On and off snow Thursday and Friday

finger lakes weather forecast thursday december 6 2018 snow lake effect squall
Snow will end across the Finger Lakes early Thursday morning, but should be back by sundown. On and off snow will continue into Friday. [Photo by Joan Lockwood]

Late Day Squalls

A spray of lake effect snow across the Finger Lakes this morning will dissipate with additional snow likely late in the day.

Snow moved into the Finger Lakes during the overnight on west winds off Lake Erie. Scattered snow showers remain very early this morning but will dissipate over the next couple hours.

Winds over Lake Erie have become more southwesterly and the lake effect is reorganizing itself. The lake effect band will impact Buffalo this morning, then shift further north by midday.

This will open the Finger Lakes up for a period of dry weather from the mid-morning into the mid-afternoon. A little sunshine may even poke through at times.

A front will drop southeast across the area late this afternoon and evening, resulting in a return to snowy conditions.

For areas along and west of I-390, including Rochester, the late afternoon may become hazardous as the front interacts with the lake effect and a band of heavy snow develops.

Lighter snow is expected to the south and east across the Finger Lakes after 4 pm and continuing through the evening. A lesser squall may move through after 9 pm with a quick burst of snow.

Snow accumulations through midnight should be just an inch or two.

Winds will gust to 35 mph today in advance of the front. High temperatures will be in the mid 30s.

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Lingering Lake Effect

Behind the front, cool northwest winds will develop, resulting in a narrow light to moderate band of lake effect Friday.

This band will fluctuate in position and intensity throughout the day.

During the morning hours, the band will be in the vicinity of a Rochester to Geneva to Cortland line, starting as far north as Auburn around dawn and drifting south to Canandaigua and Ithaca by midday.

The band should weaken or even dissipate for the afternoon before redeveloping from Sodus to Skaneateles to Tully during the evening.

Most areas across the northern and eastern Finger Lakes should see an inch or two of accumulation on Friday.

Winds will become more westerly by Saturday morning. A few flurries off Lake Erie will skirt across the Southern Tier and southern Finger Lakes, mostly during the morning hours.

High temperatures Friday will be in the mid and upper 20s. Saturday will be a few degrees warmer with upper 20s and low 30s.

Quiet Next Week

High pressure will pass south, then east of the area on Sunday, bringing sunshine and highs into the upper 30s.

Monday will be cloudier, but still dry. Temperatures will cool with highs in the low to mid 30s.

Tuesday, Wednesday, and Thursday should all have varying amounts of sunshine. No precipitation is expected at this time, but it would not surprise me if a few flurries popped up here or there at some point.

Temperatures will retreat into the 20s on Tuesday, but then will warm into the 30s Wednesday with a shot at 40 degrees Thursday.

Active weather will return by the end of the week but it is much too early to say what form that weather will take.

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Meteorologist Drew Montreuil
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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.). When not forecasting, he can be found working at the local library, making goat milk soap, running until his legs burn, or playing with his three young boys.

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