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Dec 16-17 Storm OBS Thread


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GFS parallel handled this pretty well on Sunday!!!  And were close to my thoughts then.  A little overdone on the northern fringes.

Post from Sunday on other thread:

Hey all.

IMO, as has been discussed a bit earlier and needs to be emphasized, for much of Upstate NY, the exact track of the slp is less important than the evolution of the mid and upper level features, particularly at the h850 and h700 levels.

The models currently indicating a more favorable set up with these features for our area is euro ensemble mean, Icon, para GFS, and probably extrapolated NAM.

I like where we are right now, particularly BGM, SYR and points SE.  

00z Parallel GFS "feels" like a nice candidate for verification.

 

image.thumb.png.307deea0b0f49b8b1518853a4b182014.png

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For posterity:  From BGM 12/17/2020 06z

1 am update...
Update to add Madison and southern Oneida in the winter storm
warning. Radar and the models show a band of very heavy snow
from Bradford County PA to Otsego County NY. The band is
expected to slowly pivot into southern Oneida and Madison
Counties between 3 and 6 AM before weakening. Upped snow amounts
under the band from the twin tiers into the upper Susquehanna
Region of NY. Reported snowfall rates as high as 3 to 5 inches
an hour. Totals now in the southern tier double digits.
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3 minutes ago, 96blizz said:

Just took my puppy for a walk - so peaceful out there!  Probably 6” or so and I think the best part was willing this one back from the dead up our way!

Just remember into the future....Pretty much all the models do not handle the placement of mesoscale banding features very well.  Usually, (but not all the time), placement seems 30-50 miles to the NW vs. model consensus...even at lead times of 12 hours!!!  Miller B's are complicated buggers.

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8 minutes ago, LakeEffectKing said:

Just remember into the future....Pretty much all the models do not handle the placement of mesoscale banding features very well.  Usually, (but not all the time), placement seems 30-50 miles to the NW vs. model consensus...even at lead times of 12 hours!!!  Miller B's are complicated buggers.

There will be a massive gradient here with me only getting a foot and everywhere north getting so much more.

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3 hours ago, lakeeffectkid383 said:

Snowing hardest it has whole event. Probably about 1” an hour right now. Wish this would last a few hours but it looks pretty transient with drying out behind it. 

Finished at 3.1” as if this am. The totals in Binghamton are incredible. Great pictures from everyone downstate 

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IEMBot BGM

@iembot_bgm

·

13m

At 5:50 AM EST, Endicott [Broome Co, NY] TRAINED SPOTTER reports HEAVY SNOW of 40.50 INCH https://mesonet.agron.iastate.edu/lsr/#BGM/202012171050/202012171050

 

IEMBot ALY

@iembot_aly

·

2m

At 6:27 AM EST, Clifton Park [Saratoga Co, NY] SOCIAL MEDIA reports HEAVY SNOW of 26.50 INCH. ESTIMATED BY PICTURE https://mesonet.agron.iastate.edu/lsr/#ALY/202012171127/202012171127

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057 
NOUS41 KBGM 171153
PNSBGM
NYZ009-015>018-022>025-036-037-044>046-055>057-062-PAZ038>040-043-044-047-
048-072-172353-

Public Information Statement
National Weather Service Binghamton NY
653 AM EST Thu Dec 17 2020

...SNOWFALL REPORTS...

Location                     Amount    Time/Date       Provider             

...New York...

...Broome County...
2 SW Nws Binghamton          41.0 in   0640 AM 12/17   NWS Employee         
Endicott                     40.5 in   0550 AM 12/17   Trained Spotter      
Nws Binghamton               39.1 in   0605 AM 12/17   Official NWS Obs               
Johnson City                 37.5 in   0455 AM 12/17   Public               
Vestal                       37.0 in   0600 AM 12/17   Public               
1 WSW Endwell                35.0 in   0510 AM 12/17   Public               
2 E Vestal                   31.7 in   0300 AM 12/17   NWS Employee         
2 NNE Johnson City           31.0 in   0500 AM 12/17   Public               
Nanticoke                    29.0 in   0636 AM 12/17   Public               
2 SW Vestal Center           29.0 in   0235 AM 12/17   NWS Employee         
2 NNW Port Crane             28.6 in   0615 AM 12/17   NWS Employee         
1 WSW West Corners           28.5 in   0245 AM 12/17   NWS Employee         
2 SE Union Center            27.0 in   0225 AM 12/17   NWS Employee         
Kirkwood                     24.0 in   0625 AM 12/17   Public               
Whitney Point                21.0 in   0157 AM 12/17   Public               

