// Station · 18m ago

VVDN

Da Nang International Airport

CAT VFR

WIND 230° / 2 kt

VIS 6+ SM

CEILING Few/scattered only

T/Td 30°C / 22°C

ALTIM 29.65 inHg

ELEV 33 FT

16.0439°N / 108.1990°E

LOCATION · Da Nang, VN

WIND

230°2 kt

VVDN · 33 FT

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

METRIC

NOW · 16Z

+6H

+12H

+18H

WIND

230°/2

VIS

6+ SM

CEILING

—

LAYERS

FEW020

T / Td

30 / 22

ALTIM

29.65"

// Interpretation

VFR with light winds at 230°/2 kt. Visibility 6+ SM and a few at 2,000 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 VVDN 251600Z 23002KT 9999 FEW020 30/22 Q1004 NOSIG

VVDN · day 25 at 16:00 UTC · wind from 230° at 2 kt · visibility 6+ SM · a few clouds at 2,000 ft · temp 30°C / dewpoint 22°C · altimeter 29.65" Hg

// Runway analysis · computed from current METAR wind

Wind 230° @ 2 kt

ALL USABLE · WINDS CALM

WIND

230°2 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 4 ends

17L HDG 170° —CALM —— 11,483'

35R HDG 350° —CALM —— 11,483'

17R HDG 170° —CALM —— 10,000'

35L HDG 350° —CALM —— 10,000'

Pattern altitude: 1,033 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

2,200FT

+2,167 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV33 FT OAT+30°C ISA DELTA+16°C PRESSURE ALT305 FT

// Performance equivalent Operating here right now feels like operating at VVPK (Pleiku Airport, Pleiku, elev 2,434 ft) on a standard ISA day.

// Aircraft performance impact SIGNIFICANT

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+22%

-15%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+15%

-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. 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)

FEW020

Few · base 2,000 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER2,000 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL15,185 ft VFR MARGINunlimited

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

22:34ZSUNRISE

04:50ZSOLAR NOON

11:07ZSUNSET

11:29ZCIVIL END

CURRENT16:18Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS11:29Z (past) DAY LENGTH12h 32m

Waxing Gibbous

ILLUMINATION94% MOONRISE08:37Z MOONSET21:09Z 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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