From the ABC 7 Weather team

D.C. area forecast: Isolated storms west this evening

May 3, 2012 - 03:28 PM
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A few showers and storms will be possible this evening into tonight mainly west of D.C.

Tonight: Partly Cloudy, Stray Storms

Lows: 60s | Wind: S 3-5 m.p.h.

Friday: Partly Sunny, PM Storms Possible

Highs: Mid to Upper 80s | Precipitation: 40%

Saturday: Partly Cloudy, Isolated Storms Possible

Highs: Mid 80s | Precipitation: 30%

After a cloudy and cool stretch through the morning and into the afternoon, skies cleared and temperatures finally started climbing. As we head into the evening, I expect the temperature pattern to remain much like it is right now. This is most areas west of the I-95 corridor in the 80s while areas to the east remain in the 70s. Isolated showers and thunderstorms may develop over the mountains and highlands this afternoon and will tend to move eastward. But as of this writing none have yet formed. With an little weather disturbance expected to move overhead later tonight, the chance for isolated activity will remain.

All week, we have been mentioning tomorrow as being the warmest day of the week. This now appears likely. Skies will be partly cloudy and temperatures will climb into the middle and upper 80s. There is a 40% chance of afternoon and evening showers and thunderstorms. We are also under a slight risk, by the Storm Prediction Center, of having severe thunderstorms. This activity will be the result of significant day time heating and the approach of a cold front.

We still don’t have a reliable handle on the Saturday forecast. Computer model differences make it quite challenging. Right now, we expect the cold front to still be in the general neighborhood during the day Saturday. That means a 30% chance of afternoon thunderstorms. Should the front move farther south sooner, then drier weather would arrive Saturday afternoon. Sunday looks great. After some morning cloudiness it will become partly to mostly sunny and less humid with highs in the middle 70s.

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