December 16 2017

The final measurements are in from Friday’s snow. This marks the third event in a week and brings the seasonal total for Baltimore’s BWI up to 3.8″. That is more snow than all of last winter, proving my blanket call that it will snow more. But in all seriousness, this puts us ahead of an average December and the most snow to date since December 2009.

Below is a a map of my forecast, then compare to the snow reports. There were good and bad things about my forecast. The worst part of the day was my website crashing. I sincerely apologize, but have been assured by my web team that the problem has been fixed. As far as my forecast:  Please and then give me a grade.

What went right:

The timing of the snow building in the morning and ending for most between 4 and 5 PM

The peak snow time and worst road conditions between 2 and 5 PM. This justified many schools that decided to closer early.

The heaviest snow was on the east side of Baltimore.

My wider snow ranges accounting for the bands and sticking snow. My middle range was a dusting to 2 inches. My big range was between 1 and 3 inches including Baltimore, Harford, and Cecil Counties in Maryland.

What went wrong:

  • I had stated ambience snow for metro Baltimore, and that was correct for the morning, but the afternoon ramp up was only a lat call on my part. I hope you saw my report early on Friday in time to prepare.
  • The snow needed adjustment in the last day leading up and over performed.
  • The snow amounts in Southern Maryland did not stick. That was a poor showing.
  • Overall, the timing for the snowfall and poor road conditions worked out as expected, but it was late catching up.

 

GRADE: I give myself a B. I’d love to hear your thoughts.

My Call For Snowfall:

  • A: Back edge of flurries or light snow that may drop of coating.
  • B: Between a coating to 2 inches. This depends on where the snow bands set up.
  • C: Between 1 to 3 inches. This depends on where the snow bands set up.
  • D: May have rain or sleet during the day and change to snow after 3 PM. Snow this evening could drop a coating to 1 inch and lead to slick travel.

 

 

Snow Report:

 

Snow Spotter Reports:

