// Station · 18m ago

VVNB

Noi Bai International Airport

CAT MVFR

WIND VRB / 2 kt

VIS 3.1 SM

CEILING Few/scattered only

T/Td 27°C / 27°C

ALTIM 29.56 inHg

WX BR

ELEV 39 FT

21.2212°N / 105.8070°E

LOCATION · Hanoi (Soc Son), VN

WIND

VRB2 kt

VVNB · 39 FT

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

METRIC

NOW · 16Z

+6H

+12H

+18H

WIND

VRB/2

VIS

3.1 SM

CEILING

—

LAYERS

FEW009 SCT073

T / Td

27 / 27

ALTIM

29.56"

// Interpretation

MVFR — visibility 3.1 SM. Light winds at variable/2 kt, visibility 3.1 SM, a few at 900 ft, and scattered at 7,300 ft. Reported weather: mist (BR). Mist is water droplets thinning visibility to between 5/8 and 6 SM — the moist, lighter cousin of fog. 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 VVNB 251600Z VRB02KT 5000 BR FEW009 SCT073 27/27 Q1001 NOSIG

VVNB · day 25 at 16:00 UTC · wind variable at 2 kt · visibility 3.1 SM · a few clouds at 900 ft · scattered layer at 7,300 ft · temp 27°C / dewpoint 27°C · altimeter 29.56" Hg · weather: mist (BR)

// 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 4 ends

11R HDG 110° —CALM —— 12,466'

29L HDG 290° —CALM —— 12,466'

11L HDG 110° —CALM —— 10,499'

29R HDG 290° —CALM —— 10,499'

Pattern altitude: 1,039 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

1,900FT

+1,861 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV39 FT OAT+27°C ISA DELTA+13°C PRESSURE ALT399 FT

// Performance equivalent Operating here right now feels like operating at VVDB (Dien Bien Phu Airport, Dien Bien Phu, elev 1,611 ft) on a standard ISA day.

// Aircraft performance impact MODERATE

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+19%

-13%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+13%

-9%

Light jetCJ4, Phenom 300, M2

+8%

-6%

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 · 2 reported · highest to lowest

// Reported layers (highest → lowest)

SCT073

Scattered · base 7,300 ft AGL · ~3–4 oktas

FEW009

Few · base 900 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER7,300 ft TOTAL COVERAGE~48% (mixed) FREEZING LEVEL13,675 ft VFR MARGINunlimited

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

22:39ZSUNRISE

05:00ZSOLAR NOON

11:21ZSUNSET

11:44ZCIVIL END

CURRENT16:18Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS11:44Z (past) DAY LENGTH12h 41m

Waxing Gibbous

ILLUMINATION94% MOONRISE08:42Z MOONSET21:23Z 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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