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Posted at 5:00 AM ET, 06/10/2008

Forecast: Cold Front to Topple Heat Regime

By Matt Rogers

Weather coup d'etat this afternoon and evening

*Heat Advisory in effect through 8 p.m.*

The temperature revolution is nearing closer with our current extreme heat regime about to be removed from power. But do not expect it to go without a fight. The battle is to be waged this afternoon and evening with a chance of thunderstorms once again invading the D.C. area. The Storm Prediction Center says that some storms could be severe. By tomorrow, we should be in a new more comfortable world with highs in the 80s.

TODAY (TUESDAY)

Last big hot day. Afternoon/evening storms possible. Middle to upper 90s It's the final day of simmering heat -- at least for a while. As the heat index again climbs over 100 this afternoon, clouds should begin to increase. The best chance of storms (40% chance) arrives late in the afternoon and into the evening. A few storms could produce very heavy rain and damaging winds. Rainfall amounts may reach up to 0.75" locally.

A few storms could linger overnight followed by a wind shift late a night from a cooler northerly direction. Look for temperatures in the upper 60s in the suburbs to near 70 downtown DC.

Confidence: Medium-High

Keep reading for the forecast through the weekend.

TOMORROW (WEDNESDAY)

Partly cloudy with lower humidity. 85-89. Northerly winds should continue the cooling and drying process. The mid to upper 80s will feel far more comfortable than recent days in the metro area. Look for spells of cloud cover intermixed with rays of sunshine during the day.

Partly cloudy skies Wednesday night. Lows should dip into the lower to middle 60s. Aaah.

A LOOK AHEAD

Thursday continues the pleasant weather theme with dominating sunshine and highs in the middle 80s. Lows will drop to the 60s once again. Confidence: Medium-High

Friday starts to tick that humidity back up a notch again and we could even hit 90 in some locations. Also expect a better chance of evening thunderstorms and lows down in the upper 60s to lower 70s. Confidence: Medium

The weekend is split right now with a humid, thunderstorm-heavy Saturday (highs upper 80s to lower 90s) and a cooler, drier Sunday (highs lower 80s). Timing is everything and the forecast is subject to change this early in the game. Confidence: Medium

By Matt Rogers  | June 10, 2008; 5:00 AM ET
Categories:  Forecasts  
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