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Lake Effect Snow Advisory

Issued At: Monday, 30 Nov 2009, 12:00 PM EST
Expires At: Tuesday, 01 Dec 2009, 12:00 PM EST

...FIRST ORGANIZED LAKE EFFECT SNOW EVENT OF THE SEASON EXPECTED TONIGHT... .A POTENT BUT FAST MOVING AREA OF LOW PRESSURE WILL CROSS SOUTHERN ONTARIO LATE TONIGHT AND TUESDAY MORNING. A COLD SOUTHWESTERLY FLOW AHEAD OF THIS FEATURE WILL GENERATE A BAND OF MODERATE TO POTENTIALLY HEAVY WET SNOW ACROSS PARTS OF THE NIAGARA FRONTIER AND WESTERN SOUTHERN TIER...WITH THE BUFFALO METROPOLITAN AREA LIKELY BEING FOUND IN THE AREA OF HEAVIEST SNOW. THE SNOW WILL BEGIN OVER LAKE ERIE SHORTLY AFTER MIDNIGHT BEFORE EXTENDING ACROSS NIAGARA AND NORTHERN ERIE COUNTIES DURING THE WEE HOURS OF TUESDAY MORNING. SNOWFALL RATES OF A HALF TO ONE INCH AN HOUR WILL THEN BE LIKELY IN THE HEART OF THE SNOW BAND...WHICH WILL BE IN THE VICINITY OF THE BUFFALO METROPOLITAN AREA BETWEEN 5 AM AND 9 AM. THIS WILL BE THE FIRST MEASURABLE SNOWFALL FOR MANY AREAS..AND SINCE THE HEAVIEST SNOW COULD FALL DURING THE MORNING RUSH HOUR... PARTICULAR ATTENTION SHOULD BE GIVEN TO UPDATED FORECASTS AND STATEMENTS. SNOWFALL AMOUNTS WILL GENERALLY RANGE FROM 3 TO 6 INCHES IN THE MOST PERSISTENT BAND. THE SNOW BAND COULD ALSO CONTAIN SOME THUNDER AND LIGHTNING. ...LAKE EFFECT SNOW ADVISORY IN EFFECT FROM 1 AM TO NOON EST TUESDAY... THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A LAKE EFFECT SNOW ADVISORY...WHICH IS IN EFFECT FROM 1 AM TO NOON EST TUESDAY. A BAND OF MODERATE TO POSSIBLY HEAVY LAKE EFFECT SNOW WILL DEVELOP OVER LAKE ERIE AFTER MIDNIGHT. THIS BAND WILL BECOME BETTER ORGANIZED DURING THE WEE HOURS OF TUESDAY MORNING AS IT WILL EXTEND ACROSS THE MOST POPULATED PORTION OF THE NIAGARA FRONTIER. THE BAND COULD INCLUDE THE LAKE SHORE AREA OF CHAUTAUQUA COUNTY. SNOWFALL RATES OF ONE INCH PER HOUR WILL BE POSSIBLE UNDER THE MAIN SNOW BAND WITH TOTAL SNOWFALL AMOUNTS LATE TONIGHT AND TUESDAY MORNING GENERALLY RANGING FROM 3 TO 6 INCHES. THE BAND WILL ALSO LIKELY PRODUCE SOME THUNDER AND LIGHTNING AT TIMES. THE SNOW BAND WILL SETTLE TO THE SOUTH OF THE BUFFALO METRO AREA DURING THE COURSE OF TUESDAY MORNING.

Areas affected: Chautauqua, Genesee, Niagara, Northern Erie, Southern Erie


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