SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
November 18, 2015
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: November 17, 2015  2:46 PM MST 
Date Issued for:

November 18, 2015  7:00 AM MST

Date and Time Cancelled: November 19, 2015  8:00 AM MST
PM Concentrations location: Credit Union
Weather Observations:  

Time

PM10
Concentration

Wind Speed

20.7Direction16.1

Peak Wind

Precipitation

(military)

(Credit Union -ug/m3)

(mph)

 

(mph >30)

(inches)

01:00

18.9 calm calm   NA

02:00

15.7 calm calm   NA

03:00

21.0 calm calm   NA

04:00

23.0 calm calm   NA

05:00

26.3 5.8 SE   0.00

06:00

7.4 calm calm   NA

07:00

13.5 calm calm   0.00

08:00

23.5 4.6 W   NA

09:00

184.5 49.5 NNW 66.7 0.00

10:00

272.5 38.0 NNW 50.6 0.00

11:00

137.2 32.2 NW 43.7 NA

12:00

252.3 44.9 NNW 54.1 NA

13:00

271.5 42.6 NW 55.2 NA

14:00

90.5 46.0 NW 55.2 NA

15:00

89.8 35.7 NW 52.9 NA

16:00

67.2 42.6 NW 51.8 NA

17:00

40.7 32.2 NW 50.6 NA

18:00

26.4 29.9 NW 38.0 NA

19:00

16 32.2 NW 41.4 NA

20:00

11.8 16.1 NNW   NA

21:00

7.9 19.6 NW   NA

22:00

12.2 21.9 NW 34.5 NA

23:00

1.0 20.7 NW 29.9 NA

24:00

3.0 16.1 WNW   NA

Averages

68.1 29.5      

 

PM10 24 hour Concentration = 68.1 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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