Attachment_11_-_FAFB_Climate_Weather_Data_27_Mar_14.pdf

FA4620-14-R-B001

Attachment 11

Operational Climatic Data Summary (OCDS-II)

Station Number 727855

Station Name

FAIRCHILD AFB, WA

Period of Record Mean: 2003/01/01 - 2012/12/31 Extreme: 1940/04/01 - 2014/01/31

UTC to LST -8

ICAO

KSKA

Location(Degrees) N 47.615058 W 117.655772

Elevation(Feet)

Prepared By

14 WS

Year(s) Period of Record (see detailed POR >>>)

Detailed POR 1940-2014

Authoritative climate summary - data quality and quantity sufficient to produce accurate climatological values

Temperature

PARAMETER JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN

Temperature Extreme Maximum (°F) 61 63 72 88 93 98 104 106 100 85 68 58 106

Temperature Mean Maximum (°F) 35 40 49 57 66 73 85 84 75 58 42 33 58

Temperature Mean (°F) 28 32 38 44 53 59 71 69 60 46 34 28 43

Temperature Mean Minimum (°F) 24 26 32 36 43 50 57 55 47 39 30 23 39

Temperature Extreme Minimum (°F) -21 -24 -3 19 27 31 31 35 26 12 -12 -18 -24

Temperature Maximum Range (°F) 29 36 36 41 41 41 41 43 41 41 31 29 43

Days With Temperature >= 90°F 0 0 0 0 0 1 9 7 2 0 0 0 19

Days With Temperature <= 32°F 27 25 21 11 2 0 0 0 1 8 22 29 145

Days With Temperature <= 0°F 1 0 0 0 0 0 0 0 0 0 0 1 2

* = No Data T = Trace # = Occurrences rounded to 0

Precipitation

Precipitation Period Maximum (In) 5.3 3.6 4.2 3.1 6.0 2.8 3.1 2.9 2.7 6.5 6.5 5.0 26.7

Precipitation Period Mean (In) 2.0 1.4 1.4 1.1 1.4 1.1 0.5 0.6 0.7 1.1 2.0 2.2 15.7

Precipitation Period Minimum (In) 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 10.0

Precipitation Period Daily Maximum (In) 1.1 1.2 1.8 1.1 2.3 1.4 1.1 1.5 0.9 1.0 1.3 1.2 2.3

Snowfall Period Maximum (In) 50.7 31.7 11.6 6.3 2.7 0.0 0.0 0.0 0.0 5.0 25.3 42.7 103.9

Snowfall Period Mean (In) 13.5 6.6 3.1 0.6 0.1 0.0 0.0 0.0 0.0 0.3 6.1 13.0 43.7

Snowfall Period Daily Maximum (In) 8.6 8.8 6.0 3.7 1.5 0.0 0.0 0.0 0.0 4.8 12.5 10.8 12.5

Days with liquid >= Trace 5 4 5 5 5 4 3 3 3 4 4 5 50

Days with liquid >= 0.01" 14 9 12 10 10 8 2 4 4 8 13 14 109

Days with liquid >= 0.5" 1 0 # # 1 1 0 # # # # 1 4

Days with snow >= Trace 8 6 6 4 1 # 0 0 # 1 5 8 39

Days with snow >= 0.05" 9 5 3 1 # 0 0 0 0 # 4 8 31

Days with snow >= 1.5" 3 2 1 # 0 0 0 0 0 0 1 3 10

Moisture

Relative Humidity Mean Maximum (%) 98.1 95.6 94.7 90.7 87.3 85.2 72.1 70.2 78.5 89.5 97.1 98.1 88.0

Relative Humidity Mean Minimum (%) 77.6 63.8 48.7 36.9 32.5 32.1 20.2 20.3 25.7 43.4 67.4 80.2 45.7

Vapor Pressure Mean (In Hg) 0.15 0.17 0.19 0.21 0.25 0.31 0.32 0.29 0.26 0.24 0.18 0.15 0..21

Dew Point Temperature Mean (°F) 27 29 32 34 40 45 45 44 40 38 31 26 35

Dew Point Temperature Extreme Maximum (°F) 55 52 58 61 64 71 71 68 64 61 57 51 71

Dew Point Temperature Extreme Minimum (°F) -30 -28 -21 -5 5 11 9 11 4 -3 -20 -32 -32

Wind

Prevailing Wind Direction $ENE $ENE SSW SSW SSW S S SSW SSW S S S S

Wind Speed Mean for Prevailing Wind Direction (kts) 6.4 6.8 10.9 9.9 10.3 8.2 7.2 8.4 8.4 7.6 8.2 7.4 8.0

