// Station · 11m ago

KTRI

Tri-Cities Regional TN/VA Airport

CAT VFR

WIND CALM

VIS 10+ SM

CEILING Few/scattered only

T/Td 14.4°C / 13.9°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 · 01Z

+6H

+12H

+18H

WIND

CALM

VIS

10+ SM

CEILING

—

LAYERS

FEW250

T / Td

14 / 14

ALTIM

30.09"

// Interpretation

VFR with winds calm. Visibility better than 10 statute miles and a few 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 130153Z 00000KT 10SM FEW250 14/14 A3009 RMK AO2 SLP171 T01440139 $

KTRI · day 13 at 01:53 UTC · winds calm · visibility 10+ SM · a few clouds at 25,000 ft · temp 14°C / dewpoint 14°C · altimeter 30.09" Hg · automated station w/ precipitation discriminator · sea-level pressure 1017.1 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 +2°C

1,600FT

+81 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV1,519 FT OAT+14°C ISA DELTA+2°C PRESSURE ALT1,348 FT

// Performance equivalent Operating here right now feels like operating at K0A9 (Elizabethton Municipal Airport, Elizabethton, elev 1,593 ft) on a standard ISA day.

// Aircraft performance impact ENHANCED

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+16%

-11%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+11%

-7%

Light jetCJ4, Phenom 300, M2

+6%

-5%

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)

FEW250

Few · base 25,000 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER25,000 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL8,792 ft VFR MARGINunlimited

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

11:35ZSUNRISE

17:17ZSOLAR NOON

22:59ZSUNSET

23:25ZCIVIL END

CURRENT02:04Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS23:25Z (past) DAY LENGTH11h 24m

Waxing Crescent

ILLUMINATION3% MOONRISE12:58Z MOONSET00:22Z FULL MOON IN13 days

// Nearest reporting stations

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

AIRSPACE

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