SNOWFALL WARNING: North Bay – West NipissingIssued at 9:19 PM EST FRIDAY 5 DECEMBER 2008


SNOW AND LOCAL SNOW SQUALLS TONIGHT AND SATURDAY.

COLD ARCTIC AIR HAS MOVED OVER NORTHERN ONTARIO. THIS COLD AIR PASSING OVER THE RELATIVELY WARM WATERS OF LAKE SUPERIOR IS GENERATING LAKE EFFECT FLURRIES AND LOCAL SNOWSQUALLS. AT 9.15 PM EST..WEATHER RADAR SHOWS MULTIPLE SNOWSQUALLS COMING ONSHORE JUST NORTH OF MONTREAL RIVER TO WAWA EXTENDING UP TO 60 KILOMETRES INLAND. THESE SQUALLS COULD PRODUCE ADDITIONAL LOCALIZED AMOUNTS OF 10 TO 15 CENTIMETRES IN THESE AREAS. THE SQUALLS ARE EXPECTED TO SHIFT SLOWLY NORTH THIS EVENING AND ARE EXPECTED TO INTENSIFY. A SINGLE BAND MAY DEVELOP WHICH COULD BE CAPABLE OF PRODUCING NEAR ZERO VISIBILITIES AND SNOWFALL ACCUMULATIONS NEAR 20 CENTIMETRES. COMPLICATING MATTERS IS AN APPROACHING LOW PRESSURE SYSTEM WHICH WILL BRING GENERAL SNOWFALL AMOUNTS OF ABOUT 5 CENTIMETRES TO MUCH OF NORTH CENTRAL ONTARIO TONIGHT AND SATURDAY MORNING. SNOWSQUALLS ALSO CONTINUE TO THE NORTHEAST OF GEORGIAN BAY. THESE SQUALLS HAVE MOVED INTO THE KILLARNEY AND WEST NIPISSING AREAS AND ARE EXPECTED TO SLOWLY MOVE INTO THE SUDBURY AREA TONIGHT. THE APPROACHING LOW PRESSURE SYSTEM WILL ALSO SERVE TO ENHANCE THE SNOWFALL AMOUNTS IN THESE REGIONS. GENERAL AMOUNTS OF 15 CENTIMETRES WITH LOCAL TOTALS NEAR 30 CENTIMETRES ARE EXPECTED BY SATURDAY NIGHT. THE SNOW ASSOCIATED WITH THE SNOWSQUALLS AND THE LOW WILL END SATURDAY MORNING FOR REGIONS TO THE NORTHEAST OF SUPERIOR AND SATURDAY EVENING FOR THOSE AREAS TO THE NORTH OF GEORGIAN BAY AS WINDS SHIFT TO NORTHERLY IN THE WAKE OF THE SYSTEM. MOTORISTS SHOULD BE PREPARED FOR DANGEROUS WINTER DRIVING CONDITIONS DUE TO LOW VISIBILITIES IN BURSTS OF HEAVY SNOW AND BLOWING SNOW.

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