// Station · 15m ago

NZCH

Christchurch International Airport

CAT VFR

WIND 020° / 3 kt

VIS 6+ SM

CEILING CLR

T/Td 8°C / 7°C

ALTIM 30.00 inHg

ELEV 123 FT

43.4890°S / 172.5321°E

LOCATION · Christchurch, NZ

WIND

020°3 kt

NZCH · 123 FT

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

METRIC

NOW · 18Z

+6H

+12H

+18H

WIND

020°/3

VIS

6+ SM

CEILING

CLR

LAYERS

—

T / Td

8 / 7

ALTIM

30.00"

// Interpretation

VFR with light winds at 020°/3 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 NZCH 251800Z AUTO 02003KT 9999 NCD 08/07 Q1016

NZCH · day 25 at 18:00 UTC · wind from 020° at 3 kt · visibility 6+ SM · temp 8°C / dewpoint 7°C · altimeter 30.00" Hg

// Runway analysis · computed from current METAR wind

Wind 020° @ 3 kt

ALL USABLE · WINDS CALM

WIND

020°3 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 6 ends

02 HDG 020° —CALM —— 10,787'

20 HDG 200° —CALM —— 10,787'

11 HDG 110° —CALM —— 5,587'

29 HDG 290° —CALM —— 5,587'

01 HDG 010° —CALM —— 1,690'

19 HDG 190° —CALM —— 1,690'

Pattern altitude: 1,123 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 -7°C

-800FT

-923 FT BELOW FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV123 FT OAT+8°C ISA DELTA-7°C PRESSURE ALT41 FT

// Performance equivalent Your aircraft will perform as if it's at a field -800 ft high on a standard ISA day — that's -923 ft above NZCH's actual elevation.

// Aircraft performance impact ENHANCED

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+0%

-0%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+0%

-0%

Light jetCJ4, Phenom 300, M2

+0%

-0%

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 LEVEL4,163 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC+12)

19:09ZSUNRISE

00:33ZSOLAR NOON

05:57ZSUNSET

06:26ZCIVIL END

CURRENT18:15Z DAYLIGHT REMAINING11h 42m VFR NIGHT BEGINS06:26Z (12h 11m) DAY LENGTH10h 47m

Waxing Gibbous

ILLUMINATION94% MOONRISE05:16Z MOONSET16:03Z FULL MOON IN2 days

// Nearest reporting stations

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

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