SOUTH DAKOTA Department of
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Air Quality

 

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

Date and Time Issued: October 16, 2012   11:49 AM MDT 
Date Issued for:

October 16 , 2012   6:00 PM MDT

through October 18, 2012   6:00 PM MDT

Date and Time Cancelled: October 17, 2012   12:13 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

9.7 8.1 NW   NA

02:00

4.2 9.2 NW   NA

03:00

5.8 8.1 NW   NA

04:00

2.8 4.6 W   NA

05:00

1.4 4.6 WNW   NA

06:00

5.4 calm calm   NA

07:00

15.8 calm calm   NA

08:00

41.3 calm calm   NA

09:00

22.2 9.2 SSE   NA

10:00

17.4 15.0 S   NA

11:00

SV 17.3 S   NA

12:00

SV 18.4 S   NA

13:00

10.2 12.7 SSW   NA

14:00

10.6 5.8 WNW   NA

15:00

42.7 3.5 ESE   0.0

16:00

49.5 12.7 N   0.0

17:00

46.1 3.5 NNW   0.0

18:00

51.6 23.0 NNW   0.0

19:00

14.4 31.1 NW 39.1 .03

20:00

7.2 13.8 WNW   .08

21:00

-2.2 16.1 WNW   .01

22:00

2.3 8.1 WNW   0.0

23:00

7.0 21.9 NW   NA

24:00

11.2 21.9 NW   NA

Averages

17.1        

PM10 24 hour Concentration = 17.1 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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