Cold and Snowy January

 The weather pattern remained unchanged throughout January with one Alberta Clipper after another followed by pushes of Arctic air. This pattern again brought much below normal temperatures and above normal snowfall for January across central and northeast South Dakota as well as west central Minnesota.   Average monthly temperatures across the region were from 3.5 to 5.4 degrees below normal while snowfall was anywhere from 5 to 14 inches above normal.  Snowfall amounts ranged from 12.9 inches at Pierre to 20.4 inches at Watertown. All of the monthly snowfall totals for January were in the top ten snowiest for all eight locations. Mobridge and Kennebec had their third snowiest Januarys on record with 18 and 19 inches, respectively. Watertown had its fourth snowiest January with 20.4 inches.   Pierre and Timber Lake had their fifth snowiest January with 12.9 and 17 inches, respectively.  Aberdeen had its 8th snowiest January, while Sisseton and Wheaton both had their 9th snowiest January on record.  The water equivalent of 1.54 inches at Watertown was their seventh wettest January on record. 

JANUARY 2011

       

Temperature Data

Aberdeen

Sisseton

Wheaton

Watertown

Warmest Temperature / Date

40 / 28th

39 / 28th

35 / 29th

35 / 28th

Coldest Temperature / Date

-24 / 19th

-24 / 21st

-23 / 21st

-23 / 19th

Average High / Departure from Normal

15.8 / -5.6

15.1 / -5.8

N/A

14.8 / -5.2

Average Low / Departure from Normal

-4.1 / -4.7

-3.1 / -5.0

N/A

-4.4 / -4.3

Monthly Average / Departure from Normal

5.8 / -5.2

6.0 / -5.4

N/A

5.2 / -4.8

Precipitation Data

       

Monthly Precipitation / Departure from Normal

1.17 / +0.69

0.86 / +0.13

1.33 / +0.41

1.54 / +0.97

Monthly Snowfall / Departure from Normal

16.5 / +9.2

17.0 / +6.9

16.9 / +5.5

20.4 / +14.1

Most Precipitation in 24 hours / Date

0.26 / 10th 

0.29 / 31st

0.38 / 1st

0.62 / 31st

Most Snow in 24 hours / Date

4.8 / 10th

5.2 / 31st

3.4 / 11th

7.2 / 31st

         

Temperature Data

Pierre

Kennebec

Mobridge

Timber Lake

Warmest Temperature / Date

43 / 28th

43 / 28th

41 / 28th

39 / 28th

Coldest Temperature / Date

-17 / 19th

-20 / 19th

-24 / 12th

-19 / 11-12th

Average High / Departure from Normal

22.8 / -5.1

24.5 / -5.9

20.2 / -3.7

20.7 / -4.3

Average Low / Departure from Normal

2.9 / -4.8

3.1 / -4.0

-0.9 / -4.3

2.0 / -2.7

Monthly Average / Departure from Normal

12.9 / -4.9

13.8 / -5.0

9.7 / -4.0

11.4 / -3.5

Precipitation Data

       

Monthly Precipitation / Departure from Normal

0.93 / +0.41

1.01 / +0.68

0.62 / +0.29

0.93 / +0.52

Monthly Snowfall / Departure from Normal

12.9 / +7.5

19.0 / +14.3

18.0 / +12.8

17.0 / +11.4

Most Precipitation in 24 hours / Date

0.27 / 9th

0.26 / 9th

0.22 / 31st

0.25 / 9th

Most Snow in 24 hours / Date

3.0 / 9th

5.0 / 31st

6.0 / 9th

4.3 / 9th



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