// Station · 8m ago

VVNB

Noi Bai International Airport

CAT MVFR

WIND CALM

VIS 3.7 SM

CEILING CLR

T/Td 28°C / 24°C

ALTIM 30.06 inHg

ELEV 39 FT

21.2212°N / 105.8070°E

LOCATION · Hanoi (Soc Son), VN

WIND

000°0 kt

VVNB · 39 FT

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

METRIC

NOW · 01Z

+6H

+12H

+18H

WIND

CALM

VIS

3.7 SM

CEILING

CLR

LAYERS

—

T / Td

28 / 24

ALTIM

30.06"

// Interpretation

MVFR — visibility 3.7 SM. Winds calm, visibility 3.7 SM, no reported cloud layers. 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 130100Z 00000KT 6000 NSC 28/24 Q1018 NOSIG

VVNB · day 13 at 01:00 UTC · winds calm · visibility 3.7 SM · temp 28°C / dewpoint 24°C · altimeter 30.06" Hg

// Runway analysis · computed from current METAR wind

Wind CALM

ALL USABLE · WINDS CALM

WIND

000°calm

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

1,400FT

+1,361 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV39 FT OAT+28°C ISA DELTA+13°C PRESSURE ALT-103 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

+14%

-10%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+10%

-6%

Light jetCJ4, Phenom 300, M2

+6%

-4%

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 · clear · no layers reported

// Reported layers (highest → lowest)

CLR

No reported cloud layers — clear sky from surface to reporting ceiling.

// Computed

CEILING— HIGHEST LAYER— TOTAL COVERAGEclear FREEZING LEVEL14,180 ft VFR MARGINunlimited

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

22:52ZSUNRISE

04:44ZSOLAR NOON

10:36ZSUNSET

10:58ZCIVIL END

CURRENT01:08Z DAYLIGHT REMAINING9h 27m VFR NIGHT BEGINS10:58Z (9h 50m) DAY LENGTH11h 43m

Waxing Crescent

ILLUMINATION3% MOONRISE00:13Z MOONSET11:57Z 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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