SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
May 5, 2010
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: May 5, 2010   4:30 AM MDT 
Date Issued for: May 5, 2010    Early Morning
Date and Time Cancelled: May 5, 2010    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

10.8 20.7 WNW 31.1 NA

02:00

8.5 35.7 NW 46.0 NA

03:00

11.6 36.8 WNW 47.2 NA

04:00

20.1 29.9 NW 39.1 NA

05:00

8.9 33.4 NW 41.1 NA

06:00

0.5 38.0 NW 50.6 NA

07:00

3.9 25.3 NNW 33.4 NA

08:00

6.9 21.9 NW 35.7 NA

09:00

6.4 24.2 NW 33.4 NA

10:00

8.9 20.7 NNW   NA

11:00

37.6 20.7 NNW   NA

12:00

72.2 20.7 NNW   NA

13:00

231.0 26.5 N 33.4 NA

14:00

260.4 26.5 N 35.7 NA

15:00

168.4 25.3 N 33.4 NA

16:00

57.3 24.2 N 31.1 NA

17:00

39.0 21.9 NNE   NA

18:00

27.3 11.5 NNE   NA

19:00

14.1 11.5 NNE   NA

20:00

32.0 8.1 NE   NA

21:00

14.7 6.9 NNE   NA

22:00

14.2 8.1 ENE   NA

23:00

11.1 10.4 NNE   NA

24:00

16.2 9.2 NE   NA

Averages

45.1 21.6      

PM10 24 hour Concentration = 45.1 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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