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// Station · 25m ago

RKTU

Cheongju International Airport/Cheongju Air Base (K-59/G-513)
CAT VFR
WIND 300° / 3 kt
VIS 6+ SM
CEILING Few/scattered only
T/Td 27°C / 25°C
ALTIM 29.88 inHg
ELEV 191 FT
36.7156°N / 127.5003°E
LOCATION · Cheongju, KR
N
WIND
300°3 kt
RKTU · 191 FT
© OSM · CartoDB

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

METRIC
NOW · 14Z
+6H
+12H
+18H
WIND
300°/3
 
 
 
VIS
6+ SM
 
 
 
CEILING
 
 
 
LAYERS
SCT040
 
 
 
T / Td
27 / 25
 
 
 
ALTIM
29.88"
 
 
 

// Interpretation

VFR with light winds at 300°/3 kt. Visibility 6+ SM and scattered at 4,000 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 RKTU 111400Z 30003KT 9999 SCT040 27/25 Q1012

RKTU · day 11 at 14:00 UTC · wind from 300° at 3 kt · visibility 6+ SM · scattered layer at 4,000 ft · temp 27°C / dewpoint 25°C · altimeter 29.88" Hg

// Runway analysis · computed from current METAR wind

Wind 300° @ 3 kt
ALL USABLE · WINDS CALM
N
WIND
300°3 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS 4 ends
06L HDG 060° CALM 9,000'
24R HDG 240° CALM 9,000'
06R HDG 060° CALM 9,000'
24L HDG 240° CALM 9,000'
Pattern altitude: 1,191 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

1,700FT
+1,509 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↗ +500 FT
2,900 1,850 800
24h AGO18h12h6hNOW
FIELD ELEV191 FT OAT+27°C ISA DELTA+12°C PRESSURE ALT227 FT
// Performance equivalent Operating here right now feels like operating at RKSC (Surisan Helipad, Gunpo, elev 1,424 ft) on a standard ISA day.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+17%
-12%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+12%
-8%
Light jetCJ4, Phenom 300, M2
+7%
-5%

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

FT 0 5k 10k 15k 20k 25k FRZ LVL · 13,827 FT SCT040 RKTU ELEV · 191 FT
// Reported layers (highest → lowest)
SCT040
Scattered · base 4,000 ft AGL · ~3–4 oktas
// Computed
CEILING HIGHEST LAYER4,000 ft TOTAL COVERAGE~40% (mixed) FREEZING LEVEL13,827 ft VFR MARGINunlimited

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

20:20ZSUNRISE
03:36ZSOLAR NOON
10:52ZSUNSET
11:22ZCIVIL END
CURRENT14:25Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS11:22Z (past) DAY LENGTH14h 31m
Waning Crescent
ILLUMINATION11% MOONRISE17:45Z MOONSET08:16Z FULL MOON IN18 days

// Nearest reporting stations · 3 shown · 60 NM radius

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

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