Network News

X My Profile
View More Activity
The new Washington
Post Weather website
Jump to CWG's
Latest Full Forecast
Outside now? Radar, temps
and more: Weather Wall
Follow us on Twitter (@capitalweather) and become a fan on Facebook
Posted at 9:50 AM ET, 12/ 1/2010

Tornado watch until 10 a.m. for metro region

By Dan Stillman and Jason Samenow

(originally posted at 3:50 a.m., updated through 9:50 a.m.)

9:50 a.m. Update: Tornado warning for PG and Charles counties canceled.

9:30 a.m. Update: Tornado warning in effect for southern Prince George's and north central Charles county until 10 a.m. NWS indicates doppler radar indicated tornado near Waldorf moving northeast at 45 mph. Locations in possible path include Clinton. Take cover if you live in that area.

9:10 a.m. Update: Heavy showers and storms, with 50+ mph wind gust potential, are impacting eastern Fairfax and Montgomery counties. This activity will push east and northeast toward the District and western Prince George's county in the next 30-45 minutes. Further north A Severe Thunderstorm Warning is in effect for Howard and Baltimore counties (until 10:15 a.m.) where 60+ mph wind gusts are possible.

Keep reading for earlier updates and information about the Tornado Watch...

8:10 a.m. Update: A line of strong storms moving west to east across the far northern suburbs has prompted a Severe Thunderstorm Warning until 8:45 a.m. for northern Montgomery County, northern Howard County and eastern Frederick County. As with storms earlier this morning, winds gusts to near 60 mph are a threat. Montgomery Village and Damascus are among the locations that could see these storms.

6:20 a.m. Update: The line of heavy rain and strong wind that had been approaching and moving into western and northwestern suburbs has weakened. So at the moment, no Severe Thunderstorm Warnings are in effect in the metro area. However, the entire metro area remains under the gun for moderate to heavy rains (rain rates up to 1" per hour) through the morning commute and the potential for wind gusts of 50-60 mph+ that could bring down trees and cause power outages.

5:50 a.m. Update: The line of heaviest rain and strongest winds is now entering eastern Loudoun County, and in the next 45 minutes or so may clip northwestern Fairfax County and reach into Montgomery and Frederick counties. These areas are under a Severe Thunderstorm Warning until 6:30 a.m. The entire metro area remains under the gun for moderate to heavy rains (rain rates up to 1" per hour) through the morning commute and the potential for wind gusts of 50-60 mph+ that could bring down trees and cause power outages.

5:15 a.m. Update: Severe Thunderstorm Warnings are in effect until 5:45 a.m. for most of Fauquier (also under a Flash Flood Warning) and Stafford counties, southern Loudoun County, the western half of Prince William County, and the western fringe of Fairfax County. While there doesn't seem to be much lightning with these storms, the winds are the real concern, with gusts in excess of 60 mph possible according to NWS. These warnings, winds and heavy rain are likely to advance east through the metro area over the next couple hours.

4:50 a.m. Update: Moderate to heavy rain is now falling in Loudoun and Fauquier counties, the latter of which is under a Flash Flood Warning until 10:30 a.m. NWS warns, "IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS FLOODED ROADS."

From 3:50 a.m.: The National Weather Service's Storm Prediction Center (SPC) has issued a Tornado Watch until 10 a.m. for the entire metro region. Specifically, the watch includes the following areas:

The District, central and southern Md., northern Va., far eastern West Va., and coastal waters.

SPC cautions: "Tornadoes...hail to 0.5 inch in diameter...thunderstorm wind gusts to 70 mph...and dangerous lightning are possible in these areas."

It notes: "Main severe threat will be isolated damaging wind from [straight line winds]...but a short-lived tornado or two cannot be ruled out."

Showers and thunderstorms, with heavy rain and the potential for these damaging winds, will push through the metro region between 4 a.m. and about 9 or 10 a.m. If a tornado warning is issued for your area, seek shelter in a basement or, if no basement, an interior room on the lowest level where you live.

By Dan Stillman and Jason Samenow  | December 1, 2010; 9:50 AM ET
Categories:  Alerts  
Save & Share:  Send E-mail   Facebook   Twitter   Digg   Yahoo Buzz   Del.icio.us   StumbleUpon   Technorati   Google Buzz   Previous: PM Update: Heavy rain & wind late, then cold
Next: Tornado watch extended east (then canceled)

Comments

Is this pattern of hot, muggy nights accompanied by howling winds followed by severe pre-dawn tstorms going to keep happening all winter? Because it's really getting old!

