// Station · 50m ago

VLLN

Luang Namtha Airport

CAT VFR

WIND 090° / 2 kt

VIS 6+ SM

CEILING BKN at 10,000 ft

T/Td 30°C / 26°C

ALTIM 29.71 inHg

ELEV 1,968 FT

20.9670°N / 101.4000°E

LOCATION · Luang Namtha, LA

WIND

090°2 kt

VLLN · 1,968 FT

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

METRIC

NOW · 11Z

+6H

+12H

+18H

WIND

090°/2

VIS

6+ SM

CEILING

BKN100

LAYERS

SCT020 BKN100

T / Td

30 / 26

ALTIM

29.71"

// Interpretation

VFR — ceiling 10,000 ft. Light winds at 090°/2 kt, visibility 6+ SM, scattered at 2,000 ft, and broken at 10,000 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 VLLN 271100Z 09002KT 9999 SCT020 BKN100 30/26 Q1006 NOSIG

VLLN · day 27 at 11:00 UTC · wind from 090° at 2 kt · visibility 6+ SM · scattered layer at 2,000 ft · broken layer at 10,000 ft · temp 30°C / dewpoint 26°C · altimeter 29.71" Hg

// Runway analysis · computed from current METAR wind

Wind 090° @ 2 kt

ALL USABLE · WINDS CALM

WIND

090°2 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 2 ends

18 HDG 180° —CALM —— 5,249'

36 HDG 360° —CALM —— 5,249'

Pattern altitude: 2,968 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 +19°C

4,500FT

+2,532 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↗ +0 FT

24h AGO18h12h6hNOW

FIELD ELEV1,968 FT OAT+30°C ISA DELTA+19°C PRESSURE ALT2,181 FT

// Performance equivalent Your aircraft will perform as if it's at a field 4,500 ft high on a standard ISA day — that's +2,532 ft above VLLN's actual elevation.

// Aircraft performance impact SIGNIFICANT

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+45%

-32%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+32%

-20%

Light jetCJ4, Phenom 300, M2

+18%

-14%

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)

BKN100

Broken · base 10,000 ft AGL · ~5–7 oktas

SCT020

Scattered · base 2,000 ft AGL · ~3–4 oktas

// Computed

CEILING10,000 ft AGL HIGHEST LAYER10,000 ft TOTAL COVERAGE~83% (mostly covered) FREEZING LEVEL17,120 ft VFR MARGIN+7,000 ft

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

22:34ZSUNRISE

05:12ZSOLAR NOON

11:51ZSUNSET

12:15ZCIVIL END

CURRENT11:50Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS12:15Z (24m) DAY LENGTH13h 16m

Waxing Gibbous

ILLUMINATION83% MOONRISE07:19Z MOONSET20:35Z FULL MOON IN4 days

// Nearest reporting stations

No nearby reporting stations found within 200 NM of VLLN.

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

AIRSPACE

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