// Station · 8m ago

KSEA

Seattle–Tacoma International Airport

CAT VFR

WIND 050° / 3 kt

VIS 10+ SM

CEILING Few/scattered only

T/Td 12.2°C / 8.9°C

ALTIM 29.96 inHg

ELEV 433 FT

47.4479°N / 122.3103°W

LOCATION · Seattle, US

WIND

050°3 kt

KSEA · 433 FT

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

METRIC

NOW · 08Z

+6H

+12H

+18H

WIND

050°/3

VIS

10+ SM

CEILING

—

LAYERS

FEW047

T / Td

12 / 9

ALTIM

29.96"

// Interpretation

VFR with light winds at 050°/3 kt. Visibility better than 10 statute miles and a few at 4,700 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 KSEA 270853Z 05003KT 10SM FEW047 12/09 A2996 RMK AO2 SLP150 T01220089 58005

KSEA · day 27 at 08:53 UTC · wind from 050° at 3 kt · visibility 10+ SM · a few clouds at 4,700 ft · temp 12°C / dewpoint 9°C · altimeter 29.96" Hg · automated station w/ precipitation discriminator · sea-level pressure 1015.0 mb

// Runway analysis · computed from current METAR wind

Wind 050° @ 3 kt

ALL USABLE · WINDS CALM

WIND

050°3 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 6 ends

16L HDG 160° —CALM —— 11,901'

34R HDG 340° —CALM —— 11,901'

16C HDG 160° —CALM —— 9,426'

34C HDG 340° —CALM —— 9,426'

16R HDG 160° —CALM —— 8,500'

34L HDG 340° —CALM —— 8,500'

Pattern altitude: 1,433 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 -2°C

100FT

-333 FT BELOW FIELD ELEV

// DA · LAST 24 HOURS ↗ +200 FT

24h AGO18h12h6hNOW

FIELD ELEV433 FT OAT+12°C ISA DELTA-2°C PRESSURE ALT392 FT

// Performance equivalent Operating here right now feels like operating at WA09 (Roche Harbor Airport, Roche Harbor, elev 100 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+1%

-1%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+1%

-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 · 1 reported · highest to lowest

// Reported layers (highest → lowest)

FEW047

Few · base 4,700 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER4,700 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL6,595 ft VFR MARGINunlimited

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

12:21ZSUNRISE

20:07ZSOLAR NOON

03:54ZSUNSET

04:32ZCIVIL END

CURRENT09:01Z DAYLIGHT REMAINING18h 52m VFR NIGHT BEGINS04:32Z (19h 31m) DAY LENGTH15h 33m

Waxing Gibbous

ILLUMINATION82% MOONRISE21:00Z MOONSET12:33Z FULL MOON IN4 days

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

KBFI

VFR

King County International Airport - Boeing Field · Seattle

WIND: CALM
VIS: 10+ SM
CEILING: CLR
DIST: 5 NM N
AGE: 8m ago

KTIW

VFR

Tacoma Narrows Airport · Tacoma

WIND: CALM
VIS: 10+ SM
CEILING: CLR
DIST: 15 NM SW
AGE: 8m ago

KPWT

VFR → MVFR 11Z

Bremerton National Airport · Bremerton

WIND: CALM
VIS: 10+ SM
CEILING: CLR
DIST: 19 NM W
AGE: 5m ago

KTCM

VFR

McChord Air Force Base · Tacoma

WIND: CALM
VIS: 10+ SM
CEILING: SCT046
DIST: 20 NM S
AGE: 1h 6m ago

KGRF

VFR

Gray Army Air Field · Fort Lewis/Tacoma

WIND: CALM
VIS: 10+ SM
CEILING: SCT047
DIST: 25 NM SW
AGE: 1h 6m ago

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

AIRSPACE

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