// Station · 20m ago

VVNB

Noi Bai International Airport

CAT VFR

WIND 110° / 12 kt

VIS 6+ SM

CEILING CLR

T/Td 38°C / 27°C

ALTIM 29.56 inHg

ELEV 39 FT

21.2212°N / 105.8070°E

LOCATION · Hanoi (Soc Son), VN

WIND

110°12 kt

VVNB · 39 FT

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

METRIC

NOW · 09Z

+6H

+12H

+18H

WIND

110°/12

VIS

6+ SM

CEILING

CLR

LAYERS

—

T / Td

38 / 27

ALTIM

29.56"

// Interpretation

VFR with moderate winds at 110°/12 kt. Visibility 6+ SM and no reported cloud layers. 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 VVNB 270930Z 11012KT CAVOK 38/27 Q1001 NOSIG

VVNB · day 27 at 09:30 UTC · wind from 110° at 12 kt · visibility 6+ SM · temp 38°C / dewpoint 27°C · altimeter 29.56" Hg

// Runway analysis · computed from current METAR wind

Wind 110° @ 12 kt

2 USABLE · 2 AVOID

WIND

110°12 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 2 usable

11L★ HDG 110° H12 kt X0 kt — PRIMARY · 10,499'

11R HDG 110° H12 kt X0 kt — 12,466'

TAILWIND ENDS · AVOID 2 ends

29R HDG 290° T12 kt X0 kt — —

29L HDG 290° T12 kt X0 kt — —

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 +24°C

3,300FT

+3,261 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↘ -100 FT

24h AGO18h12h6hNOW

FIELD ELEV39 FT OAT+38°C ISA DELTA+24°C PRESSURE ALT399 FT

// Performance equivalent Operating here right now feels like operating at VVDL (Lien Khuong Airport, Da Lat, elev 3,156 ft) on a standard ISA day.

// Aircraft performance impact SIGNIFICANT

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+33%

-23%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+23%

-15%

Light jetCJ4, Phenom 300, M2

+13%

-10%

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 · 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 LEVEL19,231 ft VFR MARGINunlimited

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

22:16ZSUNRISE

04:55ZSOLAR NOON

11:33ZSUNSET

11:58ZCIVIL END

CURRENT09:50Z DAYLIGHT REMAINING1h 43m VFR NIGHT BEGINS11:58Z (2h 07m) DAY LENGTH13h 17m

Waxing Gibbous

ILLUMINATION82% MOONRISE06:57Z MOONSET20:14Z FULL MOON IN4 days

// Nearest reporting stations · 2 shown · 100 NM (sparse area)

VVCI

VFR

Cat Bi International Airport · Haiphong (Hai An)

WIND: 150° / 10 kt
VIS: 6+ SM
CEILING: CLR
DIST: 57 NM SE
AGE: 20m ago

VVVD

VFR

Van Don International Airport · Van Don

WIND: 180° / 7 kt
VIS: 6+ SM
CEILING: CLR
DIST: 90 NM E
AGE: 20m ago

// Area map · 100 NM radius · CartoDB Dark Matter + aeronautical overlay

AIRSPACE

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