// Station · 9m ago

KBOS

Boston Logan International Airport

CAT VFR

WIND 350° / 9 kt

VIS 10+ SM

CEILING Few/scattered only

T/Td 18.9°C / 12.8°C

ALTIM 29.81 inHg

ELEV 20 FT

42.3620°N / 71.0079°W

LOCATION · Boston, US

WIND

350°9 kt

KBOS · 20 FT

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

METRIC

NOW · 00Z

+6H

+12H

+18H

WIND

350°/9

VIS

10+ SM

CEILING

—

LAYERS

SCT250

T / Td

19 / 13

ALTIM

29.81"

// Interpretation

VFR with moderate winds at 350°/9 kt. Visibility better than 10 statute miles and scattered 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 KBOS 130054Z 35009KT 10SM SCT250 19/13 A2981 RMK AO2 SLP094 T01890128

KBOS · day 13 at 00:54 UTC · wind from 350° at 9 kt · visibility 10+ SM · scattered layer at 25,000 ft · temp 19°C / dewpoint 13°C · altimeter 29.81" Hg · automated station w/ precipitation discriminator · sea-level pressure 1009.4 mb

// Runway analysis · computed from current METAR wind

Wind 350° @ 9 kt

6 USABLE · 6 AVOID · 3 CAUTION

WIND

350°9 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 6 usable

33R★ HDG 330° H8 kt X3 kt RIGHT PRIMARY · 2,557'

33L HDG 330° H8 kt X3 kt RIGHT 10,083'

32 HDG 320° H8 kt X4 kt RIGHT 5,000'

04L HDG 040° H6 kt X7 kt LEFT ⚠ HIGH XW · 78%

04R HDG 040° H6 kt X7 kt LEFT ⚠ HIGH XW · 78%

27 HDG 270° H2 kt X9 kt RIGHT ⚠ HIGH XW · 100%

TAILWIND ENDS · AVOID 6 ends

09 HDG 090° T2 kt X9 kt LEFT —

22R HDG 220° T6 kt X7 kt RIGHT —

22L HDG 220° T6 kt X7 kt RIGHT —

14 HDG 140° T8 kt X5 kt LEFT —

15L HDG 150° T8 kt X3 kt LEFT —

15R HDG 150° T8 kt X3 kt LEFT —

Pattern altitude: 1,020 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 +4°C

600FT

+580 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV20 FT OAT+19°C ISA DELTA+4°C PRESSURE ALT127 FT

// Performance equivalent Operating here right now feels like operating at KORE (Orange Municipal Airport, Orange, elev 555 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+6%

-4%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+4%

-3%

Light jetCJ4, Phenom 300, M2

+2%

-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 · 1 reported · highest to lowest

// Reported layers (highest → lowest)

SCT250

Scattered · base 25,000 ft AGL · ~3–4 oktas

// Computed

CEILING— HIGHEST LAYER25,000 ft TOTAL COVERAGE~40% (mixed) FREEZING LEVEL9,565 ft VFR MARGINunlimited

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

10:54ZSUNRISE

16:31ZSOLAR NOON

22:09ZSUNSET

22:37ZCIVIL END

CURRENT01:03Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS22:37Z (past) DAY LENGTH11h 14m

Waxing Crescent

ILLUMINATION3% MOONRISE12:15Z MOONSET23:29Z FULL MOON IN13 days

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

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