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Eye on the Sky

July 20, 2017

Detailed Forecast

Today

Partly to mostly cloudy this afternoon. Showers likley in the Upper Hudson Valley; showers and and thunderstorms likley near the Vermont/Québec border, slight chance elsewhere. Highs in the upper 70s to mid 80s north, mid to upper 80s south. Winds generally west at 5 to 10 mph.

Tonight

Chance of evening showers and thunderstorms south and east; slight chance north and west. Partly cloudy with areas of valley fog late. Lows in the low to mid 60s, with mid 50s to lower 60s northeast and in the Adirondacks, and mid to upper 60s in the Champlain and Hudson Valleys. Winds becoming light and variable.

Friday

Mostly sunny. An isolated shower or thunderstorm possible, mainly over high terrain. Highs in the upper 70s to mid 80s north, and mid to upper 80s south. Winds becoming west to northwest at 5 to10 mph in the afternoon.

Friday Night

Partly cloudy. Lows in the low to mid 60s, except mid 50 to around 60 northeast and in the Adirondacks. Northwest winds around 10 mph early, becoming light and variable after midnight.

Significant/Hazardous Weather

None.

Extended Forecast

Today

Partly to mostly cloudy this afternoon. Showers likley in the Upper Hudson Valley; showers and and thunderstorms likley near the Vermont/Québec border, slight chance elsewhere. Highs in the upper 70s to mid 80s north, mid to upper 80s south. Winds generally west at 5 to 10 mph.

Tonight

Chance of evening showers and thunderstorms south and east; slight chance north and west. Partly cloudy with areas of valley fog late. Lows in the low to mid 60s, with mid 50s to lower 60s northeast and in the Adirondacks, and mid to upper 60s in the Champlain and Hudson Valleys. Winds becoming light and variable.

Friday

Mostly sunny. An isolated shower or thunderstorm possible, mainly over high terrain. Highs in the upper 70s to mid 80s north, and mid to upper 80s south. Winds becoming west to northwest at 5 to10 mph in the afternoon.

Friday Night

Partly cloudy. Lows in the low to mid 60s, except mid 50 to around 60 northeast and in the Adirondacks. Northwest winds around 10 mph early, becoming light and variable after midnight.

Saturday

Sunshine filtering through variable high clouds. An isolated mountain shower possible north. Less warm and less humid, with highs from the mid 70s to around 80 north, and upper 70s to mid 80s south. West winds 5 to 10 mph.

Saturday Night

Partly cloudy. More clouds from southern VT into the Berkshires, with a chance of a shower. A little cooler and less humid. Lows in the 50s east, upper 50s to low 60s west.

Sunday

Partly sunny. Chance of showers or a thunderstorm mainly south. Highs in the 70s.

Sunday Night

Mostly cloudy, with a chance of showers. Lows in the 50s east, upper 50s to low 60s west.

Monday

Mostly cloudy, with a chance of showers. Highs in the upper 60s to low 70s north, in the 70s south.

Significant/Hazardous Weather

None.

Recreational Forecast

General:

Sun giving way to periods of clouds midday and afternoon. A slight chance of a spotty, isolated afternoon shower or thunderstorm, mainly over the higher terrain, and near Lake Champlain. Highs in the 80s, from the upper 80s in the warmer valley south, to near 80 over the higher terrain north. Winds light, becoming west 10 mph or less in the afternoon.

Brief:

Another warm summer day on the way, though not what you might consider perfection. Some patches of fog this morning will burn off, and we’ll start with some sunshine, but similar to yesterday, periods of clouds will move in during the afternoon. They are the debris from thunderstorms that developed well to our west over the Great Lakes, which means they’ll mostly be high and mid-level clouds. At the same time, the warm air and moderate amounts of humidity in place will lead to a few spotty, isolated showers or a thunderstorm. Without any particular weather system to create them, localized wind and terrain will give warm air an extra lift up, barely enough, so only one or two showers are expected. Overnight, a weak storm over the Great Lakes, and even warmer air farther south will instigate a few showers and thunderstorms, mostly to our south and west, but close enough to perhaps affect southern areas, especially near and south of the MA border. Quiet weather follows tomorrow, with a developing west to northwest airflow around a storm in northern-most Quebec. This should very gradually bring cooler and less humid air into the region Friday into Saturday. By Sunday, the warmer, more humid air attempts a comeback, with increasing clouds, and a rising chance of scattered showers and thunderstorms in the afternoon and evening, especially west and south.

Winds:

Winds today becoming west near 10 mph, with waves on the open waters of Lake Champlain less than 1 foot. Winds this evening from the west less than 10 mph, diminishing to light and variable, with waves on the open waters of Lake Champlain less than 1 foot. Winds on Friday light, becoming west to northwest near 10 mph, a few gusts to 15 mph, with waves on the open waters of Lake Champlain near 1 foot. Saturday's outlook calls for light winds, mainly west less than 10 mph.

***winds and waves may be higher in the vicinity of thunderstorms***

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

Mountain:

Sunshine across the summits this morning, then increasing afternoon clouds, especially north, with a slight chance of an isolated, stray shower or thunderstorm, while it remains partly sunny south. Winds light from the west to northwest, and temperatures the same or slightly cooler. Friday features variable clouds and sun, as northwest winds increase, and temperatures cool a bit. The weekend outlook starts with partly sunny and cooler conditions Saturday, a light northwest wind, followed by a sunny start to Sunday, giving way to building afternoon clouds, and a rising chance of showers or a thunderstorm in the late afternoon and evening. Winds becoming southwest, and temperatures continued seasonably cool.

Winds Today Friday Saturday
2000ft W 5 to 10 mph NW 10 to 25 mph W near 10 mph
4000ft W 5 to 15 mph NW 15 to 30 mph W 10 to 15 mph
6000ft W 20 to 30 mph NW 30 to 45 mph NW 45 > 30 mph
Temperatures Today Friday Saturday
2000ft 77 N/82 S 76 N/82 S 70 N/77 S
4000ft upper 60s 60s low 60s
6000ft upper 50s 50s low 50s

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