Tuesday, May 27, 2008

Useasonably Cool Air Approaching

As Kira mentioned, the warmth will be gone after tonight. I'm sure summer weather lovers had a tough time heading back to the office today with highs reaching the 80s again. The cold front is slated to come through overnight tonight and replace us with a much cooler air mass. I just checked the recent observations around the mid-Atlantic and Northeast and I am impressed at the temperature gradient. Currently it is 79 degrees in Norfolk, VA and 48 degrees in Binghamton, NY. The front right now looks to be in Northern MD and is closing in on Delmarva. A nice line of showers and storms has developed along the front and is pushing Southeast through Northern Delaware and the upper MD shore right now. No storms are severe at the moment but are capable of strong wind gusts and heavy downpours. I'm also impressed at the dew points right now there are in the 60s to low 70s, indicating a very moist atmosphere. When dew points are in the 70s, that is when it's very uncomfortable. It's only late May so the prolonged period of humid days will be arriving soon.

Most of the showers should end by morning as the front moves offshore but there still may be a shower over the Southern viewing area. At this point, I do expect clouds lingering in the AM for many areas but with increasing sunshine in the afternoon. One fly in the ointment would be if the cold front slows down or even stalls overnight. This happens usually in the Summer months, especially over the Carolinas but can occur over Delmarva. If this happens expect a prolonged period of clouds with a better chance of showers over the Southern viewing areas. Highs on Wednesday will be well below average in the upper 60s. But if you want 80s, don't worry they will be back for the weekend.

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