2012 MATOC Atch 11 Fairchild AFB Operational Climatic Data Summary.pdf

FA4620-12-R-B002

Attachment 11

Operational Climatic Data Summary (OCDS-II)

Station Number 727855

Station Name

FAIRCHILD AFB, WA

Period of Record Mean: 2011/01/01 ‐ 2011/12/31 Extreme: 2011/01/01 ‐ 2011/12/31

UTC to LST ‐8

ICAO

KSKA

Location(Degrees) N 47.617 W 117.65

Elevation(Feet)

Prepared By

14 WS

Year(s)

Detailed POR 1940‐2011

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) 52 48 57 61 75 81 88 91 91 77 55 48 91

Temperature Mean Maximum (°F) 35 36 46 50 63 69 78 84 78 57 43 34 56

Temperature Mean (°F) 28 28 38 40 51 57 65 68 63 47 33 26 40

Temperature Mean Minimum (°F) 24 22 32 33 42 48 52 55 49 40 28 22 37

Temperature Extreme Minimum (°F) ‐4 ‐4 23 27 30 39 43 45 39 25 18 10 ‐4

Temperature Maximum Range (°F) 20 27 23 27 29 29 38 38 40 23 25 20 40

Days With Temperature >= 90°F 0 0 0 0 0 0 0 4 5 0 0 0 9

Days With Temperature <= 32°F 24 26 19 17 1 0 0 0 0 7 26 30 151

Days With Temperature <= 0°F 1 2 0 0 0 0 0 0 0 0 0 0 3

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

Precipitation

Precipitation Period Maximum (In) 1.4 1.0 2.4 2.0 2.3 0.9 0.5 0.2 0.1 0.5 1.3 0.8 13.2

Precipitation Period Mean (In) 1.4 1.0 2.4 2.0 2.3 0.9 0.5 0.2 0.1 0.5 1.3 0.8 13.2

Precipitation Period Minimum (In) 1.4 1.0 2.4 2.0 2.3 0.9 0.5 0.2 0.1 0.5 1.3 0.8 13.2

Precipitation Period Daily Maximum (In) 0.3 0.3 0.5 0.6 0.7 0.2 0.2 0.2 0.1 0.2 0.3 0.2 0.7

Snowfall Period Maximum (In) 5.1 13.7 1.7 0.4 0.0 0.0 0.0 0.0 0.0 0.0 2.8 0.1 23.9

Snowfall Period Mean (In) 5.1 13.7 1.7 0.4 0.0 0.0 0.0 0.0 0.0 0.0 2.8 0.1 23.9

Snowfall Period Daily Maximum (In) 3.0 7.0 1.6 0.4 0.0 0.0 0.0 0.0 0.0 0.0 2.4 0.1 7.0

Days with liquid >= Trace 6 4 6 5 4 4 3 3 2 4 3 4 47

Days with liquid >= 0.01" 15 10 11 9 10 7 2 4 4 7 14 14 108

Days with liquid >= 0.5" 0 0 # # 1 0 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 9 32

Days with snow >= 1.5" 4 2 1 # 0 0 0 0 0 0 2 3 11

Moisture

Relative Humidity Mean Maximum (%) 97.2 89.3 95.7 92.4 88.3 90.6 82.3 76.7 83.7 94.7 98.0 99.7 90.8

Relative Humidity Mean Minimum (%) 77.9 48.6 54.9 37.0 35.2 35.5 26.5 18.8 20.6 44.7 54.8 82.5 44.9

Vapor Pressure Mean (In Hg) 0.16 0.12 0.18 0.17 0.24 0.29 0.32 0.28 0.25 0.25 0.17 0.14 0.19

Dew Point Temperature Mean (°F) 26 21 32 31 39 44 46 43 40 40 29 25 32

Dew Point Temperature Extreme Maximum (°F) 52 37 46 43 50 55 57 55 55 52 48 48 57

Dew Point Temperature Extreme Minimum (°F) ‐6 ‐11 18 12 23 28 27 27 25 19 9 10 ‐11

Wind

Prevailing Wind Direction $WSW S S SSW S S S SSW SW SW S $S S

Wind Speed Mean for Prevailing Wind Direction (kts) 11.7 11.1 10.3 12.0 8.9 9.1 8.4 7.6 8.9 9.1 8.9 6.6 8.4

Wind Speed Mean for All Wind Directions (kts) 5.8 7.2 7.8 8.5 8.0 7.2 6.0 5.1 5.1 5.6 8.2 4.3 6.2

Wind Speed Maximum (kts) 22.9 28.0 26.0 23.9 22.0 20.0 20.0 16.9 25.1 22.0 33.0 28.0 33.0

Gust Speed Maximum (kts) 29.9 42.0 35.0 34.0 35.0 28.9 28.9 27.0 35.9 32.1 44.9 37.9 44.9

Pressure

PARAMETE

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

Pressure Altitude Extreme Maximum (ft)

2713.

