SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
July 4, 2012
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: July 4, 2012   1:32 AM MDT 
Date Issued for: July 4, 2012   1:32 AM MDT
Date and Time Cancelled: July 4, 2012   Noon 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

26.8 13.8 SSW   NA

02:00

33.8 11.5 SSW   NA

03:00

32.6 9.2 SSW   NA

04:00

40.1 5.8 SW   NA

05:00

104.8 4.6 SE   NA

06:00

105.7 13.8 N   NA

07:00

61.9 26.5 NNW 38.0 NA

08:00

81.5 34.5 NNW 49.5 NA

09:00

78.9 31.1 NNW 47.2 NA

10:00

39.1 33.4 NNW 43.7 NA

11:00

67.9 31.1 NNW 41.4 NA

12:00

91.5 26.5 N 34.5 NA

13:00

75.6 18.4 N   NA

14:00

74.2 18.4 N   NA

15:00

37.8 12.7 NNE   NA

16:00

10.2 10.4 NNE   NA

17:00

9.9 6.9 VAR   NA

18:00

7.3 8.1 NE   NA

19:00

19.6 9.2 NE   NA

20:00

12.4 6.9 ENE   NA

21:00

14.7 6.9 E   NA

22:00

18.5 8.1 E   NA

23:00

18.9 5.8 E   NA

24:00

17.1 4.6 ENE   NA

Averages

45.0 15.8      

PM10 24 hour Concentration = 45.0 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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