October 2010 Climatic Summary

October was a warm month, with temperatures averaging 4 to 6 degrees above normal. All locations reported above normal temperatures. Gillette 4SE in northeast Wyoming was the warm spot averaging 7.6 degrees above normal.
The cold spot was in Winner where temperatures averaged 1.3 degrees above normal.
Precipitation in October average 10 to 30 percent below normal. The wettest area was across the northern Black Hills where precipitation averaged 175 to 250 percent of normal. The driest area was across northwestern South Dakota where precipitation averaged 20 to 40 percent of normal. The wet spot was at Deadwood 2NE where precipitation was 274 percent of normal. Lemmon was the dry spot with only 10 percent of normal precipitation. The precipitation deficit for the month averaged 0.27 inches.
Snowfall was light in October, averaging only 20 percent of normal. Across northeast Wyoming, the northern Black Hills and northwest South Dakota, 1 to 3 inches of snow fell. Elsewhere, a trace or no snow was reported.
 

October storm summary...

On October 8…A severe thunderstorm moved through Mellette and Todd counties. This storm produced 70 mph winds 2 miles east of Okreek in Todd County. Wind gusts of 60 mph were reported at Mission and 6 miles northeast of Wood in Mellette County.
 
On October 9…Thunderstorms produced heavy rains late on the 9th and into the 10th across the northern Black Hills where 3 to 5 inches of rain was reported. The heaviest rains fell at Lead with 4.64 inches and Deadwood 2NE where 4.12 inches fell. Creeks and Streams ran high but no flooding was reported.
 
On October 26 and 27…An intense storm system moved across the northern plains bringing strong northwest winds to the region. The storm produced sustained winds of 35 to 45 mph with gusts to 60 mph or more common. The strongest wind gust reported was at Union Center where winds gusted to 70 mph.

  

 LOCAL EXTREMES

Temperature Data

Rapid City

 

Lead

 

Gillette

 

 

Temperature

Date

Temperature

Date

Temperature 

Date

Maximum Temperature

90 degrees

5th

81 degrees

4th

88 degrees

4th

Minimum Temperature

23 degrees

28th

21 degrees

27th

22 degrees

28th

Precipitation Data

Rapid City

 

Lead

 

Gillette

 

Monthly Data

Amount

Data

Amount

Date

Amount

Date

Precipitation

0.32 inches

 

6.24 inches

 

0.93 inches

 

Snowfall

0.0 inches

 

1.8 inches

 

0.1 inches

 

 

 

 

 

 

 

 

Daily Data

 

 

 

 

 

 

Maximum Precipitation

0.10 inches

9th, 23rd

4.64 inches

10th

0.30 inches

12th

Maximum Snowfall

0.0 inches

 

1.8 inches

27th

0.1 inches

27th


REGIONAL EXTREMES

Temperature Data

 

Western South Dakota

 

 

Northeastern Wyoming

 

 

Temperature

Site

Date

Temperature

Site

Date

Maximum Temperature

94 degrees

Cottonwood 2E

6th

90 degrees

Weston 1E

4th

Minimum Temperature

15 degrees

Lodgepole 5SW Shadehill Res.

29th
29th

15 degrees

Upton 14 ENE

28th, 29th

Precipitation Data

 

Western South Dakota

 

 

Northeastern Wyoming

 

Monthly Data

Amount

Site

Date

Amount

Site

Date

Maximum Precipitation

6.24 inches

Lead

 

2.65 inches

Upton 14 ENE

 

Minimum Precipitation

0.14 inches

Lemmon

 

0.46 inches

Colony

 

Maximum Snowfall

3.5 inches

Ludlow 3SSE

 

3.2 inches

Upton 14 ENE

 

Minimum Snowfall

0.0 inches

Several Locations

 

0.0 inches

Several Locations

 

 

 

 

 

 

 

 

Daily Data

 

 

 

 

 

 

Maximum Precipitation

6.24 inches

Lead

10th

1.55 inches

Newcastle

10th

Maximum Snowfall

3.5 inches

Ludlow 3SSE

27th

2.2 inches

Upton 14 ENE

26th


MONTHLY RECORDS

LOCATION

DATE

NEW RECORD

OLD RECORD

DATE

Maurine 12SW

October

50.9 degree avg. temp.

49.4 degree avg. temp.

1980

 
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