2919.

2874.

2834.

2818.

2726.

2621.

2605.

2732.

2874.

3005.

2834.

3005.

Weather Occurrence

Fog Days Mean 17 4 10 4 5 15 8 10 4 6 14 23 120

Thunderstorm Days Mean 0 0 0 0 1 4 1 0 2 0 0 0 8

Precipitation Days Mean 31 10 20 18 23 24 15 15 20 21 25 31 253

Rain Days Mean 21 3 18 16 23 24 15 15 20 21 17 22 215

Freezing Rain Days Mean 5 0 0 0 0 0 0 0 0 0 2 15 22

Cloud Cover

Cloud Cover Mean (%) 64.0 70.0 84.0 73.0 60.0 42.0 24.0 11.0 19.0 62.0 73.0 73.0 62.0

% Frequency of Wind > 25 kts

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

14‐16 LST 5.3 1.2 9.2 4.6 4.9 4.5 2.2 0.0 0.0 0.0 7.6 1.0 3.5

17‐19 LST 1.5 4.7 2.4 3.0 1.9 1.9 0.0 0.0 0.0 0.0 3.3 1.1 1.7

20‐22 LST 0.0 6.9 3.7 0.9 1.6 0.0 0.0 0.0 0.0 0.9 0.9 3.4 1.4

23‐01 LST 0.6 11.4 6.0 1.8 1.8 1.0 0.0 0.0 0.0 0.0 2.8 2.9 2.1

02‐04 LST 0.3 7.5 2.9 1.9 4.6 0.0 0.0 0.0 0.0 1.6 2.1 1.4 1.7

05‐07 LST 0.0 5.7 2.4 3.4 5.7 0.0 0.0 0.0 0.0 0.6 1.2 1.1 1.4

08‐10 LST 0.7 6.6 10.7 5.9 2.3 3.6 2.2 0.0 3.1 2.5 3.8 0.8 2.9

11‐13 LST 3.8 0.0 4.8 8.3 9.0 2.7 1.1 2.2 3.2 4.5 12.3 0.3 4.5

All Hours 1.4 5.4 5.3 3.8 4.0 1.7 0.7 0.3 0.8 1.3 4.1 1.5 2.4

% Frequency of Fog

14‐16 LST 33.7 3.5 3.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.3 46.6 16.7

17‐19 LST 36.9 0.0 4.8 0.0 0.0 0.0 0.0 0.0 0.0 1.8 23.3 55.0 21.5

20‐22 LST 38.2 0.0 3.7 0.0 4.1 18.4 8.8 6.5 2.8 0.0 19.5 56.1 22.0

23‐01 LST 54.4 0.0 1.2 0.9 0.0 8.3 5.4 6.1 1.2 5.5 44.5 42.9 26.3

02‐04 LST 45.8 0.0 5.8 0.0 1.5 3.0 0.0 0.0 0.0 20.5 41.4 59.3 27.2

05‐07 LST 35.3 3.4 22.0 1.7 0.8 1.7 0.0 0.0 0.0 15.9 39.3 59.9 25.5

08‐10 LST 30.5 4.4 7.1 1.0 0.0 0.0 0.0 0.0 0.0 9.0 16.6 48.1 17.6

11‐13 LST 8.8 4.4 2.9 0.0 0.0 0.0 0.0 0.0 0.0 3.6 7.5 38.6 10.1

All Hours 36.5 2.0 7.1 0.5 0.8 4.6 2.0 2.0 0.6 7.7 27.2 51.2 21.0

% Frequency of Thunderstorm

14‐16 LST 0.0 0.0 0.0 0.0 0.0 0.9 0.0 0.0 1.1 0.0 0.0 0.0 0.1

17‐19 LST 0.0 0.0 0.0 0.0 0.9 1.9 1.2 0.0 0.0 0.0 0.0 0.0 0.2

20‐22 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.7 0.0 0.0 0.0 0.1

23‐01 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

02‐04 LST 0.0 0.0 0.0 0.0 0.0 3.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2

