// Station · 8m ago

VVDL

Lien Khuong Airport

CAT VFR

WIND VRB / 2 kt

VIS 6+ SM

CEILING Few/scattered only

T/Td 25°C / 25°C

ALTIM 30.15 inHg

ELEV 3,156 FT

11.7506°N / 108.3670°E

LOCATION · Da Lat, VN

WIND

VRB2 kt

VVDL · 3,156 FT

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

METRIC

NOW · 01Z

+6H

+12H

+18H

WIND

VRB/2

VIS

6+ SM

CEILING

—

LAYERS

SCT013

T / Td

25 / 25

ALTIM

30.15"

// Interpretation

VFR with light winds at variable/2 kt. Visibility 6+ SM and scattered at 1,300 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 VVDL 130100Z VRB02KT 9999 SCT013 25/25 Q1021 NOSIG

VVDL · day 13 at 01:00 UTC · wind variable at 2 kt · visibility 6+ SM · scattered layer at 1,300 ft · temp 25°C / dewpoint 25°C · altimeter 30.15" Hg

// Runway analysis · computed from current METAR wind

Wind VRB @ 2 kt

ALL USABLE · WINDS CALM

WIND

VRB2 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 2 ends

09 HDG 090° —CALM —— 10,663'

27 HDG 270° —CALM —— 10,663'

Pattern altitude: 4,156 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 +16°C

4,800FT

+1,644 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↘ -200 FT

24h AGO18h12h6hNOW

FIELD ELEV3,156 FT OAT+25°C ISA DELTA+16°C PRESSURE ALT2,926 FT

// Performance equivalent Your aircraft will perform as if it's at a field 4,800 ft high on a standard ISA day — that's +1,644 ft above VVDL's actual elevation.

// Aircraft performance impact MODERATE

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+48%

-34%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+34%

-22%

Light jetCJ4, Phenom 300, M2

+19%

-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. 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 · 1 reported · highest to lowest

// Reported layers (highest → lowest)

SCT013

Scattered · base 1,300 ft AGL · ~3–4 oktas

// Computed

CEILING— HIGHEST LAYER1,300 ft TOTAL COVERAGE~40% (mixed) FREEZING LEVEL15,782 ft VFR MARGINunlimited

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

22:36ZSUNRISE

04:34ZSOLAR NOON

10:31ZSUNSET

10:52ZCIVIL END

CURRENT01:08Z DAYLIGHT REMAINING9h 23m VFR NIGHT BEGINS10:52Z (9h 44m) DAY LENGTH11h 54m

Waxing Crescent

ILLUMINATION3% MOONRISE23:58Z MOONSET11:52Z FULL MOON IN13 days

// Nearest reporting stations

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

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