// Station · 4h 54m ago · STALE

VTUD

Udon Thani International Airport

CAT VFR

WIND 120° / 4 kt

VIS 6+ SM

CEILING CLR

T/Td 26°C / 25°C

ALTIM 29.62 inHg

ELEV 579 FT

17.3862°N / 102.7886°E

LOCATION · Udon Thani, TH

WIND

120°4 kt

VTUD · 579 FT

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

METRIC

NOW · 15Z

+6H

+12H

+18H

WIND

120°/4

VIS

6+ SM

CEILING

CLR

LAYERS

—

T / Td

26 / 25

ALTIM

29.62"

// Interpretation

VFR with light winds at 120°/4 kt. Visibility 6+ SM and no reported cloud layers. 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 VTUD 111500Z 12004KT CAVOK 26/25 Q1003 NOSIG

VTUD · day 11 at 15:00 UTC · wind from 120° at 4 kt · visibility 6+ SM · temp 26°C / dewpoint 25°C · altimeter 29.62" Hg

// Runway analysis · computed from current METAR wind

Wind 120° @ 4 kt

ALL USABLE · WINDS CALM

WIND

120°4 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 2 ends

12 HDG 120° —CALM —— 10,000'

30 HDG 300° —CALM —— 10,000'

Pattern altitude: 1,579 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 +13°C

2,400FT

+1,821 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↗ +300 FT

24h AGO18h12h6hNOW

FIELD ELEV579 FT OAT+26°C ISA DELTA+13°C PRESSURE ALT880 FT

// Performance equivalent Your aircraft will perform as if it's at a field 2,400 ft high on a standard ISA day — that's +1,821 ft above VTUD's actual elevation.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+24%

-17%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+17%

-11%

Light jetCJ4, Phenom 300, M2

+10%

-7%

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 · clear · no layers reported

// Reported layers (highest → lowest)

CLR

No reported cloud layers — clear sky from surface to reporting ceiling.

// Computed

CEILING— HIGHEST LAYER— TOTAL COVERAGEclear FREEZING LEVEL13,710 ft VFR MARGINunlimited

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

22:42ZSUNRISE

05:15ZSOLAR NOON

11:48ZSUNSET

12:12ZCIVIL END

CURRENT19:54Z DAYLIGHT REMAINING15h 53m VFR NIGHT BEGINS12:12Z (16h 17m) DAY LENGTH13h 05m

Waning Crescent

ILLUMINATION10% MOONRISE20:18Z MOONSET09:23Z FULL MOON IN18 days

// Nearest reporting stations · 1 shown · 60 NM radius

VTUK

VFR

Khon Kaen Airport · Khon Kaen

WIND: 200° / 6 kt
VIS: 6+ SM
CEILING: BKN080
DIST: 55 NM S
AGE: 54m ago

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

AIRSPACE

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