SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
January 13, 2012
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: January 13, 2012   2:52 PM MST 
Date Issued for: January 13, 2012   2:52 PM MST
Date and Time Cancelled: January 13, 2012   9:00 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

21.0 12.7 NNW   NA

02:00

0.0 9.2 N   NA

03:00

6.8 8.1 NNW   NA

04:00

4.2 3.5 NW   NA

05:00

15.4 3.5 S   NA

06:00

1.2 calm calm   NA

07:00

5.7 calm calm   NA

08:00

11.5 calm calm   NA

09:00

17.7 calm calm   NA

10:00

38.2 calm calm   NA

11:00

39.1 3.5 S   NA

12:00

13.7 3.5 VAR   NA

13:00

22.0 17.3 NNW 32.2 NA

14:00

36.5 29.9 WNW 41.4 NA

15:00

28.0 28.8 WNW 40.3 NA

16:00

48.4 27.6 NW 46.0 NA

17:00

46.9 34.5 NW 46.0 NA

18:00

152.8 34.5 NNW 51.8 NA

19:00

53.0 32.2 NW 50.6 NA

20:00

52.7 33.4 NW 50.6 NA

21:00

6.9 27.6 NW 35.7 NA

22:00

5.7 24.2 NNW 40.3 NA

23:00

3.0 16.1 NNW   NA

24:00

0.6 12.7 NW   NA

Averages

26.3 19.6      

PM10 24 hour Concentration = 26.3 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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