// Station · 29m ago

KTRK

Truckee Tahoe Airport

CAT VFR

WIND CALM

VIS 10+ SM

CEILING BKN at 20,000 ft

T/Td 14°C / 4°C

ALTIM 30.35 inHg

ELEV 5,900 FT

39.3186°N / 120.1406°W

LOCATION · Truckee, US

WIND

000°0 kt

KTRK · 5,900 FT

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

METRIC

NOW · 15Z

+6H

+12H

+18H

WIND

CALM

VIS

10+ SM

CEILING

BKN200

LAYERS

BKN200

T / Td

14 / 4

ALTIM

30.35"

// Interpretation

VFR — ceiling 20,000 ft. Winds calm, visibility better than 10 statute miles, broken at 20,000 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 KTRK 251550Z 00000KT 10SM BKN200 14/04 A3035

KTRK · day 25 at 15:50 UTC · winds calm · visibility 10+ SM · broken layer at 20,000 ft · temp 14°C / dewpoint 4°C · altimeter 30.35" Hg

// 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 4 ends

11 HDG 110° —CALM —— 7,001'

29 HDG 290° —CALM —— 7,001'

02 HDG 020° —CALM —— 4,650'

20 HDG 200° —CALM —— 4,650'

Pattern altitude: 6,900 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 +10°C

6,600FT

+700 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV5,900 FT OAT+14°C ISA DELTA+10°C PRESSURE ALT5,466 FT

// Performance equivalent Operating here right now feels like operating at KL35 (Big Bear City Airport, Big Bear, elev 6,752 ft) on a standard ISA day.

// Aircraft performance impact MODERATE

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+66%

-46%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+46%

-30%

Light jetCJ4, Phenom 300, M2

+26%

-20%

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

// Reported layers (highest → lowest)

BKN200

Broken · base 20,000 ft AGL · ~5–7 oktas

// Computed

CEILING20,000 ft AGL HIGHEST LAYER20,000 ft TOTAL COVERAGE~75% (mostly covered) FREEZING LEVEL12,971 ft VFR MARGIN+17,000 ft

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

13:24ZSUNRISE

20:04ZSOLAR NOON

02:44ZSUNSET

03:12ZCIVIL END

CURRENT16:19Z DAYLIGHT REMAINING10h 25m VFR NIGHT BEGINS03:12Z (10h 53m) DAY LENGTH13h 20m

Waxing Gibbous

ILLUMINATION94% MOONRISE23:26Z MOONSET12:46Z FULL MOON IN2 days

// Nearest reporting stations

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

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