...Cayuga County...
Union Springs                4.0 in    0530 AM 12/17   Public               

...Chemung County...
1 ESE Horseheads North       13.0 in   0200 AM 12/17   Broadcast Media      

...Chenango County...
Preston                      29.1 in   0535 AM 12/17   Cocorahs             
1 N Mt Upton                 25.0 in   0455 AM 12/17   Public               
Sherburne                    21.0 in   0456 AM 12/17   Public               
Plymouth                     19.5 in   0400 AM 12/17   Public               
Greene                       15.0 in   0200 AM 12/17   Public               

...Cortland County...
2 N Harford                  15.0 in   0515 AM 12/17   Public               
2 NW Mcgraw                  11.5 in   0641 AM 12/17   Public               

...Delaware County...
Davenport                    9.5 in    0110 AM 12/17   Public               

...Oneida County...
New Hartford                 9.1 in    0601 AM 12/17   Trained Spotter      
Utica                        8.6 in    0445 AM 12/17   Trained Spotter      

...Onondaga County...
Jamesville                   8.0 in    0615 AM 12/17   Trained Spotter      
1 NW Syracuse                3.5 in    0345 AM 12/17   Broadcast Media      
Baldwinsville                2.6 in    0626 AM 12/17   Trained Spotter      

...Otsego County...
Edmeston                     24.0 in   0550 AM 12/17   Public               
3 NE Mt Vision               20.5 in   0500 AM 12/17   Public               
Unadilla                     19.5 in   0630 AM 12/17   Public               
Unadilla Forks               17.0 in   0600 AM 12/17   Public               
Laurens                      12.0 in   0100 AM 12/17   Public               

...Steuben County...
Caton                        18.0 in   0625 AM 12/17   Public               

...Sullivan County...
Kiamesha                     12.0 in   0200 AM 12/17   Public               

...Tioga County...
1 N Foster                   38.0 in   0630 AM 12/17   NWS Employee         
Apalachin                    38.0 in   0510 AM 12/17   Public               
Tioga Terrace                36.0 in   0445 AM 12/17   NWS Employee         
Newark Valley                35.0 in   0515 AM 12/17   Public               
Owego                        26.0 in   0317 AM 12/17   Public               

...Tompkins County...
Freeville                    16.0 in   0640 AM 12/17   Public               
Ithaca                       9.0 in    0455 AM 12/17   Public               
1 ESE Ithaca                 9.0 in    0345 AM 12/17   Trained Spotter      
Etna                         9.0 in    0315 AM 12/17   Trained Spotter      

...Yates County...
Italy Hill                   8.5 in    0500 AM 12/17   Public               
Penn Yan                     6.0 in    0445 AM 12/17   Public               

...Pennsylvania...

...Bradford County...
Litchfield                   40.0 in   0445 AM 12/17   Trained Spotter      
3 ENE Alba                   36.0 in   0445 AM 12/17   Public               
1 N Sayre                    32.0 in   0500 AM 12/17   Public               
1 SSW Sayre                  32.0 in   0332 AM 12/17   Public               
1 S Sayre                    31.0 in   0545 AM 12/17   Public               
Alba                         26.0 in   0420 AM 12/17   Trained Spotter      
Towanda                      25.5 in   0234 AM 12/17   Public               
3 WSW Browntown              20.0 in   0456 AM 12/17   Public               

...Lackawanna County...
1 NNE Oakhill                8.0 in    0115 AM 12/17   Public               
Scranton                     7.5 in    0100 AM 12/17   Amateur Radio        

...Luzerne County...
Dallas                       12.5 in   0100 AM 12/17   Amateur Radio        
Lehman                       12.0 in   1255 AM 12/17   Amateur Radio        
1 SE Albert                  10.0 in   0619 AM 12/17   Public               

...Susquehanna County...
Lenoxville                   21.5 in   0217 AM 12/17   Public               
1 N Montrose                 18.0 in   0400 AM 12/17   Public               
Forest City                  14.0 in   0630 AM 12/17   Public               

...Wayne County...
Hawley                       14.0 in   0620 AM 12/17   Public               
&&
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