SWODY1
SPC AC 291920
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0220 PM CDT TUE APR 29 2008
VALID 292000Z - 301200Z
...NO SVR TSTM AREAS FORECAST...
...NRN ROCKY MOUNTAIN REGION...
STRONG SURFACE HEATING AND STEEP LAPSE RATES ARE DESTABILIZING THE
ATMOSPHERE OVER PORTIONS OF THE NRN ROCKIES AHEAD OF COLD FRONT.
MEAGER LOW LEVEL MOISTURE WILL LIMIT CAPE TO BELOW 500 J/KG.
INCREASING UPPER DIVERGENCE AND LARGE SCALE ASCENT DOWNSTREAM FROM
EWD ADVANCING UPPER TROUGH WILL PROMOTE ISOLATED THUNDERSTORMS
INITIALLY OVER THE HIGHER TERRAIN AND ALSO IN VICINITY OF THE FRONT
AS IT CONTINUES EAST OVERNIGHT. INVERTED-V BOUNDARY LAYERS AND STEEP
LAPSE RATES SUGGEST ISOLATED STRONG WIND GUSTS AND SMALL HAIL MIGHT
BE POSSIBLE. HOWEVER...OVERALL THREAT WILL REMAIN MARGINAL DUE TO
LIMITED MOISTURE AND INSTABILITY.
...S FL...
RESIDUAL LOW LEVEL MOISTURE IN POST FRONTAL REGION WITH MID 60S
DEWPOINTS ALONG WITH SURFACE HEATING IS CONTRIBUTING TO MODEST
INSTABILITY OVER S FL. A FEW THUNDERSTORMS WILL REMAIN POSSIBLE
ALONG SEA BREEZE BOUNDARIES THIS AFTERNOON...BEFORE DIMINISHING THIS
EVENING WITH THE ONSET OF NOCTURNAL COOLING.
..DIAL.. 04/29/2008
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