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Eye on the Sky

May 4, 2016

Detailed Forecast

Today

Mostly cloudy, with widely scattered showers. A few breaks of afternoon sun possible in the St. Lawrence Valley. Highs in the low to mid 50s east, mid to upper 50s west, around 60 in the St. Lawrence Valley. Winds light, becoming east to northeast less than 10 mph.

Tonight

Periods of clouds, with a few scattered showers, especially south in the evening. Some partial clearing north. Lows in the low to mid 40s. Light east to northeast winds in northern areas, 5 to 10 mph in the south.

Significant/Hazardous Weather

None.

Extended Forecast

Today

Mostly cloudy, with widely scattered showers. A few breaks of afternoon sun possible in the St. Lawrence Valley. Highs in the low to mid 50s east, mid to upper 50s west, around 60 in the St. Lawrence Valley. Winds light, becoming east to northeast less than 10 mph.

Tonight

Periods of clouds, with a few scattered showers, especially south in the evening. Some partial clearing north. Lows in the low to mid 40s. Light east to northeast winds in northern areas, 5 to 10 mph in the south.

Friday

Mostly cloudy. Chance of showers south; slight chance north. Highs in the upper 50s to lower 60s. Northeast winds less than 10 mph.

Friday Night

Periods of clouds, with a few scattered showers, especially south. Lows in the 40s.

Saturday

Mostly cloudy with scattered showers, especially south. Highs in the upper 50s to mid 60s.

Saturday Night

Becoming mostly cloudy, with a rising chance of showers from west to east. Lows in the 40s.

Sunday

Mostly cloudy with showers likely. Highs in the mid 50s to low 60s.

Significant/Hazardous Weather

None.

Recreational Forecast

General:

Mostly cloudy, with a few scattered showers, becoming more likely south this afternoon. Cool. Highs in the low 50s east of the Green Mountains, and 50s to near 60 from the Green Mountains west. Winds light, becoming southeast less than 10 mph.

Brief:

Lots of low clouds, patches of fog, and a few stray showers are found this morning. Partial clearing did develop north last night, but clouds are returning, part of a southerly airflow that will increase the moisture and the chances of showers, especially through southern locations later this morning through this afternoon. Winds will be fairly light, mostly from the southeast, which generally brings warmer air. However, in the spring, the ocean is quite cold, and the clouds and showers will keep the sun at bay. This means another chilly day, especially east of the Green Mountains, only 50 to 55. To the west, fewer showers, and being farther from the ocean will allow readings to climb to the 50s to near 60, still on the cool side for early May.

Although temperatures are close to their average for a morning in early May, running from the mid 30s to low 40s, there is a dampness to the air that might make it seem cooler. The lack of sun, and the increasing numbers of showers will do their part to limit any warming, so that the afternoon readings will run quite a bit below the averages, which are in the 60s. Highs only in the 50s, closer to 50 through NH with more showers, and an easterly wind off the chilly Atlantic, while it edges closer to 60 west of the Green Mountains.

Helping to supply the cool air is weak high pressure in eastern Quebec, which is also helping to create to cool airflow off the ocean. The other key factor in our forecast today is a storm driving south through the Great Lakes. Its circulation is promoting a southerly airflow over us, with a disturbance in this flow tracking north from PA. Enough moisture is in place to create a few scattered showers, but the disturbance will increase the showers later this morning and afternoon, especially south, then sliding northeast tonight, with a better chance of showers south, and in NH. Meanwhile, the storm in the Great Lakes will settle into the mid-Atlantic states. One piece of it will lift northeast tomorrow night into Friday, taking some of the moisture away from us. Another piece of the storm will linger to our south Friday, then lift north and weaken Friday night into Saturday, with periods of clouds, some intervals of sun, and a few scattered showers.

Winds:

Winds today will be light, becoming southeast 5 to 10 mph. Winds from the southeast less than 10 mph this evening, becoming light and variable overnight. Winds on Thursday light, becoming east to northeast near 10 mph through NH and southern VT, lighter to the northwest. The outlook for Friday features light winds, mainly from the east less than 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 and Thursday will be mostly in the clouds, with a chance of showers, especially south today, and in NH Thursday morning. An isolated thunderstorm is possible in the Adirondacks. Clouds may lift and break in the Adirondacks Thursday afternoon. Light to moderate southeast winds today, becoming more east Thursday, with little change in temperatures. The outlook for Friday calls for periods of sunshine north, more clouds and a few scattered showers south. Winds becoming more northeast, and temperatures will inch up a few more degrees.

Winds Today Friday
2000ft ENE 10 to 15 mph NE 15 > SE 10 mph
4000ft E 10 to 25 mph NE 25 > E 15 mph
6000ft E 10 to 25 mph NE > E 20 to 35 mph
Temperatures Today Friday
2000ft 50s 50s
4000ft 40s near 50
6000ft 30s near 40