SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
March 27, 2012
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: March 26, 2012   11:15 AM MDT 
Date Issued for: March 26, 2012   4:00 PM MDT
Date and Time Cancelled: March 27, 2012   6:00 AM 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

11.5 15.0 WSW   NA

02:00

7.5 6.9 WNW   NA

03:00

3.1 17.3 W   NA

04:00

3.7 23.0 NW 31.1 0.00 in

05:00

5.3 15.0 WNW   0.01 in

06:00

5.2 21.9 W   NA

07:00

5.8 11.5 WNW   NA

08:00

16.2 18.4 WNW   NA

09:00

12.7 15.0 NW   NA

10:00

25.4 19.6 NW   NA

11:00

19.0 17.3 NNW   NA

12:00

14.8 15.0 NW   NA

13:00

16.5 9.2 NNW   NA

14:00

12.5 11.5 NW   NA

15:00

6.2 15.0 NNW   NA

16:00

9.2 13.8 W   NA

17:00

0.5 12.7 NW   NA

18:00

18.2 10.4 WSW   NA

19:00

28.8 6.9 NNW   NA

20:00

23.3 4.6 NE   NA

21:00

31.1 8.1 NNE   NA

22:00

32.2 6.9 NNE   NA

23:00

16.2 9.2 N   NA

24:00

18.6 6.9 N   NA

Averages

14.3 13.4      

PM10 24 hour Concentration = 14.3 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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