// Station · 15h 43m ago · STALE · HARD STALE

CZEM

Eastmain River Airport

CAT VFR

WIND 330° / 12 kt G18

VIS 10+ SM

CEILING Few/scattered only

T/Td 17°C / 13°C

ALTIM 29.77 inHg

ELEV 24 FT

52.2264°N / 78.5225°W

LOCATION · Eastmain River, CA

WIND

330°12 kt

CZEM · 24 FT

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

METRIC

NOW · 20Z

+6H

+12H

+18H

WIND

330°/12G18

VIS

10+ SM

CEILING

—

LAYERS

FEW035 FEW110

T / Td

17 / 13

ALTIM

29.77"

// Interpretation

VFR with moderate winds at 330°/12 kt, gusting 18. Visibility better than 10 statute miles and a few at 3,500 ft, and a few at 11,000 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 CZEM 122000Z 33012G18KT 15SM FEW035TCU FEW110 17/13 A2977 RMK TCU1AC1 AC TR LAST STFD OBS/NEXT 131300 UTC SLP083 DENSITY ALT 400FT

CZEM · day 12 at 20:00 UTC · wind from 330° at 12 kt, gusts to 18 kt · visibility 10+ SM · a few clouds at 3,500 ft · a few clouds at 11,000 ft · temp 17°C / dewpoint 13°C · altimeter 29.77" Hg · sea-level pressure 1008.3 mb

// Runway analysis · computed from current METAR wind

Wind 330° @ 12 ktG18

1 USABLE · 1 AVOID

WIND

330°12G18 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

02★ HDG 020° H8 kt X9 kt LEFT PRIMARY · 3,512'

TAILWIND ENDS · AVOID 1 ends

20 HDG 200° T8 kt X9 kt RIGHT —

Pattern altitude: 1,024 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 +2°C

500FT

+476 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↗ +400 FT

24h AGO18h12h6hNOW

FIELD ELEV24 FT OAT+17°C ISA DELTA+2°C PRESSURE ALT172 FT

// Performance equivalent Operating here right now feels like operating at CYKG (Kangiqsujuaq (Wakeham Bay) Airport, Kangiqsujuaq, elev 501 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+5%

-4%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+4%

-2%

Light jetCJ4, Phenom 300, M2

+2%

-2%

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)

FEW110

Few · base 11,000 ft AGL · ~1–2 oktas

FEW035

Few · base 3,500 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER11,000 ft TOTAL COVERAGE~23% (sparse) FREEZING LEVEL8,610 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC-5)

09:55ZSUNRISE

17:20ZSOLAR NOON

00:45ZSUNSET

01:23ZCIVIL END

CURRENT11:43Z DAYLIGHT REMAINING13h 01m VFR NIGHT BEGINS01:23Z (13h 40m) DAY LENGTH14h 49m

New Moon

ILLUMINATION0% MOONRISE10:03Z MOONSET00:53Z FULL MOON IN15 days

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

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