A SUNNY/ PLEASANT FRIDAY FOR UPSTATE NY/ MOST OF PA...MOSTLY SUNNY, VERY WARM/ HUMID & MORE UNSTABLE SAT. AFTERNOON& A STORMY SUNDAY: ...HIGH PRESSURE WILL RIDE OVER UPSTATE NY TODAY & PROVIDE ABUNDANT SUNSHINE & A NICE AFTERNOON HIGH TO THE MID 70S OVER MOST LOCATIONS. ...TONIGHT, AN UPPER- LEVEL STORM SYSTEM OVER THE WESTERN GREAT LAKES WILL EXTEND EASTWARD A WEAK WARM FRONT FROM THE SYSTEM INTO WESTERN, NY & LAKE ONTARIO, FEEDING IN MORE WARMER MOIST/ HUMID& UNSTABLE AIR MASS WHICH MAY TOUCH- OFF A FEW SHOWERS/ T- STORMS TO THE MAINLY NORTHERN AREAS OF NY & LAKE ONTARIO, WHERE MORE FORCING TO THE ATMOSPHERE IS LIKELY. ...ON SATURDAY; EXPECT A NOTICEABLY, MUCH WARMER/ HUMID DAY UNDER PARTLY TO MOSTLY SUNNY SKIES AS DAYTIME SURFACE HEATING TAKES PLACE, ESCALATING AVAILABLE CONVECTIVE ENERGY JOULES FROM 1000 TO 1500, SUFFICIENT FOR SCATTERED T- STORMS LATER IN THE DAY IF THERE IS ENOUGH OF A TRIGGER FROM AN EASTERN GREAT BREEZE DURING THE AFTERNOON, BUT HIGHS ARE FORECAST TO ACHIEVE AT LEAST 85. ...LATER SAT. NIGHT...A MID- LEVEL SHORT WAVE TROUGH IS FORECAST TO EJECT EASTWARD THROUGH THE EASTERN GREAT LAKES TO WESTERN/ CENTRAL,NY/ NORTH- CENTRAL, PA OVERNIGHT WITH INCREASING CHANCES FOR SCATTERED SHOWERS/ T-STORMS IN THE MORE UNSTABLE/ HIGHER DEW POINT AIR MASS. ...ON SUNDAY; THE MID/ UPPER- LEVEL TROUGH IS EXPECTED TO MOVE ACROSS LAKE ONTARIO TO THE ST. LAWRENCE VALLEY BY EVENING, SPREADING A MORE WIDESPREAD AREA OF SHOWERS & T- STORMS TO CENTRAL/ EASTERN. NY & NORTHEAST, PA WHICH MAYBE ACCOMPANIED BY HEAVY DOWNPOURS & STRONG GUSTY WINDS. FROM STEVE MATTISON...VOLUNTEER SKYWARN SPOTTER FOR THE NWS/ BINGHAMTON, NY.
Posted on: Fri, 29 Aug 2014 10:10:29 +0000
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