Cleveland weather service early thinking regarding major storm next week. LONG TERM /SUNDAY THROUGH WEDNESDAY/ MAJOR CHANGES COMING TO THE FORECAST OVER THE EXTENDED PERIODS. EXTENDED MODELS ARE IN FAIRLY GOOD AGREEMENT THAT MAJOR WINTER STORM COULD AFFECT THE LOCAL AREA FOR CHRISTMAS. NEARLY ZONAL FLOW WILL PERSIST ACROSS THE AREA EARLY INTO THE WEEKEND AND A VIGOROUS TROUGH WILL DEVELOP OVER THE CENTRAL UNITED STATES BY TUESDAY MORNING. AS THIS TAKES PLACE...SURFACE LOW PRESSURE WILL DEVELOP OVER TEXAS AND ANOTHER CENTER OVER IOWA BY TUESDAY MORNING. THE LOWS WILL MERGE OVER THE WESTERN OHIO VALLEY REGION BY WEDNESDAY MORNING AND LIFT NORTH ACROSS LAKE ERIE. MEANWHILE...UPPER LEVEL TROUGH WILL DIG DEEP INTO THE DEEP SOUTH AND AND BECOME NEGATIVELY TILTED. THIS WILL CAUSE A BIG BOMB LOW PRESSURE SYSTEM TO DEVELOP OVER THE CENTRAL GREAT LAKES BY WEDNESDAY AFTERNOON. THE UPPER LEVEL TROUGH WILL TRANSITION INTO AN UPPER LEVEL LOW AND LIFT SLOWLY NORTH AND BECOME STACKED OVER THE SURFACE LOW PRESSURE SYSTEM. STRONG WARM AIR ADVECTION WILL TAKE PLACE OVER THE REGION AHEAD OF THE LOW TUESDAY INTO WEDNESDAY AND THEN AS COLD FRONT SWEEPS THROUGH THE AREA WEDNESDAY EVENING...ARCTIC AIR WILL CHANGE ANY RAIN OVER TO SNOW. SO...IF ALL GOES AS EXPECTED IN THE MODELS...WE COULD SEE A WHITE CHRISTMAS OVER THE ENTIRE FORECAST AREA. ONE PROBLEM THAT WILL OCCUR WITH THIS SYSTEM IS THE VERY STRONG GRADIENT MEANING WINDS COULD BE VERY GUSTY AS THE STORM SYSTEM AFFECTS THE REGION. SO...ANY CHRISTMAS TRAVELERS SHOULD DEFINITELY STAY UP ON THE LATEST FORECASTS THROUGH THE WEEK.
Posted on: Wed, 17 Dec 2014 20:54:00 +0000
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