Thursday, June 21, 2007

Superb Solstice, But Some Storms Possible

** Severe Thunderstorm Watch in Effect Until 10 PM **


Mostly sunny, warm. Clouds drifting southward this afternoon from some fairly heavy thunderstorm activity in Pennsylvania ahead of a cold front have marred what was otherwise a crystal-clear blue sky in the Washington metro area. In fact, these storms, which have already prompted a severe thunderstorm warning for Washington County, MD, appear to have the momentum to at least graze the northern suburbs by evening.

Otherwise, mid afternoon temperatures in the range of 86-88° and dewpoints as low as 50° have combined for a very comfortable summer solstice. chart from NWS data, photo © Kevin Ambrose

Tonight and Tomorrow

Chance of evening storms, but mainly comfortable. There is a chance of showers or thunderstorms through this evening, especially north of the Beltway. The remainder of tonight will be partly cloudy with comfortable humidity and lows in the low to mid 60s in the city and some upper 50s in the 'burbs. Tomorrow will be sunny, dry, and a little cooler with highs 81-84°.

For the outlook through the weekend and beyond with Larson's Long-Range, scroll on down to Josh's post below.

Blogrolling's Andrew Freedman had a post on Monday at The Weather Channel's Forecast Earth blog reviewing temperature and precipitation anomalies (departures from average) through May of this year.

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Seasonal Outlook

Latest seasonal forecast: Click here.

Latest 3-month temperature outlook from Climate Prediction Center/NWS/NOAA.