SWODY1
SPC AC 151602
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1002 AM CST TUE DEC 15 2009
VALID 151630Z - 161200Z
...NO SVR TSTM AREAS FORECAST...
...GULF COAST REGION INTO THE SOUTHEAST ATLANTIC COAST...
POSITIVELY-TILED SHORTWAVE TROUGH IN THE SRN STREAM WILL CONTINUE TO
SHIFT SLOWLY EWD INTO NERN MEXICO/WRN TX THROUGH THE PERIOD...WITH
MORE ACTIVE NRN STREAM PERSISTING OVER THE NRN TIER STATES. SURFACE
FRONT NOW EXTENDING ENEWD ACROSS THE WRN GULF BASIN INTO THE
SOUTHEASTERN U.S. WILL GRADUALLY BE PUSHED SSEWD THROUGH THE PERIOD
AS CONTINENTAL HIGH PRESSURE CONTINUES TO SPREAD ACROSS THE MIDWEST.
AHEAD OF THIS SHALLOW BOUNDARY...SURFACE CONDITIONS WILL REMAIN
RELATIVELY MOIST AND MODEST WSWLY H85 FLOW WILL SUSTAIN INFLUX OF
GREATER THETA-E AIR ATOP STABLE SURFACE LAYER ACROSS THE WRN/CENTRAL
GULF COAST. MODERATE CLOUD LAYER SHEAR...ALONG WITH FAIRLY STEEP
MID LEVEL LAPSE RATES...SHOULD SUPPORT SUFFICIENT HAIL GROWTH
POTENTIAL TO INTRODUCE LOW END SEVERE PROBABILITIES NEAR THE UPPER
TX/SWRN LA COAST. OTHERWISE...ANOTHER DAY OF HEAVY RAINFALL WILL
CONTINUE ACROSS PORTIONS OF THE CENTRAL GULF COAST REGION BEFORE
SURFACE FRONT BEGINS TO PUSH FARTHER SOUTH BY LATE THIS
AFTERNOON/EVENING.
..EVANS.. 12/15/2009
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