SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
August 15, 2012
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: August 15, 2012   4:07 AM MDT 
Date Issued for: August 15, 2012   8:00 AM MDT
Date and Time Cancelled: August 15, 2012   6:00 PM MDT
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

24.7 4.6 W   NA

02:00

19.7 4.6 WNW   NA

03:00

25.7 calm calm   NA

04:00

18.4 5.8 W   NA

05:00

26.7 3.5 W   NA

06:00

31.6 19.6 N 34.5 NA

07:00

108.3 36.8 NNW 47.2 NA

08:00

131.9 39.1 NNW 48.3 NA

09:00

52.4 32.2 NNW 49.5 NA

10:00

51.1 34.5 NNW 49.5 NA

11:00

78.3 36.8 NNW 50.6 NA

12:00

80.1 33.4 NW 41.4 NA

13:00

61.0 31.1 NNW 41.4 NA

14:00

75.8 32.2 NNW 41.4 NA

15:00

55.9 31.1 NNW 41.4 NA

16:00

38.8 32.2 NNW 42.6 NA

17:00

36.7 28.8 NNW 36.8 NA

18:00

10.5 24.2 NNW 32.2 NA

19:00

5.8 17.3 N   NA

20:00

12.4 15.0 N   NA

21:00

26.7 12.7 NNW   NA

22:00

15.6 10.4 NNW   NA

23:00

17.0 11.l5 NNW   NA

24:00

6.7 11.5 NNW   NA

Averages

42.2 24.4      

PM10 24 hour Concentration = 42.2 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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