March 2006 Climatic Summary

The first 9 days of March were mild and dry with cooler air beginning to filter into the region on the 10th.  A powerful snowstorm struck western South Dakota on the 12th. Snowfall of 12 to 24 inches fell across the southern Black Hills…southwestern South Dakota and portions of south central South Dakota. Lesser amounts of snow fell to the north and west with little or no snow in far northern portions of western South Dakota and across much of northeastern Wyoming. From the 12th through the 19th the weather remained cool with some light precipitation.

A second powerful snowstorm struck western South Dakota on the 19th and 20th of the month. Snowfall of 10 to 20 inches fell along and south of a Rapid City to Philip line with 3 to 6 inches across the northern portions of western South Dakota and 1 to 5 inches in northeastern Wyoming. Snowfall totals for the month of March were 20 to 30 inches across the Black Hills…southwestern and south central South Dakota. Less than 10 inches fell across northwestern South Dakota and in northeastern Wyoming. The rest of March remained mainly dry with cooler than normal temperatures lasting through the 27th. The last 4 days of the month saw mild temperatures and dry weather.

Temperatures averaged slightly below normal in March. In northeastern Wyoming and the Black Hills temperatures averaged 2 to 3 degrees above normal…while on the South Dakota plains temperatures averaged 2.5 to 3.5 degrees below normal. Averages ranged from 4.4 degrees above normal at Devil’s Tower in northeastern Wyoming to 4.6 degrees below normal at Wood.

March was a wet month across South Dakota with drier than normal conditions across northeastern Wyoming. Precipitation averaged 50 to 80 percent of normal in northeastern Wyoming with only Newcastle reporting above normal precipitation. Across South Dakota…precipitation averaged 150 to 250 percent of normal with only a few locations in the Black Hills and far western South Dakota reporting below normal precipitation. Precipitation ranged from 273 percent of normal at Oral to 22 percent of normal at Camp Crook.

LOCAL EXTREMES

Temperature Data

Rapid City

 

Lead

 

Gillette

 

 

Temperature

Date

Temperature

Date

Temperature 

Date

Maximum Temperature

72 degrees

29th

60 degrees

28th and 29th

68 degrees

28th

Minimum Temperature

10 degrees

17th

8 degrees

13th

6 degrees

13th

Precipitation Data

Rapid City

 

Lead

 

Gillette

 

Monthly  Data

Amount

Data

Amount

Date

Amount

Date

Precipitation

1.65 inches

 

2.57 inches

 

0.93 inches

 

Snowfall

27.0 inches

 

26.5 inches

 

6.2 inches

 

 

 

 

 

 

 

 

Daily Data

 

 

 

 

 

 

Maximum Precipitation

0.53 inches

20th

0.52 inches

12th and 27th

0.50

13th

Maximum Snowfall

9.2 inches

20th

6.5 inches

12th

3.1 inches

13th

REGIONAL EXTREMES

Temperature Data

 

Western South Dakota

 

 

Northeastern Wyoming

 

 

Temperature

Site

Date

Temperature

Site

Date

Maximum Temperature

77 degrees

Wood

1st

70 degrees

Devil's Tower

29th

Minimum Temperature

-3 degrees

 Ardmore 2N   Medicine Mtn.
Hill City

14th 
11th and 22nd
14th

1 degree

Wright 12W

13th

Precipitation Data

 

Western South Dakota

 

 

Northeastern Wyoming

 

Monthly Data

Amount

Site

Date

Amount

Site

Date

Maximum Precipitation

2.95 inches

Cedar Butte

 

1.08 inches

Upton

 

Minimum Precipitation

0.14 inches

Camp Crook

 

0.30 inches

Colony

 

Maximum Snowfall

37.1 inches

Mt. Rushmore

 

15.5 inches

Sundance

 

Minimum Snowfall

4.0 inches

Camp Crook

 

4.5 inches

Devil's Tower  Colony

 

 

 

 

 

 

 

 

Daily Data

 

 

 

 

 

 

Maximum Precipitation

1.98 inches

Cedar Butte

20th

0.50 inches

Gillette 

13th

Maximum Snowfall

15.0 inches

Hot Springs

20th

6.0 inches

Dillinger  Moorcroft

12th                        13th

MONTHLY RECORD

LOCATION

DATE

NEW RECORD

OLD RECORD

DATE

Hot Springs

3/20/2006

15.0 inches of snow  (all-time)

12.0 inches of snow

4/18/1970

 

 

 

 

1/4/1949

Hot Springs

3/20/2006

15.0 inches of snow

12.0 inches of snow

3/27/1975

Interior

March

28.5 inches of snow

19.5 inches of snow

1977

Mt. Rushmore

March

37.1 inches of snow

37.0 inches of snow

1971

Pactola Dam

March

35.3 inches of snow

25.7 inches of snow

2002

Winner

March

31.0 inches of snow

27.5 inches of snow

1987

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