DISTRICT OF COLUMBIA
...District of Columbia...
Dalecarlia Reservoir   0.5   800 AM 12/16  Co-Op Observer          
MARYLAND
...Anne Arundel County...
Chelsea Beach          0.8   800 AM 12/16  CoCoRaHS                
1 NNE Fort Meade       0.8   700 AM 12/16  CoCoRaHS                
Bwi Airport            0.7   700 PM 12/15  Airport                 
3 SW Londontowne       0.6   700 AM 12/16  CoCoRaHS                
1 NW Herald Harbor     0.5   550 PM 12/15  Trained Spotter         
1 SSE Crofton          0.5   537 PM 12/15  NWS Employee            
Ridgeway               0.5   816 AM 12/16  CoCoRaHS                
1 NNE Odenton          0.5   700 AM 12/16  CoCoRaHS                
3 E Laurel             0.4   700 AM 12/16  CoCoRaHS                
Deale                  0.3   700 AM 12/16  CoCoRaHS                
...Baltimore County...
1 NE Kingsville        2.0   458 PM 12/15  Trained Spotter         
Long Green             1.9   700 AM 12/16  CoCoRaHS                
1 NNE Upper Falls      1.8   530 PM 12/15  Trained Spotter         
1 E Kingsville         1.8   430 PM 12/15  CoCoRaHS                
1 N Middle River       1.6   529 PM 12/15  Trained Spotter         
2 ESE White Marsh      1.5   700 AM 12/16  CoCoRaHS                
2 NW Long Green        1.5   400 PM 12/15  Trained Spotter         
1 ENE White Marsh      1.5   450 PM 12/15  Trained Spotter         
2 NE Jacksonville      1.3   834 AM 12/16  CoCoRaHS                
3 NW Long Green        1.2   700 AM 12/16  CoCoRaHS                
1 W Parkton            0.9   915 PM 12/15  Trained Spotter         
2 NNW Brooklandville   0.9   340 PM 12/15  Trained Spotter         
1 E Bentley Springs    0.8   400 PM 12/15  Trained Spotter         
Reisterstown           0.8   506 PM 12/15  County Emrg Mgmt        
1 SW Glyndon           0.5   430 PM 12/15  Trained Spotter         
...Baltimore City...
1 N Hamilton           1.3   600 AM 12/16  CoCoRaHS                
SE Pimlico             1.0   400 PM 12/15  Trained Spotter         
2 ESE Arlington        1.0   700 PM 12/15  Broadcast Media         
...Calvert County...
Dunkirk 3.2nne         0.2   800 AM 12/16  CoCoRaHS                
6 NNE Eagle Harbor     0.2   700 AM 12/16  CoCoRaHS                
...Carroll County...
Gamber                 0.8   700 AM 12/16  CoCoRaHS                
NE Oakland             0.5   330 PM 12/15  Trained Spotter         
1 SE Eldersburg        0.3   400 PM 12/15  Trained Spotter         
3 NE Sykesville        0.3   700 AM 12/16  CoCoRaHS                
3 NE Taneytown         0.1   700 AM 12/16  CoCoRaHS                
...Frederick County...
2 SW Buckeystown       0.5   600 AM 12/16  CoCoRaHS                
Thurmont               0.5   700 AM 12/16  CoCoRaHS                
3 N Thurmont           0.5   700 AM 12/16  CoCoRaHS                
Emmitsburg             0.5   349 PM 12/15  Trained Spotter         
2 NNW New Market       0.3   800 AM 12/16  CoCoRaHS                
...Harford County...
1 W Bel Air            2.0   700 AM 12/16  CoCoRaHS                
1 NNE Bel Air          2.0   510 PM 12/15  Trained Spotter         
1 SW Bynum             2.0   529 PM 12/15  Trained Spotter         
Norrisville            1.4   700 AM 12/16  CoCoRaHS                
...Howard County...
Elkridge               0.8   512 PM 12/15  NWS Employee            
1 W Elkridge           0.6   700 AM 12/16  CoCoRaHS                
1 NW Ellicott City     0.5   521 PM 12/15  Trained Spotter         
1 NNE Laurel           0.5   700 AM 12/16  CoCoRaHS                
2 NNE Laurel           0.5   700 AM 12/16  CoCoRaHS                
1 N Columbia           0.4   700 AM 12/16  CoCoRaHS                
2 N Columbia           0.4   700 AM 12/16  CoCoRaHS                
...Montgomery County...
Damascus 3 Ssw Coop    0.3   700 AM 12/16  Co-Op Observer          
1 W Colesville         0.3   700 AM 12/16  CoCoRaHS                
Poolesville            0.3   800 AM 12/16  CoCoRaHS                
Takoma Park            0.3   700 AM 12/16  CoCoRaHS                
3 SSW Damascus         0.3   641 PM 12/15  Co-Op Observer          
1 ESE Norbeck          0.3   500 PM 12/15  Trained Spotter         
2 SSE Damascus         0.3   630 AM 12/16  CoCoRaHS                
1 SE Olney             0.3   700 AM 12/16  CoCoRaHS                
1 E Aspen Hill         0.2   700 AM 12/16  CoCoRaHS                
