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// Station · 15m ago

CYWL

Williams Lake Airport
CAT VFR
WIND 120° / 10 kt G17
VIS 10+ SM
CEILING Few/scattered only
T/Td 24°C / 9°C
ALTIM 30.09 inHg
ELEV 3,085 FT
52.1831°N / 122.0540°W
LOCATION · Williams Lake, CA
N
WIND
120°10 kt
CYWL · 3,085 FT
© OSM · CartoDB

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

METRIC
NOW · 18Z
+6H
+12H
+18H
WIND
120°/10G17
 
 
 
VIS
10+ SM
 
 
 
CEILING
 
 
 
LAYERS
SCT230
 
 
 
T / Td
24 / 9
 
 
 
ALTIM
30.09"
 
 
 

// Interpretation

VFR with moderate winds at 120°/10 kt, gusting 17. Visibility better than 10 statute miles and scattered at 23,000 ft. Would shift to MVFR if the ceiling drops to 3,000 ft or visibility below 5 SM.

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SOURCES · NOAA Aviation Weather Center METAR (TAF loading…)

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// Raw observation METAR string + decoded

METAR CYWL 251800Z 12010G17KT 15SM SCT230 24/09 A3009 RMK CI4 SLP182 DENSITY ALT 4700FT

CYWL · day 25 at 18:00 UTC · wind from 120° at 10 kt, gusts to 17 kt · visibility 10+ SM · scattered layer at 23,000 ft · temp 24°C / dewpoint 9°C · altimeter 30.09" Hg · sea-level pressure 1018.2 mb

// Runway analysis · computed from current METAR wind

Wind 120° @ 10 ktG17
1 USABLE · 1 AVOID
N
WIND
120°10G17 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
HEADWIND ENDS 1 usable
12 HDG 120° H10 kt X0 kt PRIMARY · 7,000'
TAILWIND ENDS · AVOID 1 ends
30 HDG 300° T10 kt X0 kt
Pattern altitude: 4,085 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 +15°C

4,700FT
+1,615 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS loading…
FIELD ELEV3,085 FT OAT+24°C ISA DELTA+15°C PRESSURE ALT2,914 FT
// Performance equivalent Your aircraft will perform as if it's at a field 4,700 ft high on a standard ISA day — that's +1,615 ft above CYWL's actual elevation.
// Aircraft performance impact MODERATE
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+47%
-33%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+33%
-21%
Light jetCJ4, Phenom 300, M2
+19%
-14%

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 · 1 reported · highest to lowest

FT 0 5k 10k 15k 20k 25k FRZ LVL · 15,206 FT SCT230 CYWL ELEV · 3,085 FT
// Reported layers (highest → lowest)
SCT230
Scattered · base 23,000 ft AGL · ~3–4 oktas
// Computed
CEILING HIGHEST LAYER23,000 ft TOTAL COVERAGE~40% (mixed) FREEZING LEVEL15,206 ft VFR MARGINunlimited

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

13:09ZSUNRISE
20:11ZSOLAR NOON
03:13ZSUNSET
03:50ZCIVIL END
CURRENT18:15Z DAYLIGHT REMAINING8h 58m VFR NIGHT BEGINS03:50Z (9h 34m) DAY LENGTH14h 04m
Waxing Gibbous
ILLUMINATION94% MOONRISE23:16Z MOONSET13:20Z FULL MOON IN2 days

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