// Station · 23m ago

KAPC

Napa County Airport

CAT VFR

WIND 330° / 7 kt

VIS 10+ SM

CEILING CLR

T/Td 26.1°C / -5.6°C

ALTIM 30.03 inHg

ELEV 35 FT

38.2132°N / 122.2810°W

LOCATION · Napa, US

WIND

330°7 kt

KAPC · 35 FT

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

METRIC

NOW · 23Z

+6H

+12H

+18H

WIND

330°/7

VIS

10+ SM

CEILING

CLR

LAYERS

—

T / Td

26 / -6

ALTIM

30.03"

// Interpretation

VFR with light winds at 330°/7 kt. Visibility better than 10 statute miles and no reported cloud layers. 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 KAPC 132354Z 33007KT 10SM CLR 26/M06 A3003 RMK AO2 SLP159 T02611056 10267 20217 56007

KAPC · day 13 at 23:54 UTC · wind from 330° at 7 kt · visibility 10+ SM · temp 26°C / dewpoint -6°C · altimeter 30.03" Hg · automated station w/ precipitation discriminator · sea-level pressure 1015.9 mb

// Runway analysis · computed from current METAR wind

Wind 330° @ 7 kt

4 USABLE · 2 AVOID · 2 CAUTION

WIND

330°7 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 4 usable

01L★ HDG 010° H5 kt X4 kt LEFT PRIMARY · 5,930'

01R HDG 010° H5 kt X4 kt LEFT 2,510'

6 HDG 060° H0 kt X7 kt LEFT ⚠ HIGH XW · 100%

24 HDG 240° H0 kt X7 kt RIGHT ⚠ HIGH XW · 100%

TAILWIND ENDS · AVOID 2 ends

19R HDG 190° T5 kt X4 kt RIGHT —

19L HDG 190° T5 kt X4 kt RIGHT —

Pattern altitude: 1,035 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 +11°C

1,200FT

+1,165 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV35 FT OAT+26°C ISA DELTA+11°C PRESSURE ALT-77 FT

// Performance equivalent Operating here right now feels like operating at KSBD (San Bernardino International Airport, San Bernardino, elev 1,159 ft) on a standard ISA day.

// Aircraft performance impact MODERATE

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+12%

-8%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+8%

-5%

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. 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 · clear · no layers reported

// Reported layers (highest → lowest)

CLR

No reported cloud layers — clear sky from surface to reporting ceiling.

// Computed

CEILING— HIGHEST LAYER— TOTAL COVERAGEclear FREEZING LEVEL13,217 ft VFR MARGINunlimited

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

14:17ZSUNRISE

19:56ZSOLAR NOON

01:35ZSUNSET

02:02ZCIVIL END

CURRENT00:17Z DAYLIGHT REMAINING1h 18m VFR NIGHT BEGINS02:02Z (1h 45m) DAY LENGTH11h 18m

Waxing Crescent

ILLUMINATION8% MOONRISE16:25Z MOONSET03:43Z FULL MOON IN12 days

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

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