// Station · 14m ago

EFHA

Halli Airport

CAT VFR

WIND VRB / 2 kt

VIS 6+ SM

CEILING Few/scattered only

T/Td 3°C / 0°C

ALTIM 30.21 inHg

ELEV 479 FT

61.8560°N / 24.7867°E

LOCATION · Jämsä, FI

WIND

VRB2 kt

EFHA · 479 FT

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

METRIC

NOW · 09Z

+6H

+12H

+18H

WIND

VRB/2

VIS

6+ SM

CEILING

—

LAYERS

SCT013

T / Td

3 / 0

ALTIM

30.21"

// Interpretation

VFR with light winds at variable/2 kt. Visibility 6+ SM and scattered at 1,300 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 130920Z VRB02KT 9999 SCT013 03/00 Q1023

EFHA · day 13 at 09:20 UTC · wind variable at 2 kt · visibility 6+ SM · scattered layer at 1,300 ft · temp 3°C / dewpoint 0°C · altimeter 30.21" Hg

// Runway analysis · computed from current METAR wind

Wind VRB @ 2 kt

ALL USABLE · WINDS CALM

WIND

VRB2 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 -12°C

-1,200FT

-1,679 FT BELOW FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV479 FT OAT+3°C ISA DELTA-12°C PRESSURE ALT190 FT

// Performance equivalent Your aircraft will perform as if it's at a field -1,200 ft high on a standard ISA day — that's -1,679 ft above EFHA's actual elevation.

// 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 · 1 reported · highest to lowest

// Reported layers (highest → lowest)

SCT013

Scattered · base 1,300 ft AGL · ~3–4 oktas

// Computed

CEILING— HIGHEST LAYER1,300 ft TOTAL COVERAGE~40% (mixed) FREEZING LEVEL1,994 ft VFR MARGINunlimited

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

04:59ZSUNRISE

10:08ZSOLAR NOON

15:17ZSUNSET

16:01ZCIVIL END

CURRENT09:34Z DAYLIGHT REMAINING5h 43m VFR NIGHT BEGINS16:01Z (6h 27m) DAY LENGTH10h 17m

Waxing Crescent

ILLUMINATION5% MOONRISE06:37Z MOONSET16:55Z FULL MOON IN13 days

// Nearest reporting stations

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

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