// Station · 8m ago

KSEA

Seattle–Tacoma International Airport

CAT VFR

WIND 190° / 5 kt

VIS 10+ SM

CEILING Few/scattered only

T/Td 20.6°C / 13.9°C

ALTIM 29.98 inHg

ELEV 433 FT

47.4479°N / 122.3103°W

LOCATION · Seattle, US

WIND

190°5 kt

KSEA · 433 FT

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

METRIC

NOW · 16Z

+6H

+12H

+18H

WIND

190°/5

VIS

10+ SM

CEILING

—

LAYERS

FEW060

T / Td

21 / 14

ALTIM

29.98"

// Interpretation

VFR with light winds at 190°/5 kt. Visibility better than 10 statute miles and a few at 6,000 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 251653Z 19005KT 10SM FEW060 21/14 A2998 RMK AO2 SLP158 FU FEW060 T02060139 $

KSEA · day 25 at 16:53 UTC · wind from 190° at 5 kt · visibility 10+ SM · a few clouds at 6,000 ft · temp 21°C / dewpoint 14°C · altimeter 29.98" Hg · automated station w/ precipitation discriminator · sea-level pressure 1015.8 mb

// Runway analysis · computed from current METAR wind

Wind 190° @ 5 kt

3 USABLE · 3 AVOID

WIND

190°5 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 3 usable

16C★ HDG 160° H4 kt X2 kt RIGHT PRIMARY · 9,426'

16L HDG 160° H4 kt X2 kt RIGHT 11,901'

16R HDG 160° H4 kt X2 kt RIGHT 8,500'

TAILWIND ENDS · AVOID 3 ends

34C HDG 340° T4 kt X2 kt LEFT —

34R HDG 340° T4 kt X2 kt LEFT —

34L HDG 340° T4 kt X2 kt LEFT —

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 +6°C

1,100FT

+667 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV433 FT OAT+21°C ISA DELTA+6°C PRESSURE ALT371 FT

// Performance equivalent Operating here right now feels like operating at KYKM (Yakima Air Terminal McAllister Field, Yakima, elev 1,099 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+11%

-8%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+8%

-5%

Light jetCJ4, Phenom 300, M2

+4%

-3%

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. Severity rating assumes a standard altimeter setting (29.92" Hg / 1013 hPa); a non-standard setting shifts the effective altitude by roughly 1,000 ft per 1" Hg of deviation.

// Cloud layers · 1 reported · highest to lowest

// Reported layers (highest → lowest)

FEW060

Few · base 6,000 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER6,000 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL10,837 ft VFR MARGINunlimited

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

13:20ZSUNRISE

20:12ZSOLAR NOON

03:05ZSUNSET

03:37ZCIVIL END

CURRENT17:01Z DAYLIGHT REMAINING10h 04m VFR NIGHT BEGINS03:37Z (10h 36m) DAY LENGTH13h 45m

Waxing Gibbous

ILLUMINATION94% MOONRISE23:24Z MOONSET13:09Z FULL MOON IN2 days

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

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