// Station · 33m ago

KTRI

Tri-Cities Regional TN/VA Airport

CAT VFR

WIND CALM

VIS 10+ SM

CEILING Few/scattered only

T/Td 27.8°C / 13.3°C

ALTIM 30.09 inHg

ELEV 1,519 FT

36.4752°N / 82.4074°W

LOCATION · Blountville, US

WIND

000°0 kt

KTRI · 1,519 FT

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

METRIC

NOW · 19Z

+6H

+12H

+18H

WIND

CALM

VIS

10+ SM

CEILING

—

LAYERS

FEW055 SCT250

T / Td

28 / 13

ALTIM

30.09"

// Interpretation

VFR with winds calm. Visibility better than 10 statute miles and a few at 5,500 ft, and scattered at 25,000 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 KTRI 251953Z 00000KT 10SM FEW055 SCT250 28/13 A3009 RMK AO2 SLP166 T02780133

KTRI · day 25 at 19:53 UTC · winds calm · visibility 10+ SM · a few clouds at 5,500 ft · scattered layer at 25,000 ft · temp 28°C / dewpoint 13°C · altimeter 30.09" Hg · automated station w/ precipitation discriminator · sea-level pressure 1016.6 mb

// 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

05 HDG 050° —CALM —— 8,000'

23 HDG 230° —CALM —— 8,000'

09 HDG 090° —CALM —— 4,443'

27 HDG 270° —CALM —— 4,443'

Pattern altitude: 2,519 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 +15°C

3,200FT

+1,681 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV1,519 FT OAT+28°C ISA DELTA+15°C PRESSURE ALT1,348 FT

// Performance equivalent Operating here right now feels like operating at KGEV (Ashe County Airport, Jefferson, elev 3,180 ft) on a standard ISA day.

// Aircraft performance impact MODERATE

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+32%

-22%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+22%

-14%

Light jetCJ4, Phenom 300, M2

+13%

-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)

SCT250

Scattered · base 25,000 ft AGL · ~3–4 oktas

FEW055

Few · base 5,500 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER25,000 ft TOTAL COVERAGE~48% (mixed) FREEZING LEVEL15,559 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC-5)

10:56ZSUNRISE

17:33ZSOLAR NOON

00:09ZSUNSET

00:36ZCIVIL END

CURRENT20:26Z DAYLIGHT REMAINING3h 43m VFR NIGHT BEGINS00:36Z (4h 10m) DAY LENGTH13h 12m

Waxing Gibbous

ILLUMINATION94% MOONRISE21:07Z MOONSET10:20Z 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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