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Posted at 5:00 PM ET, 07/30/2008

CommuteCast: Hot With Scattered Thunder

By Ian Livingston

More heat and humidity for Thursday

*Severe Thunderstorm Watch until midnight for metro area*

Today has shaped up to be another typical late-July day of high heat and humidity. Partly cloudy skies did not do too much to hold temperatures back as most locations reach into the low 90s for highs. Showers and a few thunderstorms have developed west and northwest of the area. These will continue tracking toward the region and may impact some areas with brief heavy rain, lightning, and isolated damaging winds and/or large hail.

Monitor the Severe Weather Tracking Station below for latest radar and any severe warnings issued by the National Weather Service. See our full forecast below that, and comment with storm reports from your location.

Severe Weather Tracking Station
Warning Text: DC | MD | VA
Radar: Latest mid-Atlantic radar loop from the National Weather Service. Click on image to expand, or here to zoom. Refresh page to update. What's UTC?
LWX Warnings
Warnings: Severe warnings from the National Weather Service. Updates without refresh (most browsers). Click label in legend for detailed warning text.

Tonight: Following a risk of evening showers and thunderstorms, we see a fair amount of clouds stick around the area overnight. With dew points near or above 70 degrees in most locations, temperatures won't drop too much. Expect lows to hit the low 70s in the suburbs and mid to upper 70s in the city.

Tomorrow: Another muggy morning is on tap before a cold front approaches and moves through the area on Thursday. Expect partly to mostly cloudy skies with high temperatures rising into the upper 80s and low 90s. Afternoon or evening showers and thunderstorms are possible, some of which could pack a punch, though much of the activity may stay south of the area.

See NatCast for tonight's game, and Dan's full forecast through the weekend.

By Ian Livingston  | July 30, 2008; 5:00 PM ET
Categories:  Forecasts  
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Next: NatCast: Warm & Humid; Slight Chance T'storm


What did I tell you about heat and metro problems. I'm telling ya this should have been a 2 train day...

Disruption at Clarendon. (Expect delays to Vienna due to a train experiencing mechanical difficulties outside of Clarendon station.).

Posted by: Sara in Oakton | July 30, 2008 3:57 PM | Report abuse

Incoming storms seem to have lost some punch (i.e., less yellows/reds) as they trek eastward, and also don't look like they'll get to the Belvoir area much before 6-6:30 p.m. I might be throwing caution to the wind, but I'm staying at work until 5:30 or so before hopping my bike home...

Posted by: VAStateOfMind | July 30, 2008 4:57 PM | Report abuse

Severe T-Storm Watch just went up.

Posted by: Ian, Capital Weather Gang | July 30, 2008 5:00 PM | Report abuse

Ewwww. Well, the storms/rain to our direct west still appear to be about 45 minutes away AND dying out the closer they get to us. The real action appears to be to the north and east in Baltimore and southern PA and in southwestern PA. Are we having heavier storms later this evening?

Posted by: VAStateOfMind | July 30, 2008 5:11 PM | Report abuse

Tops to 500 my a$$...I think a severe thunderstorm watch is highly alarmist in these conditions. We'll be lucky if we get anything.

Posted by: Max | July 30, 2008 5:14 PM | Report abuse

The storms that are just rolling out of Pennsylvania into western Maryland are the ones that caused the watch to go up.

The cap has broken, and there is a 50-50 chance that the storms I mentioned above will develop into a squall line with wind damage over the next few hours.

Posted by: Curmudgeon | July 30, 2008 5:54 PM | Report abuse

As noted in a comment to the earlier thread, the bulk of the activity is to the north.
Meanwhile, it's 2 out of 3 in the 90s department:

National 92
Dulles 92
BWI 88

Posted by: CapitalClimate | July 30, 2008 6:00 PM | Report abuse

There has been a tornado reported on the ground in Garrett County in western Maryland, warnings continue with that storm.

Posted by: Ian, Capital Weather Gang | July 30, 2008 6:25 PM | Report abuse

There is concern about the cell which produced the tornado--this cell could be in our neighborhood around 9 PM.

Tropics generally quiet. Wave passing Trinidad seems to be most active. Many of the Windward Islands seem to be reporting showers as this wave passes into the Caribbean.

More of our news stories seem to be non-weather related, chiefly crime, fires and the continual campaigning. If McCain wins, look for more of the same. Offshore drilling seems to be the right wing's cause. It won't do any good. Getting those guzzling Hummers off the road will.

Posted by: El Bombo | July 30, 2008 7:22 PM | Report abuse

Is there a percentage of a chance of rain overnight like the Gang sometimes offers?

If, instead, it's a case of deep summer weather tending to render predictions too unpredictable, that would make sense.

Posted by: jhbyer | July 30, 2008 7:25 PM | Report abuse

its the dc split again no rain tonight sorry folks maybe northern areas

Posted by: josh | July 30, 2008 8:38 PM | Report abuse

jhbyer -- Earlier today, we were going with a 40% chance that any given spot would see a storm during the late afternoon and evening. That still seems about right. Certainly the trend this evening has been for the showers/storms to break up as they approach the metro area. And I think we'll be mostly done with the shower/storm threat after 11:30 p.m. or so.

Posted by: Dan, Capital Weather Gang | July 30, 2008 8:59 PM | Report abuse

If the community organizer wins look for sunny days, fair weather, no bad weather, and a temperate climate.

Posted by: Anonymous | July 30, 2008 9:02 PM | Report abuse

But the severe watch may have been just a little overdone?

Posted by: CapitalClimate | July 30, 2008 9:09 PM | Report abuse

After three weeks away from this hole, it's not fun to come back to complete swampiness. Bring on the storms!

Posted by: Dave | July 30, 2008 10:03 PM | Report abuse

I can't remember the last time the weather service didn't have a severe thunderstorm warning out for Arlington County.

Posted by: chas | July 30, 2008 10:40 PM | Report abuse

I am from Silverton OR but I enjoy reading your climate because it's like an extreme version of the NW except no South Wind events.

I want to know what it's like when you have those south winds pumping humidity?

Do the winds themselves feel coolish providing relief in the shade if you are in a spot to get the winds? I've only experienced extreme humidity and heat ONCE in 2006 here in Western Oregon.

Posted by: Heatblizzard | July 31, 2008 12:19 AM | Report abuse

Heatblizzard: The breezes still feel good when the humidity is high...although they feel little heavier -- I would say soothing as opposed to refreshing.

Posted by: Jason, Capital Weather Gang | July 31, 2008 12:51 AM | Report abuse

Thanks. Does it feel like a sauna room out there right now?

What kind of homes come with AC and in the Winter what kind of heat is the standard? or any house for that matter? Here in Silverton most houses come with AC if they are new but older homes do not.

Posted by: Heatblizzard | July 31, 2008 4:19 AM | Report abuse

Sorry for the weird sentence as I was erasing it and accidentally pressed submit forgetting it. :(

Posted by: Heatblizzard | July 31, 2008 4:20 AM | Report abuse

Dan, thanks. 40% saved lazy me from bringing in clothes hanging outside last night - not that a second rinse hurts.

Posted by: jhbyer | July 31, 2008 4:52 PM | Report abuse

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