Snow showers today as cold, breezy weather continues

finger lakes weather forecast tuesday november 17 2020 lake effect snow breezy cool
After widespread snow showers this morning, on and off lake effect will develop for the rest of the day and overnight. [Photo by Gwen Moshier]

Lake Effect Snows

A reinforcing shot of cold air will settle into the Finger Lakes today in the wake of a small disturbance passing through this morning.

Light snow showers, mixing with rain in some areas, are widespread across the region this morning, associated with the disturbance. A pool of cold air aloft is situated to our northwest over Canada and will make its way into our region.

The influx of colder air will improve conditions for lake effect snow gradually. For most of the daytime hours, the lake effect will be disorganized, with on and off flurries and a few heavier bursts. Tonight, the lake effect will organize into narrow bands.

Snow accumulations during the daytime hours will be limited to a quick coating on grassy surfaces this morning and during some heavier bursts later on. With highs in the mid and upper 30s, any accumulations will not last too long, and road conditions will be just wet.

Tonight, temperatures will drop back into the 20s, making it easier for the snow to accumulate. Localized amounts up to two or three inches will be possible if one of the bands remains in place for a prolonged period. Most areas will probably see a coating at most, though.

Winds today will be gusty from the northwest, with speeds of 10-15 mph and gusts around 30 mph.

A few snow showers will linger into Wednesday morning, but the atmosphere will become less favorable for lake effect as the morning goes on. Outside of a small chance for some late sun, the rest of Wednesday will just be cloudy and cool.

Look for highs to range from the upper 20s in higher elevations to the low and mid 30s elsewhere. Northwest winds will still gust over 25 mph at times before dissipating late.

finger lakes weather 7-day forecast tuesday november 17 2020
This graphic represents an average over the entire Finger Lakes region. Localized variations should be expected. Click to enlarge.

finger lakes weather 7-day forecast tuesday november 17 2020

Warming Trend

Winds will turn to the south Wednesday night, leading to a quick turn around in temperatures.

Much of Wednesday night will be in the mid and upper 20s, but some areas may push back into the low 30s by dawn Thursday. South winds will gust as high as 30 mph during the day Thursday, driving temperatures into the low and mid 50s for the northwestern half of the region and the mid and upper 40s for the southeastern half.

No rain is expected on Thursday, but a deck of clouds high in the atmosphere will filter the sunshine.

Friday has a better chance for sunshine, though it, too, will have patches of clouds to contend with. Again, no rain is expected.

Winds will turn to the southwest for Friday, still gusting over 25 mph at times. High temperatures will range from 55 to 60 degrees for most of the region, though a few places will likely get above 60 degrees.

A west-to-east frontal boundary will develop this weekend as a new area of high pressure builds into the Great Lakes from Canada. Winds will turn to the north ahead of this high, pushing the warm weather back south.

Low pressure will develop along this boundary over the Mid-Mississippi Valley and make its way northeast toward our region late in the weekend.

This will all add up to a cooler mix of sun and clouds on Saturday, with highs in the 40s. Sunday will also probably be in the 40s with some rain showers from time to time.

The warmest part of the weekend may come Sunday night if the front lifts north through the region. Temperatures may be around 50 before cold air returns for Monday.

This weather system is not likely to bring a large amount of precipitation to the region, and much of next week looks fairly quiet with typical late-November temperatures.

More Information:

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Follow Meteorologist Drew Montreuil:
Meteorologist Drew Montreuil has been forecasting the weather in the Finger Lakes region since 2006 and has degrees in meteorology from SUNY Oswego (B.S. with Honors) and Cornell (M.S.). Drew and his wife have four young boys. When not working or playing with the boys, he is probably out for a run through the countryside.