February 18 2018

The quick hit of snow that fell across our region on Saturday February 17 was the second large snow event of the season.  That is not saying much, but it did have a bigger impact than expected. The snowfall range lined up pretty well with most of my forecast, with metro areas receiving a little more stickage and accumulation. This was a tough call since the air temperature just two days earlier was in the 70s, and the 60s the day prior. But, there is a simple explanation:

Baltimore’s BWI reported 2.2 inches of snow. That is second to our 2.8″ on December 9th. The seasonal total is now 8.7 inches.

The intensity of the snowfall rate was enough to compensate for the melting on the ground. Basically it snowed so hard, it didn’t have a chance to melt before the other flakes piled up. As a result, a layer of snow let more snow stick on time and accumulate… even on the roads. That made for tough travel in more of the metro areas than I suggested during the late afternoon and evening. Just that initial intensity made the difference in an extra inch accumulating.

Based on this, regardless of the snow totals and timing working out well, I must grade myself a B-. See my snow forecast maps and compare to the snow reports from the National Weather Service. Please go back to the social media post where you saw this article and give me your grade for my forecast.

The spotter reports for the NWS Baltimore/Washington region are below.

Compare

My First Call (also my Final Call)

The snow intensity and additional inch dropped my snow bands about 30 miles to the south. The exception was a dry pocket in eastern Frederick and northwestern Carroll Counties. This was seen on the HRRR model ahead of time. Once again, the NAM 3 Km Model preformed the best here.

 

National Weather Service Snow Totals

See the local maps and spotter list below

 

L❄️VE Snow ❤️

Over $5,000 has already been raised. THANK YOU!  This campaign is still going on…

My Fiancée Shannon is showing off her design for our L❄️VE Shirt.  Proceeds help the start-up of our new wellness program for Pediatric Oncology Patients. The big announcement is just two weeks away.  Click here or on the photo to see more…

Multiple Styles: Ladies Performance, Unisex, Kids, and two types of Hoodies

 

Local NWS Spotter Report Maps

See the list of reports below

 

 

 

 

 

