National Weather Service United States Department of Commerce

Back-to-Back Pacific Storms to Impact the West Coast; Heavy Snow in the Central Appalachians

Back-to-back powerful Pacific storm systems to impact the Pacific Northwest and northern California through the end of this week with heavy rain, flooding, strong winds, and higher elevation mountain snow. A strong, long-duration atmospheric river will accompany the Pacific storms, bringing excessive rainfall and flash flooding to southwest Oregon and northwest California through the week. Read More >

November 2021 finished above average in terms of temperatures, anywhere from 2 to 6 degrees above normal overall. Kennebec tied their 9th warmest November on record, and Aberdeen, Mobridge and Watertown all reached record daily highs on the 23rd or 29th (57 to 60 degrees).

Precipitation-wise, the area was drier than normal across the board by a few tenths to over half an inch. Most areas only picked up 0.10 to 0.75” of total moisture. Drought conditions remained unchanged from the beginning to end of the month with Moderate to Severe drought across portions of Central South Dakota. The combination of warm temperatures and a lack of moisture led to much below normal snowfall compared to normal for most, by as much as 6”. The main snow-producer this month was accompanied by strong winds, which led to blizzard conditions on Thursday night, Nov 11th into Friday morning, Nov 12th across portions of the Prairie Coteau area. Webster reported the most snow with this system with 5.0”, but these types of amounts were fairly localized.

A lack of moisture didn’t mean a lack of active weather from strong low pressure systems, however. In addition to the blizzard event, in which wind gusts of 50 to 70 mph were recorded across the area, high winds were recorded on the evening of Saturday the 13th (wind gusts of 55 to 70+ mph) and Wednesday the 17th (45 to 60+ mph) as well. Many high-profile vehicles were tipped due to these winds, and fire weather conditions were high to very high as a result.  

 

                           November 2021

       

Temperature Data

Aberdeen

Sisseton

Wheaton

Watertown

Warmest Temperature / Date

68 / 5, 6th

72 / 6th

68 / 6th

68 / 6th

Coldest Temperature / Date

3 / 25th

6 / 25th

4 / 25, 26th

3 / 25th

Average High / Departure from Normal

47.7 / +5.2

46.2 / +4.7

41.7 / +1.2

44.2 / +4.4

Average Low / Departure from Normal

24.2 / +4.8

26.5 / +4.1

25.4 / +2.6

24.6 / +3.3

Monthly Average / Departure from Normal

35.9 / +5.0

36.3 / +4.4

33.6 / +2.0

34.4 / +3.8

Precipitation Data

 

 

 

 

Monthly Precipitation / Departure from Normal

0.26 / -0.48

0.75 / +0.11

0.85 / -0.23

0.54 / -0.14

Most Precipitation in 24 hours / Date

0.13 / 10th

0.50 / 10th

0.64 / 10th

0.28 / 10th

Monthly Snowfall / Departure from Normal

0.3 / -6.2

1.2 / -3.4

1.3 / -2.6

1.4 / -3.1

Most Snow in 24 hours / Date

0.3 / 12th

0.9 / 12th

1.2 / 12th

1.3 / 12th

 

 

 

 

 

Temperature Data

Pierre

Kennebec

Mobridge

Timber Lake

Warmest Temperature / Date

70 / 6, 16th

75 / 6th

70 / 6th

68 / 6th

Coldest Temperature / Date

6 / 25th

5 / 25th

3 / 25th

4 / 25th

Average High / Departure from Normal

51.8 / +6.9

54.2 / +7.1

50.3 / +6.1

48.7 / +6.1

Average Low / Departure from Normal

25.9 / +2.7

26.9 / +4.6

26.0 / +3.2

25.4 / +3.7

Monthly Average / Departure from Normal

38.8 / +4.7

40.6 / +5.9

38.1 / +4.6

37.1 / +5.0

Precipitation Data

 

 

 

 

Monthly Precipitation / Departure from Normal

0.25 / -0.52

0.18 / -0.53

0.25 / -0.18

0.14 / -0.43

Most Precipitation in 24 hours / Date

0.14 / 8th

0.15 / 10th

0.23 / 10th

0.11 / 10th

Monthly Snowfall / Departure from Normal

T / -6.3

0 / -6.0

T / -3.6

0.1 / -4.3

Most Snow in 24 hours / Date

T / 11,12,24th

N/A

T / Several

0.1 / 24th

 


November 2021 temperature departures from normal, from the Midwestern Regional Climate Center

 

Precipitation totals (left) and departures from normal (right), from the Midwestern Regional Climate Center

 

Snowfall totals (left) and departures from normal (right), from the Midwestern Regional Climate Center

 

US Drought Monitor comparison from the beginning of the month to the end (little to no change)

 

Daily maximum wind gusts at Aberdeen, Watertown and Pierre through the month