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Posted at 9:45 PM ET, 01/ 5/2009

Will Ice Impact Schools?

By Jason Samenow

Winter Weather Advisory in effect 6 a.m. Tues through 9 a.m. Wed. N&W of D.C. (includes Fairfax, Montgomery and Howard counties and points N&W; excludes Arlington County, Falls Church and Alexandria)

* Wintry Mix Targets Area Tuesday: Full Forecast Through Weekend *

Temperatures: Current area temperatures. Powered by Weather Bonk. Map by Google. Hover over and click icons for more info. Click and hold on map to pan. Refresh page to update. See map bigger on our Weather Wall.

Tomorrow's winter weather event is a marginal one -- in that a couple degrees will make the difference between an icy mess and mainly cold rain. As usual, the further north and west you go, the better chance of the former. I don't think conditions will be bad enough for delays or closings in the immediate metro area in the morning.

In the outlying north and west counties (Loudoun and Frederick), there's a slight chance precipitation could start early enough (and that it will be cold enough) that school is delayed or even called off. More likely, these counties will see early dismissals, which could even extend into Fairfax and Montgomery Counties depending on temperatures midday tomorrow and how scared decision makers are. The prospect of ice does tend to strike fear in the hearts of school administrators...

SchoolCast:

For Loudoun and Frederick Counties and north and west:

Fairfax and Montgomery Counties:

Everywhere else:

By Jason Samenow  | January 5, 2009; 9:45 PM ET
Categories:  Updates  
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Next: Forecast: Icy Challenges Today

Comments

Yay schoolcast! :D Even if it's not good! :(

Posted by: PeterBethesda | January 5, 2009 10:06 PM | Report abuse

What is the likelihood of after school activities being cancelled for MOCO? I'm guessing pretty good?

Posted by: PoorTeacher | January 5, 2009 10:09 PM | Report abuse

WINTER STORM WARNING IN EFFECT FROM 6 AM TUESDAY TO 9 AM EST
WEDNESDAY.

Oops. Looks like the situation has changed. Fasten your seat belts. It's going to be a bumpy ride.

Posted by: faygokid | January 5, 2009 10:23 PM | Report abuse

Quick question Capital, Here is and update from the NWS. Do the dew points somewhat give you an idea has to where the air temps will actually fall to? Dew point is 25 here in Culpeper va. I know it won't go that low.

NWS:

ACTUAL
DEWPOINTS ARE SEVERAL DEGREES LOWER THAN WHAT THE MODELS WERE
PROGGING. THE COLD AIR WILL CONTINUE TO SETTLE SOUTHWARD OVERNIGHT

Posted by: clintonportis17 | January 5, 2009 10:25 PM | Report abuse

Winter storm warning for what area faygokid?

Posted by: PoorTeacher | January 5, 2009 10:30 PM | Report abuse

@ faygokid:
The WWA has not been upgraded to a warning, with the exception of areas around Cumberland and Deep Creek Lake, Maryland. Not sure where you're getting your information from.

@ PoorTeacher:
I would guess that there's a pretty good chance of MoCo cancelling after-school activities... although if somehow the storm plays out to be plain rain in your region, I could be wrong. Bottom line: in my experience (somewhat limited), if there's any wintery precipitation, schools will cancel after-school activities.

Posted by: Sterlingva | January 5, 2009 10:31 PM | Report abuse

@PoorTeacher

I'd say slightly better than 50/50 chance after school activities are canceled in MOCO.

@Faygokid

The advisory was upgraded to a winter storm warning only for Allegany and Mineral Counties--well west of here.

@clintonportis

The temperature tends to fall as precip begins towards the dewpoint, but the dewpoint tends to also rise when precip starts...so often there's some convergence somewhere in the middle.

Posted by: Jason-CapitalWeatherGang | January 5, 2009 10:34 PM | Report abuse

ok thanks. So anywhere from 30-33 give or take a little.

Posted by: clintonportis17 | January 5, 2009 10:36 PM | Report abuse

Temperature here in Sterling is 40.3 degrees and slowly falling. At this rate, it won't make it below freezing... although the dew point is very low at 16 degrees. Does this mean the temperature will begin to fall more quickly? I'm not sure what the correlation is between dew point and air temperature, aside from the fact that the air temperature can't fall below dew point temperature. I think.

Any idea if ice accumulations on the roads will occur in Sterling? Or Leesburg? I'm hoping for at least an early dismissal for Loudoun.

Posted by: Sterlingva | January 5, 2009 10:38 PM | Report abuse

For those who asked, check this out, from this site, updated tonight at 9:46 p.m. I live in Montgomery County, but we are not alone.

WINTER STORM WARNING IN EFFECT FROM 6 AM TUESDAY TO 9 AM EST
WEDNESDAY.