05‐07 LST 0.0 0.0 0.0 0.0 0.0 0.9 0.0 0.0 0.0 0.0 0.0 0.0 0.1

08‐10 LST 0.0 0.0 0.0 0.0 0.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1

11‐13 LST 0.0 0.0 0.0 0.0 0.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1

All Hours 0.0 0.0 0.0 0.0 0.3 0.8 0.1 0.0 0.3 0.0 0.0 0.0 0.1

% Frequency of Rain

14‐16 LST 12.1 3.5 19.4 15.6 15.7 16.4 1.1 1.1 6.3 8.2 22.8 6.7 11.3

17‐19 LST 22.1 0.0 6.0 14.0 12.1 14.6 1.2 0.0 2.2 14.5 13.5 14.5 12.6

20‐22 LST 5.1 0.0 13.4 12.4 26.0 32.2 28.3 30.2 23.8 7.5 22.3 22.5 18.9

23‐01 LST 14.6 0.0 14.3 11.7 26.8 5.2 25.8 19.4 14.1 10.1 10.3 18.8 14.7

02‐04 LST 11.4 0.0 18.4 10.4 21.4 5.9 5.8 0.0 6.2 13.9 10.1 18.7 12.1

05‐07 LST 12.6 2.3 29.9 14.4 8.2 10.4 4.3 0.0 2.2 15.3 4.5 11.8 10.6

08‐10 LST 22.4 5.5 19.6 12.7 14.8 7.2 4.3 1.1 5.2 18.0 5.5 8.3 11.2

11‐13 LST 16.3 1.1 13.5 20.7 19.7 16.4 1.1 0.0 2.1 14.3 11.8 3.7 10.4

All Hours 14.5 1.6 17.6 14.1 18.2 14.6 9.8 8.3 8.8 13.0 12.3 13.4 12.8

% Frequency of Snow or Ice Pellet

14‐16 LST 12.5 3.5 4.1 1.8 0.0 0.0 0.0 0.0 0.0 0.0 22.3 3.2 5.8

17‐19 LST 13.0 4.7 4.8 1.0 0.0 0.0 0.0 0.0 0.0 0.0 24.1 7.5 7.8

20‐22 LST 10.8 6.9 0.0 2.7 0.0 0.0 0.0 0.0 0.0 0.0 7.7 20.4 7.0

23‐01 LST 12.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 30.6 12.1 9.2

02‐04 LST 14.4 2.5 6.8 0.9 0.0 0.0 0.0 0.0 0.0 0.0 19.8 19.8 9.6

05‐07 LST 11.3 6.9 7.9 14.4 0.0 0.0 0.0 0.0 0.0 1.3 13.2 11.5 7.6

08‐10 LST 15.4 22.0 7.1 9.8 0.0 0.0 0.0 0.0 0.0 0.0 13.6 6.9 7.6

11‐13 LST 10.8 15.4 8.7 12.4 0.0 0.0 0.0 0.0 0.0 0.0 10.4 1.6 5.3

All Hours 12.6 8.0 5.3 5.6 0.0 0.0 0.0 0.0 0.0 0.2 18.1 10.7 7.5

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

14‐16 LST 2.7 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 2.5 0.5

17‐19 LST 4.5 0.5 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.9 2.9 0.8

20‐22 LST 5.5 0.5 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.2 2.7 3.2 1.0

23‐01 LST 6.0 1.8 0.7 0.1 0.0 0.0 0.0 0.0 0.2 1.2 3.7 5.3 1.6

02‐04 LST 7.2 2.6 0.3 0.2 0.0 0.2 0.0 0.1 0.3 1.2 5.0 6.7 2.0

05‐07 LST 7.0 5.8 1.8 0.3 0.1 0.1 0.2 0.2 0.8 3.3 3.9 5.9 2.4

08‐10 LST 5.6 4.4 0.4 0.0 0.0 0.0 0.0 0.0 0.0 1.4 3.3 5.4 1.7

11‐13 LST 2.9 0.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.6 2.5 0.6

All Hours 5.2 2.1 0.5 0.1 0.0 0.0 0.0 0.0 0.2 0.9 2.6 4.3 1.3

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

14‐16 LST 5.1 1.9 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.1 1.9 5.2 1.2

17‐19 LST 7.4 2.3 1.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 3.5 7.7 1.9

