DAY 1 CONVECTIVE OUTLOOK NWS STORM PREDICTION CENTER NORMAN OK 1116 AM CDT FRI APR 04 2014 VALID 041630Z - 051200Z ...THERE IS A SLGT RISK OF SVR TSTMS THIS AFTERNOON ACROSS A PART OF THE CNTRL GULF COAST... ...SYNOPSIS... AN INTENSE NEGATIVELY TITLED SHORT-WAVE TROUGH AND ASSOCIATED MIDLEVEL JET STREAK OVER THE UPPER MIDWEST INTO LOWER OH VALLEY WILL TRANSLATE NEWD INTO ERN ONTARIO/WRN QUEBEC AND LOWER GREAT LAKES BY 05/12Z. ELSEWHERE...A SHORT-WAVE TROUGH WILL AMPLIFY OVER THE LOWER CO VALLEY INTO BAJA AND NWRN MEXICO. AT THE SURFACE...AN OCCLUDED LOW OVER CNTRL LAKE MI WILL DEVELOP NEWD INTO WRN QUEBEC WHILE A TRAILING COLD FRONT ADVANCES EWD THROUGH THE UPPER OH/TN VALLEYS AND CNTRL APPALACHIANS TO OFF THE MID ATLANTIC COAST BY DAYBREAK SATURDAY. THE COLD FRONT WILL PROGRESSIVELY OVERTAKE A WARM FRONT LIFTING NWD THROUGH THE MID ATLANTIC STATES WITH WEAK CYCLOGENESIS FORECAST AT THE INTERSECTION OF THESE TWO BOUNDARIES. MEANWHILE...THE TRAILING EXTENSION OF THE COLD FRONT WILL MOVE MORE SLOWLY EWD/SEWD THROUGH THE GULF COAST STATES AND SRN APPALACHIANS WITH THIS FEATURE LIKELY EXTENDING FROM THE TIDEWATER REGION SWWD THROUGH THE FL PNHDL TO THE NEAR-SHORE WATERS OFF THE SERN LA COAST BY THE END OF THE PERIOD.
vendredi 4 avril 2014
Apr 4, 2014 1630 UTC Day 1 Convective Outlook,,,,,,,,,,,,,,,,,,,,,,,http://www.spc.noaa.gov/products/outlook/day1otlk.html
SPC AC 041616
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