SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
October 3, 2012
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: October 3, 2012   8:16 AM MDT 
Date Issued for: October 3 , 2012   Late morning MDT
Date and Time Cancelled: October 3, 2012   Midnight 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

131.6 12.7 NNW   NA

02:00

117.4 15.0 NW   NA

03:00

31.9 10.4 NNW   NA

04:00

71.7 12.7 NNW   NA

05:00

38.1 12.7 NNW   NA

06:00

65.2 11.5 NNW   NA

07:00

89.9 10.4 N   NA

08:00

172.1 31.1 N 39.1 NA

09:00

331.0 32.2 N 43.7 NA

10:00

460.7 40.3 NNW 46.0 NA

11:00

350.9 29.9 NNW 51.8 NA

12:00

161.4 31.1 NNW 43.7 NA

13:00

71.5 29.9 NNW 42.6 NA

14:00

37.2 33.4 NNW 41.4 NA

15:00

44.4 33.4 NNW 46.0 0.0

16:00

45.4 39.1 NNW 50.6 NA

17:00

32.9 31.1 NNW 49.5 NA

18:00

37.3 28.8 NNW 36.8 NA

19:00

31.3 33.4 NNW 42.6 NA

20:00

4.6 27.6 NNW 36.8 NA

21:00

14.1 21.9 NNW 42.6 0.0

22:00

11.5 24.2 NNW 31.1 NA

23:00

6.4 26.5 NNW 36.8 NA

24:00

16.6 27.6 NNW 39.1 NA

Averages

99.0 25.3      

PM10 24 hour Concentration = 98.9 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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