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Eye on the Sky

August 21, 2017

Detailed Forecast

Today

Increasing clouds. Chance of afternoon showers and thunderstorms east of the Greens, a rising chance with a severe storm possible west. Highs in the low to mid 80s, except mid to upper 80s in the valleys southeast. Winds from the south to southwest at 10 to 15 mph.

Tonight

Mostly cloudy, with showers and thunderstorms likely. Some storms may contain strong winds and heavy downpours. Mild and muggy. Lows in the 60s. South to southwest winds 10 to 15 mph, gusting to 25 mph.

Significant/Hazardous Weather

Thunderstorms Tuesday afternoon and evening could be potentially strong, with gusty winds and heavy rain.

Extended Forecast

Today

Increasing clouds. Chance of afternoon showers and thunderstorms east of the Greens, a rising chance with a severe storm possible west. Highs in the low to mid 80s, except mid to upper 80s in the valleys southeast. Winds from the south to southwest at 10 to 15 mph.

Tonight

Mostly cloudy, with showers and thunderstorms likely. Some storms may contain strong winds and heavy downpours. Mild and muggy. Lows in the 60s. South to southwest winds 10 to 15 mph, gusting to 25 mph.

Wednesday

Showers diminishing from west to east in the morning, then chance of a shower over the high terrain in the afternoon. Cooler and less humid. Highs in the low to mid 70s north, mid 70s to around 80 south. Winds becoming west around 10 mph.

Wednesday Night

Partly cloudy. Lows in the 50s, some upper 40s in the cooler valleys.

Thursday

Mostly sunny far southern valley floors. Otherwise partly sunny, with a few brief, passing showers near the northern mountains. Highs from the mid 60s to mid 70s north to south.

Thursday Night

Partly cloudy across the northern mountains, and becoming clear elsewhere. Lows in the low to mid 50s, a few upper 40s northeast.

Friday

Sunshine, mixed with a few clouds. Highs in the upper 60s to mid 70s.

Significant/Hazardous Weather

Thunderstorms Tuesday afternoon and evening could be potentially strong, with gusty winds and heavy rain.

Recreational Forecast

General:

Mostly sunny. Highs in the low to mid 80s, mid to upper 80s in the warmer valleys west of the Green Mountains. West to southwest winds 5 to 15 mph.

Brief:

We’re heading for a classic late August day, starting with a comfortable morning, a few areas of fog in the river valleys, and temperatures in the 50s to low 60s. With lots of sunshine, thermometers will climb to the low and mid 80s, closer to 80 northeast, and some upper 80s in the warmest valleys west. That sunshine, mixed with a few high clouds this morning, will decrease this afternoon – not because of any clouds – but the partial solar eclipse starting near 1:25, and reaching a maximum of 65 percent northeast, 70 percent southwest near 2:35, and ending a little before 4 o’clock. High pressure this morning along the mid-Atlantic coast, moving east into the Atlantic, will keep us mostly clear through tonight, as well as deflect a weather front to our north and keep it there. However, moving through the Great Plains and into the upper Mississippi Valley is a developing storm system – spoiling some the eclipse viewing there – but tracking through the Great Lakes tomorrow, and to our north tomorrow night. That should sweep a cold front in our direction, with increasing southwest winds bringing very warm and increasingly humid air into the region later today through Tuesday. As the front gets clouds, showers and thunderstorms will develop tomorrow afternoon from west to east, continuing into Tuesday evening. A few storms could become strong, with gusty winds and heavy downpours. As the front moves to the east Wednesday morning, most showers will end as skies begin to clear, and fresh west winds bring cooler and less humid air into the area. A few stray showers are possible in the afternoon over the higher terrain north, but overall, a stretch of sunny, dry weather goes from Wednesday afternoon and into the upcoming Labor Day weekend.

Winds:

Winds today from the south to southeast 5 to 15 mph, with waves on the open waters of Lake Champlain near 1 foot. Winds overnight continuing from the south 5 to 15 mph, decreasing after midnight, with waves on the open waters of Lake Champlain near 1 foot. Winds on Tuesday from the south increasing to 10 to 15 mph, gusting to 25 mph, with waves on the open waters of Lake Champlain building to 1 to 3 feet. Wednesday's outlook calls for winds from the west 10 to 15 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:

The summits today will enjoy lots of sunshine, mixed with some high clouds. Moderate west winds will steer temperatures in the 60s and 70s on the summits. On Tuesday, clouds will lower onto the summits from west to east, as showers increase, especially in the afternoon. Winds becoming southwest, increasing during the afternoon, and temperatures warm, perhaps a degree or two warmer. The outlook for Wednesday starts with a lot of clouds, then partial clearing, winds turning to the west, and temperatures several degrees cooler.

Winds Today Wednesday
2000ft S 15 > 30 mph W 10 to 20 mph
4000ft SW 15 > 35 mph W 15 to 25 mph
6000ft SW 25 > 50 mph W 55 > 35 mph
Temperatures Today Wednesday
2000ft 78 NE/82 SW 70 N/76 S
4000ft 70s near 60
6000ft 60s near 50

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