SWODY1
SPC AC 140043
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0743 PM CDT SUN APR 13 2008
VALID 140100Z - 141200Z
..NO TSTM AREAS FORECAST...
..ERN WA/ID PNHDL...
00Z SPOKANE SOUNDING INDICATED SOME MOISTENING IN THE 750-600 MB
LAYER SINCE 12Z WITH MODEST MIDLEVEL LAPSE RATES OF AROUND 7 C/KM.
HOWEVER...THE BOUNDARY LAYER WAS NOTABLY DRIER THAN MODEL FORECAST
SOUNDINGS WITH LITTLE OR NO OBSERVED CONVECTIVE INSTABILITY.
CONTINUED ASCENT ALONG FRONT AND AHEAD OF UPPER TROUGH SHOULD SERVE
TO FURTHER MOISTEN ENVIRONMENT AND PERHAPS STEEPEN MIDLEVEL LAPSE
RATES...EFFECTIVELY CONTRIBUTING TO POCKETS OF WEAK CONVECTIVE
INSTABILITY TONIGHT. WHILE A FEW LIGHTNING STRIKES ARE POSSIBLE
WITH ANY DEEPER CONVECTIVE ELEMENTS...ANTICIPATED AREAL COVERAGE IS
EXPECTED TO REMAIN TOO SPARSE TO WARRANT INCLUSION OF A GENERAL
THUNDER AREA.
..NC...
LIGHTNING DATA SHOW ISOLATED STRIKES WITHIN THE PAST HOUR IN
ASSOCIATION WITH ELEVATED CONVECTION MOVING THROUGH PORTIONS OF
CNTRL NC. 00Z GSO SOUNDING SUGGESTS THAT THIS ACTIVITY IS QUITE
HIGH BASED /AROUND 600 MB/ AND LIKELY ASSOCIATED WITH VIGOROUS
VORTICITY MAXIMUM LIFTING NEWD ACROSS THE CAROLINAS. THIS
CONVECTIVE WILL REMAIN CAPABLE OF AN ADDITIONAL LIGHTNING STRIKE OR
TWO TONIGHT OVER S-CNTRL INTO ERN NC. AS ABOVE...THIS POTENTIAL IS
TOO LOW FOR A THUNDER AREA.
.MEAD.. 04/14/2008
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