February 2010 Climatic Summary

February temperatures region wide were quite cold, averaging 5 to 7 degrees below normal. Across northeast Wyoming and the Black Hills temperatures averaged from near normal in the higher elevations of the Black Hills to 1 to 3 degrees below normal on the plains of northeast Wyoming. On the plains of western South Dakota temperatures averaged 7 to 12 degrees below normal. All stations reported below normal temperatures. Gillette 4SE in northeast Wyoming was the warm spot averaging 0.6 degrees below normal. The cold spot was in Newell where temperatures averaged 11.9 degrees below normal.
Precipitation in February averaged 5 to 10 percent below normal. The wettest areas were across northwestern and far southwestern South Dakota where precipitation averaged 150 to 175 percent of normal. The driest areas were across south central South Dakota where precipitation was 50 to 75 percent of normal. The wet spots were at Hoover and Ardmore 2N, where precipitation was 184 percent of normal. Upton in northeastern Wyoming was the dry spot with only 20 percent of normal precipitation. The precipitation deficit for the month averaged 0.05 inches.
Snowfall in February was slightly above normal. Across the northern Black Hills and Bear Lodge Mountains 1 to 2 feet of snow fell. Elsewhere, on the plains of western
South Dakota and northeast Wyoming, snowfall was generally 4 to 9 inches, with 6 to 12 inches across far northwestern South Dakota.

February storm summary...

On February 4…An upper level storm system brought 3 to 7 inches of snow to the Black Hills, southwestern South Dakota and to the eastern and northern Foothills.
 
On February 13…An upper level disturbance brought 4 to 7 inches of snow to the Bear Lodge Mountains and the northern Black Hills.

LOCAL EXTREMES

Temperature Data

Rapid City

 

Lead

 

Gillette

 

 

Temperature

Date

Temperature

Date

Temperature 

Date

Maximum Temperature

47 degrees

26th

49 degrees

24th

48 degrees

24th

Minimum Temperature

-10 degrees

9th

-7 degrees

8th

-7 degrees

8th

Precipitation Data

Rapid City

 

Lead

 

Gillette

 

Monthly Data

Amount

Data

Amount

Date

Amount

Date

Precipitation

0.23 inches

 

1.15 inches

 

0.34 inches

 

Snowfall

7.9 inches

 

18.6 inches

 

4.5 inches

 

 

 

 

 

 

 

 

Daily Data

 

 

 

 

 

 

Maximum Precipitation

0.06 inches

1st

0.39 inches 

13th

0.08 inches

1st

Maximum Snowfall

3.7 inches

4th

7.2 inches

4th

2.0 inches

25th

REGIONAL EXTREMES

Temperature Data

 

Western South Dakota

 

 

Northeastern Wyoming

 

 

Temperature

Site

Date

Temperature

Site

Date

Maximum Temperature

55 degrees

Bear Ridge

4th, 25th

50 degrees

Wright 12W

28th

Minimum Temperature

-25 degrees

Camp Crook

9th

-24 degrees
-24 degrees

Devils Tower
Hulett

8th                   9th, 10th

Precipitation Data

 

Western South Dakota

 

 

Northeastern Wyoming

 

Monthly Data

Amount

Site

Date

Amount

Site

Date

Maximum Precipitation

1.36 inches

Deadwood 2NE

 

0.72 inches

Upton 14ENE

 

Minimum Precipitation

0.19 inches

Mission 14S

 

0.09 inches

Upton  

 

Maximum Snowfall

21.7 inches

Deadwood 2NE

 

11.8 inches

Sundance

 

Minimum Snowfall

1.0 inches

Mission 14S

 

1.5 inches

Dillinger

 

 

 

 

 

 

 

 

Daily Data

 

 

 

 

 

 

Maximum Precipitation

0.66 inches

Edgemont 23NW

5th

0.40 inches

Newcastle

5th

Maximum Snowfall

7.2 inches

Lead

4th

4.2 inches

Newcastle

5th

MONTHLY RECORDS

LOCATION

DATE

NEW RECORD

OLD RECORD

DATE

 

 

NO RECORDS SET

 

 



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