// Station · 1h 14m ago · STALE

CYHI

Ulukhaktok Holman Airport

CAT VFR

WIND 170° / 7 kt

VIS 10+ SM

CEILING Few/scattered only

T/Td 4°C / 1°C

ALTIM 29.78 inHg

ELEV 117 FT

70.7628°N / 117.8060°W

LOCATION · Ulukhaktok, CA

WIND

170°7 kt

CYHI · 117 FT

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

METRIC

NOW · 00Z

+6H

+12H

+18H

WIND

170°/7

VIS

10+ SM

CEILING

—

LAYERS

FEW016 SCT200

T / Td

4 / 1

ALTIM

29.78"

// Interpretation

VFR with light winds at 170°/7 kt. Visibility better than 10 statute miles and a few at 1,600 ft, and scattered at 20,000 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 CYHI 170000Z 17007KT 15SM FEW016 SCT200 04/01 A2978 RMK SC1CI3 LAST STFD OBS/NXT 17/1400Z SLP089

CYHI · day 17 at 00:00 UTC · wind from 170° at 7 kt · visibility 10+ SM · a few clouds at 1,600 ft · scattered layer at 20,000 ft · temp 4°C / dewpoint 1°C · altimeter 29.78" Hg · sea-level pressure 1008.9 mb

// Runway analysis · computed from current METAR wind

Wind 170° @ 7 kt

1 USABLE · 1 AVOID · 1 CAUTION

WIND

170°7 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

24T★ HDG 240° H2 kt X7 kt LEFT PRIMARY · 4,300'

TAILWIND ENDS · AVOID 1 ends

06T HDG 060° T2 kt X7 kt RIGHT —

Pattern altitude: 1,117 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 -10°C

-1,000FT

-1,117 FT BELOW FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV117 FT OAT+4°C ISA DELTA-10°C PRESSURE ALT256 FT

// Performance equivalent Your aircraft will perform as if it's at a field -1,000 ft high on a standard ISA day — that's -1,117 ft above CYHI'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 · 2 reported · highest to lowest

// Reported layers (highest → lowest)

SCT200

Scattered · base 20,000 ft AGL · ~3–4 oktas

FEW016

Few · base 1,600 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER20,000 ft TOTAL COVERAGE~48% (mixed) FREEZING LEVEL2,137 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC-8)

13:07ZSUNRISE

19:47ZSOLAR NOON

02:27ZSUNSET

03:33ZCIVIL END

CURRENT01:14Z DAYLIGHT REMAINING1h 13m VFR NIGHT BEGINS03:33Z (2h 19m) DAY LENGTH13h 19m

Waxing Crescent

ILLUMINATION28% MOONRISE17:21Z MOONSET06:40Z FULL MOON IN10 days

// Nearest reporting stations

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

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