1 ENE Montgomery Vil   0.2   500 PM 12/15  Trained Spotter         
1 N White Oak          0.2   700 AM 12/16  CoCoRaHS                
Potomac                0.2   700 AM 12/16  CoCoRaHS                
Montgomery Village     0.2   700 AM 12/16  CoCoRaHS                
Congressional Manor    0.1   700 AM 12/16  CoCoRaHS                
4 NE Leesburg          0.1   800 AM 12/16  CoCoRaHS                
...Prince Georges County...
1 W Tantallon          0.3   700 AM 12/16  CoCoRaHS                
Oxon Hill Coop         0.3   700 AM 12/16  Co-Op Observer          
Oxon Hill              0.3   700 AM 12/16  CoCoRaHS                
Morningside            0.2   700 AM 12/16  CoCoRaHS                
2 E Baden              0.2   700 AM 12/16  CoCoRaHS                
...St. Marys County...
3 NW California          T   200 PM 12/15  Trained Spotter         
California               T   256 PM 12/15  Trained Spotter - Sleet 
...Washington County...
3 NNE Boonsboro        0.2   200 PM 12/15  Trained Spotter 
...Caroline County...
1 ENE Greensboro       0.5   700 AM 12/16  CoCoRaHS
...Cecil County...
5 NW Elkton            2.3   700 PM 12/15  CoCoRaHS
...Kent County...
Millington             1.6   805 PM 12/15  Trained Spotter
...Queen Anne`s County...
Sudlersville           2.0   930 PM 12/15  Social Media
...Talbot County...
1 SSW Easton           0.5   700 AM 12/16  CoCoRaHS
1 NNW Easton           0.4   800 AM 12/16  CoCoRaHS
Saint Michaels         0.2   730 AM 12/16  CoCoRaHS
PENNSYLVANIA
York and Lancaster Counties reported between 1 and 1.5 inches
DELAWARE
...Kent County...
Smyrna                 1.3   830 PM 12/15  DEOS
2 W Milfrod            1.0   800 AM 12/16  CoCoRaHS
W Dover                0.8   830 PM 12/15  DEOS
4 NE Felton            0.7   800 AM 12/16  CoCoRaHS
Dover                  0.6   830 PM 12/15  DEOS
Frederica              0.6   830 PM 12/15  DEOS
2 ENE Harrington       0.5   840 AM 12/16  CoCoRaHS
Harrington             0.5   830 PM 12/15  DEOS
5 WNW Harrington       0.5   605 PM 12/15  Trained Spotter
Woodside               0.4   830 PM 12/15  DEOS
...New Castle County...
Marshallton            3.2   600 PM 12/15  Trained Spotter
5 N Newark             3.0   700 AM 12/16  CoCoRaHS
Brandywine             3.0   610 PM 12/15  Broadcast Media
Prices Corner          3.0   745 PM 12/15  Trained Spotter
2 WNW Glasgow          2.4   700 AM 12/16  CoCoRaHS
2 S Newark             2.4   512 PM 12/15  CoCoRaHS
Middletown             2.3   347 AM 12/16  Trained Spotter
Greenville             2.1   830 PM 12/15  DEOS
New Castle County Ai   2.1   700 PM 12/15  ASOS/AWOS
Hockessin              2.0   830 PM 12/15  DEOS
Wilmington Manor       2.0   815 PM 12/15  Social Media
Newark                 2.0   503 PM 12/15  Trained Spotter
N Wilmington           2.0   540 PM 12/15  Trained Spotter
Talley Brook           1.9   830 PM 12/15  DEOS
Port Penn              1.9   830 PM 12/15  DEOS
Claymont               1.9   830 PM 12/15  DEOS
Glasgow                1.7   830 PM 12/15  DEOS
Blackbird              1.7   830 PM 12/15  DEOS
2 ESE Barksdale        1.5   750 AM 12/16  CoCoRaHS
4 NNW Middletown       1.5   700 AM 12/16  CoCoRaHS
New Castle             1.3   830 PM 12/15  DEOS
...Sussex County...
3 SE Milford           0.5   700 AM 12/16  CoCoRaHS
Seaford                0.5   700 AM 12/16  CoCoRaHS
7 E Selbyville         0.5   600 AM 12/16  CoCoRaHS
4 SW Lewes             0.3   700 AM 12/16  CoCoRaHS
4 NNE Laurel           0.3   700 AM 12/16  CoCoRaHS
7 ENE Dagsboro         0.1   700 AM 12/16  CoCoRaHS
4 E Delmar             0.1   700 AM 12/16  CoCoRaHS

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Snowstix- We Need You To Measure Snow Too

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Also See:

My Winter Outlook 2017-2018 for more snow

Maryland Winters

La Nina Formed: What it could mean to our winter

NOAA Winter Outlook: Not The Best But Not The Worst For Snow

Two Farmers Almanacs Winter 2018 Outlooks

Winter Weather Folkore: Suggestions from Animals and Crops

First Frost and Freeze Dates For Maryland (southern PA and northern VA)

My Preliminary Winter Outlook Notes

Low Snow Winters In Baltimore: To Repeat Or Not Repeat

NOAA Ranks Blizzard 2016 4th Worst Snowstorm On Record

Blizzard 2016 Record Top Snowstorm: Area Totals

Extreme Weather of 2015 balanced out on both ends