// Station · 7h 2m ago · STALE · HARD STALE

RJOY

Yao Airport

CAT VFR

WIND 290° / 5 kt

VIS 6+ SM

CEILING Few/scattered only

T/Td 31°C / 24°C

ALTIM 29.83 inHg

ELEV 39 FT

34.5963°N / 135.6030°E

LOCATION · Yao, JP

WIND

290°5 kt

RJOY · 39 FT

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

METRIC

NOW · 10Z

+6H

+12H

+18H

WIND

290°/5

VIS

6+ SM

CEILING

—

LAYERS

FEW020

T / Td

31 / 24

ALTIM

29.83"

// Interpretation

VFR with light winds at 290°/5 kt. Visibility 6+ SM and a few at 2,000 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 RJOY 251000Z 29005KT 9999 FEW020 31/24 Q1010

RJOY · day 25 at 10:00 UTC · wind from 290° at 5 kt · visibility 6+ SM · a few clouds at 2,000 ft · temp 31°C / dewpoint 24°C · altimeter 29.83" Hg

// Runway analysis · computed from current METAR wind

Wind 290° @ 5 kt

2 USABLE · 2 AVOID

WIND

290°5 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 2 usable

27★ HDG 270° H5 kt X2 kt RIGHT PRIMARY · 4,890'

31 HDG 310° H5 kt X2 kt LEFT 3,940'

TAILWIND ENDS · AVOID 2 ends

09 HDG 090° T5 kt X2 kt LEFT —

13 HDG 130° T5 kt X2 kt RIGHT —

Pattern altitude: 1,039 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 +16°C

2,100FT

+2,061 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV39 FT OAT+31°C ISA DELTA+16°C PRESSURE ALT134 FT

// Performance equivalent Operating here right now feels like operating at RJAF (Shinshu-Matsumoto Airport, Matsumoto, elev 2,182 ft) on a standard ISA day.

// Aircraft performance impact SIGNIFICANT

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+21%

-15%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+15%

-9%

Light jetCJ4, Phenom 300, M2

+8%

-6%

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)

FEW020

Few · base 2,000 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER2,000 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL15,696 ft VFR MARGINunlimited

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

20:27ZSUNRISE

03:01ZSOLAR NOON

09:34ZSUNSET

10:00ZCIVIL END

CURRENT17:02Z DAYLIGHT REMAINING16h 32m VFR NIGHT BEGINS10:00Z (16h 58m) DAY LENGTH13h 07m

Waxing Gibbous

ILLUMINATION94% MOONRISE06:31Z MOONSET19:38Z FULL MOON IN2 days

// Nearest reporting stations

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

AIRSPACE

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