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Winter storm 12/8-9 Observations/Nowcasting II


nj2va

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URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
530 PM EST SUN DEC 8 2013

DCZ001-MDZ011-013-014-VAZ054-090630-
/O.UPG.KLWX.WW.Y.0034.000000T0000Z-131209T1200Z/
/O.EXA.KLWX.WS.W.0010.000000T0000Z-131209T1500Z/
DISTRICT OF COLUMBIA-SOUTHERN BALTIMORE-PRINCE GEORGES-
ANNE ARUNDEL-ARLINGTON/FALLS CHURCH/ALEXANDRIA-
INCLUDING THE CITIES OF...WASHINGTON...BALTIMORE...ANNAPOLIS...
ALEXANDRIA...FALLS CHURCH
530 PM EST SUN DEC 8 2013

...WINTER STORM WARNING IN EFFECT UNTIL 10 AM EST MONDAY...

THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS
ISSUED A WINTER STORM WARNING FOR SNOW...SLEET AND FREEZING
RAIN...WHICH IS IN EFFECT UNTIL 10 AM EST MONDAY. THE WINTER
WEATHER ADVISORY IS NO LONGER IN EFFECT.

* PRECIPITATION TYPE...A MIXTURE OF SNOW...SLEET AND FREEZING
RAIN CHANGING OVER TO FREEZING RAIN.

* ACCUMULATIONS...LESS THAN ONE HALF INCH OF ADDITIONAL SNOW AND
SLEET FOLLOWED BY UP TO ONE QUARTER INCH OF ICE.

* TIMING...A MIXTURE OF SNOW...SLEET AND FREEZING RAIN WILL TAPER
OFF THROUGH EARLY EVENING. EXPECT A PERIOD OF FREEZING DRIZZLE
DURING THE MID EVENING...THEN A ROUND OF SUBSTANTIAL FREEZING
RAIN FROM LATE EVENING THROUGH THE NIGHT. FREEZING RAIN WILL
GRADUALLY CHANGE TO RAIN THROUGH MONDAY MORNING.

* TEMPERATURES...UPPER 20S TO AROUND 30 INTO LATE TONIGHT...RISING
ABOVE FREEZING MONDAY MORNING.

* WINDS...NORTHEAST 5 TO 10 MPH.

* IMPACTS...DOWNED TREE BRANCHES AND SIGNIFICANT POWER OUTAGES ARE
POSSIBLE. DRIVING AND WALKING CONDITIONS WILL DETERIORATE
FURTHER LATE TONIGHT AND BECOME VERY DANGEROUS FROM ICING DUE TO
FREEZING RAIN.

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URGENT - WINTER WEATHER MESSAGE

NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC

530 PM EST SUN DEC 8 2013

DCZ001-MDZ011-013-014-VAZ054-090630-

/O.UPG.KLWX.WW.Y.0034.000000T0000Z-131209T1200Z/

/O.EXA.KLWX.WS.W.0010.000000T0000Z-131209T1500Z/

DISTRICT OF COLUMBIA-SOUTHERN BALTIMORE-PRINCE GEORGES-

ANNE ARUNDEL-ARLINGTON/FALLS CHURCH/ALEXANDRIA-

INCLUDING THE CITIES OF...WASHINGTON...BALTIMORE...ANNAPOLIS...

ALEXANDRIA...FALLS CHURCH

530 PM EST SUN DEC 8 2013

...WINTER STORM WARNING IN EFFECT UNTIL 10 AM EST MONDAY...

THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS

ISSUED A WINTER STORM WARNING FOR SNOW...SLEET AND FREEZING

RAIN...WHICH IS IN EFFECT UNTIL 10 AM EST MONDAY. THE WINTER

WEATHER ADVISORY IS NO LONGER IN EFFECT.

* PRECIPITATION TYPE...A MIXTURE OF SNOW...SLEET AND FREEZING

RAIN CHANGING OVER TO FREEZING RAIN.

* ACCUMULATIONS...LESS THAN ONE HALF INCH OF ADDITIONAL SNOW AND

SLEET FOLLOWED BY UP TO ONE QUARTER INCH OF ICE.

* TIMING...A MIXTURE OF SNOW...SLEET AND FREEZING RAIN WILL TAPER

OFF THROUGH EARLY EVENING. EXPECT A PERIOD OF FREEZING DRIZZLE

DURING THE MID EVENING...THEN A ROUND OF SUBSTANTIAL FREEZING

RAIN FROM LATE EVENING THROUGH THE NIGHT. FREEZING RAIN WILL

GRADUALLY CHANGE TO RAIN THROUGH MONDAY MORNING.

* TEMPERATURES...UPPER 20S TO AROUND 30 INTO LATE TONIGHT...RISING

ABOVE FREEZING MONDAY MORNING.

* WINDS...NORTHEAST 5 TO 10 MPH.

* IMPACTS...DOWNED TREE BRANCHES AND SIGNIFICANT POWER OUTAGES ARE

POSSIBLE. DRIVING AND WALKING CONDITIONS WILL DETERIORATE

FURTHER LATE TONIGHT AND BECOME VERY DANGEROUS FROM ICING DUE TO

FREEZING RAIN.

Why would they issue this during the lull?

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Nice, my first warning of the season.  :santa:

 

I know many didn't like CT DOT up in my old neck of the woods, but does DC even have plows lol? I haven't seen a single one and the road outside looks like a sheet of ice--just as it was a few hours ago. 

 

read something yesterday about dozens of "city and contractor owned equipment" roaming dc to prep for this event... but then again, who knows what that could mean in a town where it takes less time to get a pizza delivered than it does to get an ambulance to your house.

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That's not how it works...Why would they want there to be a gap (even a little) in the warning. Then people will just assume it's over if they see "The winter weather advisory has been canceled"

Just my opinion, I feel like many past warnings have been issued/upgraded in the process of worsening conditions. Have lead times for winter events lengthened over recent years?

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26/23

With the frozen precip down at this point I dont see my surface temps going up from here until tomorrow. That slug of freezing rain is going to be awful.

 

I dunno...  It still has a long way to track, and the mid level warmth is already present...  I could see it turning to rain sooner rather than later, especially for points south of DC...

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It's just kind of interesting to see. I am not in an important area. It looks like mid-January outside. I love it. 

 

29.8/28

 

oh absolutely, i love it too - and i'd love it even more if i had more than 1.1 on the ground. still havent seen a plow in rosslyn and its getting quite slick out there. guess i'm not in an important area either :thumbsup:

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I dunno...  It still has a long way to track, and the mid level warmth is already present...  I could see it turning to rain sooner rather than later, especially for points south of DC...

Oh I agree with that assessment. The bay/rivers are still warm enough. I was talking about those of us out west.

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