********************STORM TOTAL SNOWFALL********************
LOCATION          STORM TOTAL     TIME/DATE   COMMENTS                   
SNOWFALL           OF 
/INCHES/   MEASUREMENT
DISTRICT OF COLUMBIA
...District of Columbia...
American University    0.8   800 PM  2/17  Broadcast Media         
MARYLAND
...Allegany County...
Ridgeley 1 W           5.0   730 PM  2/17  Trained Spotter         
Ridgeley 1 NW          4.5  1120 PM  2/17  Trained Spotter         
Frostburg 2 ESE        4.5   614 PM  2/17  Trained Spotter         
Frostburg 2 ENE        4.0  1252 AM  2/18  Trained Spotter         
Frostburg              4.0   900 PM  2/17  Trained Spotter         
Brady 1 W              3.5   830 PM  2/17  Trained Spotter         
Mount Savage           3.5   618 PM  2/17  Trained Spotter         
Cumberland             3.0   655 PM  2/17  Co-Op Observer          
...Anne Arundel County...
Bwi Airport            2.2  1200 AM  2/18  Airport                 
Fort Meade 2 N         1.6   538 PM  2/17  Trained Spotter         
Herald Harbor 1 NW     1.6   800 PM  2/17  Trained Spotter         
Green Haven 1 ESE      1.5   656 PM  2/17  Trained Spotter         
Crownsville 3 SSW      1.2   958 PM  2/17  Trained Spotter         
Odenton 1 WNW          1.2   500 PM  2/17  Trained Spotter         
Annapolis 1 NW         0.5   510 PM  2/17  Trained Spotter         
...Baltimore County...
Perry Hall 2 E         2.8   855 PM  2/17  Trained Spotter         
Brooklandville 2 NNW   2.5   730 PM  2/17  Trained Spotter         
Kingsville 1 NE        2.4   949 PM  2/17  Trained Spotter         
Kingsville 1 E         2.1   900 PM  2/17  Trained Spotter         
Long Green 2 NW        2.0   730 PM  2/17  Trained Spotter         
Catonsville 1 SSE      2.0   700 PM  2/17  Trained Spotter         
Glyndon 1 WSW          2.0   900 PM  2/17  Trained Spotter         
Reisterstown           2.0   755 PM  2/17  County Emrg Mgmt        
White Marsh 1 ENE      2.0   833 PM  2/17  Trained Spotter         
Norrisville 3 W        1.8   714 PM  2/17  Trained Spotter         
Perry Hall 1 NNE       1.8   940 PM  2/17  Trained Spotter         
Bentley Springs 1 E    1.8   800 PM  2/17  Trained Spotter         
Glyndon 1 SW           1.8   656 PM  2/17  Trained Spotter         
...Baltimore City...
Pikesville 3 SE        2.8   958 PM  2/17  Trained Spotter         
Pikesville 2 SE        2.6   800 PM  2/17  CoCoRaHS                
Lochearn 2 ENE         2.5   834 PM  2/17  Trained Spotter         
Arlington 2 ESE        2.0   739 PM  2/17  Broadcast Media         
Baltimore              1.0   700 PM  2/17  Broadcast Media         
...Carroll County...
Oakland                2.4   830 PM  2/17  Trained Spotter         
Eldersburg 1 SE        2.4   815 PM  2/17  Trained Spotter         
Lineboro 2 E           2.1   904 PM  2/17  Trained Spotter         
Westminster 2 SE       2.0   659 PM  2/17  Trained Spotter         
Gamber 1 WNW           1.7   845 PM  2/17  NWS Employee            
Westminster 1 W        1.5   738 PM  2/17  CoCoRaHS                
...Frederick County...
Thurmont 3 N           2.9   815 PM  2/17  NWS Employee            
Point Of Rocks 1 NE    2.8   851 PM  2/17  Trained Spotter         
Frederick 3 NW         2.1   800 PM  2/17  NWS Employee            
New Market 2 NW        1.5   700 PM  2/17  NWS Employee            
Bloomfield 2 WSW       1.3   625 PM  2/17  Trained Spotter         
...Harford County...
Norrisville 1 WSW      2.5   852 PM  2/17  CoCoRaHS                
Bynum 1 SW             2.0   930 PM  2/17  Trained Spotter         
...Howard County...
Gaither 2 SE           3.0   715 PM  2/17  CoCoRaHS                
Simpsonville           3.0   135 AM  2/18  Trained Spotter         
Simpsonville 1 SSE     2.7   708 PM  2/17  Trained Spotter         
Columbia               2.5   830 PM  2/17  NWS Employee            
Columbia 2 N           2.4   900 PM  2/17  Trained Spotter         
Ellicott City 1 NW     2.0   628 PM  2/17  Trained Spotter         
Elkridge 2 W           2.0   708 PM  2/17  Trained Spotter         
Ellicott City 2 ENE    2.0   805 PM  2/17  Trained Spotter         
Elkridge               2.0   842 PM  2/17  NWS Employee            
...Montgomery County...
Damascus 3 SSW         4.1   657 PM  2/17  Co-Op Observer          
Clarksburg 1 N         3.1   834 PM  2/17  Other Federal           
Clarksburg 2 SE        3.1   630 PM  2/17  Trained Spotter         
Germantown 1 NE        3.1   635 PM  2/17  NWS Employee            
Clarksburg             3.0   630 PM  2/17  Broadcast Media         
Montgomery Village 1   2.6   745 PM  2/17  CoCoRaHS                
Montgomery Village 2   2.2   735 PM  2/17  Trained Spotter         
Germantown 1 ESE       2.0   800 PM  2/17  NWS Employee            
Damascus               2.0   555 PM  2/17  County Emrg Mgmt        
Four Corners 1 NNW     2.0   526 PM  2/17  Trained Spotter         
Gaithersburg 2 ENE     2.0   707 PM  2/17  Trained Spotter         
Norbeck 1 ESE          1.8   800 PM  2/17  Trained Spotter         
Germantown 1 NW        1.8   654 PM  2/17  Trained Spotter         
Kensington             1.5   755 PM  2/17  County Emrg Mgmt        
...Washington County...
Pecktonville 3 NNW     3.5   745 PM  2/17  NWS Employee            
Long Meadow 1 SSE      2.0   736 PM  2/17  Trained Spotter         
Hancock                2.0   800 PM  2/17  Trained Spotter         
Boonsboro 3 NNE        1.9   800 PM  2/17  Trained Spotter         
Maugansville 1 NE      1.0   821 PM  2/17  Airport                 

 

 

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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