SWODY1
SPC AC 061610
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
ISSUED BY AFWA OFFUTT AIR FORCE BASE BELLEVUE NE
1010 AM CST THU DEC 06 2007
VALID 061630Z - 071200Z
..NO TSTM AREAS FORECAST...
..SYNOPSIS...
FAST WESTERLY FLOW WILL DOMINATE MOST OF THE COUNTRY WITH A 150 KNOT
JET MAX LOCATED IN THE CENTRAL US. A TROUGH IS DIGGING SOUTHWARD
INTO THE PACIFIC NORTHWEST WITH A -28C COLD CORE ALONG THE TROUGH
AXIS. MOST AREAS ARE QUITE DRY...WITH SOME DEEPER MOISTURE OFF THE
SOUTHERN CALIFORNIA AND GULF COASTS.
..PACIFIC COAST...
SOME WEAK INSTABILITY IS ASSOCIATED WITH THE APPROACH OF THE COLD
CORE OFF THE COAST OF OREGON...WITH LI VALUES APPROACHING ZERO. NO
LIGHTNING STRIKES HAVE BEEN OBSERVED WITH THIS FEATURE IN THE LAST
FEW HOURS...AND THIS AREA IS EXPECTED TO STAY MAINLY OFFSHORE
THROUGH THE FORECAST PERIOD.
..TEXAS GULF COAST...
SHALLOW MOISTURE IS EXPECTED TO ADVECT NORTHWARD INTO SOUTHERN TEXAS
DURING THE FORECAST PERIOD...WITH SURFACE DEWPOINTS RISING INTO THE
LOWER AND MID 60S. THIS WILL OCCUR UNDER A WEAK CAPPING INVERSION
SO THAT CONVECTIVE AND LIGHTNING PROBABILITIES REMAIN LOW.
..SOUTH FLORIDA COAST...
CONVECTION IS ONGOING ALONG A WEAK FRONTAL BOUNDARY SOUTH OF
FLORIDA. A FEW LIGHTNING STRIKES HAVE BEEN NOTED WITH THE STRONGEST
CONVECTION OFFSHORE...BUT GIVEN THE WEAK INSTABILITY LIGHTNING
PROBABILITIES ARE LOW...ESPECIALLY INLAND.
.AFWA.. 12/06/2007
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