// Station · 12m ago

KS39

Prineville Airport

CAT VFR

WIND 010° / 7 kt

VIS 10+ SM

CEILING OVC at 11,000 ft

T/Td 11°C / -6°C

ALTIM 30.01 inHg

ELEV 3,250 FT

44.2870°N / 120.9040°W

LOCATION · Prineville, US

WIND

010°7 kt

KS39 · 3,250 FT

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

METRIC

NOW · 00Z

+6H

+12H

+18H

WIND

010°/7

VIS

10+ SM

CEILING

OVC110

LAYERS

FEW090 OVC110

T / Td

11 / -6

ALTIM

30.01"

// Interpretation

VFR — ceiling 11,000 ft. Light winds at 010°/7 kt, visibility better than 10 statute miles, a few at 9,000 ft, and overcast at 11,000 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 KS39 130055Z AUTO 01007KT 10SM FEW090 OVC110 11/M06 A3001 RMK AO2

KS39 · day 13 at 00:55 UTC · wind from 010° at 7 kt · visibility 10+ SM · a few clouds at 9,000 ft · overcast at 11,000 ft · temp 11°C / dewpoint -6°C · altimeter 30.01" Hg · automated station w/ precipitation discriminator

// Runway analysis · computed from current METAR wind

Wind 010° @ 7 kt

2 USABLE · 2 AVOID · 1 CAUTION

WIND

010°7 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 2 usable

33★ HDG 330° H5 kt X4 kt RIGHT PRIMARY · 4,031'

29 HDG 290° H1 kt X7 kt RIGHT ⚠ HIGH XW · 100%

TAILWIND ENDS · AVOID 2 ends

11 HDG 110° T1 kt X7 kt LEFT —

15 HDG 150° T5 kt X4 kt LEFT —

Pattern altitude: 4,250 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 +2°C

3,400FT

+150 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV3,250 FT OAT+11°C ISA DELTA+2°C PRESSURE ALT3,159 FT

// Performance equivalent Operating here right now feels like operating at KBKE (Baker City Municipal Airport, Baker City, elev 3,373 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+34%

-24%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+24%

-15%

Light jetCJ4, Phenom 300, M2

+14%

-10%

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)

OVC110

Overcast · base 11,000 ft AGL · 8 oktas

FEW090

Few · base 9,000 ft AGL · ~1–2 oktas

// Computed

CEILING11,000 ft AGL HIGHEST LAYER11,000 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL8,806 ft VFR MARGIN+8,000 ft

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

14:15ZSUNRISE

19:51ZSOLAR NOON

01:26ZSUNSET

01:55ZCIVIL END

CURRENT01:07Z DAYLIGHT REMAINING19m VFR NIGHT BEGINS01:55Z (48m) DAY LENGTH11h 10m

Waxing Crescent

ILLUMINATION3% MOONRISE15:36Z MOONSET02:47Z FULL MOON IN13 days

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

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