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// Station · 1m ago

EFMA

Mariehamn Airport
CAT VFR
WIND 330° / 21 kt G31
VIS 6+ SM
CEILING Few/scattered only
T/Td 13°C / 3°C
ALTIM 29.85 inHg
ELEV 17 FT
60.1222°N / 19.8982°E
LOCATION · Mariehamn, FI
N
WIND
330°21 kt
EFMA · 17 FT
© OSM · CartoDB

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

METRIC
NOW · 10Z
+6H
+12H
+18H
WIND
330°/21G31
 
 
 
VIS
6+ SM
 
 
 
CEILING
 
 
 
LAYERS
FEW040
 
 
 
T / Td
13 / 3
 
 
 
ALTIM
29.85"
 
 
 

// Interpretation

VFR with strong winds at 330°/21 kt, gusting 31. Visibility 6+ SM and a few at 4,000 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 EFMA 271050Z AUTO 33021G31KT 280V010 9999 FEW040 13/03 Q1011

EFMA · day 27 at 10:50 UTC · wind from 330° at 21 kt, gusts to 31 kt · visibility 6+ SM · a few clouds at 4,000 ft · temp 13°C / dewpoint 3°C · altimeter 29.85" Hg

// Runway analysis · computed from current METAR wind

Wind 330° @ 21 ktG31
1 USABLE · 1 AVOID · 1 CAUTION
N
WIND
330°21G31 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
HEADWIND ENDS 1 usable
03 HDG 030° H11 kt X18 kt LEFT PRIMARY · 6,243'
TAILWIND ENDS · AVOID 1 ends
21 HDG 210° T10 kt X18 kt RIGHT
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 -2°C

-100FT
-117 FT BELOW FIELD ELEV
// DA · LAST 24 HOURS ↘ -200 FT
200 -200 -600
24h AGO18h12h6hNOW
FIELD ELEV17 FT OAT+13°C ISA DELTA-2°C PRESSURE ALT82 FT
// Performance equivalent Operating here right now feels like operating at EFPO (Pori Airport, Pori, elev 44 ft) on a standard ISA day.
// Aircraft performance impact MINOR
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.

// Cloud layers · 1 reported · highest to lowest

FT 0 5k 10k 15k 20k 25k FRZ LVL · 6,583 FT FEW040 EFMA ELEV · 17 FT
// Reported layers (highest → lowest)
FEW040
Few · base 4,000 ft AGL · ~1–2 oktas
// Computed
CEILING HIGHEST LAYER4,000 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL6,583 ft VFR MARGINunlimited

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

01:38ZSUNRISE
10:38ZSOLAR NOON
19:39ZSUNSET
20:56ZCIVIL END
CURRENT10:51Z DAYLIGHT REMAINING8h 48m VFR NIGHT BEGINS20:56Z (10h 05m) DAY LENGTH18h 00m
Waxing Gibbous
ILLUMINATION83% MOONRISE10:21Z MOONSET04:22Z FULL MOON IN4 days

// Nearest reporting stations · 4 shown · 100 NM (sparse area)

// Area map · 100 NM radius · CartoDB Dark Matter + aeronautical overlay

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