// Station · 17m ago

CYAH

La Grande-4 Airport

CAT VFR

WIND VRB / 5 kt

VIS 9.0 SM

CEILING Few/scattered only

T/Td 21°C / 7°C

ALTIM 30.09 inHg

ELEV 1,005 FT

53.7547°N / 73.6753°W

LOCATION · La Grande-4, CA

WIND

VRB5 kt

CYAH · 1,005 FT

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

METRIC

NOW · 16Z

+6H

+12H

+18H

WIND

VRB/5

VIS

9.0 SM

CEILING

—

LAYERS

FEW050

T / Td

21 / 7

ALTIM

30.09"

// Interpretation

VFR with light winds at variable/5 kt. Visibility 9.0 SM and a few at 5,000 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 CYAH 111600Z AUTO VRB05KT 9SM FEW050 21/07 A3009 RMK SLP198 DENSITY ALT 1800FT

CYAH · day 11 at 16:00 UTC · wind variable at 5 kt · visibility 9.0 SM · a few clouds at 5,000 ft · temp 21°C / dewpoint 7°C · altimeter 30.09" Hg · sea-level pressure 1019.8 mb

// Runway analysis · computed from current METAR wind

Wind VRB @ 5 kt

ALL USABLE · WINDS CALM

WIND

VRB5 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 2 ends

09 HDG 090° —CALM —— 5,000'

27 HDG 270° —CALM —— 5,000'

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 +8°C

1,800FT

+795 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↗ +900 FT

24h AGO18h12h6hNOW

FIELD ELEV1,005 FT OAT+21°C ISA DELTA+8°C PRESSURE ALT834 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

+18%

-13%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+13%

-8%

Light jetCJ4, Phenom 300, M2

+7%

-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.

// Cloud layers · 1 reported · highest to lowest

// Reported layers (highest → lowest)

FEW050

Few · base 5,000 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER5,000 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL11,611 ft VFR MARGINunlimited

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

08:39ZSUNRISE

17:01ZSOLAR NOON

01:23ZSUNSET

02:13ZCIVIL END

CURRENT16:17Z DAYLIGHT REMAINING9h 06m VFR NIGHT BEGINS02:13Z (9h 56m) DAY LENGTH16h 43m

Waning Crescent

ILLUMINATION11% MOONRISE06:07Z MOONSET22:51Z FULL MOON IN18 days

// Nearest reporting stations

No nearby reporting stations found within 200 NM of CYAH.

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

AIRSPACE

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