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Eye on the Sky

January 20, 2019

Detailed Forecast

Today

***WINTER STORM WARNING THROUGH LATE THIS AFTERNOON***
Snow, heavy at times, mixed with sleet south of Rt. 4, tapering to snow showers southwest to northeast this afternoon. Additional snow after 7 AM, 3 to 6 inches in the St. Lawrence Valley and Adirondacks, south of Rt. 4, and south of I-89 in NH, 6 to 10 inches north of Rt. 4, and north of I-89 in NH. Highs in the single numbers to low teens north, and teens to low 20s south, falling this afternoon. East to northeast winds becoming more northerly, increasing to 10 to 25 mph, gusting to 30 mph this afternoon.

Tonight

Snow showers in the north and mountains. Partial clearing in southern valleys. Blustery and quite cold. Lows 5 to 15 below north, 20 below in the Adirondacks, and zero to 10 below south. North winds becoming northwest 10 to 20 mph, gusting to 30 mph.

Monday

MLK Jr. Day: Some morning sun in southern valleys, then lots of clouds. Mostly cloudy through the north and mountains, with scattered to numerous snow showers. Windy and bitterly cold. Highs near zero north, and single digits above zero south. Northwest winds 10 to 20 mph, gusting to 35 mph.

Monday Night

Any mountain snow showers ending. Becoming mostly clear. Quite cold. Lows 5 to 15 below, near 20 in the northern mountains. Northwest winds 10 to 20 mph, gusting to 35 mph in the evening, decreasing after midnight.

Significant/Hazardous Weather

Heavy snow this morning, along with some sleet near and south of the MA border, is creating difficult, hazardous travel conditions. Snow will decrease west to east this afternoon, with storm totals of 8 to 16 inches expected. Increasing north winds this afternoon through Monday will cause blowing and drifting, poor visibilities, and continued difficult driving conditions. Temperatures will fall below zero, resulting in very low wind chill values.

Extended Forecast

Today

***WINTER STORM WARNING THROUGH LATE THIS AFTERNOON***
Snow, heavy at times, mixed with sleet south of Rt. 4, tapering to snow showers southwest to northeast this afternoon. Additional snow after 7 AM, 3 to 6 inches in the St. Lawrence Valley and Adirondacks, south of Rt. 4, and south of I-89 in NH, 6 to 10 inches north of Rt. 4, and north of I-89 in NH. Highs in the single numbers to low teens north, and teens to low 20s south, falling this afternoon. East to northeast winds becoming more northerly, increasing to 10 to 25 mph, gusting to 30 mph this afternoon.

Tonight

Snow showers in the north and mountains. Partial clearing in southern valleys. Blustery and quite cold. Lows 5 to 15 below north, 20 below in the Adirondacks, and zero to 10 below south. North winds becoming northwest 10 to 20 mph, gusting to 30 mph.

Monday

MLK Jr. Day: Some morning sun in southern valleys, then lots of clouds. Mostly cloudy through the north and mountains, with scattered to numerous snow showers. Windy and bitterly cold. Highs near zero north, and single digits above zero south. Northwest winds 10 to 20 mph, gusting to 35 mph.

Monday Night

Any mountain snow showers ending. Becoming mostly clear. Quite cold. Lows 5 to 15 below, near 20 in the northern mountains. Northwest winds 10 to 20 mph, gusting to 35 mph in the evening, decreasing after midnight.

Tuesday

Partly sunny, and not as frigid. Highs in the teens north, near 10 northeast, and close to 20 south. Winds northwest 10 to 15 mph, diminishing to less than 10 mph in the afternoon.

Tuesday Night

Increasing clouds, with a rising chance of snow showers west and north. Not as cold. Lows 0 to 10 above north, 10 to 15 south, rising later at night.

Wednesday

Mostly cloudy with snow showers, mixing with rain south, and some northern valleys. Highs from the low 30s to upper 30s north to south.

Wednesday Night

Snow or rain showers. Lows in the upper 20s to low 30s north to south.

