SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
November 26, 2011
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: November 26, 2011   1:48 AM MST 
Date Issued for: November 26, 2011   1:48 AM MST
Date and Time Cancelled: November 26, 2011   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

43.3 38.0 NW 49.5 NA

02:00

40.0 40.3 NW 52.9 NA

03:00

42.4 42.6 NW 54.1 NA

04:00

23.1 38.0 NNW 48.3 NA

05:00

19.7 32.2 NNW 42.6 NA

06:00

26.9 36.8 NNW 50.6 NA

07:00

20.5 26.5 NNW 41.4 NA

08:00

16.7 29.9 NNW 39.1 NA

09:00

12.8 40.3 NW 51.8 NA

10:00

29.7 40.3 NNW 54.1 NA

11:00

57.7 39.1 NNW 48.3 NA

12:00

48.0 34.5 NNW 46.0 0.00

13:00

24.5 29.9 NW 44.9 0.00

14:00

8.2 32.2 NNW 40.3 NA

15:00

5.7 26.5 NNW 35.7 NA

16:00

7.9 15.0 NNW   NA

17:00

12.9 11.5 NNW   NA

18:00

29.8 10.4 NNW   NA

19:00

30.5 5.8 WNW   NA

20:00

22.7 calm calm   NA

21:00

25.4 calm calm   NA

22:00

16.1 3.5 W   NA

23:00

29.5 3.5 WNW   NA

24:00

5.9 8.1 W   NA

Averages

25.0 28.7      

PM10 24 hour Concentration = 25.0 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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