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A
WINTER STORM WARNING FOR A MIXTURE OF FREEZING RAIN AND
SLEET...WHICH IS IN EFFECT FROM 6 AM TUESDAY TO 9 AM EST
WEDNESDAY. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT.

HIGH PRESSURE CENTERED OVER PENNSYLVANIA WILL BE TRACKING ACROSS NEW
JERSEY ON TUESDAY. AT THE SAME TIME LOW PRESSURE WILL BE MOVING
NORTHEAST FROM THE TENNESSEE VALLEY. THIS LOW WILL DRAW MOISTURE
INTO THE MID ATLANTIC. WITH SUBFREEZING AIR IN PLACE AT THE
SURFACE...WINTRY PRECIPITATION IN THE FORM OF SLEET AND FREEZING
RAIN IS EXPECTED TUESDAY INTO WEDNESDAY MORNING.

BY THE TIME THE STORM EXITS THE REGION LATE WEDNESDAY AROUND ONE
QUARTER INCH OF ICE IS POSSIBLE IN THE WARNING AREA.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF ICE ARE
EXPECTED OR OCCURRING. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR
IMPOSSIBLE.

$$

MDZ003>007-009-010-VAZ027>031-039>042-051>053-WVZ050>053-055-501-
502-061100-
/O.CON.KLWX.WW.Y.0001.090106T1100Z-090107T1400Z/
WASHINGTON-FREDERICK MD-CARROLL-NORTHERN BALTIMORE-HARFORD-
MONTGOMERY-HOWARD-SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-
MADISON-RAPPAHANNOCK-FAUQUIER-LOUDOUN-CULPEPER-
PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX-HAMPSHIRE-MORGAN-
BERKELEY-JEFFERSON-HARDY-WESTERN GRANT-EASTERN GRANT-
INCLUDING THE CITIES OF...HAGERSTOWN...FREDERICK...WESTMINSTER...
GAITHERSBURG...COLUMBIA...WINCHESTER...FRONT ROYAL...WASHINGTON...
LEESBURG...CULPEPER...MANASSAS...MANASSAS PARK...FAIRFAX...
MARTINSBURG...CHARLES TOWN...BAYARD...PETERSBURG
946 PM EST MON JAN 5 2009

Posted by: faygokid | January 5, 2009 10:38 PM | Report abuse

I'm confused!!!

Posted by: PeterBethesda | January 5, 2009 10:41 PM | Report abuse

Looks real... sounds real...

But the forecast for Gaithersburg, MD (MoCo? I'm pretty sure it's in Montgomery) shows a Winter Weather Advisory.

http://forecast.weather.gov/MapClick.php?CityName=Gaithersburg&state=MD&site=LWX&textField1=39.1412&textField2=-77.2166&e=0

Posted by: Sterlingva | January 5, 2009 10:49 PM | Report abuse

faygokid - STOP twisting the truth. The winter storm warning is NOT for montgomery co. You are wrong.

Posted by: Kmlwx | January 5, 2009 10:50 PM | Report abuse

faygokid COPIED the Winter Storm Warning and then copied the county list from the ADVISORY and pasted it below the warning...OR he copied and pasted and read wrong (more likely)...either way DON'T BELIEVE HIM!!!

WINTER WEATHER ADVISORY NOT A WARNING

Posted by: Kmlwx | January 5, 2009 10:52 PM | Report abuse

faygokid,

When the NWS issues statements, the locations appear above the advisory message, not below it. You have copied the wrong info.

Posted by: Rob63 | January 5, 2009 10:55 PM | Report abuse

faygokid - the two little $$ at the end of the alert indicate the end of the message...Therefore the counties you have there are not correctly associated with the WSW.

Posted by: Kmlwx | January 5, 2009 10:56 PM | Report abuse

i think maybe it's time i left arlington county schools and found a job in one of my northern or western neighboring counties...

Posted by: dinergirl | January 5, 2009 11:55 PM | Report abuse

Hearing frozen precip hitting the window just now in Rockville. Sounds like sleet. Yes. Steady sleet here in Rockville at this hour.

Posted by: Havoc737 | January 6, 2009 12:36 AM | Report abuse

sleeting in chevy chase as well

Posted by: cjespn | January 6, 2009 12:43 AM | Report abuse

There's some sleet here as well, but I'm mostly just excited about another schoolcast! Here's to hoping for many more schoolcasts this winter season, preferably for 6 foot snowstorms. =D

Posted by: topspinserve | January 6, 2009 12:55 AM | Report abuse

I am hearing sleet hitting my air conditioner on Capitol Hill. Seeing rain on the windows also.

Posted by: Bitter_Bill | January 6, 2009 1:11 AM | Report abuse

The comments to this entry are closed.

 
 
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