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Old 12-08-2013, 08:21 AM
 
Location: Near the Coast SWCT
83,607 posts, read 75,637,613 times
Reputation: 16662

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Heavy snow now in Fredrick, Maryland.

NOAA National Weather Service

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Old 12-08-2013, 08:24 AM
 
Location: Near the Coast SWCT
83,607 posts, read 75,637,613 times
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Not to forget the south.. Jim Cantore just took this in Dallas of I-45 southbound about 30 min ago.
That's Ice
https://twitter.com/weatherchannel/s...92833432764416

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Old 12-08-2013, 08:41 AM
 
Location: Northville, MI
11,879 posts, read 14,244,065 times
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How's Upstate doing. Any snow pack accumulation as of now.

As for Dallas, my uncle said that 635 was horrendous with regards to ice accumulation the last couple days. Average temperatures this time of the year are in the low-mid 60's F.

@snj 90: Ice is my worst enemy, especially since I don't drive on back roads, but on Route 1 north for 11 miles during my daily commute . If you have driven up here, you know that "empty back roads" in Middlesex & Monmouth counties are far and few in between.
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Old 12-08-2013, 08:45 AM
 
Location: Lincoln, NE
1,219 posts, read 1,512,257 times
Reputation: 566
Oregon December 6th snow

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Old 12-08-2013, 08:57 AM
 
Location: Near the Coast SWCT
83,607 posts, read 75,637,613 times
Reputation: 16662
Too cool not to share. Dallas again
https://twitter.com/allaccesswx/stat...12564117860352

" Ice Fog this morning in Dallas//Fort Worth "

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Old 12-08-2013, 09:11 AM
 
Location: Near the Coast SWCT
83,607 posts, read 75,637,613 times
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Instant sticking in Mid Atlantic.

Heavy Snow/Ice Discussion posted for area outlined in Blue http://www.spc.noaa.gov/products/md/md2072.html

Quote:
NWS STORM PREDICTION CENTER NORMAN OK
1005 AM CST SUN DEC 08 2013
AREAS AFFECTED...CNTRL AND NRN VA...MUCH OF WV...NRN MD...EXTREME
SRN PA

CONCERNING...WINTER MIXED PRECIPITATION

VALID 081605Z - 081900Z

SUMMARY...SNOW WITH RATES LOCALLY UP TO 1 INCH PER HOUR WILL
GRADUALLY TRANSITION TO FREEZING RAIN THIS AFTERNOON FROM NRN
WV...NRN VA AND NRN MD. PRECIPITATION SHOULD REMAIN MOSTLY SNOW
ACROSS SRN PA. FREEZING RAIN SHOULD PERSIST ACROSS PORTIONS OF SRN
WV AND CNTRL VA WITH RATES FROM .01 INCH PER HOUR TO OCCASIONALLY
OVER .1 INCH PER HOUR.

DISCUSSION...A WEDGE OF COLD AIR REMAINS IN PLACE EAST OF THE SRN
AND CNTRL APPALACHIANS WITH SFC TEMPERATURES AOB FREEZING OVER MUCH
OF THE MID ATLANTIC. AN EXPANSIVE AREA OF PRECIPITATION HAS
DEVELOPED AND WILL PERSIST OVER MUCH OF THIS REGION THROUGH THE
AFTERNOON IN ASSOCIATION WITH ISENTROPIC ASCENT ALONG A WARM
CONVEYOR BELT DOWNSTREAM FROM A RAPIDLY EJECTING SHORTWAVE TROUGH.
FREEZING RAIN WILL PERSIST FROM SRN WV THROUGH CNTRL VA INTO THE
AFTERNOON...AND A ZONE OF WEAK ELEVATED INSTABILITY WILL DEVELOP NWD
IN ASSOCIATION WITH THETA-E ADVECTION ALONG A STRENGTHENING LLJ
ACCOMPANYING THE EJECTING SHORTWAVE TROUGH. FREEZING RAIN RATES WILL
BE LOCALLY ENHANCED WITHIN THE NEWD MOVING CONVECTIVE ELEMENTS. THIS
ZONE OF INCREASING WARM ADVECTION WILL RESULT IN THE SNOW CURRENTLY
FROM NRN WV THROUGH NRN VA AND MD GRADUALLY TRANSITIONING TO
FREEZING RAIN AS A SIGNIFICANT WARM NOSE EXPANDS NWD ABOVE THE
SUB-FREEZING LAYER.
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Old 12-08-2013, 09:40 AM
 
Location: Near the Coast SWCT
83,607 posts, read 75,637,613 times
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Close up with actual OBS. Look at visibility and wind chills and even the Baro pressure.

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Old 12-08-2013, 09:53 AM
 
Location: Near the Coast SWCT
83,607 posts, read 75,637,613 times
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Freezing line at 4000 feet still over Central Virginia slow warming progress of mid levels. Interesting. You need that level above freezing at least for the changeover to happen today.

SPC Hourly Mesoscale Analysis

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Old 12-08-2013, 09:54 AM
 
Location: Near the Coast SWCT
83,607 posts, read 75,637,613 times
Reputation: 16662
Bear, Delaware

https://twitter.com/KimSchuss/status/409727147990061057

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Old 12-08-2013, 09:57 AM
 
Location: Near the Coast SWCT
83,607 posts, read 75,637,613 times
Reputation: 16662
December 8, 2013. Frederick County Maryland or Minnesota?

https://twitter.com/Danny_Favret/sta...25365280841728

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