// Station · 20m ago

UNBB

Barnaul Gherman Titov International Airport

CAT LIFR

WIND 320° / 10 kt

VIS 6+ SM

CEILING BKN at 400 ft

T/Td 13°C / 13°C

ALTIM 29.88 inHg

ELEV 837 FT

53.3613°N / 83.5397°E

LOCATION · Barnaul, RU

WIND

320°10 kt

UNBB · 837 FT

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

METRIC

NOW · 22Z

+6H

+12H

+18H

WIND

320°/10

VIS

6+ SM

CEILING

BKN004

LAYERS

BKN004 BKN021

T / Td

13 / 13

ALTIM

29.88"

// Interpretation

LIFR — ceiling 400 ft. Moderate winds at 320°/10 kt, visibility 6+ SM, broken at 400 ft, and broken at 2,100 ft. LIFR is the lowest standard category. Would improve to IFR above 500 ft and 1 SM.

Loading TAF forecast narrative…

SOURCES · NOAA Aviation Weather Center METAR (TAF loading…)

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// Raw observation METAR string + decoded

METAR UNBB 252200Z 32005MPS 9999 BKN004 BKN021CB 13/13 Q1012 R24/290150 NOSIG RMK QFE737

UNBB · day 25 at 22:00 UTC · wind from 320° at 10 kt · visibility 6+ SM · broken layer at 400 ft · broken layer at 2,100 ft · temp 13°C / dewpoint 13°C · altimeter 29.88" Hg

// Runway analysis · computed from current METAR wind

Wind 320° @ 10 kt

1 USABLE · 1 AVOID · 1 CAUTION

WIND

320°10 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

24★ HDG 240° H2 kt X10 kt RIGHT PRIMARY · 9,350'

TAILWIND ENDS · AVOID 1 ends

06 HDG 060° T2 kt X10 kt LEFT —

Pattern altitude: 1,837 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 +0°C

800FT

-37 FT BELOW FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV837 FT OAT+13°C ISA DELTA+0°C PRESSURE ALT873 FT

// Performance equivalent Operating here right now feels like operating at UNEE (Alexei Leonov Kemerovo International Airport, Kemerovo, elev 863 ft) on a standard ISA day.

// Aircraft performance impact ENHANCED

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+8%

-6%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+6%

-4%

Light jetCJ4, Phenom 300, M2

+3%

-2%

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)

BKN021

Broken · base 2,100 ft AGL · ~5–7 oktas

BKN004

Broken · base 400 ft AGL · ~5–7 oktas

// Computed

CEILING400 ft AGL HIGHEST LAYER2,100 ft TOTAL COVERAGE~83% (mostly covered) FREEZING LEVEL7,403 ft VFR MARGIN-2,600 ft

// Sun & Moon · times in Z · bar = local day (UTC+6)

23:25ZSUNRISE

06:29ZSOLAR NOON

13:33ZSUNSET

14:10ZCIVIL END

CURRENT22:20Z DAYLIGHT REMAINING15h 12m VFR NIGHT BEGINS14:10Z (15h 50m) DAY LENGTH14h 07m

Waxing Gibbous

ILLUMINATION95% MOONRISE09:40Z MOONSET23:47Z FULL MOON IN2 days

// Nearest reporting stations

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

AIRSPACE

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