// Station · 10h 1m ago · STALE · HARD STALE

UMBB

Brest International Airport

CAT VFR

WIND 260° / 6 kt

VIS 6+ SM

CEILING Few/scattered only

T/Td 11°C / 6°C

ALTIM 30.06 inHg

ELEV 468 FT

52.1081°N / 23.8968°E

LOCATION · Brest, BY

WIND

260°6 kt

UMBB · 468 FT

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

METRIC

NOW · 16Z

+6H

+12H

+18H

WIND

260°/6

VIS

6+ SM

CEILING

—

LAYERS

SCT043 SCT100

T / Td

11 / 6

ALTIM

30.06"

// Interpretation

VFR with light winds at 260°/6 kt. Visibility 6+ SM and scattered at 4,300 ft, and scattered at 10,000 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 UMBB 121600Z 26003MPS 9999 SCT043CB SCT100 11/06 Q1018 NOSIG

UMBB · day 12 at 16:00 UTC · wind from 260° at 6 kt · visibility 6+ SM · scattered layer at 4,300 ft · scattered layer at 10,000 ft · temp 11°C / dewpoint 6°C · altimeter 30.06" Hg

// Runway analysis · computed from current METAR wind

Wind 260° @ 6 kt

1 USABLE · 1 AVOID

WIND

260°6 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

29★ HDG 290° H5 kt X3 kt LEFT PRIMARY · 8,596'

TAILWIND ENDS · AVOID 1 ends

11 HDG 110° T5 kt X3 kt RIGHT —

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 -3°C

-100FT

-568 FT BELOW FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV468 FT OAT+11°C ISA DELTA-3°C PRESSURE ALT326 FT

// Performance equivalent Your aircraft will perform as if it's at a field -100 ft high on a standard ISA day — that's -568 ft above UMBB's actual elevation.

// Aircraft performance impact ENHANCED

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+0%

-0%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+0%

-0%

Light jetCJ4, Phenom 300, M2

+0%

-0%

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)

SCT100

Scattered · base 10,000 ft AGL · ~3–4 oktas

SCT043

Scattered · base 4,300 ft AGL · ~3–4 oktas

// Computed

CEILING— HIGHEST LAYER10,000 ft TOTAL COVERAGE~48% (mixed) FREEZING LEVEL6,024 ft VFR MARGINunlimited

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

04:46ZSUNRISE

10:11ZSOLAR NOON

15:37ZSUNSET

16:11ZCIVIL END

CURRENT02:01Z DAYLIGHT REMAINING13h 35m VFR NIGHT BEGINS16:11Z (14h 09m) DAY LENGTH10h 51m

Waxing Crescent

ILLUMINATION3% MOONRISE06:09Z MOONSET17:00Z 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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