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// Station · 17m ago

RKSO

Osan Air Base
CAT MVFR
WIND CALM
VIS 7.0 SM
CEILING OVC at 1,700 ft
T/Td 20.5°C / 20.2°C
ALTIM 29.63 inHg
ELEV 38 FT
37.0915°N / 127.0294°E
LOCATION · Pyeongtaek, KR
N
WIND
000°0 kt
RKSO · 38 FT
© OSM · CartoDB

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

METRIC
NOW · 13Z
+6H
+12H
+18H
WIND
CALM
 
 
 
VIS
7.0 SM
 
 
 
CEILING
OVC017
 
 
 
LAYERS
OVC017
 
 
 
T / Td
21 / 20
 
 
 
ALTIM
29.63"
 
 
 

// Interpretation

MVFR — ceiling 1,700 ft. Winds calm, visibility 7.0 SM, overcast at 1,700 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 RKSO 271355Z 00000KT 7SM OVC017 21/20 A2963 RMK AO2A SLP037 T02050202 FZRANO $

RKSO · day 27 at 13:55 UTC · winds calm · visibility 7.0 SM · overcast at 1,700 ft · temp 21°C / dewpoint 20°C · altimeter 29.63" Hg · sea-level pressure 1003.7 mb

// Runway analysis · computed from current METAR wind

Wind CALM
ALL USABLE · WINDS CALM
N
WIND
000°calm
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS 4 ends
09L HDG 090° CALM 9,004'
27R HDG 270° CALM 9,004'
09R HDG 090° CALM 9,004'
27L HDG 270° CALM 9,004'
Pattern altitude: 1,038 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

1,100FT
+1,062 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↘ -200 FT
1,800 1,400 1,000
24h AGO18h12h6hNOW
FIELD ELEV38 FT OAT+21°C ISA DELTA+6°C PRESSURE ALT325 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

FT 0 5k 10k 15k 20k 25k FRZ LVL · 10,392 FT OVC017 · CEILING RKSO ELEV · 38 FT
// Reported layers (highest → lowest)
OVC017
Overcast · base 1,700 ft AGL · 8 oktas
// Computed
CEILING1,700 ft AGL HIGHEST LAYER1,700 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL10,392 ft VFR MARGIN-1,300 ft

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

20:17ZSUNRISE
03:30ZSOLAR NOON
10:43ZSUNSET
11:13ZCIVIL END
CURRENT14:12Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS11:13Z (past) DAY LENGTH14h 25m
Waxing Gibbous
ILLUMINATION84% MOONRISE05:07Z MOONSET19:32Z FULL MOON IN4 days

// Nearest reporting stations · 5 shown · 60 NM radius

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

© OpenStreetMap · CartoDB · OpenAIP
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