// Station · 8m ago

EHKD

De Kooy Airfield / Den Helder Naval Air Station

CAT VFR

WIND 070° / 9 kt

VIS 6+ SM

CEILING CLR

T/Td 22°C / 13°C

ALTIM 29.94 inHg

ELEV 3 FT

52.9234°N / 4.7806°E

LOCATION · Den Helder, NL

WIND

070°9 kt

EHKD · 3 FT

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

METRIC

NOW · 16Z

+6H

+12H

+18H

WIND

070°/9

VIS

6+ SM

CEILING

CLR

LAYERS

—

T / Td

22 / 13

ALTIM

29.94"

// Interpretation

VFR with moderate winds at 070°/9 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 EHKD 251655Z AUTO 07009KT 9999 NCD 22/13 Q1014 BLU NOSIG

EHKD · day 25 at 16:55 UTC · wind from 070° at 9 kt · visibility 6+ SM · temp 22°C / dewpoint 13°C · altimeter 29.94" Hg

// Runway analysis · computed from current METAR wind

Wind 070° @ 9 kt

1 USABLE · 1 AVOID · 1 CAUTION

WIND

070°9 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

03★ HDG 030° H7 kt X6 kt RIGHT PRIMARY · 4,183'

TAILWIND ENDS · AVOID 1 ends

21 HDG 210° T7 kt X6 kt LEFT —

Pattern altitude: 1,003 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 +7°C

800FT

+797 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV3 FT OAT+22°C ISA DELTA+7°C PRESSURE ALT-20 FT

// Performance equivalent Operating here right now feels like operating at EHBK (Maastricht Aachen Airport, Maastricht, elev 375 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+8%

-6%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+6%

-4%

Light jetCJ4, Phenom 300, M2

+3%

-2%

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 LEVEL11,114 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC+0)

04:40ZSUNRISE

11:44ZSOLAR NOON

18:48ZSUNSET

19:26ZCIVIL END

CURRENT17:03Z DAYLIGHT REMAINING1h 45m VFR NIGHT BEGINS19:26Z (2h 22m) DAY LENGTH14h 08m

Waxing Gibbous

ILLUMINATION94% MOONRISE14:44Z MOONSET04:53Z 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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