SOUTH DAKOTA Department of
Environment & Natural Resources

Protecting South Dakota's Tomorrow...Today!
Joe Foss Building
523 E Capitol
Pierre, SD 57501
Field Offices
Contact Us
SubMenu

Air Quality

 

Air Quality Alert - High Winds
February 1, 2009
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: February 1, 2009   3:38 AM MST 
Date Issued for: February 1, 2009 through afternoon 
Date and Time Cancelled: February 1, 2009 
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

6.8 11.5 NNW   NA

02:00

0.6 16.1 NW   NA

03:00

3.2 16.1 NW   NA

04:00

0.4 11.5 NW   NA

05:00

1.2 10.4 W   NA

06:00

3.0 11.5 WNW   NA

07:00

0.1 15.0 NNW   NA

08:00

4.7 6.9 W   NA

09:00

28.3 6.9 WNW   0.0

10:00

0.0 25.3 NW   0.0

11:00

10.5 25.3 NW 34.5 NA

12:00

8.2 19.6 NW 34.5 NA

13:00

10.2 17.3 NNW   NA

14:00

10.4 16.1 NNW   NA

15:00

8.8 18.4 NNW   NA

16:00

9.1 10.4 NNW   NA

17:00

5.9 10.4 NW   NA

18:00

7.0 6.9 WNW   NA

19:00

5.7 3.5 WNW   NA

20:00

14.3 4.6 WSW   NA

21:00

9.9 4.6 WSW   NA

22:00

9.2 4.6 W   NA

23:00

7.1 4.6 WNW   NA

24:00

8.1 4.6 WNW   NA

Averages

7.2 12.1      

PM10 24 hour Concentration = 7.2 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

4oiGIFNEIEJJVCBEZXRlY3Rpb24=