November 2006 Climatic Summary

The first three days of November were cool and dry. An upper level high pressure system built into the region from November 4 through 8 bringing more dry weather and well above normal temperatures. On November 7 and 8 many locations on the plains of western South Dakota saw high temperatures push into the 70s. An upper level storm system moved across the area on November 9 and 10. This storm brought snow and cold temperatures with it. On the plains of northeastern Wyoming and western South Dakota 2 to 4 inches of snow fell with 4 to 7 inches in the northern and eastern foothills and 8 to 14 inches in the northern Black Hills and Bear Lodge Mountains. An upper level trough remained over the Northern Plains from November 11 through 15. This trough brought near to slightly cooler than normal temperatures and some light snow to the northern Black Hills and Bear Lodge Mountains. From November 16 through 24 high pressure remained over the region bringing mostly dry conditions and well above normal temperatures. Another upper level trough moved into the Northern Plains from November 25 through the end of the month. This system brought colder than normal temperatures and some light snow to the northern Black Hills and Bear Lodge Mountains, with only a few snow flurries on the plains of western South Dakota and northeastern Wyoming.

Temperatures averaged slightly above normal in November. Averages ranged from 3.3 degrees above normal at Deadwood 2NE and Spearfish to 3.3 degrees below normal at Camp Crook.

November saw a continuation of below normal precipitation in western South Dakota with above normal precipitation occurring in portions of northeastern Wyoming. Rainfall deficits for the month averaged 0.16 inches. Precipitation across northern Campbell county in northeastern Wyoming and in the Bear Lodge Mountains averaged 140 to 180 percent of normal. Elsewhere in northeastern Wyoming and across western South Dakota precipitation averaged 60 to 80 percent of normal. Precipitation ranged from 226 percent of normal at Dillinger in northeastern Wyoming to 0 percent in Lemmon where only a trace of precipitation was recorded. Snowfall was slightly below normal with 10 to 15 inches being reported in the northern Black Hills and Bear Lodge mountains and 3 to 6 inches on the plains of northeastern Wyoming and western South Dakota.

LOCAL EXTREMES

Temperature Data

Rapid City

 

Lead

 

Gillette

 

 

Temperature

Date

Temperature

Date

Temperature 

Date

Maximum Temperature

79 degrees

7th

68 degrees

7th

75 degrees

7th

Minimum Temperature

-1 degrees

29th,  30th

-2 degrees

28th

-6 degrees

30th

Precipitation Data

Rapid City

 

Lead

 

Gillette

 

Monthly  Data

Amount

Data

Amount

Date

Amount

Date

Precipitation

0.47 inches

 

1.03 inches

 

0.56 inches

 

Snowfall

6.8 inches

 

10.6 inches

 

6.0 inches

 

 

 

 

 

 

 

 

Daily Data

 

 

 

 

 

 

Maximum Precipitation

0.27 inches

10th

0.40 inches

10th

0.30 inches

10th

Maximum Snowfall

4.5 inches

10th

4.3 inches

10th

6.0 inches

10th

REGIONAL EXTREMES

Temperature Data

 

Western South Dakota

 

 

Northeastern Wyoming

 

 

Temperature

Site

Date

Temperature

Site

Date

Maximum Temperature

80 degrees

Winner        Wood          Porcupine 11N  

7th                    8th                      9th

77 degrees

Moorcroft

8th

Minimum Temperature

-9 degrees

Antelope Range

29th

-10 degrees

Upton 14ENE

29th,  30th

Precipitation Data

 

Western South Dakota

 

 

Northeastern Wyoming

 

Monthly Data

Amount

Site

Date

Amount

Site

Date

Maximum Precipitation

1.36 inches

Deadwood 2NE

 

1.29 inches

Dillenger

 

Minimum Precipitation

Trace

Lemmon

 

0.14 inches

Rockypoint 1N

 

Maximum Snowfall

13.7 inches

Deadwood 2NE

 

11.2 inches

Upton 14ENE

 

Minimum Snowfall

Trace

Lemmon

 

1.5 inches

Colony

 

 

 

 

 

 

 

 

Daily Data

 

 

 

 

 

 

Maximum Precipitation

0.78 inches

Cedar Butte

15th

0.85 inches

Upton

10th

Maximum Snowfall

8.0 inches

Rapid 4NW

10th

8.0 inches

Moorcroft

10th

 MONTHLY RECORDS

LOCATION

DATE

NEW RECORD

OLD RECORD

DATE

Lemmon

November

Trace Snowfall

Trace Snowfall

2004, 2002, 1963, 1949

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