Wind Speed Mean for All Wind Directions (kts) 6.6 6.4 8.5 8.2 8.0 7.4 6.4 6.4 6.2 7.0 7.2 6.4 7.0

Wind Speed Maximum (kts) 49.9 44.9 29.9 40.0 41.0 36.9 34.0 42.7 36.9 48.0 42.9 44.9 49.9

Gust Speed Maximum (kts) 64.1 57.1 67.0 50.1 55.9 67.0 50.1 56.9 61.0 54.0 62.0 61.0 67.0

Pressure

PARAMETE

R JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN

Pressure Altitude Extreme Maximum (ft)

3421.

3353.

3330.

3057.

3005.

2897.

2785.

2883.

3100.

3248.

3264.

3362.

3421.

Weather Occurrence

Fog Days Mean 21 15 11 6 4 5 2 3 2 7 18 24 118

Thunderstorm Days Mean 0 0 # 0 3 3 2 2 1 # 0 0 12

Precipitation Days Mean * * * * * * * * * * * * *

Rain Days Mean 13 10 16 15 17 14 8 12 12 13 16 14 159

Freezing Rain Days Mean 3 1 # 0 0 0 0 0 0 # 1 5 10

Cloud Cover

Cloud Cover Mean (x/8) 6 6 6 5 5 5 3 3 3 5 6 7 5

% Frequency of Wind > 25 kts

HOURS JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN

14-16 LST 5.3 4.1 12.6 10.3 9.9 4.1 5.8 4.2 4.4 6.9 6.1 3.6 6.3

17-19 LST 2.8 2.9 5.3 2.5 5.5 1.6 1.8 1.8 0.9 2.7 4.1 2.4 2.9

20-22 LST 2.3 2.2 3.3 1.2 0.7 0.9 1.1 1.1 0.6 1.6 4.3 1.9 1.9

23-01 LST 2.3 1.5 2.9 1.3 1 0.4 0.5 0.1 0.3 1.6 4.6 2.4 1.8

02-04 LST 2.3 1.7 2.4 2.1 1.1 0.4 0.9 0.1 0 2.6 3.5 2.9 1.9

05-07 LST 3.5 2.6 4.8 3.4 2.6 0.2 0.8 0.3 0.1 1.5 3.4 3 2.5

08-10 LST 3.7 4.9 8.1 7.4 4.6 2.4 1.8 1.3 1.2 4.7 4 3.7 4.1

11-13 LST 5.8 5.5 13.4 11.5 10.6 2.3 4.8 3.4 6 6.9 8.3 5.6 7.1

All Hours 3.5 3.1 6.5 5.1 4.5 1.5 2.2 1.6 1.7 3.5 4.7 3.2 3.5

% Frequency of Fog

14-16 LST 38.7 23.7 8.5 2.9 2 1.3 0.1 0.8 0.6 5.3 21.9 36.3 14.7

17-19 LST 36.1 27.5 8.4 1.2 2.3 1 0 0.4 0.1 5.5 27.3 45.7 16.9

20-22 LST 41.7 40.2 17.6 1 2.9 4.5 1.5 1.9 0.6 6.4 28.8 50.9 21.3

23-01 LST 42.8 47.3 18.3 7.9 0.5 1.5 3.1 1.1 1.4 13.5 39.7 47.3 23.9

02-04 LST 45.1 48.5 24.2 8.7 3.7 4.6 2.2 2.7 5.8 17.1 41.3 44.7 25.1

05-07 LST 49.3 50.2 28 12.4 3.2 9.9 0.9 2.1 10.6 21.9 44.9 50.6 28.7

08-10 LST 46.7 37.2 14.8 6.4 1.7 4.8 0.2 0.6 5.2 12.3 33.7 46.4 21.9

11-13 LST 33.1 24.2 6.2 5.8 3.6 2.1 0.3 0.7 1 6.2 23.5 39.9 15.1

All Hours 41.9 38.2 16.3 6.1 2.5 3.8 1 1.3 3.3 11.4 33.3 45.4 21.1

% Frequency of Thunderstorm

14-16 LST 0 0 0 0.6 3.6 2.5 0.7 0.1 0.4 0.2 0 0 0.6

