SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
December 14, 2017
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: December 13, 2017   2:51 PM MST 
Date Issued for:

December 14, 2017   6:00 AM MST

Date and Time Cancelled: December 14, 2017   3:00 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

9.1 18.4 NW   NA

02:00

8.6 26.5 NW 34.5 NA

03:00

4.6 23.0 NW 34.5 NA

04:00

12.2 24.2 NNW 35.7 0.00 IN

05:00

9.3 38.0 NNW 49.5 0.00 IN

06:00

29.2 33.4 NW 48.3 0.00 IN

07:00

20.3 24.2 NNW 40.3 0.00 IN

08:00

25.0 26.5 NW 39.1 0.00 IN

09:00

55.4 28.8 NW 42.6 0.00 IN

10:00

20.6 31.1 NW 39.1 0.00 IN

11:00

39.5 33.4 NW 39.1 0.00 IN

12:00

102.5 28.8 NNW 36.8 0.00 IN

13:00

26.3 28.8 NNW 36.8 0.00 IN

14:00

69.3 25.3 NNW 31.1 NA

15:00

48.7 20.7 NNW   NA

16:00

14.2 17.3 NW   NA

17:00

13.4 11.5 NW   NA

18:00

14.2 11.5 NW   NA

19:00

21.3 4.6 W   NA

20:00

38.5 5.8 WSW   NA

21:00

12.2 4.6 W   NA

22:00

16.2 5.8 WSW   NA

23:00

7.4 3.5 W   NA

24:00

11.7 6.9 WSW   NA

Averages

26.2 20.1      

 

PM10 24 hour Concentration = 26.2 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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