Nov 12, 2010: Rain On Wednesday, Then Colder

Today was another sunny day with warming temperatures, peaking in the upper 50s to mid 60s across most of the area. Tomorrow should be even warmer, however afterwards things will be turning more stormy and colder.

Tomorrow’s Outlook:

Tomorrow’s will be a very mild day, potentially one of, if not the warmest days of the month. With a NNE wind and a warmer air mass, high temperatures will rise into the upper 50s to lower 60s inland and in the lower to mid 60s for the rest of the area.

Looking at the rest of the region, the warmest temperatures will be located further west as a cold front related to a storm in the Midwest will start to move east through the Ohio Valley. The same storm will also be responsible for over 6 inches of snow in some places in Minnesota and NW Wisconsin.

Sunday – Monday: Dry, But Slightly Cooler With More Clouds

On Sunday, the wind direction is expected to change to the southeast as the cold front approaches, which will lead to slightly cooler temperatures, especially along the coast. High temperatures will still reach the lower 60s in the central and western parts of the area though.

On Sunday night, increasing cloud cover is expected ahead of the cold front, with Monday bringing mostly cloudy skies, a south wind, and the risk of an isolated shower or two as the front nears the area. High temperatures will be in the lower to upper 50s across the area.

The cold front, however, will not be able to advance further east. It is then expected to stall near the area, creating the set up for Tuesday and Wednesday.

Tuesday-Wednesday: Rain, Potentially Heavy Along The Coast

Tuesday will bring cloudy skies to the area, meanwhile a low pressure forming over the SE US will lead to rain entering the area in the afternoon. As the low pressure intensifies, it will continue to move NE, and should end up near NYC by Wednesday morning. Rainfall will intensify late on Tuesday evening, and fall as moderate, potentially heavy rain, for most of the overnight hours into Wednesday morning. As the storm continues to quickly move northeast, the rain will end from SW to NE by the late morning to early afternoon hours.

By the time that the storm ends, at least 3/4 to 1.5 inch of rain are possible, with the heaviest amounts generally along the Interstate 95 corridor. It is possible that a Rain Watch, a 30% to 70% chance of rainfall amounts over 1 inch, may be issued for the area.

Longer Range: Colder Weekend

There is still a lot of uncertainty with the smaller details for the weekend, however we are likely looking at an Alberta Clipper entering the Northeast on Thursday, which may then transfer its energy to another low pressure off the coast. Where this happens is still uncertain, however at this time, what is likely is that widespread snow showers are possible across the Northeast, potentially accumulating, with much colder temperatures for the area by Friday, with high temperatures potentially returning into the 40s. Stay tuned for more details on this time frame.

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