// Station · 13m ago

EFMA

Mariehamn Airport

CAT MVFR

WIND VRB / 4 kt

VIS 6+ SM

CEILING OVC at 1,900 ft

T/Td 8°C / 3°C

ALTIM 30.21 inHg

ELEV 17 FT

60.1222°N / 19.8982°E

LOCATION · Mariehamn, FI

WIND

VRB4 kt

EFMA · 17 FT

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

METRIC

NOW · 10Z

+6H

+12H

+18H

WIND

VRB/4

VIS

6+ SM

CEILING

OVC019

LAYERS

OVC019

T / Td

8 / 3

ALTIM

30.21"

// Interpretation

MVFR — ceiling 1,900 ft. Light winds at variable/4 kt, visibility 6+ SM, overcast at 1,900 ft. Would drop to IFR below 1,000 ft ceiling or 3 SM visibility, or rise back to VFR above 3,000 ft and 5 SM.

Loading TAF forecast narrative…

SOURCES · NOAA Aviation Weather Center METAR (TAF loading…)

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// Raw observation METAR string + decoded

METAR EFMA 131020Z AUTO VRB04KT 9999 OVC019 08/03 Q1023

EFMA · day 13 at 10:20 UTC · wind variable at 4 kt · visibility 6+ SM · overcast at 1,900 ft · temp 8°C / dewpoint 3°C · altimeter 30.21" Hg

// Runway analysis · computed from current METAR wind

Wind VRB @ 4 kt

ALL USABLE · WINDS CALM

WIND

VRB4 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 2 ends

03 HDG 030° —CALM —— 6,243'

21 HDG 210° —CALM —— 6,243'

Pattern altitude: 1,017 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

-1,200FT

-1,217 FT BELOW FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV17 FT OAT+8°C ISA DELTA-8°C PRESSURE ALT-272 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 -1,217 ft above EFMA'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)

OVC019

Overcast · base 1,900 ft AGL · 8 oktas

// Computed

CEILING1,900 ft AGL HIGHEST LAYER1,900 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL4,057 ft VFR MARGIN-1,100 ft

// Sun & Moon · times in Z · bar = local day (UTC+1)

05:15ZSUNRISE

10:27ZSOLAR NOON

15:40ZSUNSET

16:22ZCIVIL END

CURRENT10:33Z DAYLIGHT REMAINING5h 07m VFR NIGHT BEGINS16:22Z (5h 49m) DAY LENGTH10h 25m

Waxing Crescent

ILLUMINATION5% MOONRISE06:55Z MOONSET17:20Z 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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