June 28, 2011 Evening Update

Note: The 5-Day Forecast page was updated this morning. The next update will be posted on Wednesday afternoon.

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Short Range: Storms continue to affect New York and Virginia, with very little activity in Pennsylvania. Other than an isolated thunderstorm, most of the area will stay dry tonight.

Wednesday – Friday: This time frame will be dry, with partly sunny skies and highs in the upper 70s to mid 80s across the area.

Saturday – Tuesday: A 3-day heat wave will affect parts of the area, from Saturday, July 2, through Monday, July 4. A large ridge from the central US will move into the region bringing 850 mb temperatures near or slightly above 20 degrees celsius, especially on Sunday. There is some slight uncertainty with the temperatures, and at this time I am expecting upper 80s to lower 90s from NYC and further west from Saturday to Monday, but if the warmer case scenario verifies, mid 90s may be possible in the immediate NYC area. A cold front will move through sometime early next week, bringing a risk of showers and thunderstorms between Monday and Wednesday. More information on the heat and potential storms will be posted with tomorrow’s update.

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