// Station · 54m ago

UMBB

Brest International Airport

CAT VFR

WIND 300° / 23 kt G31

VIS 6+ SM

CEILING BKN at 5,600 ft

T/Td 20°C / 6°C

ALTIM 29.85 inHg

ELEV 468 FT

52.1081°N / 23.8968°E

LOCATION · Brest, BY

WIND

300°23 kt

UMBB · 468 FT

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

METRIC

NOW · 10Z

+6H

+12H

+18H

WIND

300°/23G31

VIS

6+ SM

CEILING

BKN056

LAYERS

BKN056

T / Td

20 / 6

ALTIM

29.85"

// Interpretation

VFR — ceiling 5,600 ft. Strong winds at 300°/23 kt, gusting 31, visibility 6+ SM, broken at 5,600 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 UMBB 271000Z 30012G16MPS 9999 BKN056 20/06 Q1011 NOSIG

UMBB · day 27 at 10:00 UTC · wind from 300° at 23 kt, gusts to 31 kt · visibility 6+ SM · broken layer at 5,600 ft · temp 20°C / dewpoint 6°C · altimeter 29.85" Hg

// Runway analysis · computed from current METAR wind

Wind 300° @ 23 ktG31

1 USABLE · 1 AVOID

WIND

300°23G31 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

29★ HDG 290° H23 kt X4 kt RIGHT PRIMARY · 8,596'

TAILWIND ENDS · AVOID 1 ends

11 HDG 110° T23 kt X4 kt LEFT —

Pattern altitude: 1,468 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 +6°C

1,300FT

+832 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↗ +0 FT

24h AGO18h12h6hNOW

FIELD ELEV468 FT OAT+20°C ISA DELTA+6°C PRESSURE ALT533 FT

// Performance equivalent Your aircraft will perform as if it's at a field 1,300 ft high on a standard ISA day — that's +832 ft above UMBB's actual elevation.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+13%

-9%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+9%

-6%

Light jetCJ4, Phenom 300, M2

+5%

-4%

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.

// Cloud layers · 1 reported · highest to lowest

// Reported layers (highest → lowest)

BKN056

Broken · base 5,600 ft AGL · ~5–7 oktas

// Computed

CEILING5,600 ft AGL HIGHEST LAYER5,600 ft TOTAL COVERAGE~75% (mostly covered) FREEZING LEVEL10,569 ft VFR MARGIN+2,600 ft

// Sun & Moon · times in Z · bar = local day (UTC+2)

02:16ZSUNRISE

10:22ZSOLAR NOON

18:29ZSUNSET

19:15ZCIVIL END

CURRENT10:54Z DAYLIGHT REMAINING7h 35m VFR NIGHT BEGINS19:15Z (8h 20m) DAY LENGTH16h 13m

Waxing Gibbous

ILLUMINATION83% MOONRISE10:59Z MOONSET03:12Z FULL MOON IN4 days

// Nearest reporting stations · 2 shown · 100 NM (sparse area)

EPLB

VFR

Lublin Airport · Lublin

WIND: 290° / 15 kt
VIS: 6+ SM
CEILING: CLR
DIST: 68 NM SW
AGE: 24m ago

UMMG

VFR

Hrodna Airport · Hrodna

WIND: 300° / 14 ktG19
VIS: 6+ SM
CEILING: BKN040
DIST: 90 NM N
AGE: 39m ago

// Area map · 100 NM radius · CartoDB Dark Matter + aeronautical overlay

AIRSPACE

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