SWODY1
SPC AC 091951
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0151 PM CST SAT FEB 09 2008
VALID 092000Z - 101200Z
..NO SVR TSTM AREAS FORECAST...
..SOUTH FL...
BOUNDARY LAYER AIRMASS HAS STEEPENED SIGNIFICANTLY ACROSS SOUTH FL
THIS AFTERNOON WHERE LATEST SFC-3KM VALUES ARE IN EXCESS OF 8 C/KM.
THIS IS REFLECTED IN RECENT INCREASE OF SHOWERS AND ISOLATED
THUNDERSTORMS...MAINLY SOUTH OF LAKE OKEECHOBEE. IT APPEARS
THUNDERSTORMS WILL GRADUALLY INCREASE IN AREAL COVERAGE/INTENSITY
OVER THE NEXT FEW HOURS PRIMARILY DRIVEN BY LAND/SEA BREEZE
INTERACTIONS. MARGINAL SHEAR WILL LIMIT ORGANIZATIONAL/SEVERE
POTENTIAL.
..OH VALLEY TO MIDDLE ATLANTIC...
DEEP WLY FLOW AND STRONG SUNSHINE HAS AIDED DESTABILIZATION ACROSS
ERN MO/IL/IND. LATEST DIAGNOSTIC DATA SUPPORTS THIS WITH SFC-BASED
PARCELS NOW BUOYANT...ROUGHLY 200 J/KG CAPE...AHEAD OF APPROACHING
COLD FRONT. MODELS CONTINUE TO SUGGEST CONVECTION WILL DEVELOP
ALONG LEADING EDGE OF THIS UNSTABLE AIRMASS...FARTHER DOWNSTREAM
OVER SRN IND LATER THIS EVENING. ANY THUNDERSTORMS THAT DEVELOP
SHOULD SPREAD EAST QUICKLY AS COLD FRONT SURGES ACROSS THE OH
VALLEY.
.DARROW.. 02/09/2008
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