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Early Season Winter Storm Moves into the Northeast; Cold Front Brings Snow Across the Northern Rockies into the Upper Midwest

The early season winter storm spreads to the Northeast bringing snow, sleet, and freezing rain to the region, in addition to gusty winds and coastal flooding. A series of cold fronts dropping southward from Canada will lead to snow across the Northern/Central Rockies into the Northern Plains and Upper Midwest. Read More >

June 2018 was above average temperature-wise, from 2 to 6+ degrees. Portions of the James River Valley were warmest, as below average precipitation allowed for drier and thus warmer air here. The first half of the month was record-breaking in some cases, including 99° on the 14th and 97° on the 5th at Mobridge, 99° on the 5th in Pierre, 95° on the 5th in Watertown (daily records).

Much of central South Dakota and west central Minnesota received above average precipitation while portions of the Coteau and the James Valley were below average. Accordingly, and on the heels of a dry May as well, the James River Valley is where, on June 1st, high winds associated with thunderstorm activity produced a dust storm which greatly reduced visibility during the evening hours. (https://www.weather.gov/abr/2018June1_Severe_Dust). Drought, severe in some cases, persisted through the month across portions of the James River Valley despite an overall active weather pattern. Bad luck can be attributed to this relatively small region of drought. On the contrary, bouts of heavy rain occurred across the area as well. Watertown for instance picked up a daily record 1.84” of rain on the 11th, 1.55” of which fell in one hour from 10 to 11 am. Localized flooding resulted in town. Daily rainfall records were also set at Pierre (1.84” on the 27th) and Mobridge (1.09” on the 17th).

As is typical in June, impactful severe weather developed on a number of days. A line of storms during the evening of June 5th into the morning of June 6th produced widespread straight-line wind damage from Corson/Dewey counties to Grant county. A wind gust of 100 mph was recorded near Lowry (https://www.weather.gov/abr/20180605WindAndHail). On June 16th, two tornadoes developed near Burdette, and another touched down briefly near Claire City on the 24th (several funnel clouds this day as well). Finally, two separate large hailstorms affected generally the same area of Dewey, Sully, Hughes and Stanley counties on the early morning of 27th and on the evening of the 29th. Hail scars were visible via satellite in the following days as large swaths of cropland and other vegetation were pulverized.

 

 JUNE 2018

       

Temperature Data

Aberdeen

Sisseton

Wheaton

Watertown

Warmest Temperature / Date

101 / 5th

92 / 5th

89 / 29,30th

94 / 5th

Coldest Temperature / Date

44 / 13th  

52 / 13th

55 / 13th

48 / 13th

Average High / Departure from Normal

84.7 / +7.3

82.1 / +4.8

80.4 / +3.1

79.9 / +3.2

Average Low / Departure from Normal

59.5 / +5.8

60.5 / +5.7

62.4 / +6.3

60.3 / +5.8

Monthly Average / Departure from Normal

72.1 / +6.5

71.3 / +5.2

71.4 / +4.7

70.1 / +4.5

Precipitation Data

       

Monthly Precipitation / Departure from Normal

2.72 / -0.98

2.98 / -0.76

4.55 / +0.57

3.45 / -0.13

Most Precipitation in 24 hours / Date

1.19 / 16th

1.21 / 24th

0.97 / 12th  

1.84 / 11th

         

Temperature Data

Pierre

Kennebec

Mobridge

*Timber Lake

Warmest Temperature / Date

99 / 5th

97 / 5th

99 / 14th

96 / 5th  

Coldest Temperature / Date

45 / 13th  

46 / 13th  

48 / 13th  

47 / 3rd, 13th

Average High / Departure from Normal

82.6 / +2.6

84.3 / +2.4

82.7 / +4.9

80.4 / +1.9

Average Low / Departure from Normal

58.9 / +3.5

59.3 / +3.5

60.1 / +6.3

56.5 / +2.9

Monthly Average / Departure from Normal

70.7 / +3.0

71.8 / +3.0

65.8 / +5.6

68.5 / +2.4

Precipitation Data

       

Monthly Precipitation / Departure from Normal

4.45 / +0.88

4.45 / +1.1

3.63 / +0.47

3.61 / +0.31

Most Precipitation in 24 hours / Date

1.84 / 27th  

1.12 / 9th

1.09 / 17th

1.16 / 17th

 

 

June 2018 temperature departures, from the Midwestern Regional Climate Center

 

June 2018 precipitation departures, from the Midwestern Regional Climate Center

June 2018 precipitation totals, from the Midwestern Regional Climate Center

 

Drought Monitor at the beginning and end of the month, from http://droughtmonitor.unl.edu/