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// K0S9 · Jefferson County International Airport · Port Townsend

// Station · 10m ago

K0S9

Jefferson County International Airport
CAT VFR
WIND 300° / 6 kt G11
VIS 10+ SM
CEILING OVC at 3,600 ft
T/Td 16°C / 13°C
ALTIM 29.99 inHg
ELEV 108 FT
48.0538°N / 122.8110°W
LOCATION · Port Townsend, US
N
WIND
300°6 kt
K0S9 · 108 FT
© OSM · CartoDB

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

METRIC
NOW · 03Z
+6H
+12H
+18H
WIND
300°/6G11
 
 
 
VIS
10+ SM
 
 
 
CEILING
OVC036
 
 
 
LAYERS
OVC036
 
 
 
T / Td
16 / 13
 
 
 
ALTIM
29.99"
 
 
 

Loading TAF forecast…

// Interpretation

VFR — ceiling 3,600 ft. Light winds at 300°/6 kt, gusting 11, visibility better than 10 statute miles, overcast at 3,600 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 K0S9 290315Z AUTO 30006G11KT 10SM OVC036 16/13 A2999 RMK AO2

K0S9 · day 29 at 03:15 UTC · wind from 300° at 6 kt, gusts to 11 kt · visibility 10+ SM · overcast at 3,600 ft · temp 16°C / dewpoint 13°C · altimeter 29.99" Hg · automated station w/ precipitation discriminator

// Runway analysis · computed from current METAR wind

Wind 300° @ 6 ktG11
1 USABLE · 1 AVOID
N
WIND
300°6G11 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
HEADWIND ENDS 1 usable
27★ HDG 270° H5 kt X3 kt RIGHT PRIMARY · 3,000'
TAILWIND ENDS · AVOID 1 ends
09 HDG 090° T5 kt X3 kt LEFT —
Pattern altitude: 1,108 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 +1°C

200FT
+92 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS loading…
FIELD ELEV108 FT OAT+16°C ISA DELTA+1°C PRESSURE ALT34 FT
// Performance equivalent Operating here right now feels like operating at 2WA3 (Stuart Island West Airport, Friday Harbor, elev 200 ft) on a standard ISA day.
// Aircraft performance impact ENHANCED
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+2%
-1%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+1%
-1%
Light jetCJ4, Phenom 300, M2
+1%
-1%

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 · 8,189 FT OVC036 · CEILING K0S9 ELEV · 108 FT
// Reported layers (highest → lowest)
OVC036
Overcast · base 3,600 ft AGL · 8 oktas
// Computed
CEILING3,600 ft AGL HIGHEST LAYER3,600 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL8,189 ft VFR MARGIN+600 ft

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

13:25ZSUNRISE
20:13ZSOLAR NOON
03:02ZSUNSET
03:35ZCIVIL END
CURRENT03:25Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS03:35Z (10m) DAY LENGTH13h 37m
Waning Gibbous
ILLUMINATION99% MOONRISE02:16Z MOONSET15:54Z FULL MOON IN28 days

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

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