SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
October 29, 2017
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: October 29, 2017   3:09 AM MST 
Date Issued for:

October 29, 2017   9:00 AM MST

Date and Time Cancelled: October 29, 2017   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

5.2 6.9 WSW   NA

02:00

6.9 10.4 W   NA

03:00

5.7 9.2 SW   NA

04:00

2.0 6.9 SW   NA

05:00

2.3 10.4 NW   NA

06:00

4.5 21.9 NNW   NA

07:00

33.7 25.3 NNW 40.3 NA

08:00

219.2 27.6 NNW 41.4 NA

09:00

30.5        

10:00

23.4 28.8 NNW 43.7 NA

11:00

67.5 27.6 NNW 36.8 0.00 IN

12:00

16.0 28.8 NNW 40.3 0.00 IN

13:00

9.4 31.1 NW 40.3 0.00 IN

14:00

10.6 29.9 NW 40.3 NA

15:00

8.5 26.5 NNW 36.8 0.00 IN

16:00

4.3 24.2 NW 33.4 NA

17:00

3.8 19.6 NW 31.1 NA

18:00

7.7 15.0 NNW   NA

19:00

13.2 24.2 NW 34.5 0.00 IN

20:00

11.6 26.5 NNW 36.8 NA

21:00

33.4 25.3 NW 34.5 NA

22:00

7.7 29.9 NW 38.0 0.00 IN

23:00

15.5 35.7 NNW 47.2 0.00 IN

24:00

16.5 31.1 NW 38.0 0.00 IN

Averages

23.3 22.7      

 

PM10 24 hour Concentration = 23.3 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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