// Station · 8m ago

KSEA

Seattle–Tacoma International Airport

CAT VFR

WIND 270° / 5 kt

VIS 10+ SM

CEILING BKN at 8,000 ft

T/Td 15°C / 9.4°C

ALTIM 30.00 inHg

ELEV 433 FT

47.4479°N / 122.3103°W

LOCATION · Seattle, US

WIND

270°5 kt

KSEA · 433 FT

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

METRIC

NOW · 14Z

+6H

+12H

+18H

WIND

270°/5

VIS

10+ SM

CEILING

BKN080

LAYERS

FEW020 BKN080 BKN200

T / Td

15 / 9

ALTIM

30.00"

// Interpretation

VFR — ceiling 8,000 ft. Light winds at 270°/5 kt, visibility better than 10 statute miles, a few at 2,000 ft, broken at 8,000 ft, and broken at 20,000 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 KSEA 111453Z 27005KT 10SM FEW020 BKN080 BKN200 15/09 A3000 RMK AO2 SLP163 T01500094 53017 $

KSEA · day 11 at 14:53 UTC · wind from 270° at 5 kt · visibility 10+ SM · a few clouds at 2,000 ft · broken layer at 8,000 ft · broken layer at 20,000 ft · temp 15°C / dewpoint 9°C · altimeter 30.00" Hg · automated station w/ precipitation discriminator · sea-level pressure 1016.3 mb

// Runway analysis · computed from current METAR wind

Wind 270° @ 5 kt

3 USABLE · 3 AVOID

WIND

270°5 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 3 usable

34C★ HDG 340° H2 kt X5 kt LEFT PRIMARY · 9,426'

34R HDG 340° H2 kt X5 kt LEFT 11,901'

34L HDG 340° H2 kt X5 kt LEFT 8,500'

TAILWIND ENDS · AVOID 3 ends

16C HDG 160° T2 kt X5 kt RIGHT —

16L HDG 160° T2 kt X5 kt RIGHT —

16R HDG 160° T2 kt X5 kt RIGHT —

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 +1°C

400FT

-33 FT BELOW FIELD ELEV

// DA · LAST 24 HOURS ↘ -200 FT

24h AGO18h12h6hNOW

FIELD ELEV433 FT OAT+15°C ISA DELTA+1°C PRESSURE ALT351 FT

// Performance equivalent Operating here right now feels like operating at KRLD (Richland Airport, Richland, elev 394 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+4%

-3%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+3%

-2%

Light jetCJ4, Phenom 300, M2

+2%

-1%

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 · 3 reported · highest to lowest

// Reported layers (highest → lowest)

BKN200

Broken · base 20,000 ft AGL · ~5–7 oktas

BKN080

Broken · base 8,000 ft AGL · ~5–7 oktas

FEW020

Few · base 2,000 ft AGL · ~1–2 oktas

// Computed

CEILING8,000 ft AGL HIGHEST LAYER20,000 ft TOTAL COVERAGE~91% (overcast) FREEZING LEVEL8,009 ft VFR MARGIN+5,000 ft

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

12:24ZSUNRISE

20:15ZSOLAR NOON

04:06ZSUNSET

04:45ZCIVIL END

CURRENT15:01Z DAYLIGHT REMAINING13h 05m VFR NIGHT BEGINS04:45Z (13h 44m) DAY LENGTH15h 41m

Waning Crescent

ILLUMINATION11% MOONRISE09:50Z MOONSET01:32Z FULL MOON IN18 days

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

KBFI

VFR

King County International Airport - Boeing Field · Seattle

WIND: VRB / 3 kt
VIS: 10+ SM
CEILING: BKN080
DIST: 5 NM N
AGE: 8m ago

KTIW

VFR

Tacoma Narrows Airport · Tacoma

WIND: 200° / 6 kt
VIS: 10+ SM
CEILING: OVC080
DIST: 15 NM SW
AGE: 8m ago

KPWT

VFR

Bremerton National Airport · Bremerton

WIND: CALM
VIS: 10+ SM
CEILING: FEW018
DIST: 19 NM W
AGE: 5m ago

KTCM

VFR

McChord Air Force Base · Tacoma

WIND: 240° / 5 kt
VIS: 10+ SM
CEILING: OVC070
DIST: 20 NM S
AGE: 1h 6m ago

KPLU

VFR

Pierce County-Thun Field · Puyallup

WIND: CALM
VIS: 9.0 SM
CEILING: OVC075
DIST: 21 NM S
AGE: 6m ago

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

AIRSPACE

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