I think we've seen more tornado watches in the past three months than in the whole of the 1980s.

Posted by: HenryFPotter | December 1, 2010 5:28 AM | Report abuse

This storm has been a nightmare in Jefferson County and it's far from over. High winds, hard rain, tornado watch, flood warning. Forget getting any sleep last night--I never even took off my coat and boots.

Posted by: tinkerbelle | December 1, 2010 5:58 AM | Report abuse

So have we got enough warnings, watches, and advisories going on? Flash flood watch, tornado watch, wind advisory, severe thunderstorm warning, coastal flood advisory, and to top it off a "special weather statement". We don't get this many things issued all at once even at the height of thunderstorm season. What a wild weather day.

Posted by: rwalker66 | December 1, 2010 6:10 AM | Report abuse

It's hard to interpret, but are you saying it might not be safe to be out on a bike?

In seriousness, I'm wondering if it's reasonable to expect that by 10 or 11am I should be able to ride safely to work in FFX county? Or are these 60+mph gusty wind potentials going to remain that strong enough beyond that?

Posted by: debiguity | December 1, 2010 6:18 AM | Report abuse

rwalker66,
do you think are they over-reacting?

Posted by: walter-in-fallschurch | December 1, 2010 6:22 AM | Report abuse

Walter,
No, I think mother nature is overreacting. How many times do we get severe thunderstorm warnings in December? I bet you'd prefer it was a heavy snow warning :)

Posted by: rwalker66 | December 1, 2010 6:28 AM | Report abuse

It was absolutely wild. Worse than the surprise system a couple of weeks ago. In fact, worst system I've seen in a while. It just would not give over, at least in my neck of the woods. The winds have diminished slightly (knock wood) so I might dare wade around the house and see if I still have any windows.

Posted by: tinkerbelle | December 1, 2010 6:31 AM | Report abuse

@debiguity

It will remain very breezy through much of the day. We'll still be getting gusts to 40 mph or so through 11 a.m. but probably not over 50 by then. Up to you whether to ride in those conditions.

Posted by: Jason-CapitalWeatherGang | December 1, 2010 6:32 AM | Report abuse

Thanks Jason! Helps a lot!

Posted by: debiguity | December 1, 2010 6:37 AM | Report abuse

Channel Four sent a reporter to Old Town for the minor flooding there. I'm convinced the City of Alexandria does nothing about the flooding problems because they always get the publicity, while only just minor disruptions to business. In fact, the Starbucks gang doesn't even blink an eye!

Posted by: jaybird926 | December 1, 2010 7:13 AM | Report abuse

rwalker66,
ok, well, it all seems a bit hyperbolic to me. i mean, it's raining and occasionally a bit windy here, but sheesh... seems like all the exciting weather misses falls church...

Posted by: walter-in-fallschurch | December 1, 2010 7:52 AM | Report abuse

With all the snow behind this rain (according to radar) will any of it remain and blow through here?

Posted by: dancermommd1 | December 1, 2010 8:46 AM | Report abuse

@dancermommd1

No-- all of that snow will dry up or pass to the northwest... just cold winds behind the rain...

Posted by: Jason-CapitalWeatherGang | December 1, 2010 8:50 AM | Report abuse

Was 62 in norther PW country at 6:30...now down to 51! Very strong winds...

Posted by: silencedogoodreturns | December 1, 2010 8:50 AM | Report abuse

Centreville VA Overnight wind gust(s) blew over my bamboo bean poles that I had tucked in a fenced corner. It must have been howling last night but we didn't hear a thing.
Lots of standing water on the roads.....nasty commute this morning. It's 62 degrees & the first day of December & we've got a morning tornado watch. Nothing seems weird anymore.

Posted by: FIREDRAGON47 | December 1, 2010 9:11 AM | Report abuse

This storm is going out with a bang, a strong tail that is fixing to pelt Alexandria.

Posted by: jaybird926 | December 1, 2010 9:27 AM | Report abuse

I think 75 degrees would be a lot more interesting this time of year.

http://www.erh.noaa.gov/lwx/climate/cliplot/KDCA2010plot.png

The low level southerly jet is well above normal, but not a 1 in 1000 event, more like 1 in 100.

