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// Station · 26m ago

CYDC

Princeton Airport
CAT VFR
WIND 280° / 7 kt
VIS 10+ SM
CEILING BKN at 5,000 ft
T/Td 14°C / 2°C
ALTIM 30.14 inHg
ELEV 2,298 FT
49.4681°N / 120.5110°W
LOCATION · Town of Princeton, CA
N
WIND
280°7 kt
CYDC · 2,298 FT
© OSM · CartoDB

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

METRIC
NOW · 19Z
+6H
+12H
+18H
WIND
280°/7
 
 
 
VIS
10+ SM
 
 
 
CEILING
BKN050
 
 
 
LAYERS
FEW043 BKN050 OVC054
 
 
 
T / Td
14 / 2
 
 
 
ALTIM
30.14"
 
 
 

// Interpretation

VFR — ceiling 5,000 ft. Light winds at 280°/7 kt, visibility better than 10 statute miles, a few at 4,300 ft, broken at 5,000 ft, and overcast at 5,400 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 CYDC 301900Z 28007KT 25SM FEW043 BKN050 OVC054 14/02 A3014 RMK CF1SC5SC3 CF TR SLP212

CYDC · day 30 at 19:00 UTC · wind from 280° at 7 kt · visibility 10+ SM · a few clouds at 4,300 ft · broken layer at 5,000 ft · overcast at 5,400 ft · temp 14°C / dewpoint 2°C · altimeter 30.14" Hg · sea-level pressure 1021.2 mb

// Runway analysis · computed from current METAR wind

Wind 280° @ 7 kt
1 USABLE · 1 AVOID · 1 CAUTION
N
WIND
280°7 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
HEADWIND ENDS 1 usable
22 HDG 220° H4 kt X6 kt RIGHT PRIMARY · 3,932'
TAILWIND ENDS · AVOID 1 ends
04 HDG 040° T4 kt X6 kt LEFT
Pattern altitude: 3,298 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

2,500FT
+202 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↘ -600 FT
3,400 2,200 1,000
24h AGO18h12h6hNOW
FIELD ELEV2,298 FT OAT+14°C ISA DELTA+3°C PRESSURE ALT2,077 FT
// Performance equivalent Operating here right now feels like operating at CAJ9 (Fort Ware Airport, Fort Ware, elev 2,450 ft) on a standard ISA day.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+25%
-18%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+18%
-11%
Light jetCJ4, Phenom 300, M2
+10%
-8%

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 · 3 reported · highest to lowest

FT 0 5k 10k 15k 20k 25k FRZ LVL · 9,369 FT FEW043 BKN050 · CEILING OVC054 CYDC ELEV · 2,298 FT
// Reported layers (highest → lowest)
OVC054
Overcast · base 5,400 ft AGL · 8 oktas
BKN050
Broken · base 5,000 ft AGL · ~5–7 oktas
FEW043
Few · base 4,300 ft AGL · ~1–2 oktas
// Computed
CEILING5,000 ft AGL HIGHEST LAYER5,400 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL9,369 ft VFR MARGIN+2,000 ft

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

12:03ZSUNRISE
20:01ZSOLAR NOON
03:58ZSUNSET
04:40ZCIVIL END
CURRENT19:26Z DAYLIGHT REMAINING8h 32m VFR NIGHT BEGINS04:40Z (9h 14m) DAY LENGTH15h 55m
Full Moon
ILLUMINATION99% MOONRISE23:29Z MOONSET15:25Z FULL MOON IN1 day

// Nearest reporting stations · 5 shown · 100 NM (sparse area)

// Area map · 80 NM radius · CartoDB Dark Matter + aeronautical overlay

© OpenStreetMap · CartoDB · OpenAIP
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