// Station · 25m ago

EFHK

Helsinki Vantaa Airport

CAT VFR

WIND 320° / 5 kt

VIS 6+ SM

CEILING CLR

T/Td 13°C / 11°C

ALTIM 30.12 inHg

ELEV 179 FT

60.3184°N / 24.9633°E

LOCATION · Helsinki (Vantaa), FI

WIND

320°5 kt

EFHK · 179 FT

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

METRIC

NOW · 17Z

+6H

+12H

+18H

WIND

320°/5

VIS

6+ SM

CEILING

CLR

LAYERS

—

T / Td

13 / 11

ALTIM

30.12"

// Interpretation

VFR with light winds at 320°/5 kt. Visibility 6+ SM and no reported cloud layers. 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 EFHK 251750Z 32005KT CAVOK 13/11 Q1020 NOSIG

EFHK · day 25 at 17:50 UTC · wind from 320° at 5 kt · visibility 6+ SM · temp 13°C / dewpoint 11°C · altimeter 30.12" Hg

// Runway analysis · computed from current METAR wind

Wind 320° @ 5 kt

3 USABLE · 3 AVOID

WIND

320°5 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 3 usable

33★ HDG 330° H5 kt X1 kt LEFT PRIMARY · 9,518'

04L HDG 040° H1 kt X5 kt LEFT 10,039'

04R HDG 040° H1 kt X5 kt LEFT 11,286'

TAILWIND ENDS · AVOID 3 ends

22R HDG 220° T1 kt X5 kt RIGHT —

22L HDG 220° T1 kt X5 kt RIGHT —

15 HDG 150° T5 kt X1 kt RIGHT —

Pattern altitude: 1,179 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

-300FT

-479 FT BELOW FIELD ELEV

// DA · LAST 24 HOURS ↘ -400 FT

24h AGO18h12h6hNOW

FIELD ELEV179 FT OAT+13°C ISA DELTA-2°C PRESSURE ALT-22 FT

// Performance equivalent Operating here right now feels like operating at EFPE (Peijaksen Hospital Heliport, Helsinki, elev 171 ft) on a standard ISA day.

// 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 · clear · no layers reported

// Reported layers (highest → lowest)

CLR

No reported cloud layers — clear sky from surface to reporting ceiling.

// Computed

CEILING— HIGHEST LAYER— TOTAL COVERAGEclear FREEZING LEVEL6,745 ft VFR MARGINunlimited

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

02:58ZSUNRISE

10:23ZSOLAR NOON

17:49ZSUNSET

18:37ZCIVIL END

CURRENT18:15Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS18:37Z (21m) DAY LENGTH14h 51m

Waxing Gibbous

ILLUMINATION94% MOONRISE13:04Z MOONSET03:56Z 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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