SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
February 11, 2016
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: February 11, 2016  11:07 AM MST 
Date Issued for:

February 11, 2016   11:07 AM MST

Date and Time Cancelled: February 11, 2016  5:00 PM MST
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

8.6 6.6 S   NA

02:00

10.5 6.6 SSE   NA

03:00

11.2 5.7 SSE   NA

04:00

11.2 4.4 N   NA

05:00

12.0 0.6 SE   NA

06:00

12.2 0.5 S   NA

07:00

15.1 0.2 calm   NA

08:00

15.4 0.3 calm   NA

09:00

55.9 11.6 var   NA

10:00

144.2 22.5 NW 33.3 NA

11:00

152.7 24.3 WNW 39.4 NA

12:00

197.0 27.5 NNW 35.9 NA

13:00

118.4 26.1 WNW 35.7 NA

14:00

51.4 26.2 NNW 36.4 NA

15:00

76.2 24.2 N 38.3 NA

16:00

48.0 21.9 N 30.5 NA

17:00

179.4 17.6 N   NA

18:00

194.5 15.5 N   NA

19:00

128.1 11.7 NNE   NA

20:00

126.1 7.9 N   NA

21:00

172.1 7.8 NNE   NA

22:00

75.7 4.6 calm   NA

23:00

12.9 2.0 NE   NA

24:00

12.2 0.6 NNE   NA

Averages

76.7 11.5      

 

PM10 24 hour Concentration = 76.7 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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