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Boston Weather: 45.0°F | Overcast

Weather: Heat Relief a Day Away

By Greg Lawson
STAFF METEOROLOGIST -- Yesterday the National Hurricane Center announced the formation of Subtropical Storm Gustav just off the coast of the Carolinas. Gustav is “subtropical” as opposed to “tropical” because he formed fairly far north and lacks the signature warm-core that most tropical disturbances exhibit; most of our typical weather bearers are cold-core storms. Still, strong organized convection has been observed within the storm and his winds are strong enough to be classified as tropical storm strength. Gustav is currently moving slightly towards the Outer Banks, but early forecasts agree that he will certainly recurve out to sea. Landfall seems unlikely, though many coastal communities will surely feel his effects with higher seas and associated rain and wind.

But we won’t have to worry about Gustav until Wednesday. First we’ll have to contend with today’s very warm, humid conditions and the cold front due to roll through tonight. It will approach from the northwest, and will bring partly to mostly cloudy skies. Look for cooler temperatures and strong, gusty winds. Skies will clear up and the air will warm up as the week ends and a high pressure system builds into the area.

Extended forecast

Today: Hot and muggy. Mostly clear skies. Southwesterly winds. High of 90°F (32°C).

Tonight: Warm and muggy. Clouds arriving later. Low of 68°F (20°C).

Wednesday: Cooler and cloudy. Gusty winds. High of only 71°F (22°C). Nighttime low near 50°F (10°C).

Thursday: Still cool with clearer skies and lighter winds. High in the low to mid-70s F (22-24 C). Lows in the upper 50s (14-16 C).

Friday and beyond: Gradual warming with clear skies. Look for a beautiful weekend!