// Station · 54m ago

RJAF

Shinshu-Matsumoto Airport

CAT VFR

WIND 150° / 10 kt

VIS 6+ SM

CEILING Few/scattered only

T/Td 22°C / 13°C

ALTIM 30.03 inHg

ELEV 2,182 FT

36.1668°N / 137.9230°E

LOCATION · Matsumoto, JP

WIND

150°10 kt

RJAF · 2,182 FT

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

METRIC

NOW · 01Z

+6H

+12H

+18H

WIND

150°/10

VIS

6+ SM

CEILING

—

LAYERS

FEW025

T / Td

22 / 13

ALTIM

30.03"

// Interpretation

VFR with moderate winds at 150°/10 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 130100Z 15010KT 110V180 9999 FEW025 22/13 Q1017

RJAF · day 13 at 01:00 UTC · wind from 150° at 10 kt · visibility 6+ SM · a few clouds at 2,500 ft · temp 22°C / dewpoint 13°C · altimeter 30.03" Hg

// Runway analysis · computed from current METAR wind

Wind 150° @ 10 kt

1 USABLE · 1 AVOID

WIND

150°10 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

18★ HDG 180° H9 kt X5 kt LEFT PRIMARY · 6,560'

TAILWIND ENDS · AVOID 1 ends

36 HDG 360° T9 kt X5 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 +11°C

3,400FT

+1,218 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV2,182 FT OAT+22°C ISA DELTA+11°C PRESSURE ALT2,070 FT

// Performance equivalent Your aircraft will perform as if it's at a field 3,400 ft high on a standard ISA day — that's +1,218 ft above RJAF's actual elevation.

// Aircraft performance impact MODERATE

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+34%

-24%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+24%

-15%

Light jetCJ4, Phenom 300, M2

+14%

-10%

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 LEVEL13,293 ft VFR MARGINunlimited

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

20:53ZSUNRISE

02:35ZSOLAR NOON

08:17ZSUNSET

08:43ZCIVIL END

CURRENT01:54Z DAYLIGHT REMAINING6h 23m VFR NIGHT BEGINS08:43Z (6h 49m) DAY LENGTH11h 23m

Waxing Crescent

ILLUMINATION3% MOONRISE22:16Z MOONSET09:40Z 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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