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Air Quality

 

Air Quality Alert - High Winds
March 16, 2012
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: March 16, 2012   3:57 AM MDT 
Date Issued for: March 16, 2012   3:57 AM MDT
Date and Time Cancelled: March 16, 2012   5:00 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

7.4 calm calm   NA

02:00

66.3 calm calm   NA

03:00

92.4 6.9 ESE   NA

04:00

73.7 5.8 E   NA

05:00

46.3 5.8 ESE   NA

06:00

26.8 4.6 ESE   NA

07:00

94.2 3.5 E   NA

08:00

147.3 5.8 SE   NA

09:00

33.5 10.4 SE   NA

10:00

15.2 19.6 S   NA

11:00

30.1 24.2 SW 31.1 NA

12:00

31.2 24.2 SW 32.2 NA

13:00

28.7 19.6 SW 31.1 NA

14:00

17.5 24.2 SSW 31.1 NA

15:00

14.5 19.6 SW   NA

16:00

9.6 17.3 WSW   NA

17:00

13.9 16.1 SW   NA

18:00

14.0 11.5 SSW   NA

19:00

15.8 8.1 SSW   NA

20:00

22.3 4.6 SSW   NA

21:00

22.2 5.8 WSW   NA

22:00

23.1 3.5 NNW   NA

23:00

15.9 5.8 SW   NA

24:00

4.3 calm calm   NA

Averages

36.1 12.1      

PM10 24 hour Concentration = 36.1 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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