Posted by: eric654 | December 1, 2010 9:31 AM | Report abuse

Heavy line developing just in time to move through the district, should see some more heavy rains.

Posted by: Brian-CapitalWeatherGang | December 1, 2010 9:32 AM | Report abuse

Tornado warning out for Southern PG and northern Charles. T-storm capable of producing a tornado near Waldorf.

Posted by: Brian-CapitalWeatherGang | December 1, 2010 9:35 AM | Report abuse

Temp dropped from 63 to 41 within a few minutes here in Fairfax. Right after a torrential downpour that made it so you couldn't even see out the window.

Posted by: rwalker66 | December 1, 2010 9:43 AM | Report abuse

Will all this water freeze tonight? Lots of ice around tomorrow morning?

Posted by: deag | December 1, 2010 9:49 AM | Report abuse

39 degrees and 1.77 inches of rain in Western Loudoun.

Posted by: worldtraveler83 | December 1, 2010 9:50 AM | Report abuse

rwalker66:
Same thing happened to me in Silver Spring around 9:40. When I went outside, it was only sorta misting and it was warm enough that I left my jacket open and put my hat in my pack. As I got toward metro (10 minute walk), it got darker and windier and started pouring. Had my coat zipped and my hat on by the time I got to the platform, which was kinda hellish with buckets of rain and tons of wind, especially coming through between the playform and the awning covering it. Actually, was better to stand out in the rain to avoid all the wind and lateral rain that comes with the covering. But yeah, cold.

Posted by: cassander | December 1, 2010 9:59 AM | Report abuse

Leesburg station reporting ip mixing in...anyone see any sleet out that way? Temp went from 65 to 49 downtown (near White House) in about 45 minutes since that line went thru...

Posted by: DullesARC | December 1, 2010 10:03 AM | Report abuse

In downtown, on the 7th floor of my building, I am seeing snow. Seriously, snow flurries floating down among the rain. It was warm when I go here 45 minutes ago!

Posted by: sophiamaria | December 1, 2010 10:08 AM | Report abuse

reporting from the barcroft plaza starbucks:
about 40 mins ago we had 5 mins of heavy rain and wind at my h. home/office. it's all done now. nothing i would call "dangerous" or "impressive" or anything... but... sure enough we lost $#%!ing power... so i took my laptop to starbucks... grrr...

Posted by: walter-in-fallschurch | December 1, 2010 10:25 AM | Report abuse

Well Walter, you did say "seems like all the exciting weather misses falls church..."

So then mother nature knocked your power out. Be careful what you ask for LOL

Posted by: rwalker66 | December 1, 2010 10:34 AM | Report abuse

@ Walter - that line that developed over DC was definitely both dangerous and impressive - especially so for December...visibility out my 4th floor window (facing North on 18th St) was down to only a few hundred feet, tops...very heavy stuff and the winds were bringing debris by my window - 50 feet up. A legit storm and the tornado warning about 15 miles to my south verifies this. The atmosphere was juiced like Barry Bonds this morning...

Posted by: DullesARC | December 1, 2010 10:36 AM | Report abuse

DullesARC,

Not seeing or hearing any in Hamilton, VA.

Posted by: worldtraveler83 | December 1, 2010 10:38 AM | Report abuse

According to

http://radar.weather.gov/Conus/full_loop.php

it looks like the weather system is pulling out and by looking out my western facing windows, I see some "clearing".

Posted by: worldtraveler83 | December 1, 2010 11:28 AM | Report abuse

Well Walter, you did say "seems like all the exciting weather misses falls church..."

So then mother nature knocked your power out. Be careful what you ask for LOL

Posted by: rwalker66 | December 1, 2010 10:34 AM
------------

(sheepishly) yes indeed...non-god made me pay for my earlier bravado...

(recovering a bit of bravado) but my comment was more an indictment of dominion electric than awe about the weather. but i agree it's kind of funny in a cosmic justice kind of way or something... dang.

DullesARC,
wow, must have been quite a sight. even though i lost power i'd still say we didn't have anything like that in falls church.

Posted by: walter-in-fallschurch | December 1, 2010 11:46 AM | Report abuse

The comments to this entry are closed.

 
 
RSS Feed
Subscribe to The Post

© 2012 The Washington Post Company