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Eye on the Sky

October 20, 2017

Detailed Forecast

Today

Mostly sunny and breezy this afternoon. Valley highs in the mid to upper 60s south, and low to mid 60s north, with some upper 50s near the Vermont/Québec border. Northwest winds 10 to 15 mph, gusting to 25 mph from the Green Mountains eastward, diminishing west.

Tonight

Mostly clear with areas of valley fog. Lows mainly from the upper 30s to lower 40s, except upper 40s in the Champlain and St. Lawrence Valleys, and around 30 in the cooler hollows northeast. West to northwest winds around 10 mph in the evening, then diminishing, except turning becoming south 5 to 10 mph after midnight west of the Greens.

Saturday

Mostly sunny after any valley fog dissipates, with patches of thin, high level cloudiness in the afternoon. Highs in the upper 60s to lower 70s north, low to mid 70s south. Light west winds east of the Green Mountains, southwest 5 to 10 mph west of the Greens.

Saturday Night

Mainly clear, with some patchy high clouds and areas of valley fog. Lows mainly in the mid to upper 40s, except lower 50s in the Champlain and St. Lawrence Valleys, and some upper 30s in the cooler mountain hollows northeast. South to southwest winds 10 mph or less from the Green Mountains westward, and light and variable in the east.

Significant/Hazardous Weather

The potential for wild fires is enhanced today, as very dry air, a moderate northwest breeze, and lack of rainfall combine to make fallen leaves and drying grass extremely dry and susceptible to rapid fire growth. Officials are discouraging any open outdoor burning.

Extended Forecast

Today

Mostly sunny and breezy this afternoon. Valley highs in the mid to upper 60s south, and low to mid 60s north, with some upper 50s near the Vermont/Québec border. Northwest winds 10 to 15 mph, gusting to 25 mph from the Green Mountains eastward, diminishing west.

Tonight

Mostly clear with areas of valley fog. Lows mainly from the upper 30s to lower 40s, except upper 40s in the Champlain and St. Lawrence Valleys, and around 30 in the cooler hollows northeast. West to northwest winds around 10 mph in the evening, then diminishing, except turning becoming south 5 to 10 mph after midnight west of the Greens.

Saturday

Mostly sunny after any valley fog dissipates, with patches of thin, high level cloudiness in the afternoon. Highs in the upper 60s to lower 70s north, low to mid 70s south. Light west winds east of the Green Mountains, southwest 5 to 10 mph west of the Greens.

Saturday Night

Mainly clear, with some patchy high clouds and areas of valley fog. Lows mainly in the mid to upper 40s, except lower 50s in the Champlain and St. Lawrence Valleys, and some upper 30s in the cooler mountain hollows northeast. South to southwest winds 10 mph or less from the Green Mountains westward, and light and variable in the east.

Sunday

Partly to mostly sunny and warm. Highs in the low to mid 70s. South to southwest winds increasing to 10 to 15 mph, gusting to 25 mph west of the Greens in the afternoon.

Sunday Night

Partly cloudy. Lows in the mid 40s to mid 50s, coolest east.

Monday

Partly sunny, with clouds increasing in the afternoon. Highs in the upper 60s to low 70s.

Monday Night

Becoming mostly cloudy. A rising chance of showers west to east. Mild. Lows in the 50s.

Tuesday

Mostly cloudy, with showers likely from the Green Mountains west, and an increasing chance east. Highs in the upper 60s to low 70s.

Significant/Hazardous Weather

The potential for wild fires is enhanced today, as very dry air, a moderate northwest breeze, and lack of rainfall combine to make fallen leaves and drying grass extremely dry and susceptible to rapid fire growth. Officials are discouraging any open outdoor burning.

Recreational Forecast

General:

Mostly sunny, breezy, and cooler. Highs in the upper 50s to mid 60s, coolest over the higher terrain north. Winds northwest 10 to 15 mph, gusting to 25 mph from the Green Mountains east, decreasing this afternoon.

Brief:

Some periods of clouds yesterday afternoon and evening were all that a moisture-starved cold front could muster, as it tracked southeast through the region last night, now wading into the New England coastal waters, where it will continue quietly out to sea, introducing a small bubble of high pressure extending from southeast Ontario north along the Quebec border. This has cleared our skies, and shifted our winds to the northwest, cooling temperatures several degrees from yesterday, giving us some upper 50s to mid 60s today, and mid 30s to mid 40s Saturday morning. As we head into the weekend, this high will blend in with warmer high pressure to our south over the southern Appalachians, both of them building northeast over us, leading lots of sunshine, and a warming trend through the weekend. The mild weather will last into next week, though showers will be increasing, part of a transition in the weather pattern that could bring cooler, more seasonable weather later in the week.

Winds:

Winds today becoming northwest 10 to 15 mph, gusting to 25 mph, with waves on the open waters of Lake Champlain 1 to 3 feet. Overnight, winds from the northwest this evening, diminishing to light and variable overnight, turning to the south late west of the Green Mountains, with waves on the open waters of Lake Champlain subsiding to 1 foot or less. On Saturday, light winds, becoming south near 10 mph west of the Green Mountains, with waves on the open waters of Lake Champlain 1 to 2 feet. Sunday's outlook calls for south to southwest winds near 10 mph.

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

Mountain:

The summits today will enjoy another sunny day, except for clouds in and out across the Presidential Range in NH this morning, then clearing. Temperatures will be cooling, as winds become northwest. The weekend starts with a continuation of the fair weather, which means lots of sunshine Saturday, west to northwest winds decreasing, and quite mild. Remaining mild on Sunday, with a mix of sun and clouds, and moderate southwest winds.

Winds Today Saturday Sunday
2000ft NW 15 to 25 mph NW 15 > W 10 mph SW 10 to 25 mph
4000ft NW 20 to 35 mph WNW 25 > 15 mph SW 20 to 30 mph
6000ft NW 55 to 70 mph WNW 55 > 35 mph SW 25 to 40 mph
Temperatures Today Saturday Sunday
2000ft 55 N/62 S 62 NE/68 SW upper 60s
4000ft near 50 58 NE/ 64 SW 60s
6000ft near 40 low 50s 50s

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