Historic Blizzard of 2009...
Thoughts on December 19-21th Snowstorm...
COMING FRIDAY NIGHT!!!
Timeline...
COMING FRIDAY NIGHT!!!
Radar...

Warnings...

NAO...

This is my current snow/no snow line...
Due to all snow as far south as southern North Carolina, I will post the snow/no snow line across northern areas...
Youngstown, OH - Oil City, PA - Du Bois, PA - Philipsburg, PA - Lewisburg, Pa - Bloomsburg, PA - Scranton, PA - New Milford, PA
*Areas north of line receive less than a dusting of snow, and areas to south see over .1inch of snow. This line may shift southward depending on dry air to north and eastern trends on mesoscale high resolution models.
Storm Reports...
Snow reports already over southern Middle Atlantic...
...SELECTED STORM TOTAL SNOWFALL IN INCHES FROM 700 AM EST FRI DEC
18 THROUGH 900 PM EST FRI DEC 18...
...KENTUCKY...
PINEVILLE 6.0
DORTON 3.0
...NORTH CAROLINA ...
BOONE 16.0
WEST ASHEVILLE 15.0
FLEETWOOD 14.0
WAYNESVILLE 13.8
WOODLAWN 13.0
GLENDALE SPRINGS 12.5
FLETCHER 12.0
MORGANTON 11.0
WEST JEFFERSON 10.0
ASHEVILLE 7.0
...VIRGINIA...
BLUEFIELD 13.0
BANDY 10.0
LAKE MONTICELLO 9.0
COVESVILLE 2SSE 8.5
COLUMBIA 7.0
ELK CREEK 7.0
ROANOKE 7.0
GREENVILLE 3E 6.5
BANDY 6.0
RICHMOND 3.0
CHARLOTTESVILLE 2.2
...WEST VIRGINIA...
SPANISHBURG 8.5
RAINELLE 8.0
LEWISBURG 7.8
ATHENS 7.0
Storm Impacts...
1. Historic amounts likely towards northern Virginia and all of Maryland up to two feet above 1000ft towards western Virginia.
2. Widespread travel impacts on busy holiday travel up and down east coast including I-95.
3. Blowing and drifting snow likely with potentially high drifts and whiteout conditions.
4. Mesoscale banding over northern Virginia, southeastern Pennsylvania, and Maryland may account for 2in/hr snow rates.
5. Widespread impacts with sharp cutoff on a very defined, but uncertain northern location in central Pennsylvania.
Snow Map...

