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Dense, widespread fog dissipates, advisory expires at 7 p.m.

The widespread fog that hung over Long Island all day Monday dissipated during the evening commute, the National Weather Service said.

A dense fog advisory expired at 7 p.m., the service's Upton office said.

Monday was mild, but the fog prevented the daily record high from being broken, meteorologists said. It reached 61 in Islip, but the high for the date was 63 in 2001, the service said.

Even so, the incoming warm front kept temperatures at Long Island MacArthur Airport in Ronkonkoma near the 60s for most of the morning and the early afternoon.

The flaw in the warmer conditions was a driving rain that fell well into the morning commute and was whipped by winds from the south at 20 to 35 mph with gusts up to 50 mph.

John Murray, a meteorologist at the Upton office, said windy conditions are likely to prevail through Wednesday as the warm front slowly leaves Long Island.

On Tuesday, temperatures are forecast in the mid 40s with breezy conditions once again. West winds from 10 to 15 mph are likely, with gusts as high as 26 mph.

There's a 30 percent chance of rain Tuesday night into Wednesday morning, with nighttime lows in the mid 30s

Rain early Wednesday could linger through the morning commute. The chance of precipitation is up to 90 percent, with new rainfall estimates between three-quarters of an inch and an inch.

A coastal storm is expected to affect the region Wednesday into the nighttime hours, but "uncertainty still exists" in how close to the region this storm will track, the service said.

The storm could bring a combination of snow and rain, and high winds are likely to remain with this system, according to the service.

There is a "low probability" of 6 or more inches of snow, falling Wednesday night into Thanksgiving Day, the service said.

The overnight low is expected to be around the mid 30s, and the chance of precipitation is 90 percent.

Right now, it's unlikely any snow sticks around very long; daily highs Thursday are expected to be in the low to mid 40s, the service said.

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