// Station · 22m ago

CYMH

Mary's Harbour Airport

CAT VFR

WIND 050° / 6 kt

VIS 9.0 SM

CEILING Few/scattered only

T/Td 15°C / 10°C

ALTIM 29.82 inHg

ELEV 38 FT

52.3028°N / 55.8474°W

LOCATION · Mary's Harbour, CA

WIND

050°6 kt

CYMH · 38 FT

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

METRIC

NOW · 17Z

+6H

+12H

+18H

WIND

050°/6

VIS

9.0 SM

CEILING

—

LAYERS

FEW140

T / Td

15 / 10

ALTIM

29.82"

// Interpretation

VFR with light winds at 050°/6 kt. Visibility 9.0 SM and a few at 14,000 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 CYMH 111700Z AUTO 05006KT 020V090 9SM FEW140 15/10 A2982 RMK SLP100

CYMH · day 11 at 17:00 UTC · wind from 050° at 6 kt · visibility 9.0 SM · a few clouds at 14,000 ft · temp 15°C / dewpoint 10°C · altimeter 29.82" Hg · sea-level pressure 1010.0 mb

// Runway analysis · computed from current METAR wind

Wind 050° @ 6 kt

1 USABLE · 1 AVOID

WIND

050°6 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

11★ HDG 110° H3 kt X5 kt LEFT PRIMARY · 2,500'

TAILWIND ENDS · AVOID 1 ends

29 HDG 290° T3 kt X5 kt RIGHT —

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 +0°C

200FT

+162 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↘ -1,100 FT

24h AGO18h12h6hNOW

FIELD ELEV38 FT OAT+15°C ISA DELTA+0°C PRESSURE ALT136 FT

// Performance equivalent Operating here right now feels like operating at CCD4 (Postville Airport, Postville, elev 193 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+2%

-1%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+1%

-1%

Light jetCJ4, Phenom 300, M2

+1%

-1%

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 · 1 reported · highest to lowest

// Reported layers (highest → lowest)

FEW140

Few · base 14,000 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER14,000 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL7,614 ft VFR MARGINunlimited

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

07:36ZSUNRISE

15:49ZSOLAR NOON

00:03ZSUNSET

00:50ZCIVIL END

CURRENT17:22Z DAYLIGHT REMAINING6h 41m VFR NIGHT BEGINS00:50Z (7h 28m) DAY LENGTH16h 27m

Waning Crescent

ILLUMINATION10% MOONRISE05:06Z MOONSET21:34Z FULL MOON IN18 days

// Nearest reporting stations · 1 shown · 60 NM radius

CYAY

VFR → MVFR 18Z

St. Anthony Airport · St. Anthony

WIND: 360° / 13 ktG20
VIS: 9.0 SM
CEILING: BKN034
DIST: 55 NM S
AGE: 22m ago

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

AIRSPACE

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