*Note I am accounting for elevation, orographic lift, and mesoscale banding. The 12in+ zone is for those location courtesy of a slightly higher elevation than surrounding areas near 600' and for the optimum location in mesoscale banding. The northward extent in western Pennsylvania is courtesy of orographic lift for southern facing ridges. I do add a sharp cut-off between heavy snow and little to no snow, which will be difficult to pin down. It is already evident the effects the dry air is having on the north side of the system. This line may shift south depending on storm track, especially if HIRES NMM is correct. Keep in mind though despite the northwest trend in guidance on storm day this year, I did go pretty conservative for northern areas accounting for lack of lift and dry air.
Selected City Accumulations for the Northeast...
Hagerstown, MD- Heavy snow; 6-12in of snow.
Baltimore, MD- Heavy snow; 10-19in of snow.
Washington, DC- Blizzard conditions; 10-18in of snow.
Wilmington, DE- Heavy snow; 8-16in of snow.
Dover, DE- Blizzard conditions; 8-15in of snow.
Trenton, NJ- Blizzard conditions; 7-14in of snow.
New York City, NY- Blizzard conditions; 7-14in of snow.
Poughkeepsie, NY- Moderate snow; 3-6in of snow.
Binghamton, NY- Flurries and snow showers; C-1in of snow.
Albany, NY- Flurries and snow showers; C-1in of snow.
Hartford, CT- Heavy snow; 5-10in of snow.
Concord, NH- Mostly cloudy skies.
Providence, RI- Blizzard conditions; 5-10in of snow.
Worcester, MA- Moderate snow; 2-4in of snow.
Boston, MA- Moderate snow; 2-4in of snow.
Nantucket, MA- Blizzard conditions; 5-12in of snow.
Hyannis, MA- Blizzard conditions; 6-12in of snow.
Portland, ME- Flurries and clouds; Trace of snow.
Bangor, ME- Cloudy skies and breezy.
"Subject to Change"
Model Analysis
COMING FRIDAY NIGHT!!!
After the storm...
COMING FRIDAY NIGHT!!!
Please post storm reports in this blog from across the Northeast during the winter storm and please post location of observation in each report...
This blog is in progress. Check back soon...
"Here northeast of Harrisburg 2009-2010 winter statistics"
(Snow Stats)
Current Snow Cover- 9.00in with higher drifts
Monthly Total- 13.0in
Seasonal Total- 13.0in
Winter Weather Advisories- 2
Winter Storm Warnings- 1
Ice Storm Warnings- 0
Blizzard Warnings- 0
Freezing Rain Advisories- 1
Winter Storm Watches- 1
(Temperature Stats)
Lowest High Temperature- 28.0F
Lowest Low Temperature- 17.1F
Wind Chill Advisories- 0
Wind Chill Warnings- 0
(Winter Storms Stats)
Dec 5 - 1.5in - First accumulating snow of season
Dec 8-9 - 2.5in - Snow changed to plain rain
Dec 13 - .1in - Freezing rain
Dec 19 - 9.0in - Heavy snow, higher amounts to south
Reader Comments
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I'm so excited I probably will not be able to sleep tomorrow nite!!!!!
A possible WHITE CHRISTMAS in SOMD? Almost unheard of in this area!
Looks similar to 18Z. Also looks to be moving a bit slower. Another good run.
+1 Awesome. Now if that damn GFS could get on board.
The low is right off of Delaware, very close to the coast.
Just ignore my questions when they're that stupid. I'll be fine.
We'll see if the ECMWF or GFS follows the suite.
Believe me so do we in southcentral Pennsylvania especially considering we have PENNDOT treating our roads, or there lack of.
Impressive Omega fields likely suggest Thundersnow over Delmarva. Bufkit towards Salisburg, Maryland suggests a bit of elevated convectivity for a 3hr period of the height of the storm. Also impressive 50knot winds aloft along I-95.
Uh, so are we talking about a good old fashioned bomb here? if half true the whole i-95 corridor, VA to ME, is in for a bad (good) time
I live in Northern Delaware I already bought my bread and milk :)
A STORM MOVING UP THE COAST WILL BRING THE POTENTIAL FOR AN
ACCUMULATING SNOWFALL LATE FRIDAY NIGHT THROUGH SATURDAY NIGHT.
CHECK BACK FOR THE LATEST IN THE EVENT WINTER STORM WATCHES,
WARNINGS OR ADVISORIES ARE ISSUED.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE NEEDED SATURDAY AND SATURDAY NIGHT.
*Remember add in 15:1 snow ratios especially for those of us in the northwest such as the Lower Susquehanna Valley. Probably a good 12-16in for us verbatum.
SERVICE UNAVAILABLE
BAHAHAHAHHAHAHAHAHAHAHAAHAHHAHAHAHAHAHAHAHA
thanks for all the posts blizzard92. i'm off to bed dreaming of a 12+" snowfall. i'll be back on early tomorrow morn. Have a good night.
I've seen the models and all i can say is "WOW" i knew the westward trend would verify with this storm. It will spread a precip shield much farther to the north than forcasted. This will blow up into a very strong low. People should prepare now along the coast from the Carolinas to Boston. It will affect millions. 18z was a good run, the 06z NAM clobbers the entire east coast!
Anyways, it's good to be back and i'll also be back for the Christmas storm as well. Get ready guys, this is our winter!
-Weatherbob in Storm Mode
Glad to hear she is doing better. She will be in our thoughts.
Thanks for the warm welcome back. tty all soon!
-Weatherbob
May need another trip to store! anything over 4" and this county is shut down for a couple days.....
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