Summary of the 5-6 January Winter Storm/Blizzard

Event Synopsis:
A strong “Alberta Clipper” type low pressure system tracked southeastward through the northern plains on Tuesday night and Wednesday. Sufficient Pacific moisture interacted with a cold, arctic airmass surging southward from Canada which resulted in widespread snowfall over much of South Dakota and west central Minnesota.  
The heaviest snowfall generally fell across far north-central and northeastern South Dakota, where a large swath of 6” or more of snowfall was reported. Even heavier snowfall in excess of 10” was reported over portions of the Sisseton Hills (Coteau) region of South Dakota. Further west towards the Missouri River, less snowfall accumulated, generally ranging from 2” to 5”.  Due to the cold temperatures, the snowflakes had low moisture content and were thus very light and fluffy.  

As this system tracked eastward into the Great Lakes region, strong north to northwest winds in the wake of the low gusted as high as 50 mph resulting in significant blowing and drifting snow across much of the area. The hardest hit areas were generally along the Missouri River valley, where blizzard conditions were reported for several hours during the afternoon and evening.  Visibility in these areas frequently dropped to below one quarter mile, with near whiteout conditions at times.  In fact, Interstate 90 between Sioux Falls and Rapid City was closed due to poor travel conditions.

SD DOT webcam images from Wednesday morning near Murdo, SD (1/6/10)

 

 

Below is a storm total snowfall graphic from the storm, and a tabular list of snowfall reports received at the NWS in Aberdeen.  



...FINAL STORM TOTAL SNOWFALL REPORTS FROM 5-6 JANUARY 2010...

BELOW IS A SUMMARY OF THE STORM TOTAL SNOWFALL REPORTS FROM WINTER
STORM/BLIZZARD ON 5-6 JANUARY 2010.

-------------------------------------------------------------------

LOCATION                  SNOW FALL     TIME/DATE
                           (INCHES)   OF OBSERVATION    LAT    LON
MINNESOTA

...BIG STONE COUNTY...
  1 N ORTONVILLE               5.5 M   139 PM 01/07   45.32N  96.44W
  5 S BEARDSLEY                6.0 E  1100 PM 01/06   45.49N  96.71W

...TRAVERSE COUNTY...
  BROWNS VALLEY                7.5 M  1100 PM 01/06   45.59N  96.83W

LOCATION                  SNOW FALL     TIME/DATE
                           (INCHES)   OF OBSERVATION    LAT    LON
SOUTH DAKOTA

...BROWN COUNTY...
  1 E ABERDEEN                 7.8 M   139 PM 01/07   45.47N  98.46W
  6 NE COLUMBIA                8.0 M   139 PM 01/07   45.68N  98.22W
  1 S COLUMBIA                 8.8 M   139 PM 01/07   45.60N  98.31W

...BUFFALO COUNTY...
  GANN VALLEY                  6.5 M   139 PM 01/07   44.03N  98.99W

...CODINGTON COUNTY...
  WATERTOWN                   11.0 M   139 PM 01/07   44.91N  97.17W

...DAY COUNTY...
  WEBSTER                     10.0 M   139 PM 01/07   45.34N  97.52W

...DEUEL COUNTY...
  CLEAR LAKE                  10.0 M   139 PM 01/07   44.77N  96.68W

...EDMUNDS COUNTY...
  BOWDLE                       7.0 M   600 PM 01/06   45.45N  99.66W
  ROSCOE                       9.0 M   139 PM 01/07   45.45N  99.33W

...HAMLIN COUNTY...
  HAYTI                        7.1 M   139 PM 01/07   44.66N  97.20W

...JONES COUNTY...
  MURDO                        7.4 M   139 PM 01/07   43.89N 100.71W

...MARSHALL COUNTY...
  ROY LAKE STATE PARK          6.0 M   139 PM 01/07   45.71N  97.43W

...ROBERTS COUNTY...
  4 NNE VICTOR                 7.0 M   139 PM 01/07   45.92N  96.80W
  3 W SISSETON                 7.3 M   139 PM 01/07   45.66N  97.11W
  WILMOT                       9.2 M   139 PM 01/07   45.41N  96.86W

...SPINK COUNTY...
  DOLAND                       6.1 M   139 PM 01/07   44.89N  98.10W
  TURTON                       7.5 M   139 PM 01/07   45.05N  98.10W
  REDFIELD                     8.1 E   139 PM 01/07   44.87N  98.52W

...WALWORTH COUNTY...
  MOBRIDGE                     7.2 M   139 PM 01/07   45.54N 100.44W

$$

 


Mike Fowle - SOO



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