// Station · 28m ago

UIBB

Bratsk Airport

CAT VFR

WIND 140° / 8 kt

VIS 6+ SM

CEILING Few/scattered only

T/Td 3°C / -1°C

ALTIM 30.03 inHg

ELEV 1,610 FT

56.3696°N / 101.7018°E

LOCATION · Bratsk, RU

WIND

140°8 kt

UIBB · 1,610 FT

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

METRIC

NOW · 02Z

+6H

+12H

+18H

WIND

140°/8

VIS

6+ SM

CEILING

—

LAYERS

FEW016

T / Td

3 / -1

ALTIM

30.03"

// Interpretation

VFR with moderate winds at 140°/8 kt. Visibility 6+ SM and a few at 1,600 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 UIBB 130200Z 14004MPS 110V180 9999 FEW016 03/M01 Q1017 R12/CLRD62 NOSIG RMK QFE720/0960

UIBB · day 13 at 02:00 UTC · wind from 140° at 8 kt · visibility 6+ SM · a few clouds at 1,600 ft · temp 3°C / dewpoint -1°C · altimeter 30.03" Hg

// Runway analysis · computed from current METAR wind

Wind 140° @ 8 kt

1 USABLE · 1 AVOID

WIND

140°8 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

12★ HDG 120° H8 kt X3 kt RIGHT PRIMARY · 10,368'

TAILWIND ENDS · AVOID 1 ends

30 HDG 300° T8 kt X3 kt LEFT —

Pattern altitude: 2,610 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 -9°C

400FT

-1,210 FT BELOW FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV1,610 FT OAT+3°C ISA DELTA-9°C PRESSURE ALT1,498 FT

// Performance equivalent Operating here right now feels like operating at UIKK (Kirensk Airport, Kirensk, elev 840 ft) on a standard ISA day.

// Aircraft performance impact ENHANCED

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+4%

-3%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+3%

-2%

Light jetCJ4, Phenom 300, M2

+2%

-1%

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)

FEW016

Few · base 1,600 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER1,600 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL3,125 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC+7)

23:40ZSUNRISE

05:00ZSOLAR NOON

10:20ZSUNSET

10:58ZCIVIL END

CURRENT02:28Z DAYLIGHT REMAINING7h 52m VFR NIGHT BEGINS10:58Z (8h 30m) DAY LENGTH10h 39m

Waxing Crescent

ILLUMINATION3% MOONRISE01:04Z MOONSET11:44Z FULL MOON IN13 days

// Nearest reporting stations

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

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