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ACUS02 KWNS 061722 SWODY2 SPC AC 061721 DAY 2 CONVECTIVE OUTLOOK NWS STORM PREDICTION CENTER NORMAN OK 1121 AM CST MON FEB 06 2012 VALID 071200Z - 081200Z ...NO SVR TSTM AREAS FORECAST... ...SYNOPSIS... A NRN STREAM SHORTWAVE TROUGH OVER SRN CANADA WILL PROGRESS QUICKLY ESEWD OVER NRN NEW ENGLAND...WHILE AN ASSOCIATED REINFORCING SURGE OF CONTINENTAL AIR SPREADS SWD ACROSS THE CENTRAL STATES. FARTHER S...A FRONT WILL REMAIN QUASI-STATIONARY FROM S FL WWD ACROSS THE SRN GULF OF MEXICO. LINGERING MOISTURE/INSTABILITY OVER CENTRAL/S FL WILL MAINTAIN A RISK FOR ISOLATED THUNDERSTORMS...MAINLY DURING THE DAY AS EMBEDDED SPEED MAXIMA EJECT EWD OVER N FL. FARTHER W... A MOISTENING WAA PATTERN WILL BECOME ESTABLISHED OVER S TX TOMORROW NIGHT. THE LOW-MIDLEVEL MOISTENING COULD BE SUFFICIENT TO SUPPORT WEAK INSTABILITY...THOUGH THE LIGHTNING RISK APPEARS MARGINAL AT THIS TIME. A MIDLEVEL SHORTWAVE TROUGH NEAR 33 N AND 134 W IS FORECAST TO DIG SEWD JUST OFF THE SRN CA/NRN BAJA COAST TOMORROW. THE RICHEST MOISTURE PLUME IS EXPECTED TO REMAIN JUST OFFSHORE...AND WEAK OFFSHORE LOW-LEVEL FLOW WILL LIMIT THE PROSPECTS FOR SURFACE-BASED INSTABILITY INLAND. NAM/GFS FORECAST SOUNDINGS CONFIRM ONLY MINIMAL BUOYANCY IN THE 850-500 MB LAYER...WITH RELATIVELY WARM EQUILIBRIUM LEVEL HEIGHTS. THUS...THE PROSPECTS FOR LIGHTNING PRODUCTION INLAND APPEAR TOO LIMITED TO WARRANT MAINTAINING A TSTM OUTLOOK AREA FOR COASTAL SRN CA. ..THOMPSON.. 02/06/2012 |
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