// Station · 27m ago

RJAF

Shinshu-Matsumoto Airport

CAT VFR

WIND 150° / 12 kt

VIS 6+ SM

CEILING Few/scattered only

T/Td 23°C / 14°C

ALTIM 29.97 inHg

ELEV 2,182 FT

36.1668°N / 137.9230°E

LOCATION · Matsumoto, JP

WIND

150°12 kt

RJAF · 2,182 FT

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

METRIC

NOW · 02Z

+6H

+12H

+18H

WIND

150°/12

VIS

6+ SM

CEILING

—

LAYERS

FEW025

T / Td

23 / 14

ALTIM

29.97"

// Interpretation

VFR with moderate winds at 150°/12 kt. Visibility 6+ SM and a few at 2,500 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 RJAF 130200Z 15012KT 110V190 9999 FEW025 23/14 Q1015

RJAF · day 13 at 02:00 UTC · wind from 150° at 12 kt · visibility 6+ SM · a few clouds at 2,500 ft · temp 23°C / dewpoint 14°C · altimeter 29.97" Hg

// Runway analysis · computed from current METAR wind

Wind 150° @ 12 kt

1 USABLE · 1 AVOID

WIND

150°12 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

18★ HDG 180° H10 kt X6 kt LEFT PRIMARY · 6,560'

TAILWIND ENDS · AVOID 1 ends

36 HDG 360° T10 kt X6 kt RIGHT —

Pattern altitude: 3,182 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 +12°C

3,600FT

+1,418 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV2,182 FT OAT+23°C ISA DELTA+12°C PRESSURE ALT2,129 FT

// Performance equivalent Your aircraft will perform as if it's at a field 3,600 ft high on a standard ISA day — that's +1,418 ft above RJAF's actual elevation.

// Aircraft performance impact MODERATE

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+36%

-25%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+25%

-16%

Light jetCJ4, Phenom 300, M2

+14%

-11%

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)

FEW025

Few · base 2,500 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER2,500 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL13,798 ft VFR MARGINunlimited

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

20:53ZSUNRISE

02:35ZSOLAR NOON

08:17ZSUNSET

08:43ZCIVIL END

CURRENT02:27Z DAYLIGHT REMAINING5h 50m VFR NIGHT BEGINS08:43Z (6h 16m) DAY LENGTH11h 23m

Waxing Crescent

ILLUMINATION3% MOONRISE22:17Z MOONSET09:41Z FULL MOON IN13 days

// Nearest reporting stations

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

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