// Station · 21m ago

KSEA

Seattle–Tacoma International Airport

CAT VFR

WIND 360° / 10 kt

VIS 10+ SM

CEILING CLR

T/Td 22.2°C / 10°C

ALTIM 30.07 inHg

ELEV 433 FT

47.4479°N / 122.3103°W

LOCATION · Seattle, US

WIND

360°10 kt

KSEA · 433 FT

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

METRIC

NOW · 00Z

+6H

+12H

+18H

WIND

360°/10

VIS

10+ SM

CEILING

CLR

LAYERS

—

T / Td

22 / 10

ALTIM

30.07"

// Interpretation

VFR with moderate winds at 360°/10 kt. Visibility better than 10 statute miles and no reported cloud layers. 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 170053Z 36010KT 10SM CLR 22/10 A3007 RMK AO2 SLP187 T02220100 $

KSEA · day 17 at 00:53 UTC · wind from 360° at 10 kt · visibility 10+ SM · temp 22°C / dewpoint 10°C · altimeter 30.07" Hg · automated station w/ precipitation discriminator · sea-level pressure 1018.7 mb

// Runway analysis · computed from current METAR wind

Wind 360° @ 10 kt

3 USABLE · 3 AVOID

WIND

360°10 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 3 usable

34C★ HDG 340° H9 kt X3 kt RIGHT PRIMARY · 9,426'

34R HDG 340° H9 kt X3 kt RIGHT 11,901'

34L HDG 340° H9 kt X3 kt RIGHT 8,500'

TAILWIND ENDS · AVOID 3 ends

16C HDG 160° T9 kt X3 kt LEFT —

16L HDG 160° T9 kt X3 kt LEFT —

16R HDG 160° T9 kt X3 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 +8°C

1,200FT

+767 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV433 FT OAT+22°C ISA DELTA+8°C PRESSURE ALT280 FT

// Performance equivalent Operating here right now feels like operating at KALW (Walla Walla Regional Airport, Walla Walla, elev 1,194 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+12%

-8%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+8%

-5%

Light jetCJ4, Phenom 300, M2

+5%

-4%

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 · clear · no layers reported

// Reported layers (highest → lowest)

CLR

No reported cloud layers — clear sky from surface to reporting ceiling.

// Computed

CEILING— HIGHEST LAYER— TOTAL COVERAGEclear FREEZING LEVEL11,645 ft VFR MARGINunlimited

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

13:49ZSUNRISE

20:05ZSOLAR NOON

02:21ZSUNSET

02:52ZCIVIL END

CURRENT01:14Z DAYLIGHT REMAINING1h 06m VFR NIGHT BEGINS02:52Z (1h 37m) DAY LENGTH12h 32m

Waxing Crescent

ILLUMINATION28% MOONRISE18:02Z MOONSET06:35Z FULL MOON IN10 days

// Nearest reporting stations

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

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