SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
November 28, 2017
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: November 28, 2017   12:28 PM MST 
Date Issued for:

November 28, 2017   11:00 PM MST

Date and Time Cancelled: November 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

5.0 18.4 NW   0.00 IN

02:00

5.2 20.7 NW   0.00 IN

03:00

3.8 17.3 NW   0.00 IN

04:00

6.2 18.4 NW   0.00 IN

05:00

5.9 10.4 NW   0.00 IN

06:00

5.7 10.4 WNW   0.00 IN

07:00

5.4 8.1 WNW   0.00 IN

08:00

10.8 10.4 WNW   0.00 IN

09:00

9.6 16.1 NW   0.00 IN

10:00

16.3 17.3 NW   0.00 IN

11:00

33.7 11.5 NNW   0.00 IN

12:00

16.3 13.8 NNW   0.00 IN

13:00

3.9 5.8 N   0.00 IN

14:00

6.3 3.5 NW   0.00 IN

15:00

11.3 CALM CALM   NA

16:00

9.1 8.1 SSE   NA

17:00

8.2 6.9 SE   0.00 IN

18:00

12.5 8.1 ESE   NA

19:00

21.4 12.7 SE   NA

20:00

12.5 5.8 S   NA

21:00

9.8 15.0 S   NA

22:00

7.3 12.7 S   NA

23:00

3.5 15.0 S   NA

24:00

5.4 24.2 S 32.2 NA

Averages

9.8 12.6      

 

PM10 24 hour Concentration = 9.8 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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