// Station · 9m ago

ZGNN

Nanning Wuxu International Airport

CAT MVFR

WIND 260° / 2 kt

VIS 3.1 SM

CEILING Few/scattered only

T/Td 26°C / 25°C

ALTIM 29.50 inHg

WX BR

ELEV 421 FT

22.5981°N / 108.1819°E

LOCATION · Nanning (Jiangnan), CN

WIND

260°2 kt

ZGNN · 421 FT

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

METRIC

NOW · 22Z

+6H

+12H

+18H

WIND

260°/2

VIS

3.1 SM

CEILING

—

LAYERS

FEW004

T / Td

26 / 25

ALTIM

29.50"

// Interpretation

MVFR — visibility 3.1 SM. Light winds at 260°/2 kt, visibility 3.1 SM, a few at 400 ft. Reported weather: BR. 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 ZGNN 112200Z 26001MPS 5000 BR FEW004 26/25 Q0999 NOSIG

ZGNN · day 11 at 22:00 UTC · wind from 260° at 2 kt · visibility 3.1 SM · a few clouds at 400 ft · temp 26°C / dewpoint 25°C · altimeter 29.50" Hg · weather: BR

// Runway analysis · computed from current METAR wind

Wind 260° @ 2 kt

ALL USABLE · WINDS CALM

WIND

260°2 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 2 ends

05 HDG 050° —CALM —— 10,499'

23 HDG 230° —CALM —— 10,499'

Pattern altitude: 1,421 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

2,400FT

+1,979 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↗ +100 FT

24h AGO18h12h6hNOW

FIELD ELEV421 FT OAT+26°C ISA DELTA+13°C PRESSURE ALT841 FT

// Performance equivalent Operating here right now feels like operating at ZGHC (Hechi Jinchengjiang Airport, Hechi (Jinchengjiang), elev 2,221 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+24%

-17%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+17%

-11%

Light jetCJ4, Phenom 300, M2

+10%

-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.

// Cloud layers · 1 reported · highest to lowest

// Reported layers (highest → lowest)

FEW004

Few · base 400 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER400 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL13,552 ft VFR MARGINunlimited

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

22:11ZSUNRISE

04:53ZSOLAR NOON

11:36ZSUNSET

12:01ZCIVIL END

CURRENT22:09Z DAYLIGHT REMAINING13h 27m VFR NIGHT BEGINS12:01Z (13h 52m) DAY LENGTH13h 25m

Waning Crescent

ILLUMINATION9% MOONRISE19:51Z MOONSET09:16Z FULL MOON IN18 days

// Nearest reporting stations · 2 shown · 150 NM (sparse area)

VVVD

VFR

Van Don International Airport · Van Don

WIND: 050° / 3 kt
VIS: 6+ SM
CEILING: FEW015
DIST: 98 NM SW
AGE: 9m ago

VVCI

VFR

Cat Bi International Airport · Haiphong (Hai An)

WIND: 040° / 3 kt
VIS: 5.6 SM
CEILING: CLR
DIST: 134 NM SW
AGE: 9m ago

// Area map · 140 NM radius · CartoDB Dark Matter + aeronautical overlay

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