20‐22 LST 11.2 3.0 1.8 0.0 0.0 0.0 0.0 0.0 0.3 0.2 6.9 10.8 2.9

23‐01 LST 12.9 6.2 2.4 0.3 0.1 0.0 0.0 0.0 0.2 1.7 8.9 12.7 3.8

02‐04 LST 15.9 9.1 2.5 0.9 0.2 0.2 0.0 0.1 0.8 2.6 13.3 14.7 5.0

05‐07 LST 17.3 12.0 4.0 1.1 0.3 0.1 0.2 0.4 1.7 4.3 13.0 14.8 5.7

08‐10 LST 11.6 7.7 1.1 0.0 0.0 0.0 0.0 0.0 0.2 2.3 9.2 11.3 3.6

11‐13 LST 5.1 1.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 3.2 5.5 1.3

All Hours 10.8 5.5 1.6 0.3 0.1 0.0 0.0 0.1 0.4 1.4 7.5 10.3 3.2

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

14‐16 LST 10.0 4.1 0.7 0.1 0.0 0.0 0.0 0.0 0.0 0.2 5.2 11.7 2.7

17‐19 LST 12.1 5.0 1.6 0.1 0.0 0.1 0.0 0.0 0.1 0.1 6.0 14.9 3.4

20‐22 LST 17.5 6.6 2.3 0.0 0.0 0.0 0.0 0.1 0.3 0.6 9.2 17.4 4.5

23‐01 LST 20.8 9.3 4.0 0.5 0.1 0.0 0.0 0.0 0.3 2.0 12.6 20.2 5.9

02‐04 LST 23.7 13.8 4.5 2.5 0.3 0.4 0.2 0.3 1.0 3.3 17.9 24.1 7.7

05‐07 LST 24.7 16.4 6.6 2.3 0.6 0.3 0.5 0.4 1.9 5.6 18.6 23.5 8.4

08‐10 LST 20.3 13.0 3.5 0.7 0.0 0.0 0.1 0.0 0.3 2.7 13.6 20.9 6.2

11‐13 LST 11.4 5.5 1.3 0.1 0.0 0.0 0.0 0.0 0.0 0.7 6.7 12.2 3.1

All Hours 17.6 9.2 3.1 0.8 0.1 0.1 0.1 0.1 0.5 1.9 11.2 18.1 5.2

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

14‐16 LST 16.6 7.8 2.0 0.3 0.0 0.0 0.0 0.0 0.0 0.7 8.5 19.2 4.6

17‐19 LST 19.3 9.5 2.2 0.2 0.0 0.1 0.0 0.0 0.1 0.9 8.9 23.4 5.4

20‐22 LST 25.1 11.5 3.9 0.8 0.1 0.1 0.1 0.1 0.5 1.6 12.1 26.0 6.9

23‐01 LST 29.8 14.5 5.5 1.1 0.4 0.0 0.1 0.0 0.8 2.4 16.8 27.2 8.3

02‐04 LST 33.0 19.3 7.5 3.6 0.8 0.4 0.5 0.3 1.5 4.2 22.6 32.9 10.6

05‐07 LST 34.1 21.3 9.9 3.9 0.7 1.0 0.8 0.5 3.0 7.9 25.1 35.9 11.9

08‐10 LST 31.2 17.1 5.3 1.4 0.0 0.0 0.1 0.0 0.6 4.5 19.7 32.3 9.3

11‐13 LST 18.9 9.8 2.1 0.3 0.0 0.0 0.0 0.0 0.0 1.0 11.4 24.0 5.6

All Hours 26.0 13.8 4.8 1.4 0.2 0.2 0.2 0.1 0.8 2.9 15.6 27.6 7.8

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

14‐16 LST 26.1 11.5 3.2 0.5 0.1 0.0 0.0 0.0 0.0 1.7 11.4 27.1 6.8

17‐19 LST 25.7 12.7 3.2 0.7 0.1 0.1 0.0 0.0 0.1 1.6 12.1 30.4 7.3

20‐22 LST 32.3 16.2 5.6 1.9 0.3 0.1 0.1 0.2 0.8 3.1 15.4 33.0 9.2

23‐01 LST 38.0 20.0 7.3 3.3 0.8 0.8 0.1 0.1 1.1 4.7 21.1 35.8 11.2

02‐04 LST 38.9 25.9 10.8 5.3 2.1 1.0 0.6 0.7 2.4 6.5 27.0 41.6 13.6

05‐07 LST 42.5 26.9 15.1 6.0 2.3 1.8 0.8 1.2 4.0 11.0 31.1 43.6 15.4