17-19 LST 0 0 0.1 0.6 1.3 1.9 0.8 1 0.1 0.1 0 0 0.4

20-22 LST 0 0 0 0 0.9 2.6 1.3 1.8 0.1 0 0 0 0.4

23-01 LST 0 0 0 0 0.3 0.1 2.3 0.7 0 0 0 0 0.2

02-04 LST 0 0 0 0 0 1.4 2.1 0.9 0.2 0 0 0 0.3

05-07 LST 0 0 0.1 0 0 1.7 0.4 1 0.1 0 0 0 0.2

08-10 LST 0 0 0 0 0.3 0.3 0 0.4 0 0 0 0 0.1

11-13 LST 0 0 0 0.1 1.4 1.1 0.6 0.2 0 0.1 0 0 0.2

All Hours 0 0 0 0.1 1 1.4 1 0.7 0.1 0 0 0 0.3

% Frequency of Rain

14-16 LST 11.7 11.9 18.5 18.1 17.1 15.5 3.7 8.6 8.5 15.4 13.7 9 12.7

17-19 LST 11.9 7.7 13.9 11.2 13.7 11.6 3.5 9.9 7.3 13 12.1 11.5 10.8

20-22 LST 9.5 9.7 12.9 9.5 12.9 15.5 7.1 8.2 7.8 9.8 14.9 12.8 11.1

23-01 LST 12.1 8.4 12.3 9.5 12.7 10.2 9.5 6.6 5.1 11.7 10.6 13.7 10.6

02-04 LST 9.6 7.9 11.6 11.8 13.4 15.6 6.6 6.8 7.3 12.1 12 13.5 10.9

05-07 LST 9.9 6.1 14.9 15.6 11 19.7 3.5 6.3 8.2 11.3 11.8 9 10.7

08-10 LST 9.6 9.5 15.2 17.8 16.7 19.3 5.9 10.1 11.4 12.9 9.8 9.5 12

11-13 LST 9.6 12.2 19.9 21.3 21.2 19 5.7 13.1 11.1 17.7 12 8.5 14

All Hours 10.5 9.1 14.8 14.6 14.9 16 5.7 8.8 8.4 12.9 12 11 11.6

% Frequency of Snow or Ice Pellet

14-16 LST 15.4 6.6 7.9 3.3 0.4 0 0 0 0 0.1 12.3 17 6.6

17-19 LST 12.9 7.2 6.5 1.7 0 0 0 0 0 0 12.8 17.4 6.4

20-22 LST 11.2 7.3 5.2 1.9 0 0 0 0 0 0 8.3 20.2 6.1

23-01 LST 9.9 8.5 7.4 1.9 0 0 0 0 0 0.1 12 16.3 6.2

02-04 LST 11 7.8 10.2 3.5 0.2 0.1 0 0 0 0.1 12 16.9 6.6

05-07 LST 14.7 7.1 14.7 7.2 0.6 0.3 0 0 0 0.5 12.1 15.6 7.6

08-10 LST 15.4 11.1 10.6 6.6 0 0 0 0 0 0.8 10.9 13.6 7.2

11-13 LST 13.6 10.9 8.2 6 0.2 0 0 0 0 0.4 11 18.3 7

All Hours 13 8.4 9.1 4.2 0.2 0.1 0 0 0 0.3 11.4 16.9 6.7

% Frequency of Ceiling & Visibility < 100.00 FT / 0.25 MI

14-16 LST 3.3 0.5 0 0 0 0 0 0 0 0 0.7 2.3 0.6

17-19 LST 4.4 0.1 0.7 0 0 0 0 0 0 0 1.2 1.8 0.7

20-22 LST 3.6 1 0.8 0 0 0 0 0 0 0.1 2.1 1.9 0.8

23-01 LST 3.3 1.6 0.4 0.1 0 0 0 0 0 0.1 2.2 4 1

02-04 LST 3.5 1.5 0.4 0 0.1 0 0 0.1 0.1 0.6 2.8 4.8 1.2

05-07 LST 4.7 3.5 1.9 0.2 0.1 0 0 0.2 0.8 1.4 3.2 4.8 1.7

08-10 LST 4.4 3.7 0.8 0 0 0 0 0 0 0.7 3.4 4.6 1.4

11-13 LST 3.5 0.2 0 0 0 0 0 0 0 0 0.5 2.6 0.6

All Hours 3.8 1.5 0.6 0 0 0 0 0 0.1 0.4 2 3.3 1

% Frequency of Ceiling & Visibility < 200.00 FT / 0.50 MI

