SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
December 3, 2012
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: December 3, 2012   6:38 AM MST 
Date Issued for:

December 3, 2012   6:38 AM MST

Date and Time Cancelled: December 3, 2012   5:00 PM MST
PM Concentrations location: Credit Union
Weather Observations:  

Time

PM10
Concentration

Wind Speed

Direction

Peak Wind

Precipitation

(military)

(Credit Union -ug/m3)

(mph)

 

(mph >30)

(inches)

01:00

51.0 25.3 WNW 39.1 NA

02:00

85.6 41.4 NNW 52.9 NA

03:00

107.1 34.5 NNW 43.7 0.00 in

04:00

13.7 23.0 NW 31.1 NA

05:00

5.7 13.8 NNW   NA

06:00

-3.5 23.0 NW   NA

07:00

1.6 15.0 NW   NA

08:00

4.0 15.0 NW   NA

09:00

8.7 16.1 WNW   NA

10:00

5.6 19.6 NW 31.1 NA

11:00

34.0 21.9 NW   NA

12:00

46.5 21.9 NW 36.8 NA

13:00

25.4 21.9 NW   NA

14:00

24.6 16.1 NW   NA

15:00

19.8 11.5 NW   NA

16:00

21.1 9.2 W   NA

17:00

20.1 6.9 WNW   NA

18:00

19.2 5.8 WNW   NA

19:00

20.1 6.9 W   NA

20:00

11.7 10.4 WNW   NA

21:00

4.2 9.2 WNW   NA

22:00

0.2 11.5 WNW   NA

23:00

4.7 11.5 WNW   NA

24:00

7.0 10.4 WNW   NA

Averages

22.4 16.7      

PM10 24 hour Concentration = 22.4 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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