// Station · 52m ago

RKJB

Muan International Airport

CAT IFR

WIND 350° / 4 kt

VIS 1.9 SM

CEILING BKN at 500 ft

T/Td 21°C / 21°C

ALTIM 29.62 inHg

WX -DZ

ELEV 35 FT

34.9914°N / 126.3828°E

LOCATION · Muan (Piseo-ri), KR

WIND

350°4 kt

RKJB · 35 FT

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

METRIC

NOW · 10Z

+6H

+12H

+18H

WIND

350°/4

VIS

1.9 SM

CEILING

BKN005

LAYERS

BKN005

T / Td

21 / 21

ALTIM

29.62"

// Interpretation

IFR conditions — ceiling 500 ft. Light winds at 350°/4 kt, visibility 1.9 SM, broken at 500 ft. Reported weather: -DZ. Would deteriorate to LIFR below 500 ft ceiling or 1 SM, or improve to MVFR above 1,000 ft and 3 SM.

Loading TAF forecast narrative…

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

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// Raw observation METAR string + decoded

METAR RKJB 271000Z 35004KT 3000 -DZ BKN005 21/21 Q1003 NOSIG

RKJB · day 27 at 10:00 UTC · wind from 350° at 4 kt · visibility 1.9 SM · broken layer at 500 ft · temp 21°C / dewpoint 21°C · altimeter 29.62" Hg · weather: -DZ

// Runway analysis · computed from current METAR wind

Wind 350° @ 4 kt

ALL USABLE · WINDS CALM

WIND

350°4 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 2 ends

01 HDG 010° —CALM —— 9,186'

19 HDG 190° —CALM —— 9,186'

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 +7°C

1,100FT

+1,065 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↘ -200 FT

24h AGO18h12h6hNOW

FIELD ELEV35 FT OAT+21°C ISA DELTA+7°C PRESSURE ALT336 FT

// Performance equivalent Operating here right now feels like operating at RKPD (Jeongseok Airport, Jeju Island, elev 1,171 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+11%

-8%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+8%

-5%

Light jetCJ4, Phenom 300, M2

+4%

-3%

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.

// Cloud layers · 1 reported · highest to lowest

// Reported layers (highest → lowest)

BKN005

Broken · base 500 ft AGL · ~5–7 oktas

// Computed

CEILING500 ft AGL HIGHEST LAYER500 ft TOTAL COVERAGE~75% (mostly covered) FREEZING LEVEL10,641 ft VFR MARGIN-2,500 ft

// Sun & Moon · times in Z · bar = local day (UTC+8)

20:25ZSUNRISE

03:33ZSOLAR NOON

10:40ZSUNSET

11:09ZCIVIL END

CURRENT10:52Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS11:09Z (17m) DAY LENGTH14h 15m

Waxing Gibbous

ILLUMINATION83% MOONRISE05:08Z MOONSET19:23Z FULL MOON IN4 days

// Nearest reporting stations · 2 shown · 100 NM (sparse area)

RKJK

IFR → LIFR 15Z

Gunsan Airport / Gunsan Air Base · Gunsan

WIND: 310° / 5 kt
VIS: 1.9 SM
CEILING: OVC010
DIST: 56 NM N
AGE: 32m ago

RKPC

IFR → MVFR 14Z

Jeju International Airport · Jeju City

WIND: 100° / 12 kt
VIS: 2.5 SM
CEILING: BKN005
DIST: 89 NM S
AGE: 52m ago

// Area map · 100 NM radius · CartoDB Dark Matter + aeronautical overlay

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