// Station · 34m ago

RJTT

Tokyo Haneda International Airport

CAT MVFR

WIND 020° / 16 kt

VIS 6+ SM

CEILING BKN at 1,700 ft

T/Td 21°C / 18°C

ALTIM 30.09 inHg

ELEV 35 FT

35.5497°N / 139.7870°E

LOCATION · Tokyo, JP

WIND

020°16 kt

RJTT · 35 FT

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

METRIC

NOW · 00Z

+6H

+12H

+18H

WIND

020°/16

VIS

6+ SM

CEILING

BKN017

LAYERS

BKN017 BKN040

T / Td

21 / 18

ALTIM

30.09"

// Interpretation

MVFR — ceiling 1,700 ft. Brisk winds at 020°/16 kt, visibility 6+ SM, broken at 1,700 ft, and broken at 4,000 ft. Would drop to IFR below 1,000 ft ceiling or 3 SM visibility, or rise back to VFR above 3,000 ft and 5 SM.

Loading TAF forecast narrative…

SOURCES · NOAA Aviation Weather Center METAR (TAF loading…)

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// Raw observation METAR string + decoded

METAR RJTT 170000Z 02016KT 9999 BKN017 BKN040 21/18 Q1019 NOSIG

RJTT · day 17 at 00:00 UTC · wind from 020° at 16 kt · visibility 6+ SM · broken layer at 1,700 ft · broken layer at 4,000 ft · temp 21°C / dewpoint 18°C · altimeter 30.09" Hg

// Runway analysis · computed from current METAR wind

Wind 020° @ 16 kt

4 USABLE · 4 AVOID · 2 CAUTION

WIND

020°16 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 4 usable

04★ HDG 040° H15 kt X5 kt LEFT PRIMARY · 8,202'

05 HDG 050° H14 kt X8 kt LEFT 8,202'

34R HDG 340° H12 kt X10 kt RIGHT ⚠ HIGH XW · 63%

34L HDG 340° H12 kt X10 kt RIGHT ⚠ HIGH XW · 63%

TAILWIND ENDS · AVOID 4 ends

16L HDG 160° T12 kt X10 kt LEFT —

16R HDG 160° T12 kt X10 kt LEFT —

23 HDG 230° T14 kt X8 kt RIGHT —

22 HDG 220° T15 kt X5 kt RIGHT —

Pattern altitude: 1,035 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

600FT

+565 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV35 FT OAT+21°C ISA DELTA+6°C PRESSURE ALT-136 FT

// Performance equivalent Operating here right now feels like operating at RJTY (Yokota Air Base, Fussa, elev 463 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+6%

-4%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+4%

-3%

Light jetCJ4, Phenom 300, M2

+2%

-2%

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 · 2 reported · highest to lowest

// Reported layers (highest → lowest)

BKN040

Broken · base 4,000 ft AGL · ~5–7 oktas

BKN017

Broken · base 1,700 ft AGL · ~5–7 oktas

// Computed

CEILING1,700 ft AGL HIGHEST LAYER4,000 ft TOTAL COVERAGE~83% (mostly covered) FREEZING LEVEL10,641 ft VFR MARGIN-1,300 ft

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

20:25ZSUNRISE

02:37ZSOLAR NOON

08:48ZSUNSET

09:13ZCIVIL END

CURRENT00:34Z DAYLIGHT REMAINING8h 13m VFR NIGHT BEGINS09:13Z (8h 39m) DAY LENGTH12h 22m

Waxing Crescent

ILLUMINATION27% MOONRISE00:37Z MOONSET13:00Z FULL MOON IN10 days

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

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