SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
March 26, 2010
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: March 26, 2010   3:55 AM MDT 
Date Issued for: March 26, 2010    Noon MDT
Date and Time Cancelled: March 26, 2010    6:00 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

16.1 3.5 Var   NA

02:00

27.0 9.2 S   NA

03:00

26.3 11.5 S   NA

04:00

18.0 4.6 S   NA

05:00

19.0 9.2 S   NA

06:00

23.8 5.8 SSW   NA

07:00

14.7 9.2 SSW   NA

08:00

5.1 11.5 SSW   NA

09:00

64.4 12.7 SSW   NA

10:00

21.9 18.4 WNW   NA

11:00

4.8 9.2 W   NA

12:00

5.3 8.1 WNW   NA

13:00

7.7 9.2 W   NA

14:00

8.7 11.5 WNW   NA

15:00

11.2 20.7 N   NA

16:00

17.7 26.5 NNW 34.5 0.0

17:00

15.5 26.5 NNW 32.2 NA

18:00

6.6 19.6 NNW   NA

19:00

6.5 19.6 NW   NA

20:00

2.6 17.3 NNW   NA

21:00

3.5 15.0 NW   NA

22:00

5.0 13.8 NW   NA

23:00

1.5 18.4 NNW   NA

24:00

1.4 15 NW   NA

Averages

13.9        

PM10 24 hour Concentration = 13.9 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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