// Station · 1h 0m ago · STALE

ZLLL

Lanzhou Zhongchuan International Airport

CAT VFR

WIND 210° / 6 kt

VIS 6+ SM

CEILING Few/scattered only

T/Td 15°C / 14°C

ALTIM 30.15 inHg

ELEV 6,388 FT

36.5152°N / 103.6200°E

LOCATION · Lanzhou (Yongdeng), CN

WIND

210°6 kt

ZLLL · 6,388 FT

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

METRIC

NOW · 14Z

+6H

+12H

+18H

WIND

210°/6

VIS

6+ SM

CEILING

—

LAYERS

FEW004 SCT010

T / Td

15 / 14

ALTIM

30.15"

// Interpretation

VFR with light winds at 210°/6 kt. Visibility 6+ SM and a few at 400 ft, and scattered at 1,000 ft. 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 ZLLL 111400Z 21003MPS 9999 FEW004 SCT010 15/14 Q1021 NOSIG

ZLLL · day 11 at 14:00 UTC · wind from 210° at 6 kt · visibility 6+ SM · a few clouds at 400 ft · scattered layer at 1,000 ft · temp 15°C / dewpoint 14°C · altimeter 30.15" Hg

// Runway analysis · computed from current METAR wind

Wind 210° @ 6 kt

3 USABLE · 3 AVOID

WIND

210°6 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 3 usable

19★ HDG 190° H6 kt X2 kt RIGHT PRIMARY · 13,123'

18L HDG 180° H5 kt X3 kt RIGHT 13,123'

18R HDG 180° H5 kt X3 kt RIGHT 11,811'

TAILWIND ENDS · AVOID 3 ends

36R HDG 360° T5 kt X3 kt LEFT —

36L HDG 360° T5 kt X3 kt LEFT —

01 HDG 010° T6 kt X2 kt LEFT —

Pattern altitude: 7,388 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 +12°C

7,600FT

+1,212 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↘ -400 FT

24h AGO18h12h6hNOW

FIELD ELEV6,388 FT OAT+15°C ISA DELTA+12°C PRESSURE ALT6,158 FT

// Performance equivalent Operating here right now feels like operating at ZLXN (Xining Caojiabao International Airport, Haidong (Huzhu Tu Autonomous County), elev 7,119 ft) on a standard ISA day.

// Aircraft performance impact DANGEROUS

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+76%

-53%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+53%

-34%

Light jetCJ4, Phenom 300, M2

+30%

-23%

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 · 2 reported · highest to lowest

// Reported layers (highest → lowest)

SCT010

Scattered · base 1,000 ft AGL · ~3–4 oktas

FEW004

Few · base 400 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER1,000 ft TOTAL COVERAGE~48% (mixed) FREEZING LEVEL13,964 ft VFR MARGINunlimited

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

21:57ZSUNRISE

05:12ZSOLAR NOON

12:26ZSUNSET

12:56ZCIVIL END

CURRENT15:00Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS12:56Z (past) DAY LENGTH14h 29m

Waning Crescent

ILLUMINATION11% MOONRISE19:22Z MOONSET09:52Z FULL MOON IN18 days

// Nearest reporting stations

No nearby reporting stations found within 200 NM of ZLLL.

// Area map · 60 NM radius · CartoDB Dark Matter + aeronautical overlay

AIRSPACE

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