Thursday

Mostly cloudy with snow or rain showers. Highs in the 30s north, to near 40 south.

Significant/Hazardous Weather

Heavy snow this morning, along with some sleet near and south of the MA border, is creating difficult, hazardous travel conditions. Snow will decrease west to east this afternoon, with storm totals of 8 to 16 inches expected. Increasing north winds this afternoon through Monday will cause blowing and drifting, poor visibilities, and continued difficult driving conditions. Temperatures will fall below zero, resulting in very low wind chill values.

Recreational Forecast

General:

***WINTER STORM WARNING THROUGH LATE THIS AFTERNOON***
Snow, heavy at times, mixed with sleet south of Rt. 4, tapering to snow showers southwest to northeast this afternoon. Additional snow after 7 AM, 3 to 6 inches in the St. Lawrence Valley and Adirondacks, south of Rt. 4, and south of I-89 in NH, 6 to 10 inches north of Rt. 4, and north of I-89 in NH. Highs in the single numbers to low teens north, and teens to low 20s south, falling this afternoon. East to northeast winds becoming more northerly, increasing to 10 to 25 mph, gusting to 30 mph this afternoon.

Brief:

Snow, moderate to heavy, continues to fall this morning, though it will start to let up this afternoon, after a foot or more in many places. Some sleet may mix in for a time south of Rt. 4, reducing accumulations there, and very dry, arctic air entrenched in the St. Lawrence Valley also hampering the heaviest snow. The storm’s track will take it through southern New England, just south of Boston this afternoon, allowing the snow to taper to snow showers mid to late afternoon. Once the storm moves east of New England this afternoon, winds will increase from the north, causing considerable blowing and drifting snow, while pulling arctic air behind it for a bitterly cold night, lasting through Monday. This will be bitterly cold, with temperatures near zero during the day tomorrow, and well below zero across the mountains. Winds gusting to 35 mph will make it feel even colder. A small area of high pressure then builds in Monday night through Tuesday morning, clearing the skies, decreasing the winds, and sending temperatures into the single numbers and teens below zero, with some 20s below in the cold spots. Temperatures will rebound Tuesday into Wednesday, while a much weaker storm lifts through the Great Lakes and just to our north Wednesday, bringing some snow showers, mixing with rain showers as readings warm into the 30s.

Winds:

Winds today from the east to northeast, becoming more northerly, increasing to 10 to 25 mph, gusting to 30 mph this afternoon. Tonight, north winds becoming northwest 10 to 25 mph, gusting to 35 mph. On Monday, northwest winds 10 to 20 mph, gusting to 35 mph. Tuesday’s outlook calls for northwest winds 10 to 15 mph, diminishing in the afternoon.

For more details on Lake Champlain, go to: http://forecast.weather.gov/product.php?site=BTV&product=REC&issuedby=BTV

Mountain:

Snow will continue heavy at times through midday, then decrease this afternoon, with winds shifting from east to north, causing considerable blowing and drifting, keeping summits obscured in clouds, snow, and blowing snow. Temperatures in the teens south, to near zero north, falling to below zero north this afternoon. Monday, MLKJr. Day, features summits in and out of the clouds with snow showers numerous north, scattered south. Strong northwest winds and temperatures in the the single numbers and teens below zero will create very low wind chill values. Tuesday’s outlook calls for sunshine, lighter winds, and moderating temperatures.

Winds Today Monday Tuesday
2000ft NE 40>N 30 mph NW 30>40 mph NW 30>10 mph
4000ft E>NNE 25 to 40 mph N>NW 35 to 50 mph NNW 50>NW 20 mph
6000ft SE 45>light>N 35 mph N 60 > 80 mph N 80>NW 60 mph
Temperatures Today Monday Tuesday
2000ft 0 N/15 S 8B N/0 S 10 NE/15 SW
4000ft 5A N/15A S, falling 15B N/5B S upper teens
6000ft near 10A, falling near 15B near 10A

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