// Station · 10m ago

K0S9

Jefferson County International Airport

CAT VFR

WIND CALM

VIS 10+ SM

CEILING OVC at 9,000 ft

T/Td 7°C / 5°C

ALTIM 30.07 inHg

ELEV 108 FT

48.0538°N / 122.8110°W

LOCATION · Port Townsend, US

WIND

000°0 kt

K0S9 · 108 FT

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

METRIC

NOW · 04Z

+6H

+12H

+18H

WIND

CALM

VIS

10+ SM

CEILING

OVC090

LAYERS

FEW075 OVC090

T / Td

7 / 5

ALTIM

30.07"

// Interpretation

VFR — ceiling 9,000 ft. Winds calm, visibility better than 10 statute miles, a few at 7,500 ft, and overcast at 9,000 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 K0S9 130415Z AUTO 00000KT 10SM FEW075 OVC090 07/05 A3007 RMK AO2

K0S9 · day 13 at 04:15 UTC · winds calm · visibility 10+ SM · a few clouds at 7,500 ft · overcast at 9,000 ft · temp 7°C / dewpoint 5°C · altimeter 30.07" Hg · automated station w/ precipitation discriminator

// Runway analysis · computed from current METAR wind

Wind CALM

ALL USABLE · WINDS CALM

WIND

000°calm

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 2 ends

09 HDG 090° —CALM —— 3,000'

27 HDG 270° —CALM —— 3,000'

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 -8°C

-1,000FT

-1,108 FT BELOW FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV108 FT OAT+7°C ISA DELTA-8°C PRESSURE ALT-45 FT

// Performance equivalent Your aircraft will perform as if it's at a field -1,000 ft high on a standard ISA day — that's -1,108 ft above K0S9's actual elevation.

// Aircraft performance impact ENHANCED

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+0%

-0%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+0%

-0%

Light jetCJ4, Phenom 300, M2

+0%

-0%

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)

OVC090

Overcast · base 9,000 ft AGL · 8 oktas

FEW075

Few · base 7,500 ft AGL · ~1–2 oktas

// Computed

CEILING9,000 ft AGL HIGHEST LAYER9,000 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL3,643 ft VFR MARGIN+6,000 ft

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

14:27ZSUNRISE

19:58ZSOLAR NOON

01:30ZSUNSET

02:01ZCIVIL END

CURRENT04:25Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS02:01Z (past) DAY LENGTH11h 03m

Waxing Crescent

ILLUMINATION4% MOONRISE15:55Z 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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