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Winter storm 12/8-9 Observations/Nowcasting II


nj2va

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Hey ravensrule, where are you from in Baltimore? I've basically been coming away with the same readings and was curious. Btw, I was at game too. What a treat, but I'm not looking forward to tonight. That moisture plume is basically aimed right at the Central Mid Atlantic. 

Greenspring Ave north of exit 22 on 695.

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The question is - is it actually accumulating/are we getting accretion or is it just puddling because it's so heavy. 

It is beginning to accumulate on everything except for salted roads (which is most of them). I'm sitting at about 29.7 with a slight rise at the onset of the precip.

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AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
829 PM EST SUN DEC 8 2013

.NEAR TERM /UNTIL 6 AM MONDAY MORNING/...
 

-- Changed Discussion --

WENT AHEAD AND EXTENDED THE WINTER WEATHER ADVISORY FOR CALVERT/ST MARYS UNTIL 7AM TO MATCH THE REST. THEY HAVE A NORTHEAST WIND THAT HAS NO APPARENT WARM UP EVEN THOUGH IT IS CROSSING THE BAY WITH MID 40S WATER TEMPS. WINTER STORM WARNING FOR BALT- WASH METRO...NORTH TO THE MASON- DIXON...WEST ACROSS THE ALLEGHENY FRONT...SOUTH TO OUR SRN CWA BORDER...INCLUDES SHEN VLY...MD/VA PIEDMONT. MAIN WAVE OF FREEZING NOW REACHING KCHO. AREAS OF FREEZING DRIZZLE ACROSS THE REST OF THE REGION WILL BE OVERTAKEN BY THIS SWATH OF LIGHT TO MODERATE FREEZING RAIN. AS OF 01Z...1035MB SFC HIGH IS OVER NEW ENGLAND. WITH 1030MB MSLP OVER BALT-WASH...A NORTHEAST WIND HAS DEVELOPED...STRENGTHENING THE WEDGE/COLD AIR DAMMING.

-- End Changed Discussion --

 

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AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC

829 PM EST SUN DEC 8 2013

.NEAR TERM /UNTIL 6 AM MONDAY MORNING/...

 

-- Changed Discussion --

WENT AHEAD AND EXTENDED THE WINTER WEATHER ADVISORY FOR CALVERT/ST MARYS UNTIL 7AM TO MATCH THE REST. THEY HAVE A NORTHEAST WIND THAT HAS NO APPARENT WARM UP EVEN THOUGH IT IS CROSSING THE BAY WITH MID 40S WATER TEMPS. WINTER STORM WARNING FOR BALT- WASH METRO...NORTH TO THE MASON- DIXON...WEST ACROSS THE ALLEGHENY FRONT...SOUTH TO OUR SRN CWA BORDER...INCLUDES SHEN VLY...MD/VA PIEDMONT. MAIN WAVE OF FREEZING NOW REACHING KCHO. AREAS OF FREEZING DRIZZLE ACROSS THE REST OF THE REGION WILL BE OVERTAKEN BY THIS SWATH OF LIGHT TO MODERATE FREEZING RAIN. AS OF 01Z...1035MB SFC HIGH IS OVER NEW ENGLAND. WITH 1030MB MSLP OVER BALT-WASH...A NORTHEAST WIND HAS DEVELOPED...STRENGTHENING THE WEDGE/COLD AIR DAMMING.

-- End Changed Discussion --

 

 

Uh oh... thats not good... sounds like the HRRR may be right then

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"WENT AHEAD AND EXTENDED THE WINTER WEATHER ADVISORY FOR CALVERT/ST
MARYS UNTIL 7AM TO MATCH THE REST. THEY HAVE A NORTHEAST WIND THAT
HAS NO APPARENT WARM UP EVEN THOUGH IT IS CROSSING THE BAY WITH
MID 40S WATER TEMPS."

 

 

"AS OF 01Z...1035MB SFC HIGH IS OVER NEW ENGLAND. WITH 1030MB MSLP

OVER BALT-WASH...A NORTHEAST WIND HAS DEVELOPED...STRENGTHENING

THE WEDGE/COLD AIR DAMMING."

 

 

Also said I should expect rain and freezing rain until 1pm... now the only thing I'm worried about is that the best ice misses me to the south. (Snow to the north, ice to the south, the DC split lives another day)

 

ninja'd

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AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC

829 PM EST SUN DEC 8 2013

.NEAR TERM /UNTIL 6 AM MONDAY MORNING/...

 

-- Changed Discussion --

WENT AHEAD AND EXTENDED THE WINTER WEATHER ADVISORY FOR CALVERT/ST MARYS UNTIL 7AM TO MATCH THE REST. THEY HAVE A NORTHEAST WIND THAT HAS NO APPARENT WARM UP EVEN THOUGH IT IS CROSSING THE BAY WITH MID 40S WATER TEMPS. WINTER STORM WARNING FOR BALT- WASH METRO...NORTH TO THE MASON- DIXON...WEST ACROSS THE ALLEGHENY FRONT...SOUTH TO OUR SRN CWA BORDER...INCLUDES SHEN VLY...MD/VA PIEDMONT. MAIN WAVE OF FREEZING NOW REACHING KCHO. AREAS OF FREEZING DRIZZLE ACROSS THE REST OF THE REGION WILL BE OVERTAKEN BY THIS SWATH OF LIGHT TO MODERATE FREEZING RAIN. AS OF 01Z...1035MB SFC HIGH IS OVER NEW ENGLAND. WITH 1030MB MSLP OVER BALT-WASH...A NORTHEAST WIND HAS DEVELOPED...STRENGTHENING THE WEDGE/COLD AIR DAMMING.

-- End Changed Discussion --

 

Interesting description how they expect stronger CAD

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I tried to check the road to see if it was indeed just wet. It is, but not before I damn near fell trying to negotiate the sleet covered walk leading to the driveway. I hadnt realized that there was FZDZ. All places that have not been cleared of snow/sleet are an ice rink.

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