SOUTH DAKOTA Department of
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Air Quality

 

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

Date and Time Issued: March 13, 2012   3:24 AM MDT 
Date Issued for: March 13, 2012   10:00 AM MDT
Date and Time Cancelled: March 13, 2012   8:00 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

10.8 4.6 ESE   NA

02:00

18.8 5.8 ESE   NA

03:00

25.9 calm calm   NA

04:00

22.6 6.9 E   NA

05:00

32.8 5.8 E   NA

06:00

137.6 4.6 ESE   NA

07:00

183.0 calm calm   NA

08:00

694.1 6.9 SE   NA

09:00

107.1 16.1 S   NA

10:00

32.8 17.3 SSW   NA

11:00

39.3 23.0 WSW   NA

12:00

24.8 18.4 SSW   NA

13:00

42.3 23.0 SW 32.2 NA

14:00

62.3 26.5 SW   NA

15:00

28.5 24.2 SW 32.2 NA

16:00

33.4 28.8 SW 36.8 NA

17:00

56.2 21.9 SW 49.5 NA

18:00

30.9 16.1 SSW 38 NA

19:00

33.6 21.9 WSW   NA

20:00

34.2 17.3 SW   NA

21:00

25.0 15.0 SW   NA

22:00

19.7 21.9 WSW 32.2 NA

23:00

11.4 9.2 W   NA

24:00

17.8 5.2 W   NA

Averages

71.9 16.0      

PM10 24 hour Concentration = 71.9 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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