14-16 LST 6.1 1.7 0.3 0 0 0 0 0 0 0 1.7 6.2 1.3

17-19 LST 7.7 2.6 1.2 0 0 0 0 0 0 0.2 3.1 7.3 1.8

20-22 LST 10.4 5.5 2.7 0.1 0 0.6 0 0 0 0.7 6 9.9 3

23-01 LST 13 7.6 2.4 0.3 0 0.1 0.4 0 0 1.1 7.9 12.1 3.7

02-04 LST 13.6 11.7 2.2 0.6 0.4 0.1 0 0.1 0.6 3.6 12.9 13.2 4.9

05-07 LST 14.7 14.1 4 1.2 0.3 0 0 0.4 1.7 3.6 11 15.4 5.5

08-10 LST 10.3 8.5 1.5 0.2 0 0 0 0 0.2 1.7 7.1 12.2 3.5

11-13 LST 5.3 2 0 0.1 0 0 0 0 0 0.1 2.6 5.9 1.3

All Hours 10.1 6.7 1.8 0.3 0.1 0.1 0 0.1 0.3 1.4 6.5 10.3 3.1

% Frequency of Ceiling & Visibility < 300.00 FT / 1.00 MI

14-16 LST 10.2 4.2 0.9 0 0 0 0 0 0 0.1 4.3 11.6 2.6

17-19 LST 11.9 5.9 1.8 0 0 0.1 0 0 0 0.4 5.6 13.9 3.3

20-22 LST 16.5 9.2 3.1 0.1 0.1 1.3 0 0.1 0 0.9 8.1 18.1 4.8

23-01 LST 19.6 12.7 3.8 0.9 0.2 0.7 1.9 0.9 0.6 2.1 13.2 19 6.2

02-04 LST 21.4 16 4.4 1.9 0.7 0.2 0 0.3 0.9 4.2 16.9 21.3 7.3

05-07 LST 22.1 20.2 6.8 2.5 0.8 0.3 0 0.5 2 5.3 15.8 22.4 8.1

08-10 LST 18.7 14.6 3.7 0.7 0 0.1 0 0 0.3 2.4 10.9 19.8 5.9

11-13 LST 11.4 4.9 1.2 0.1 0 0 0 0 0 0.3 5 12.3 2.9

All Hours 16.5 11 3.2 0.8 0.2 0.3 0.2 0.2 0.5 2 10 17.3 5.1

% Frequency of Ceiling & Visibility < 500.00 FT / 1.50 MI

14-16 LST 17.6 7.6 2.2 0 0 0.1 0 0 0 1 7.7 20 4.7

17-19 LST 20.4 9 2.5 0 0 0.1 0.1 0 0 1.7 9.3 24 5.6

20-22 LST 25 13.5 4.6 0.7 0.4 1.6 0.1 0.3 0.3 2.4 12.1 27.1 7.3

23-01 LST 28.7 17.7 5.7 2 0.3 0.8 1.9 1 1.4 3.8 18.9 29.2 9.2

02-04 LST 30.3 21.4 8.3 3.5 0.9 0.7 0.2 0.3 1.2 6.7 22.7 32 10.6

05-07 LST 31 25.1 11.1 5.3 1.6 1.8 0.2 0.7 2.9 8.4 24.2 35.9 12.3

08-10 LST 29.4 21.7 6.1 1.7 0.2 0.7 0 0 0.6 4.8 18.9 32.2 9.6

11-13 LST 19.4 10.7 2.9 0.4 0.3 0.4 0 0 0 0.7 10 24.6 5.8

All Hours 25.2 15.8 5.4 1.7 0.5 0.8 0.3 0.3 0.8 3.7 15.5 28.1 8.1

% Frequency of Ceiling & Visibility < 800.00 FT / 2.00 MI

14-16 LST 26.3 11.3 4.2 0.3 0.1 0.2 0 0 0 2.1 12.2 27.8 7

17-19 LST 26.4 12 3.5 0.7 0.2 0.2 0.2 0 0.1 2.9 14.3 30.3 7.6

20-22 LST 31.2 17.7 6.4 1.5 0.8 2.1 0.2 0.6 1.2 4.2 17.3 35.4 9.9

23-01 LST 34.9 22.1 8.3 3.2 1.3 1.7 1.9 1.2 2.3 6.3 25.6 37.4 12.1

02-04 LST 35.2 26.6 12.4 5.8 3.4 2.3 0.8 0.7 2.5 9.8 29.4 40.3 14

05-07 LST 39.1 31.4 17.6 8.3 3.8 4.5 0.2 1.5 4.4 12.3 31.6 43.8 16.4

