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// Station · 21m ago

KBFI

King County International Airport - Boeing Field
CAT VFR
WIND CALM
VIS 10+ SM
CEILING Few/scattered only
T/Td 16.7°C / 9.4°C
ALTIM 30.01 inHg
ELEV 21 FT
47.5270°N / 122.2999°W
LOCATION · Seattle, US
N
WIND
000°0 kt
KBFI · 21 FT
© OSM · CartoDB

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

METRIC
NOW · 15Z
+6H
+12H
+18H
WIND
CALM
 
 
 
VIS
10+ SM
 
 
 
CEILING
 
 
 
LAYERS
FEW028 SCT085
 
 
 
T / Td
17 / 9
 
 
 
ALTIM
30.01"
 
 
 

// Interpretation

VFR with winds calm. Visibility better than 10 statute miles and a few at 2,800 ft, and scattered at 8,500 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 KBFI 111553Z COR 00000KT 10SM FEW028 SCT085 17/09 A3001 RMK AO2 SLP162 T01670094

KBFI · day 11 at 15:53 UTC · winds calm · visibility 10+ SM · a few clouds at 2,800 ft · scattered layer at 8,500 ft · temp 17°C / dewpoint 9°C · altimeter 30.01" Hg · automated station w/ precipitation discriminator · sea-level pressure 1016.2 mb

// Runway analysis · computed from current METAR wind

Wind CALM
ALL USABLE · WINDS CALM
N
WIND
000°calm
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS 4 ends
14R HDG 140° CALM 10,007'
32L HDG 320° CALM 10,007'
14L HDG 140° CALM 3,709'
32R HDG 320° CALM 3,709'
Pattern altitude: 1,021 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
+79 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↘ -400 FT
1,500 650 -200
24h AGO18h12h6hNOW
FIELD ELEV21 FT OAT+17°C ISA DELTA+2°C PRESSURE ALT-70 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 · 2 reported · highest to lowest

FT 0 5k 10k 15k 20k 25k FRZ LVL · 8,455 FT FEW028 SCT085 KBFI ELEV · 21 FT
// Reported layers (highest → lowest)
SCT085
Scattered · base 8,500 ft AGL · ~3–4 oktas
FEW028
Few · base 2,800 ft AGL · ~1–2 oktas
// Computed
CEILING HIGHEST LAYER8,500 ft TOTAL COVERAGE~48% (mixed) FREEZING LEVEL8,455 ft VFR MARGINunlimited

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

12:24ZSUNRISE
20:15ZSOLAR NOON
04:06ZSUNSET
04:46ZCIVIL END
CURRENT16:14Z DAYLIGHT REMAINING11h 52m VFR NIGHT BEGINS04:46Z (12h 32m) DAY LENGTH15h 42m
Waning Crescent
ILLUMINATION11% MOONRISE09:52Z MOONSET01:35Z FULL MOON IN18 days

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

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

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