// Station · 26m ago

VLVT

Wattay International Airport

CAT MVFR

WIND 120° / 2 kt

VIS 3.7 SM

CEILING OVC at 8,300 ft

T/Td 25°C / 21°C

ALTIM 29.59 inHg

WX DZ

ELEV 564 FT

17.9851°N / 102.5667°E

LOCATION · Vientiane, LA

WIND

120°2 kt

VLVT · 564 FT

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

METRIC

NOW · 14Z

+6H

+12H

+18H

WIND

120°/2

VIS

3.7 SM

CEILING

OVC083

LAYERS

SCT040 OVC083

T / Td

25 / 21

ALTIM

29.59"

// Interpretation

MVFR — visibility 3.7 SM. Light winds at 120°/2 kt, visibility 3.7 SM, scattered at 4,000 ft, and overcast at 8,300 ft. Reported weather: DZ. 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 VLVT 111400Z 12002KT 6000 DZ SCT040 OVC083 25/21 Q1002 NOSIG

VLVT · day 11 at 14:00 UTC · wind from 120° at 2 kt · visibility 3.7 SM · scattered layer at 4,000 ft · overcast at 8,300 ft · temp 25°C / dewpoint 21°C · altimeter 29.59" Hg · weather: DZ

// Runway analysis · computed from current METAR wind

Wind 120° @ 2 kt

ALL USABLE · WINDS CALM

WIND

120°2 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 2 ends

13 HDG 130° —CALM —— 9,843'

31 HDG 310° —CALM —— 9,843'

Pattern altitude: 1,564 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

2,300FT

+1,736 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↗ +0 FT

24h AGO18h12h6hNOW

FIELD ELEV564 FT OAT+25°C ISA DELTA+12°C PRESSURE ALT895 FT

// Performance equivalent Operating here right now feels like operating at VLLN (Luang Namtha Airport, Luang Namtha, elev 1,968 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+23%

-16%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+16%

-10%

Light jetCJ4, Phenom 300, M2

+9%

-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 · 2 reported · highest to lowest

// Reported layers (highest → lowest)

OVC083

Overcast · base 8,300 ft AGL · 8 oktas

SCT040

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

// Computed

CEILING8,300 ft AGL HIGHEST LAYER8,300 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL13,190 ft VFR MARGIN+5,300 ft

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

22:42ZSUNRISE

05:16ZSOLAR NOON

11:50ZSUNSET

12:14ZCIVIL END

CURRENT14:26Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS12:14Z (past) DAY LENGTH13h 08m

Waning Crescent

ILLUMINATION11% MOONRISE20:06Z MOONSET09:14Z FULL MOON IN18 days

// Nearest reporting stations · 3 shown · 100 NM (sparse area)

VTUD

VFR

Udon Thani International Airport · Udon Thani

WIND: VRB / 2 kt
VIS: 6+ SM
CEILING: BKN100
DIST: 38 NM S
AGE: 26m ago

VTUL

MVFR

Loei Airport

WIND: VRB / 1 kt
VIS: 6+ SM
CEILING: OVC030
DIST: 58 NM SW
AGE: 26m ago

VTUK

VFR

Khon Kaen Airport · Khon Kaen

WIND: VRB / 1 kt
VIS: 6+ SM
CEILING: BKN080
DIST: 92 NM S
AGE: 26m ago

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

AIRSPACE

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