SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
November 22, 2012
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: November 21, 2012   4:05 AM MST 
Date Issued for:

November 22, 2012   3:00 AM MST

Date and Time Cancelled: November 22, 2012   6:00 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

27.2 20.7 NNW   NA

02:00

33.4 28.8 NNW 35.7 NA

03:00

4.3 24.2 NNW 33.4 NA

04:00

5.5 25.3 NNW 35.7 NA

05:00

12.7 31.1 NNW 38.0 NA

06:00

15.8 28.8 NNW 40.3 NA

07:00

15.0 17.3 NW   NA

08:00

5.0 19.6 NW   NA

09:00

0.8 18.4 NW   NA

10:00

11.9 23.0 NW 35.7 NA

11:00

112.6 35.7 NW 46.0 NA

12:00

170.1 33.4 NW 43.7 NA

13:00

55.9 26.5 NW 42.6 NA

14:00

56.7 21.9 NNW 31.1 NA

15:00

13.7 21.9 WNW   NA

16:00

13.5 12.7 NNW   NA

17:00

18.9 24.2 NNW 33.4 NA

18:00

67.9 28.8 NNW 35.7 NA

19:00

81.5 20.7 N   NA

20:00

30.5 19.6 N   NA

21:00

24.7 26.5 NNW 33.4 NA

22:00

50.1 26.5 N 36.8 NA

23:00

49.0 26.5 NNW 33.4 NA

24:00

53.8 16.1 N   NA

Averages

38.8 24.1      

PM10 24 hour Concentration = 38.8 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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