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Posted at 3:20 PM ET, 07/20/2009

PM Update: Marine Air Mass in Control

By Ian Livingston

More clouds and a few showers on Tuesday

* NatCast | University Release Misleads Media on Climate *

Mostly light showers that have skirted around us today could advance into parts of the area through the rest of the afternoon, mainly south and west of D.C. Some small areas of briefly moderate rain may mix in with any light showers. Clouds, combined with a flow off the ocean, have helped keep us "cool" today with highs ranging from near 80 into the low 80s. It does feel a bit humid though thanks to moderate dew points in the 60s.

Through Tonight: Mostly cloudy conditions continue through evening and overnight with a few scattered showers possible. Temperatures falling through the 70s this evening will settle into the mid-60s across the area for lows.

Tomorrow (Tuesday): More in the way of mostly cloudy skies and cooler-than-normal temperatures are scheduled for Tuesday. Some more showers are also possible, mainly in the afternoon and/or evening. Once again, rain should not be terribly widespread. Highs rise to the upper 70s or lower 80s.

See Matt Rogers' full forecast through the weekend. And if you haven't already, join us on Facebook and follow us on Twitter.

TWC and NBC: reports that a discussion with Geoffrey Darby, executive vice president of programming for The Weather Channel (TWC), leaves open the possibility of the company replacing meteorologists at NBC-owned stations with those from TWC. NBC owns 10 local stations throughout the U.S., including Washington's WRC-TV (NBC4). While Darby said there is no plan currently in place for TWC to replace local forecasters, he also stated, "I can tell you we're looking at that opportunity."

By Ian Livingston  | July 20, 2009; 3:20 PM ET
Categories:  Forecasts  
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Next: NatCast: Clouds, Shower Chance Meet the Mets


The weather radar (the one here and others) all show us covered by rain. Not a drop is falling in Mclean nor Laytonsville where I live. Both are in dark green right now on the radar! This happens alot. ...and don't tell me it is humidity...they are all in precip mode.

what gives?

Posted by: jehova981 | July 20, 2009 6:01 PM | Report abuse

Where is the rain? Looks like we are stuck in this mid summer mode again where rain is just luxury. It wasn't always like this before.

What's up with this "60% chance of shower"? My expeirence tells me take 30 points off it and then you have an accurate forecast - you will never see a drop of rain if it's 60%. Only take it seriously when it says 90%. That's how it goes. I don't know it's the system or human meddling.

Posted by: LoudounGeek | July 20, 2009 9:34 PM | Report abuse

There was just the hint of a sprinkle or two this evening--otherwise we were quite dry.

The rest of the week figures to be a bit wetter...

Posted by: Bombo47jea | July 21, 2009 12:22 AM | Report abuse

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