From the ABC 7 Weather team

D.C. Weather Forecast

June 28, 2012 - 07:50 AM
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Hot but not especially humid today but a Heat Watch goes into effect Friday morning because it will become oppressively hot and humid.

Thursday: Mostly sunny and hot but not humid.

Highs: 92°-96°  | Wind: W 6-12 mph

Overnight: Partly cloudy and becoming muggy

Lows: 68°-78° | Wind: SW 3-6 mph

Friday: Hot and humid with isolated am and pm thunderstorms

Highs: 96°-100° | Heat Index: 105°-110° in spots

The excessive heat arrives today. The excessive humidity will arrive tomorrow and last through the weekend and perhaps even longer. As the core of the excessive heat and humidity builds into the area, it will strengthen and expand. You will feel it!  But you will not see the atmospheric instability that will increasing, as well. The next few days will feature isolated thunderstorms. So you will not only need to plan on how you will cope with the oppressive conditions but also keep alert to any potential threat from developing thunderstorms. Live Super Doppler 7 is available 24/7 on this site.

Friday, Saturday and Sunday at the beaches will be a bit cooler. Highs will be in the upper 80s but there will also be daily thunderstorm chances.

** The Excessive Heat Watch for Friday will either be changed to a Heat Advisory or Excessive Heat Warning later today and it could be extended through the weekend **  

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