NWS Winter Weather Advisory (Grayson County)

Current Conditions
Twin Co. Airport

Temp: 30.0°F

Forecast Last Updated at Thursday, January 27, 2022 at 6:16PM

Chilly Thursday; Snow Returns FRI PM

A few more clouds arrive tonight and temperatures are seasonably chilly. Clouds thicken on Friday with snow showers arriving during the afternoon, with a period of steadier snow late Friday afternoon and evening. Snow showers linger into Saturday morning before skies turn clear. Accumulations will be 1-4 inches for the majority of SW Virginia, but with 4-6 inches for the Grayson Highlands and locally 6" plus for places like Mount Rogers. For details on snow accumulations, see our Snowfall Accumulation Forecast Map. Saturday will be the coldest day of the winter so far, complete with blowing and drifting of the fresh, powdery snow.

Thursday Hi: 42 Lo: 28 Partly to mostly cloudy tonight; Light south wind

Friday Hi: 38 Lo: 14 Cloudy; Snow showers developing during the afternoon with a period of steadier snow during Friday late afternoon & evening; Light NW wind increasing to 10-20 mph gusting to 35 Fri. night

Saturday Hi: 21 Lo: 11 AM snow showers; Becoming mostly clear; Very cold & windy with some blowing & drifting of snow; NW wind 10-20 mph gusting to 40

Sunday Hi: 35 Lo: 22 Partly to mostly cloudy; Not as cold by afternoon

Monday Hi: 43 Lo: 23 Mostly sunny; Moderating temperatures

Further Out

Tuesday - Mostly sunny; Uneventful start to February; High in the lower 40s; Low in the upper 20s
Wednesday - Increasing cloudiness; Rain possible Wednesday night; High in the mid 40s; Low in the upper 30s

Forecast Discussion

High pressure maintains control of our weather tonight before rapid wintry changes occur Friday afternoon. An industrial-strength upper level disturbance will push a cold front into the mountains Friday afternoon, resulting in snow shower development. The vigorous nature of this disturbance will promote a period of steadier snow Friday evening as dramatically colder air pushes into the mountains.

This upper feature will ignite ocean low-pressure off the Eastern Seaboard that will turn into a Northeast/New England blizzard on Saturday. For us, lingering backwash snow showers on Saturday will yield to mostly clear skies, but a piece of Arctic air in this cyclone’s wake will promote the coldest day of the winter-to-date.

Fortunately, some moderation will begin as early as Sunday afternoon, although a follow-up disturbance in the northwest flow aloft will generate some additional cloudiness.

Next week looks milder with generally fair weather, at least to start the workweek. A milder Pacific weather system may bring precipitation of the liquid variety by the end of this forecast cycle.

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