// Station · 11m ago

KNUW

Whidbey Island Naval Air Station (Ault Field)

CAT VFR

WIND 260° / 3 kt

VIS 10+ SM

CEILING BKN at 3,500 ft

T/Td 12.2°C / 8.9°C

ALTIM 29.98 inHg

ELEV 47 FT

48.3518°N / 122.6560°W

LOCATION · Oak Harbor, US

WIND

260°3 kt

KNUW · 47 FT

// Current + 24h forecast · METAR loaded · TAF loading…

METRIC

NOW · 13Z

+6H

+12H

+18H

WIND

260°/3

VIS

10+ SM

CEILING

BKN035

LAYERS

BKN035 OVC070

T / Td

12 / 9

ALTIM

29.98"

// Interpretation

VFR — ceiling 3,500 ft. Light winds at 260°/3 kt, visibility better than 10 statute miles, broken at 3,500 ft, and overcast at 7,000 ft. Would shift to MVFR if the ceiling drops to 3,000 ft or visibility below 5 SM.

Loading TAF forecast narrative…

SOURCES · NOAA Aviation Weather Center METAR (TAF loading…)

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// Raw observation METAR string + decoded

METAR KNUW 111353Z 26003KT 10SM BKN035 OVC070 12/09 A2998 RMK AO2 SLP156 T01220089

KNUW · day 11 at 13:53 UTC · wind from 260° at 3 kt · visibility 10+ SM · broken layer at 3,500 ft · overcast at 7,000 ft · temp 12°C / dewpoint 9°C · altimeter 29.98" Hg · automated station w/ precipitation discriminator · sea-level pressure 1015.6 mb

// Runway analysis · computed from current METAR wind

Wind 260° @ 3 kt

ALL USABLE · WINDS CALM

WIND

260°3 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 4 ends

14 HDG 140° —CALM —— 8,001'

32 HDG 320° —CALM —— 8,001'

07 HDG 070° —CALM —— 7,999'

25 HDG 250° —CALM —— 7,999'

Pattern altitude: 1,047 ft MSL (1,000 ft AGL). Verify pattern direction and altitude with the chart supplement before flying. // On calm winds (<3 kt), all runways are usable — favor the longest or whatever the pattern calls for.

// Density altitude · ISA -3°C

-400FT

-447 FT BELOW FIELD ELEV

// DA · LAST 24 HOURS ↘ -300 FT

24h AGO18h12h6hNOW

FIELD ELEV47 FT OAT+12°C ISA DELTA-3°C PRESSURE ALT-15 FT

// Performance equivalent Operating here right now feels like operating at 7WA5 (Stuart Island Airpark, Friday Harbor, elev 10 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+0%

-0%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+0%

-0%

Light jetCJ4, Phenom 300, M2

+0%

-0%

Approximate using ~10% perf loss / 1,000 ft DA for normally aspirated, scaled by powerplant type. Verify with your aircraft's POH for accurate numbers — especially above 5,000 ft DA where these rules of thumb diverge.

// Cloud layers · 2 reported · highest to lowest

// Reported layers (highest → lowest)

OVC070

Overcast · base 7,000 ft AGL · 8 oktas

BKN035

Broken · base 3,500 ft AGL · ~5–7 oktas

// Computed

CEILING3,500 ft AGL HIGHEST LAYER7,000 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL6,209 ft VFR MARGIN+500 ft

// Sun & Moon · times in Z · bar = local day (UTC-8)

12:22ZSUNRISE

20:17ZSOLAR NOON

04:11ZSUNSET

04:52ZCIVIL END

CURRENT14:04Z DAYLIGHT REMAINING14h 07m VFR NIGHT BEGINS04:52Z (14h 47m) DAY LENGTH15h 49m

Waning Crescent

ILLUMINATION11% MOONRISE09:46Z MOONSET01:35Z FULL MOON IN18 days

// Nearest reporting stations · 5 shown · 60 NM radius

KNRA

MVFR

Coupeville Nolf Airport · Coupeville

WIND: 260° / 7 kt
VIS: 10+ SM
CEILING: OVC028
DIST: 10 NM S
AGE: 18m ago

KBVS

VFR

Skagit Regional Airport · Burlington

WIND: CALM
VIS: 10+ SM
CEILING: OVC032
DIST: 12 NM NE
AGE: 9m ago

KFHR

VFR

Friday Harbor Airport · Friday Harbor

WIND: 230° / 9 kt
VIS: 10+ SM
CEILING: BKN055
DIST: 18 NM NW
AGE: 11m ago

K0S9

MVFR

Jefferson County International Airport · Port Townsend

WIND: 300° / 5 kt
VIS: 10+ SM
CEILING: OVC025
DIST: 19 NM S
AGE: 9m ago

KAWO

MVFR

Arlington Municipal Airport · Arlington

WIND: 340° / 3 kt
VIS: 10+ SM
CEILING: OVC029
DIST: 23 NM SE
AGE: 8m ago

// Area map · 60 NM radius · CartoDB Dark Matter + aeronautical overlay

AIRSPACE

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