// Station · 36m ago

KNUC

San Clemente Island Naval Auxiliary Landing Field

CAT VFR

WIND 290° / 8 kt

VIS 10+ SM

CEILING OVC at 6,000 ft

T/Td 17.8°C / 9.4°C

ALTIM 29.97 inHg

ELEV 184 FT

33.0227°N / 118.5880°W

LOCATION · San Clemente Island, US

WIND

290°8 kt

KNUC · 184 FT

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

METRIC

NOW · 05Z

+6H

+12H

+18H

WIND

290°/8

VIS

10+ SM

CEILING

OVC060

LAYERS

FEW040 OVC060

T / Td

18 / 9

ALTIM

29.97"

// Interpretation

VFR — ceiling 6,000 ft. Moderate winds at 290°/8 kt, visibility better than 10 statute miles, a few at 4,000 ft, and overcast at 6,000 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 KNUC 130556Z AUTO 29008KT 10SM FEW040 OVC060 18/09 A2997 RMK AO2 SLP147 6//// T01780094 10178 20167 53010 pN)H

KNUC · day 13 at 05:56 UTC · wind from 290° at 8 kt · visibility 10+ SM · a few clouds at 4,000 ft · overcast at 6,000 ft · temp 18°C / dewpoint 9°C · altimeter 29.97" Hg · automated station w/ precipitation discriminator · sea-level pressure 1014.7 mb

// Runway analysis · computed from current METAR wind

Wind 290° @ 8 kt

1 USABLE · 1 AVOID · 1 CAUTION

WIND

290°8 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

24★ HDG 240° H5 kt X6 kt RIGHT PRIMARY · 9,301'

TAILWIND ENDS · AVOID 1 ends

06 HDG 060° T5 kt X6 kt LEFT —

Pattern altitude: 1,184 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 +3°C

500FT

+316 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV184 FT OAT+18°C ISA DELTA+3°C PRESSURE ALT131 FT

// Performance equivalent Operating here right now feels like operating at KRDD (Redding Municipal Airport, Redding, elev 505 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+5%

-4%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+4%

-2%

Light jetCJ4, Phenom 300, M2

+2%

-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 · 2 reported · highest to lowest

// Reported layers (highest → lowest)

OVC060

Overcast · base 6,000 ft AGL · 8 oktas

FEW040

Few · base 4,000 ft AGL · ~1–2 oktas

// Computed

CEILING6,000 ft AGL HIGHEST LAYER6,000 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL9,174 ft VFR MARGIN+3,000 ft

// Sun & Moon · times in Z · bar = local day (UTC-8)

13:57ZSUNRISE

19:41ZSOLAR NOON

01:26ZSUNSET

01:51ZCIVIL END

CURRENT06:32Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS01:51Z (past) DAY LENGTH11h 28m

Waxing Crescent

ILLUMINATION4% MOONRISE15:29Z MOONSET02:58Z 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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