NWS Special Weather Statement (Grayson County)

Current Conditions
Twin Co. Airport

Temp: 23.9°F

Forecast Last Updated at Wednesday, December 11, 2019 at 5:13AM

Early Clouds, Then Clearing; Sunshine Returns

A cold front passed through western VA yesterday ushering in snow showers and flurries overnight with much colder air under gusty northwest winds. That front settles along the coast today while high pressure builds into the mountains from the west. Flurries ended early this morning, but we keep the gusty northwest winds with diminishing clouds as we dry out through the day. Winds die down tonight with temperatures dropping into the 20’s across the region. Thursday will be another nice, but chilly, day with lots of sun. Rain returns to the forecast on Friday with a brief period of freezing rain possible early.

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Wednesday Hi: 36 Lo: 24 Mostly sunny after AM clouds; Colder; NW Wind 10-15 mph

Thursday Hi: 39 Lo: 27 Mostly clear; Chilly; Increasing clouds overnight; SE wind 5-10 mph

Friday Hi: 40 Lo: 32 Cloudy; Chilly; Widely scattered light rain, could begin with brief period of freezing rain; E-SE wind 5-10 mph

Saturday Hi: 48 Lo: 37 Cloudy; Spotty light rain early, diminishing mid-day Sat; Tad milder

Sunday Hi: 47 Lo: 35 Mostly cloudy; Seasonable temperatures; Cannot rule out a stray shower

Further Out

Monday - Mostly cloudy; Spotty light rain or drizzle possible; High in the mid 40s; Low in the upper 30s
Tuesday - Cloudy; Widely scattered light rain; Milder; High in the lower 50s; Low in the upper 20s

Forecast Discussion

Yesterday’s cold front lingers along the eastern seaboard and washes off the weather map later this evening. Colder high pressure builds across the TN Valley into the OH Valley and Mid-Atlantic through the afternoon and into Thursday. Sunshine returns today and this colder air helps to dry things out. The high shifts over New England late Thursday with one more day of ample sunshine.

A wedge pattern develops across the Mid-Atlantic and Southeast overnight Thursday and into Friday thanks to the high centered over New England. Moisture moves into the Southeast Thursday night from developing low pressure along the Gulf Coast and overruns the cool high pressure at the surface. This allows for increasing clouds overnight Thursday with rain moving into our neck of the woods Friday morning. In fact, temperatures could be cold enough in spots to support a brief period of freezing rain before transitioning to all rain as warmer air moves in Friday.

The low pressure moves through the Southeast and into the Mid-Atlantic for Saturday. We’ll have lingering clouds and widely scattered rain under milder temperatures. An upper level disturbance swings out of the Great Lakes into the OH Valley Sunday keeping clouds in the forecast for the day. Most will stay dry, however, there could be a few isolated rain showers around through Sunday.

Temperatures remain seasonable into Monday and Tuesday. Meanwhile, low pressure develops over the Lower MS Valley Monday, then quickly moves across the OH Valley Tuesday and into the eastern Great Lakes before visiting the Northeast Tuesday night. Isolated (mostly PM) rain showers are a good bet with clouds Monday. For Tuesday, as the low moves through the OH Valley, we’ll have widely scattered rain and lots of clouds.

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