECOME MODERATELY UNSTABLE EARLY THIS EVENING. 00Z RIW AND RAP
SOUNDINGS SHOW RELATIVELY STEEP LAPSE RATES ALOFT WITH SUFFICIENT
DEEP LAYER SHEAR FOR SUPERCELLS. AS GRADUAL HEIGHT FALLS
PERSIST...AND A SELY LOW LEVEL JET INCREASES TO AROUND 15
KTS...SCATTERED STORMS...SOME SUPERCELLS...ARE LIKELY AS THEY MOVE
ACROSS ERN WY AND EVENTUALLY INTO WRN SD/NEB. LARGE HAIL WILL BE THE
PRIMARY SEVERE THREAT...BUT GUSTY WINDS MAY OCCUR AS
WELL...ESPECIALLY IF STORMS CAN BOW AS THEY TRAVEL SEWD IN A FORWARD
PROPAGATING SENSE.
..JEWELL.. 08/05/2010
CLICK TO GET WUUS01 PTSDY1 PRODUCT
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0600Z
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