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SOUTH DAKOTA Department of
Agriculture & Natural Resources

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Air Quality

 

Air Quality Alert - High Winds
December 19, 2018
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: December 19, 2018   3:19 AM MST 
Date Issued for:

December 19, 2018   11:00 MST

Date and Time Cancelled: December 19, 2018   6:00 PM MST
PM Concentrations location: Credit Union
Weather Observations:  Ellsworth Air Force Base

Time

PM10
Concentration

Wind Speed

Direction

Peak Wind

Precipitation

(military)

(Credit Union -ug/m3)

(mph)

 

(mph >30)

(inches)

01:00

12.0 20 NNW   NA

02:00

6.2 12 NW   NA

03:00

12.5 18 NW   NA

04:00

7.4 18 NNW   NA

05:00

7.6 22 NW 31 NA

06:00

8.4 20 NW   NA

07:00

7.1 22 NW 35 NA

08:00

12.0 21 NW 30 NA

09:00

8.1 15 NW   NA

10:00

34.3 31 NW 43 NA

11:00

77.3 32 NW 46 NA

12:00

83.2 32 NW 43 NA

13:00

43.2 37 NW 48 NA

14:00

29.8 35 NW 43 NA

15:00

42.0 35 NW 45 NA

16:00

21.7 25 NW 35 NA

17:00

13.5 25 NW 39 NA

18:00

9.8 25 NNW 31 NA

19:00

8.8 22 NW   NA

20:00

6.2 24 NW 33 NA

21:00

11.3 25 NW 38 NA

22:00

8.6 25 NW 32 NA

23:00

11.7 23 NW   NA

24:00

8.1 29 NW 33 NA

Averages

20.5 24.7      

 

PM10 24 hour Concentration = 20.5 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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