// Station · 11m ago

EFHA

Halli Airport

CAT VFR

WIND 330° / 3 kt

VIS 6+ SM

CEILING Few/scattered only

T/Td 19°C / 11°C

ALTIM 30.09 inHg

ELEV 479 FT

61.8560°N / 24.7867°E

LOCATION · Jämsä, FI

WIND

330°3 kt

EFHA · 479 FT

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

METRIC

NOW · 16Z

+6H

+12H

+18H

WIND

330°/3

VIS

6+ SM

CEILING

—

LAYERS

SCT044

T / Td

19 / 11

ALTIM

30.09"

// Interpretation

VFR with light winds at 330°/3 kt. Visibility 6+ SM and scattered at 4,400 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 EFHA 251650Z AUTO 33003KT 9999 SCT044 19/11 Q1019

EFHA · day 25 at 16:50 UTC · wind from 330° at 3 kt · visibility 6+ SM · scattered layer at 4,400 ft · temp 19°C / dewpoint 11°C · altimeter 30.09" Hg

// Runway analysis · computed from current METAR wind

Wind 330° @ 3 kt

ALL USABLE · WINDS CALM

WIND

330°3 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 2 ends

08 HDG 080° —CALM —— 8,533'

26 HDG 260° —CALM —— 8,533'

Pattern altitude: 1,479 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 +5°C

900FT

+421 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV479 FT OAT+19°C ISA DELTA+5°C PRESSURE ALT308 FT

// Performance equivalent Operating here right now feels like operating at EFJY (Jyväskylä Airport, Jyväskylän Maalaiskunta, elev 459 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+9%

-6%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+6%

-4%

Light jetCJ4, Phenom 300, M2

+4%

-3%

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 · 1 reported · highest to lowest

// Reported layers (highest → lowest)

SCT044

Scattered · base 4,400 ft AGL · ~3–4 oktas

// Computed

CEILING— HIGHEST LAYER4,400 ft TOTAL COVERAGE~40% (mixed) FREEZING LEVEL10,075 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC+2)

02:52ZSUNRISE

10:24ZSOLAR NOON

17:56ZSUNSET

18:47ZCIVIL END

CURRENT17:01Z DAYLIGHT REMAINING54m VFR NIGHT BEGINS18:47Z (1h 45m) DAY LENGTH15h 03m

Waxing Gibbous

ILLUMINATION94% MOONRISE12:56Z MOONSET04:00Z FULL MOON IN2 days

// Nearest reporting stations

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

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