08-10 LST 37.3 26.3 10.5 4.4 1 2.8 0 0.3 1.7 7.6 26.2 40.9 13.1

11-13 LST 28.8 17.5 4.7 1.7 0.4 1.2 0 0.2 0.1 2.3 16.3 33.2 8.8

All Hours 32.4 20.6 8.4 3.2 1.4 1.9 0.4 0.6 1.5 5.9 21.6 36.1 11.1

% Frequency of Ceiling & Visibility < 1000.00 FT / 2.00 MI

14-16 LST 29.2 13.6 5 1.3 0.2 0.8 0 0.2 0.2 2.1 13.5 31.1 8.1

17-19 LST 28.8 13.2 4.3 0.9 0.4 0.3 0.2 0.2 0.2 2.9 16.6 32.5 8.4

20-22 LST 32.5 19 6.8 2.4 1.3 2.4 0.2 0.8 1.5 4.5 20.1 38.1 10.8

23-01 LST 37 22.9 9.6 3.6 1.6 1.7 2.3 1.3 2.5 7.4 27.8 40.2 13.1

02-04 LST 36.7 28 13.5 6.6 4 3 1.2 0.7 2.8 10.8 32.2 41.9 15

05-07 LST 40.4 32.2 18.8 10.1 5.6 5.2 0.7 1.7 4.6 13.7 32.8 44.9 17.5

08-10 LST 39.1 28.5 12.4 6.1 1.7 3.8 0.1 0.4 1.9 9 28.6 43.3 14.5

11-13 LST 31.9 19.4 5.7 2.4 0.7 2.1 0.1 0.4 0.1 2.7 19.2 36.3 10.1

All Hours 34.4 22.1 9.5 4.2 1.9 2.4 0.6 0.7 1.7 6.6 23.8 38.5 12.2

% Frequency of Ceiling & Visibility < 1500.00 FT / 3.00 MI

14-16 LST 33.5 16.6 6.7 2.6 0.5 1.1 0 0.4 0.2 3.6 19.5 37.3 10.1

17-19 LST 32.6 16.1 5.1 2.6 1.1 1.1 0.2 0.4 0.3 3.6 21 36.8 10.1

20-22 LST 35.8 22.3 8.3 4 1.8 2.5 0.6 1 1.7 5.6 25.8 41.9 12.6

23-01 LST 40.4 24.6 11.8 4.7 2.9 1.7 2.3 1.7 2.6 8.2 31.6 43.7 14.6

02-04 LST 41.7 29.8 16.2 8.1 5.6 3.4 1.2 1.2 3.1 12.1 36.3 45.8 17

05-07 LST 44.7 35.2 21.1 13 8.7 6.5 1.2 2.2 5 15.5 37.1 47.5 19.7

08-10 LST 42.9 33.9 15.3 9.8 4.1 5.9 0.3 1.5 2.8 12 33.6 46.7 17.3

11-13 LST 37.7 24.2 8.3 4.4 1.5 2.9 0.3 0.9 0.9 5.8 25.8 41.7 12.8

All Hours 38.7 25.3 11.6 6.1 3.3 3.1 0.8 1.2 2.1 8.3 28.8 42.7 14.3

% Frequency of Ceiling & Visibility < 3000.00 FT / 3.00 MI

14-16 LST 39.9 24 10.9 6.7 2.8 3.4 0.1 1.3 1.6 7.2 27.4 43.1 14

17-19 LST 38.2 20.8 9 4.7 2.2 1.9 0.2 1.1 0.8 6.4 27.1 43 12.9

20-22 LST 41.4 25.2 11.4 5.3 3.2 2.8 0.8 1.7 1.9 7 31.5 46.7 14.9

23-01 LST 45.8 27.8 15.7 6.6 4.4 2.6 2.6 2.3 2.8 9.7 37.2 48.2 17.1

02-04 LST 48.3 33.6 19.7 11.3 6.9 4.7 1.4 1.2 3.4 13.8 40.6 50.8 19.6

05-07 LST 49.5 39.2 24.8 15.9 10.6 8.3 1.8 2.4 5.2 17.8 42.5 52.9 22.4

08-10 LST 47.7 38.5 21.9 15.8 11.4 10.4 1.3 1.8 4.2 16.3 39.1 51.5 21.5

11-13 LST 43.5 32.2 16 9.5 4.9 6.6 0.3 1.5 2.8 12.1 35.8 47 17.6

All Hours 44.3 30.2 16.2 9.5 5.8 5.1 1.1 1.7 2.8 11.3 35.1 47.9 17.5