// Station · 16m ago

EFHK

Helsinki Vantaa Airport

CAT VFR

WIND 310° / 4 kt

VIS 6+ SM

CEILING CLR

T/Td 9°C / 9°C

ALTIM 29.53 inHg

ELEV 179 FT

60.3184°N / 24.9633°E

LOCATION · Helsinki (Vantaa), FI

WIND

310°4 kt

EFHK · 179 FT

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

METRIC

NOW · 22Z

+6H

+12H

+18H

WIND

310°/4

VIS

6+ SM

CEILING

CLR

LAYERS

—

T / Td

9 / 9

ALTIM

29.53"

// Interpretation

VFR with light winds at 310°/4 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 182250Z 31004KT CAVOK 09/09 Q1000 NOSIG

EFHK · day 18 at 22:50 UTC · wind from 310° at 4 kt · visibility 6+ SM · temp 9°C / dewpoint 9°C · altimeter 29.53" Hg

// Runway analysis · computed from current METAR wind

Wind 310° @ 4 kt

ALL USABLE · WINDS CALM

WIND

310°4 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 6 ends

04R HDG 040° —CALM —— 11,286'

22L HDG 220° —CALM —— 11,286'

04L HDG 040° —CALM —— 10,039'

22R HDG 220° —CALM —— 10,039'

15 HDG 150° —CALM —— 9,518'

33 HDG 330° —CALM —— 9,518'

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 -5°C

-0FT

-179 FT BELOW FIELD ELEV

// DA · LAST 24 HOURS ↘ -300 FT

24h AGO18h12h6hNOW

FIELD ELEV179 FT OAT+9°C ISA DELTA-5°C PRESSURE ALT569 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 LEVEL4,724 ft VFR MARGINunlimited

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

02:43ZSUNRISE

10:25ZSOLAR NOON

18:07ZSUNSET

18:57ZCIVIL END

CURRENT23:06Z DAYLIGHT REMAINING19h 00m VFR NIGHT BEGINS18:57Z (19h 51m) DAY LENGTH15h 23m

Waxing Crescent

ILLUMINATION32% MOONRISE07:18Z MOONSET22:42Z FULL MOON IN9 days

// Nearest reporting stations

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

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