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// Station · 19m ago

KNUC

San Clemente Island Naval Auxiliary Landing Field
CAT VFR
WIND 270° / 13 kt
VIS 7.0 SM
CEILING Few/scattered only
T/Td 24.4°C / 20°C
ALTIM 29.93 inHg
ELEV 184 FT
33.0227°N / 118.5880°W
LOCATION · San Clemente Island, US
N
WIND
270°13 kt
KNUC · 184 FT
© OSM · CartoDB

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

METRIC
NOW · 00Z
+6H
+12H
+18H
WIND
270°/13
 
 
 
VIS
7.0 SM
 
 
 
CEILING
 
 
 
LAYERS
FEW008
 
 
 
T / Td
24 / 20
 
 
 
ALTIM
29.93"
 
 
 

// Interpretation

VFR with brisk winds at 270°/13 kt. Visibility 7.0 SM and a few at 800 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 150056Z 27013KT 7SM FEW008 24/20 A2993 RMK SLPNO LAST T02440200

KNUC · day 15 at 00:56 UTC · wind from 270° at 13 kt · visibility 7.0 SM · a few clouds at 800 ft · temp 24°C / dewpoint 20°C · altimeter 29.93" Hg

// Runway analysis · computed from current METAR wind

Wind 270° @ 13 kt
1 USABLE · 1 AVOID
N
WIND
270°13 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
HEADWIND ENDS 1 usable
24 HDG 240° H11 kt X6 kt RIGHT PRIMARY · 9,301'
TAILWIND ENDS · AVOID 1 ends
06 HDG 060° T11 kt X7 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 +10°C

1,300FT
+1,116 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↗ +700 FT
1,500 950 400
24h AGO18h12h6hNOW
FIELD ELEV184 FT OAT+24°C ISA DELTA+10°C PRESSURE ALT172 FT
// Performance equivalent Operating here right now feels like operating at KO61 (Cameron Airpark, Cameron Park, elev 1,286 ft) on a standard ISA day.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+13%
-9%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+9%
-6%
Light jetCJ4, Phenom 300, M2
+5%
-4%

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 · 12,507 FT FEW008 KNUC ELEV · 184 FT
// Reported layers (highest → lowest)
FEW008
Few · base 800 ft AGL · ~1–2 oktas
// Computed
CEILING HIGHEST LAYER800 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL12,507 ft VFR MARGINunlimited

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

12:57ZSUNRISE
20:01ZSOLAR NOON
03:05ZSUNSET
03:33ZCIVIL END
CURRENT01:15Z DAYLIGHT REMAINING1h 49m VFR NIGHT BEGINS03:33Z (2h 17m) DAY LENGTH14h 08m
New Moon
ILLUMINATION0% MOONRISE13:09Z MOONSET03:18Z FULL MOON IN15 days

// Nearest reporting stations · 5 shown · 60 NM radius

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

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