// Station · 11m ago

CYMH

Mary's Harbour Airport

CAT IFR

WIND 320° / 10 kt G15

VIS 6.0 SM

CEILING BKN at 900 ft

T/Td 10°C / 9°C

ALTIM 29.59 inHg

WX BR

ELEV 38 FT

52.3028°N / 55.8474°W

LOCATION · Mary's Harbour, CA

WIND

320°10 kt

CYMH · 38 FT

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

METRIC

NOW · 12Z

+6H

+12H

+18H

WIND

320°/10G15

VIS

6.0 SM

CEILING

BKN009

LAYERS

BKN009 BKN014 OVC023

T / Td

10 / 9

ALTIM

29.59"

// Interpretation

IFR conditions — ceiling 900 ft. Moderate winds at 320°/10 kt, gusting 15, visibility 6.0 SM, broken at 900 ft, broken at 1,400 ft, and overcast at 2,300 ft. Reported weather: mist (BR). Mist is water droplets thinning visibility to between 5/8 and 6 SM — the moist, lighter cousin of fog. Would deteriorate to LIFR below 500 ft ceiling or 1 SM, or improve to MVFR above 1,000 ft and 3 SM.

Loading TAF forecast narrative…

SOURCES · NOAA Aviation Weather Center METAR (TAF loading…)

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// Raw observation METAR string + decoded

SPECI CYMH 131241Z AUTO 32010G15KT 6SM BR BKN009 BKN014 OVC023 10/09 A2959 RMK SLP023

CYMH · day 13 at 12:41 UTC · wind from 320° at 10 kt, gusts to 15 kt · visibility 6.0 SM · broken layer at 900 ft · broken layer at 1,400 ft · overcast at 2,300 ft · temp 10°C / dewpoint 9°C · altimeter 29.59" Hg · weather: mist (BR) · sea-level pressure 1002.3 mb

// Runway analysis · computed from current METAR wind

Wind 320° @ 10 ktG15

1 USABLE · 1 AVOID

WIND

320°10G15 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

29★ HDG 290° H9 kt X5 kt RIGHT PRIMARY · 2,500'

TAILWIND ENDS · AVOID 1 ends

11 HDG 110° T9 kt X5 kt LEFT —

Pattern altitude: 1,038 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 -4°C

-100FT

-138 FT BELOW FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV38 FT OAT+10°C ISA DELTA-4°C PRESSURE ALT366 FT

// Performance equivalent Operating here right now feels like operating at CYDP (Nain Airport, Nain, elev 22 ft) on a standard ISA day.

// 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 · 3 reported · highest to lowest

// Reported layers (highest → lowest)

OVC023

Overcast · base 2,300 ft AGL · 8 oktas

BKN014

Broken · base 1,400 ft AGL · ~5–7 oktas

BKN009

Broken · base 900 ft AGL · ~5–7 oktas

// Computed

CEILING900 ft AGL HIGHEST LAYER2,300 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL5,089 ft VFR MARGIN-2,100 ft

// Sun & Moon · times in Z · bar = local day (UTC-4)

08:24ZSUNRISE

15:49ZSOLAR NOON

23:14ZSUNSET

23:53ZCIVIL END

CURRENT12:52Z DAYLIGHT REMAINING10h 21m VFR NIGHT BEGINS23:53Z (11h 00m) DAY LENGTH14h 50m

New Moon

ILLUMINATION0% MOONRISE08:34Z MOONSET23:25Z FULL MOON IN15 days

// Nearest reporting stations

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

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