// Station · 11m ago

VTBD

Don Mueang International Airport

CAT VFR

WIND 230° / 7 kt

VIS 6+ SM

CEILING Few/scattered only

T/Td 29°C / 22°C

ALTIM 29.80 inHg

ELEV 9 FT

13.9126°N / 100.6070°E

LOCATION · Bangkok, TH

WIND

230°7 kt

VTBD · 9 FT

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

METRIC

NOW · 18Z

+6H

+12H

+18H

WIND

230°/7

VIS

6+ SM

CEILING

—

LAYERS

FEW020 SCT090

T / Td

29 / 22

ALTIM

29.80"

// Interpretation

VFR with light winds at 230°/7 kt. Visibility 6+ SM and a few at 2,000 ft, and scattered at 9,000 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 VTBD 251800Z 23007KT 9999 FEW020 SCT090 29/22 Q1009 NOSIG

VTBD · day 25 at 18:00 UTC · wind from 230° at 7 kt · visibility 6+ SM · a few clouds at 2,000 ft · scattered layer at 9,000 ft · temp 29°C / dewpoint 22°C · altimeter 29.80" Hg

// Runway analysis · computed from current METAR wind

Wind 230° @ 7 kt

2 USABLE · 2 AVOID

WIND

230°7 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 2 usable

21R★ HDG 210° H7 kt X2 kt RIGHT PRIMARY · 12,139'

21L HDG 210° H7 kt X2 kt RIGHT 11,483'

TAILWIND ENDS · AVOID 2 ends

03L HDG 030° T7 kt X2 kt LEFT —

03R HDG 030° T7 kt X2 kt LEFT —

Pattern altitude: 1,009 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 +14°C

1,800FT

+1,791 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV9 FT OAT+29°C ISA DELTA+14°C PRESSURE ALT133 FT

// Performance equivalent Your aircraft will perform as if it's at a field 1,800 ft high on a standard ISA day — that's +1,791 ft above VTBD's actual elevation.

// Aircraft performance impact MODERATE

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+18%

-13%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+13%

-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. 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 · 2 reported · highest to lowest

// Reported layers (highest → lowest)

SCT090

Scattered · base 9,000 ft AGL · ~3–4 oktas

FEW020

Few · base 2,000 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER9,000 ft TOTAL COVERAGE~48% (mixed) FREEZING LEVEL14,655 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC+7)

23:06ZSUNRISE

05:21ZSOLAR NOON

11:35ZSUNSET

11:56ZCIVIL END

CURRENT18:11Z DAYLIGHT REMAINING17h 24m VFR NIGHT BEGINS11:56Z (17h 45m) DAY LENGTH12h 28m

Waxing Gibbous

ILLUMINATION94% MOONRISE09:13Z MOONSET21:41Z FULL MOON IN2 days

// Nearest reporting stations

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

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