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Posted at 5:00 AM ET, 04/ 8/2010

Forecast: Season's first severe t'storm threat

By David Streit

Much cooler tomorrow & Saturday

* 3 years ago yesterday: snow | Heat poll | Nats-Phillies forecast *
* CWG T-Shirts | Clouds and more: Weather Wall | Get There *

Today's Daily Digit
 
A somewhat subjective rating of the day's weather, on a scale of 0 to 10.
 
6Increasing clouds will make it not as hot but t'storms could make for a messy ending.
 
Get tomorrow's 'Digit' on Twitter tonight

EXPRESS FORECAST

Today: Continued warm, with late afternoon storms. 79-85. | Tonight: Showers ending then clearing & cooler. 47-51. | Tomorrow: Mostly sunny but much cooler. 57-61. | A Look Ahead | Get Express Forecast by E-mail

FORECAST IN DETAIL

By David Streit, CWG Meteorologist

Our premature taste of summer may end with a bang today with the threat of strong thunderstorms late this afternoon. More typical spring conditions will follow the storms. Tomorrow will feel almost cold, but surprise, the readings will actually be very close to normal for this time of year. It may even be chilly enough for pockets of frost in coldest areas tomorrow night. The weekend will be very pleasant with light winds and moderating temperatures.

Temperatures: Latest D.C. area temperature map powered by iMap (base map by Google). Click and hold on map to pan. Double-click to zoom. Refresh page to update. See larger map on our Weather Wall.

Today (Thursday): The day will start off sunny and warm but increasing high clouds will be quick to move in and thicken by afternoon. Highs will still reach the low-to-mid 80s with winds from the south at 10 to 15 mph. A cold front crossing the Appalachians will likely set off a line of strong to possibly severe thunderstorms between about 5 and 8 pm. The main threat will be strong winds gusts up to 60 mph. Confidence: Medium-High

Thundercast:
Probability: 70%
Coverage: Scattered to widespread

Tonight: Thundershowers will quickly move out of the area in the early evening but scattered light rain showers may (30% chance) linger until around midnight. The winds will drop off to 5 to 10 mph from the west but will pick up late night to 10 to 15 mph. Lows will be in the upper 40s to lower 50s. Confidence: Medium-High

Keep reading for the forecast through Monday....

Tomorrow (Friday): This day will be a return to normalcy with highs only in the upper 50s to lower 60s. Winds from the northwest will make it almost chilly as they run 10 to 15 mph and gust to 25 mph. At least skies will be mostly sunny, making it more tolerable in the sunshine. Confidence: High

Tomorrow Night: Skies will be mostly clear. The winds will remain fairly strong early in the evening from the west at 10 to 15 mph but will lighten up later at night. Skies will be mostly clear and this will allow temperatures to drop fairly quickly. It is not out of the question that some colder low lying areas in the northwest suburbs could see a light frost! Most lows will be in the mid- 30s to lower 40s. Confidence: High

A LOOK AHEAD

Saturday will warm up nicely with highs reaching the low to mid 60s under mostly sunny skies. Winds will be much lighter from the west at 5 to 10 mph. This will be a great day to work in the garden! Confidence: High

Sunday will see another cool start with morning lows in the upper 30s to mid-40s. However, the day will be a winner as light winds from the west at 5 to 10 mph do not detract from highs in the low-to-mid 70s. Confidence: Medium-High

Monday will see a dry cold front sink through the area at daybreak. Morning lows will only be in the mid-to0upper 40s. Winds from the north at 10 to 15 mph will slow warming with highs maxing out in the upper 60s to lower 70s. It may be mostly cloudy in the morning but should clear by midday. Confidence: Medium

By David Streit  | April 8, 2010; 5:00 AM ET
Categories:  Forecasts  
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Comments

Storms! and no one comments? haha

Posted by: Camden-CapitalWeatherGang | April 8, 2010 9:36 AM | Report abuse

As someone intrigued by "T Storms," I am following your forecast . . .

Posted by: sullivanva1 | April 8, 2010 9:48 AM | Report abuse

I'm looking forward to the storms this evening. It does seem like the storms have been progressively weaker as they have moved further east. Will these storms be "severe" in an east coast sense or will could we actually see damage?

Posted by: bgaffney491 | April 8, 2010 10:00 AM | Report abuse

Hi bgaffney491 - here on the east side of the mountains, there's another unstable pool of air in the atmosphere that could re-charge the storms. Plus with the current sunshine percolating the atmosphere in/around DC, it increases chances for heavier storms. Wind damage may be the biggest threat today, but mainly--heavy rain. I can let one of my teammates (more expert on Severe Weather than me) try to give feedback to you here as well!

Posted by: Camden-CapitalWeatherGang | April 8, 2010 10:56 AM | Report abuse

@bgaffney491

Widespread damage from t'storms is not common around here...and while there may be some isolated storms that producing damaging gusts...this doesn't seem like a huge outbreak.

Posted by: CapitalWeatherGang | April 8, 2010 11:05 AM | Report abuse

Besides snowstorms, severe weather (Thunderstorms) are probably my favorite aspect of meteorology (I know I'm not the only one). Outside of a few wind reports, I agree with Camden on this not being a huge outbreak of dangerous weather. Based on this morning's sounding at Dulles, the instability won't be enough for large hail, the spin(shear) won't be there for tornadoes, but a nice dry layer will allow cooling needed for downburst winds.

Posted by: Brian-CapitalWeatherGang | April 8, 2010 11:13 AM | Report abuse

Channel 4 is saying the storms may hold off until very late this evening...nearly midnight.

Posted by: Bombo47jea | April 8, 2010 11:15 AM | Report abuse

How many inches? Do I need to dig out my snow stick?

Posted by: ah___ | April 8, 2010 11:44 AM | Report abuse

There's nothing better than a good thunderstorm. They're loud, dramatic and beautiful. Bring it on!

Posted by: mhardy1 | April 8, 2010 12:30 PM | Report abuse

Can you please make the t-storms stop by 7:30? That is bedtime in my house and my two kids don't like thunder.

Posted by: authorofpoetry | April 8, 2010 12:58 PM | Report abuse

Hopefully I can get to my birthday dinner with friends before the storms... and watch the lightning from the windows of friends' darkened house... :) (I'm the BD girl, maybe they'll indulge me.)

Posted by: MKoehl | April 8, 2010 1:12 PM | Report abuse

Since I find the forecast of severe storms just as distracting as apocalyptic snow projections I am very annoyed with TWC and NWS. TWC has the bright red "severe weather" box around the forecast for tonight indicating strong storms. The we have NWS stating both a "slight risk of severe thunderstorms" in the same area as potential for tornado. However, looking at the radar all I see is heavy rain to the west...Please, somebody explain what I am missing!

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS LATE THIS AFTERNOON
AND TONIGHT AS A COLD FRONT MOVES ACROSS THE REGION. DAMAGING WIND
AND LARGE HAIL WILL BE THE PRIMARY THREATS...BUT AN ISOLATED
TORNADO WILL BE POSSIBLE LATE THIS AFTERNOON AND EARLY THIS
EVENING.

Posted by: amandap2986 | April 8, 2010 1:33 PM | Report abuse

Great, I wonder how long my cats are gonna be under the bed?

Posted by: wadejg | April 8, 2010 3:04 PM | Report abuse

The comments to this entry are closed.

 
 
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