First Defense: Heavy Snow Likely This Afternoon Through Sunday

Credit: MGN

JAMESTOWN – The next 24 hours will be rather messy with a deep storm system passing close to the region, bringing the potential for heavy wet snow across the Southern Tier.

The National Weather Service has issued a Winter Storm Warning for Chautauqua and Cattaraugus Counties, effective from 2p.m. this afternoon until 7 a.m Sunday.

There is also a Winter Storm Storm Warning for Southern Erie County, PA, effective until 1 p.m. Sunday afternoon.

A deep area of Low pressure is currently moving northward and inland off the Northeast coast. As this system continues to move towards the region, colder air will be filter into the region and produce a changeover to all snow.

National radar mosaic courtesy WSI

The changeover started a little after 11 a.m. across the western Southern Tier as seen from the NWS Buffalo Doppler radar using RadarScope’s precipitation depiction product.

The timing of the changeover was ahead of schedule by a couple of hours as colder air came in sooner than expected. High resolution modeling did not suggest a changeover until at least 1 p.m. In any regard, the widespread snow will continue to fill in across the region through the remainder of today and tonight.

While wind will come up with gusts possibly up to 40 MPH at times, the snow will be quite heavy due to a high water concentration so blowing and drifting snow will likely not be a major issue. However, it could be an issue for those who will have to shovel it due to the weight.

Total snow accumulations will likely range between 6 to 12 inches along the higher terrain of the Southern Tier, 4 to 8 inches across the lower elevations, 2 to 4 in the valleys, and 1 to 3 across the Lake Erie shoreline.

Lake effect snow will setup later on Sunday and last through Monday, maybe producing another inch or two on the hills by Tuesday morning.

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