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Posted at 5:15 PM ET, 12/16/2008

PM Update: Falling Temperatures Lead to Some Ice

By Ian Livingston

Light rain turning to sleet/freezing rain in N&W suburbs

Winter Weather Advisory N&W of D.C. through 11 a.m. Wed. morning (includes Montgomery, Loudoun & Frederick counties)

* Ice Forecasts by Area | What about the rest of the week? Forecast *

Temperatures are slowly dropping through the 30s, but most of the area remains above freezing this afternoon. Rain showers have generally been light and intermittent in the immediate area. But steadier and heavier precipitation, which has included reports of sleet and snow, lies just to our north and west and could slowly move in during the late afternoon and evening.

This Evening: Near and inside the Beltway and to the south and east, light rain may mix with sleet and pick up in intensity later on in the evening. But icy roads are not expected, except maybe a few slick spots in Montgomery and Fairfax counties, with temperatures likely to stay above freezing through the night. Further north and west in Loudoun and Frederick counties, a moderate mix of snow, sleet and freezing rain could create problems with temperatures there dipping to near or just below freezing.

The further north and west of the city you're headed this evening, the better odds of encountering slippery spots, especially on bridges and overpasses. Places like Hagerstown, Md. and Martinsburg, Wv. -- where cold air is more established -- have seen snow through much of the day.

Overnight: Additional areas of precipitation will pass through the area overnight. Any sleet that mixes in with the rain near and inside the Beltway and points south and east should continue to have little impact with temperatures hovering a few degrees above freezing. But watch for sleet and freezing rain to create some slippery spots in the far north and west suburbs where temperatures could bottom out around 30.

Most everyone should see temperatures above freezing and rising by mid-morning tomorrow.

See this evening's ice forecast broken down by location, and Matt Rogers' forecast through the weekend. Stay tuned for updates as conditions warrant.

By Ian Livingston  | December 16, 2008; 5:15 PM ET
Categories:  Forecasts  
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Next: Morning Commute Should Mainly Be Wet, Not Icy


so no chance of a moco delay tomorrow?

Posted by: jenniel73 | December 16, 2008 4:35 PM | Report abuse

My temp is down to 32.6 here in NWDC. Any chance this could turn into some icy stuff?

Posted by: NWDCJesse | December 16, 2008 6:35 PM | Report abuse

Sleeting a bit in Germantown right now.

Posted by: PoorTeacher | December 16, 2008 6:36 PM | Report abuse

the area here in the town of madison va is about 600 ft. the county of madison can range from 300ft just to the east of me, to over 1800ft to the west. where do we here along the route 29 coridor fit when it comes to the forecast. are we considered west of the city? south of the city? i'm just not clear what category they put us in ??

Posted by: deveinmadisonva | December 16, 2008 6:47 PM | Report abuse

Deve-- You're in between south and west, so best to extrapolate--could see some frozen precip where you are...

Posted by: Jason-CapitalWeatherGang | December 16, 2008 7:01 PM | Report abuse

Jenniel73: We'll do a SchoolCast later this evening.

NWDCJesse: There could be pockets/patches of ice even inside the beltway, but temperatures probably too marginal for any sigificant iciness.

Posted by: Jason-CapitalWeatherGang | December 16, 2008 7:06 PM | Report abuse

I have two weather stations in different areas of my house and both show 32 degrees and still its raining. Not one sleet pellet today.

Posted by: clintonportis17 | December 16, 2008 7:18 PM | Report abuse

No big deal tonight, but caution advised.

Sat night and Sunday could be a big deal for many!

Posted by: AugustaJim | December 16, 2008 7:18 PM | Report abuse

I see several Weatherbug stations in upper NW DC near freezing.. I am not sure what their acuracy is. (see: 1/2/3)

Posted by: Ian-CapitalWeatherGang | December 16, 2008 7:30 PM | Report abuse

AugustaJim, you've mentioned this coming weekend's wintery potential twice today...what do you foresee?

Posted by: --sg | December 16, 2008 7:39 PM | Report abuse

According to local Weather bug station (Oak Hill ES) The temperature here in Herndon is down to 31.2. Do you guys think I am far enough west to receive anything Frozen?

Posted by: Snowman_In_Herndon | December 16, 2008 7:42 PM | Report abuse

The southeast ridge will weaken, allowing more cold air in aloft from strong high pressure to our north. Low pressure will approach from the west and southwest that will set up a classic cad situation.

Many changes await, but the latest GFS suggests at least several hrs of frozen precip, possibly a significant storm of snow/sleet and freezing rain, especially western areas.

Posted by: AugustaJim | December 16, 2008 8:03 PM | Report abuse

it could get very interesting around here on sat night/sunday. although local mets don't seem to worried. Any surprise? I think even a few hours of frozen precip around here would be huge considering its only December and the kinda of winters we have been in.

Posted by: clintonportis17 | December 16, 2008 8:14 PM | Report abuse

There was some ice accumulating on cars in the parking lot when I got home to Columbia about an hour ago. Doesn't look to be sticking to anything else though.

Posted by: Brian-CapitalWeatherGang | December 16, 2008 8:17 PM | Report abuse

33.6 right now in Sterling, making a reading of 31 in Round Hill believable.

Do you guys think the temperature will fall one or two more degrees tonight?

Posted by: Sterlingva | December 16, 2008 8:31 PM | Report abuse

Dreaming of a white Christmas? So is the GFS.

And yes--there is reason to be excited about the weekend. I'm feeling a delay/closing Monday.

Posted by: KBurchfiel | December 16, 2008 8:34 PM | Report abuse

Relax my former NOVA neighbors. Here in Idaho we are expecting temps of -20 by the end of the week and the possibility of another foot of snow by tomorrow night. So far our local Safeway's shelves are still well stocked with bread, milk, and toilet paper.

Posted by: slim2 | December 16, 2008 8:38 PM | Report abuse

clintonportis: I wouldn't say we're not worried about the late weekend threat; we've mentioned it the last couple days in our extended outlooks. But our focus has been on tonight's weather. That will change tomorrow...

Posted by: Jason-CapitalWeatherGang | December 16, 2008 8:41 PM | Report abuse

What's the temp supposed to be like tonight? I could see some of the counties having a delay tomorrow..

Posted by: icecubedownthetoilet | December 16, 2008 8:44 PM | Report abuse

icecubedownthetoilet: See my new post with SchoolCast. Temperatures probably won't change much from current levels, so I'm not expecting many delays, except possibly in places like Loudoun and Frederick Counties. Slight chance in Montgomery, but I doubt it.

Posted by: Jason-CapitalWeatherGang | December 16, 2008 9:12 PM | Report abuse

Thanks, AugustaJim! I think I'll plan to stay in and do holiday baking.

Posted by: --sg | December 16, 2008 9:39 PM | Report abuse

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