Heavy Snow Band north of I-90 - January 18, 2019

Snow/Ice

...SNOWFALL REPORTS FOR JANUARY 18 2019...

Location                     Amount    Time/Date       Provider             
8 S Storden                  15.0 in   0545 PM 01/18   Public               
Wentworth                    14.0 in   0245 PM 01/18   Public               
3 N Colman                   14.0 in   0525 PM 01/18   Public               
Madison                      14.0 in   0630 PM 01/18   Public               
Avoca                        12.5 in   0400 PM 01/18   Public               
2 S Colman                   12.0 in   0400 PM 01/18   Public               
2 E Madison                  11.7 in   0900 AM 01/19   COOP                 
Windom                       10.8 in   0700 AM 01/19   CO-OP Observer       
3 ENE Hardwick               10.2 in   0417 PM 01/18   Public               
Chester 2n                   10.2 in   0700 AM 01/19   COOP                 
Flandreau                    10.0 in   0300 PM 01/18   Public               
2 N Chester                  9.8 in    0700 AM 01/19   CO-OP Observer       
Trent                        9.0 in    0206 PM 01/18   Public               
Edgerton                     8.0 in    0126 PM 01/18   Public               
Pipestone                    8.0 in    0150 PM 01/18   Newspaper            
Heron Lake                   8.0 in    0315 PM 01/18   Public               
Howard                       7.5 in    1257 PM 01/18   Public               
Brookings                    7.5 in    0245 PM 01/18   Public               
De Smet                      7.5 in    0738 PM 01/18   Public               
1 NE Baltic                  6.8 in    0457 PM 01/18   Public               
Huron                        6.5 in    0855 AM 01/19   Official NWS Obs     
Wolsey                       6.0 in    0450 PM 01/18   Public               
2 NE Worthington             6.0 in    0700 AM 01/19   CO-OP Observer       
6 S Oacoma                   5.7 in    0700 AM 01/19   COCORAHS             
Brookings                    5.7 in    0700 AM 01/19   COCORAHS             
Humboldt                     5.5 in    0800 PM 01/18   Public               
5 W Bruce                    5.0 in    0800 AM 01/19   COCORAHS             
Wall Lake                    5.0 in    0900 AM 01/19   COCORAHS             
4 WSW Sioux Falls            4.8 in    0700 AM 01/19   CO-OP Observer       
3 N Sioux Falls              4.6 in    0600 AM 01/19   Official NWS Obs     
2 NE Brookings               4.5 in    0800 AM 01/19   COOP                 
Spirit Lake                  4.1 in    0700 AM 01/19   CO-OP Observer       
3 ESE Sioux Falls            3.9 in    0700 AM 01/19   CO-OP Observer       
Marion                       3.6 in    0700 AM 01/19   COOP                 
3 SSE Sioux Falls            3.2 in    0700 AM 01/19   CO-OP Observer       
3 SW Sioux Falls             3.2 in    0700 AM 01/19   COCORAHS             
2 NE Academy                 2.0 in    0900 AM 01/19   COOP                 
Clayton                      1.8 in    0600 AM 01/19   COCORAHS             
4 SW Burke                   1.5 in    0700 AM 01/19   COCORAHS             
2 WNW Sergeant Bluff         0.9 in    0600 AM 01/19   Official NWS Obs     
2 E Yankton                  0.5 in    0700 AM 01/19   CO-OP Observer       
Sheldon                      0.5 in    0700 AM 01/19   COOP                 
Tyndall                      0.5 in    0800 AM 01/19   COOP                 
Remsen No. 2                 0.4 in    1100 AM 01/19   COOP                 
Orange City                  0.2 in    0700 AM 01/19   COOP                 
2 W Westfield                0.2 in    0800 AM 01/19   COCORAHS             

Observations are collected from a variety of sources with varying
equipment and exposures. We thank all volunteer weather observers 
for their dedication. Not all data listed are considered official.

$$

Radar

Loops and static images

	Midday Radar Image showing location of heavy snow band producing 1-2 inch per hour snowfall rates.	Midday Radar Loop showing the heavy snow band develop just north of Interstate 90.

Regional Radar Loop from 
2 am Friday through 3 am Saturday.

Additional Info

Why did some see a foot of snow on Friday and others minimal amounts?

Here's a closer look at how the forecast evolved from expecting widespread snow to a more narrow area of heavy snow. pic.twitter.com/Pe0c3cTPPQ

— NWS Sioux Falls (@NWSSiouxFalls) January 19, 2019

As of 2 pm Friday, around 9 inches of snow had been reported in Trent, South Dakota. Roughly 30 miles south, at the Sioux Falls Airport, only 3.2 inches snow had fallen through that time.