// Station · 14m ago

CYAH

La Grande-4 Airport

CAT IFR

WIND 200° / 6 kt

VIS 2.3 SM

CEILING OVC at 1,800 ft

T/Td 14°C / 13°C

ALTIM 29.54 inHg

WX -RA BR

ELEV 1,005 FT

53.7547°N / 73.6753°W

LOCATION · La Grande-4, CA

WIND

200°6 kt

CYAH · 1,005 FT

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

METRIC

NOW · 07Z

+6H

+12H

+18H

WIND

200°/6

VIS

2.3 SM

CEILING

OVC018

LAYERS

SCT010 OVC018

T / Td

14 / 13

ALTIM

29.54"

// Interpretation

IFR conditions — visibility 2.3 SM. Light winds at 200°/6 kt, visibility 2.3 SM, scattered at 1,000 ft, and overcast at 1,800 ft. Reported weather: light rain and mist (-RA 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 CYAH 170739Z AUTO 20006KT 2 1/4SM -RA BR SCT010 OVC018 14/13 A2954 RMK VIS VRB 1 3/4-3 SLP011 DENSITY ALT 1600FT

CYAH · day 17 at 07:39 UTC · wind from 200° at 6 kt · visibility 2.3 SM · scattered layer at 1,000 ft · overcast at 1,800 ft · temp 14°C / dewpoint 13°C · altimeter 29.54" Hg · weather: light rain and mist (-RA BR) · sea-level pressure 1001.1 mb

// Runway analysis · computed from current METAR wind

Wind 200° @ 6 kt

1 USABLE · 1 AVOID · 1 CAUTION

WIND

200°6 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

27★ HDG 270° H2 kt X6 kt LEFT PRIMARY · 5,000'

TAILWIND ENDS · AVOID 1 ends

09 HDG 090° T2 kt X6 kt RIGHT —

Pattern altitude: 2,005 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

1,600FT

+595 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV1,005 FT OAT+14°C ISA DELTA+2°C PRESSURE ALT1,383 FT

// Performance equivalent Operating here right now feels like operating at CYKL (Schefferville Airport, Schefferville, elev 1,709 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+16%

-11%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+11%

-7%

Light jetCJ4, Phenom 300, M2

+6%

-5%

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)

OVC018

Overcast · base 1,800 ft AGL · 8 oktas

SCT010

Scattered · base 1,000 ft AGL · ~3–4 oktas

// Computed

CEILING1,800 ft AGL HIGHEST LAYER1,800 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL8,076 ft VFR MARGIN-1,200 ft

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

09:38ZSUNRISE

17:00ZSOLAR NOON

00:22ZSUNSET

01:02ZCIVIL END

CURRENT07:53Z DAYLIGHT REMAINING16h 28m VFR NIGHT BEGINS01:02Z (17h 08m) DAY LENGTH14h 44m

Waxing Crescent

ILLUMINATION17% MOONRISE12:53Z MOONSET03:37Z FULL MOON IN11 days

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

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