// Station · 19m ago

ZGNN

Nanning Wuxu International Airport

CAT VFR

WIND VRB / 2 kt

VIS 6+ SM

CEILING CLR

T/Td 26°C / 25°C

ALTIM 29.50 inHg

ELEV 421 FT

22.5981°N / 108.1819°E

LOCATION · Nanning (Jiangnan), CN

WIND

VRB2 kt

ZGNN · 421 FT

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

METRIC

NOW · 21Z

+6H

+12H

+18H

WIND

VRB/2

VIS

6+ SM

CEILING

CLR

LAYERS

—

T / Td

26 / 25

ALTIM

29.50"

// Interpretation

VFR with light winds at variable/2 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 ZGNN 112100Z VRB01MPS CAVOK 26/25 Q0999 NOSIG

ZGNN · day 11 at 21:00 UTC · wind variable at 2 kt · visibility 6+ SM · temp 26°C / dewpoint 25°C · altimeter 29.50" Hg

// 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 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 · 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 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

CURRENT21:19Z DAYLIGHT REMAINING14h 17m VFR NIGHT BEGINS12:01Z (14h 42m) DAY LENGTH13h 25m

Waning Crescent

ILLUMINATION9% MOONRISE19:49Z MOONSET09:14Z FULL MOON IN18 days

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

VVVD

IFR

Van Don International Airport · Van Don

WIND: 070° / 3 kt
VIS: 6+ SM
CEILING: BKN009
DIST: 98 NM SW
AGE: 19m ago

VVCI

VFR

Cat Bi International Airport · Haiphong (Hai An)

WIND: 060° / 2 kt
VIS: 6+ SM
CEILING: SCT018
DIST: 134 NM SW
AGE: 19m ago

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

AIRSPACE

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