A developing winter storm brought first a wintry mix of precipitation during the evening of the 12th and then heavy snow through the morning of the 13th. Rain changed to a mix of freezing rain and snow during the evening. Ice accumulations up to a tenth of an inch were reported along the lake shore counties. Once the precipitation changed to snow, the heavy snow fell at one to two inches an hour during the overnight hours. Travel was difficult especially on untreated roads as the snow covered the ice below.  Winds gusting to 35 mph at times caused areas of blowing and drifting snow.  Specific snowfall reports included: 17 inches at Minetto;  16 inches at Penfield; 15 inches at Webster and Fairport; 14 inches at Watertown, Pulaski, Oswego,  Walworth, Marion, East Bloomfield and Canandaigua and Irondequoit; 13 inches at Perrsyburg, Port Bay, Palmyra, Rochester, Croghan and Osceola; 12 inches at Alfred and Brockport; 11 inches at Conquest, Wyoming,  Lima and LeRoy; 10 inches at Eden, Stafford and East Aurora; 9 inches at Holley, Silver Springs and Portageville; 8 inches at Medina and Attica; and 7 inches at Lockport.

Winter Storm in NIAGARA, NEW YORK
From 12-JAN-18 14:00:00 to 13-JAN-18 08:00:00 (EST-5)
Property damage: 25.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Winter Storm in NORTHERN ERIE, NEW YORK
From 12-JAN-18 14:00:00 to 13-JAN-18 06:00:00 (EST-5)
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Winter Storm in CHAUTAUQUA, NEW YORK
From 12-JAN-18 14:00:00 to 13-JAN-18 06:00:00 (EST-5)
Property damage: 25.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Winter Storm in CATTARAUGUS, NEW YORK
From 12-JAN-18 14:00:00 to 13-JAN-18 09:00:00 (EST-5)
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in ALLEGANY, NEW YORK
From 12-JAN-18 14:00:00 to 13-JAN-18 09:00:00 (EST-5)
Property damage: 25.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Storm in SOUTHERN ERIE, NEW YORK
From 12-JAN-18 14:00:00 to 13-JAN-18 07:00:00 (EST-5)
Property damage: 25.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Winter Storm in ORLEANS, NEW YORK
From 12-JAN-18 17:00:00 to 13-JAN-18 09:00:00 (EST-5)
Property damage: 20.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Storm in MONROE, NEW YORK
From 12-JAN-18 17:00:00 to 13-JAN-18 09:00:00 (EST-5)
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Winter Storm in WAYNE, NEW YORK
From 12-JAN-18 17:00:00 to 13-JAN-18 11:00:00 (EST-5)
Property damage: 30.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Winter Storm in NORTHERN CAYUGA, NEW YORK
From 12-JAN-18 17:00:00 to 13-JAN-18 11:00:00 (EST-5)
Property damage: 20.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Winter Storm in OSWEGO, NEW YORK
From 12-JAN-18 17:00:00 to 13-JAN-18 11:00:00 (EST-5)
Property damage: 35.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Winter Storm in JEFFERSON, NEW YORK
From 12-JAN-18 17:00:00 to 13-JAN-18 11:00:00 (EST-5)
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in LEWIS, NEW YORK
From 12-JAN-18 17:00:00 to 13-JAN-18 11:00:00 (EST-5)
Property damage: 30.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Storm in GENESEE, NEW YORK
From 12-JAN-18 17:00:00 to 13-JAN-18 09:00:00 (EST-5)
Property damage: 30.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Winter Storm in WYOMING, NEW YORK
From 12-JAN-18 17:00:00 to 13-JAN-18 09:00:00 (EST-5)
Property damage: 25.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Storm in LIVINGSTON, NEW YORK
From 12-JAN-18 17:00:00 to 13-JAN-18 09:00:00 (EST-5)
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Social Media

Winter Storm in ONTARIO, NEW YORK
From 12-JAN-18 17:00:00 to 13-JAN-18 11:00:00 (EST-5)
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Social Media