From the ABC 7 Weather team

Heat and humidity locked into the region

June 7, 2011 - 02:58 PM
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The National Weather Service has issued a heat advisory for the Washington area that’s in effect until 8 p.m. Wednesday.

This Afternoon: Partly Sunny, Hot & Humid

Highs: Near 90 | Wind: SW 4-8 m.p.h.

Overnight: Mostly Clear, Warm

Lows: Upper 60s to Low 70s | Wind: SW 5 m.p.h.

Wednesday: Mostly Sunny, Hot & Humid

Highs: Upper 90s | Wind: SW 5-10 m.p.h.

A Heat Advisory is in effect from Noon until 8pm Wednesday. Heat index values may reach up to 105 degrees.

Remnants of an MCS (Mesoscale Convective System) has been making its way south towards our area but should stay mainly to the west. The region will get some debris clouds from this system though which should act to limit heating just a touch (maybe only upper 80s instead of around 90) and should limit thunderstorm development. Regardless, it will still be hot and humid today. Tonight will be mostly clear and warm with lows in the 60s and 70s.

Wednesday, the heat and humidity is expected to increase with highs in the upper 90s under mostly sunny skies. A few areas may reach near 100 degrees, and additionally, heat index values should reach over 100. It will be a good day to stay indoors if at all possible. Thursday will see more of the same hot weather with highs in the upper 90s. A few storms may be possible Thursday night as a cold front approaches from the west.

There is a much better chance for showers and storms Friday through Sunday as a frontal system moves into the region. Highs should be back in the lower 90s Friday and into the 80s for the weekend.

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