08‐10 LST 41.1 22.6 8.3 3.3 0.2 0.5 0.1 0.1 2.1 5.8 25.6 40.2 12.4

11‐13 LST 30.1 15.6 3.5 1.5 0.0 0.0 0.0 0.1 0.3 1.4 16.2 33.3 8.5

All Hours 34.3 18.9 7.1 2.8 0.7 0.5 0.2 0.3 1.3 4.5 20.0 35.6 10.5

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

14‐16 LST 30.1 13.3 3.6 1.5 0.1 0.0 0.0 0.1 0.2 1.7 12.3 31.5 7.9

17‐19 LST 28.3 13.4 3.8 0.7 0.1 0.1 0.0 0.1 0.2 1.8 13.7 34.3 8.1

20‐22 LST 34.2 17.3 6.1 1.9 0.5 0.1 0.1 0.4 1.0 3.2 18.0 37.0 10.1

23‐01 LST 40.4 20.9 8.3 4.1 1.0 0.9 0.5 0.1 1.1 5.3 23.1 39.7 12.2

02‐04 LST 42.0 27.5 11.7 6.0 3.0 1.5 0.8 0.7 2.5 7.2 29.5 43.9 14.7

05‐07 LST 45.5 27.5 16.2 6.9 3.7 2.4 1.0 1.3 4.0 11.8 32.1 46.6 16.5

08‐10 LST 43.7 24.0 9.8 4.4 1.1 1.0 0.2 0.2 2.1 6.2 27.8 44.6 13.7

11‐13 LST 34.0 16.9 4.6 2.0 0.1 0.0 0.0 0.3 0.3 1.9 18.1 38.5 9.7

All Hours 37.3 20.1 8.0 3.4 1.2 0.7 0.3 0.4 1.4 4.9 21.8 39.5 11.6

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

14‐16 LST 36.9 16.1 6.3 2.1 0.4 0.0 0.0 0.3 0.7 3.0 17.7 37.6 10.1

17‐19 LST 33.7 16.2 5.0 2.2 0.2 0.8 0.0 0.3 0.3 2.7 18.1 38.0 9.9

20‐22 LST 38.5 21.1 7.0 3.1 1.4 0.8 0.1 0.4 1.0 4.4 22.5 41.4 11.9

23‐01 LST 44.7 23.6 9.7 5.1 2.2 1.5 0.5 0.1 1.1 5.5 27.1 44.4 13.9

02‐04 LST 47.7 29.4 14.0 7.4 4.6 3.0 0.8 1.1 2.6 7.9 33.8 47.7 16.7

05‐07 LST 50.2 31.9 19.2 10.0 7.2 3.8 1.6 1.9 4.8 13.4 37.0 50.6 19.2

08‐10 LST 49.1 28.6 13.3 7.6 3.2 2.6 0.4 1.0 2.9 8.7 34.0 50.1 16.7

11‐13 LST 41.5 21.5 7.9 3.6 0.7 0.2 0.0 0.9 1.5 3.7 24.8 44.4 12.5

All Hours 42.8 23.5 10.3 5.1 2.5 1.6 0.4 0.7 1.9 6.2 26.9 44.3 13.9

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

14‐16 LST 43.0 21.6 10.5 5.2 2.7 1.6 0.0 1.1 2.3 4.8 24.6 43.6 13.4

17‐19 LST 38.2 21.2 8.5 3.5 1.5 2.4 0.0 1.2 0.9 4.7 22.3 43.6 12.4

20‐22 LST 42.9 23.9 9.6 4.1 2.5 1.5 0.4 1.2 1.0 5.6 27.5 46.6 14.0

23‐01 LST 49.8 26.6 13.1 6.5 3.4 2.4 0.5 0.8 1.3 7.0 31.5 50.7 16.2

02‐04 LST 53.4 33.1 17.1 9.3 6.4 3.8 1.1 1.3 2.9 10.3 38.4 53.6 19.3

05‐07 LST 55.4 34.5 22.0 11.7 8.8 5.3 1.9 2.0 5.2 15.4 41.8 56.3 21.6

08‐10 LST 54.8 32.6 19.2 14.0 9.9 6.8 1.1 1.2 4.2 11.9 38.3 56.5 20.8

11‐13 LST 48.5 28.4 14.3 8.7 4.3 3.0 0.0 1.5 3.6 8.0 33.1 51.6 17.1

All Hours 48.2 27.7 14.3 7.9 4.9 3.3 0.6 1.3 2.7 8.5 32.2 50.3 16.8