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// Station · 21m ago

RJTY

Yokota Air Base
CAT VFR
WIND CALM
VIS 10+ SM
CEILING CLR
T/Td 28.8°C / 24.5°C
ALTIM 29.89 inHg
ELEV 463 FT
35.7485°N / 139.3480°E
LOCATION · Fussa, JP
N
WIND
000°0 kt
RJTY · 463 FT
© OSM · CartoDB

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

METRIC
NOW · 15Z
+6H
+12H
+18H
WIND
CALM
 
 
 
VIS
10+ SM
 
 
 
CEILING
CLR
 
 
 
LAYERS
 
 
 
T / Td
29 / 25
 
 
 
ALTIM
29.89"
 
 
 

// Interpretation

VFR with winds calm. 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 RJTY 251555Z AUTO 00000KT 10SM CLR 29/25 A2989 RMK AO2 SLP120 T02880245 $

RJTY · day 25 at 15:55 UTC · winds calm · visibility 10+ SM · temp 29°C / dewpoint 25°C · altimeter 29.89" Hg · automated station w/ precipitation discriminator · sea-level pressure 1012.0 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 2 ends
18 HDG 180° CALM 11,000'
36 HDG 360° CALM 11,000'
Pattern altitude: 1,463 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 +15°C

2,300FT
+1,837 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS loading…
FIELD ELEV463 FT OAT+29°C ISA DELTA+15°C PRESSURE ALT490 FT
// Performance equivalent Operating here right now feels like operating at RJAT (JGSDF Camp Fuji Heliport / Fuji Army Heliport, Gotenba, elev 2,271 ft) on a standard ISA day.
// Aircraft performance impact MODERATE
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+23%
-16%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+16%
-10%
Light jetCJ4, Phenom 300, M2
+9%
-7%

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

FT 0 5k 10k 15k 20k 25k FRZ LVL · 15,008 FT RJTY ELEV · 463 FT
// Reported layers (highest → lowest)
CLR
No reported cloud layers — clear sky from surface to reporting ceiling.
// Computed
CEILING HIGHEST LAYER TOTAL COVERAGEclear FREEZING LEVEL15,008 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC+9)

20:10ZSUNRISE
02:46ZSOLAR NOON
09:21ZSUNSET
09:47ZCIVIL END
CURRENT16:16Z DAYLIGHT REMAINING17h 05m VFR NIGHT BEGINS09:47Z (17h 31m) DAY LENGTH13h 10m
Waxing Gibbous
ILLUMINATION94% MOONRISE06:13Z MOONSET19:23Z FULL MOON IN2 days

// Nearest reporting stations

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

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