// Station · 1h 8m ago · STALE

KBOS

Boston Logan International Airport

CAT VFR

WIND 100° / 9 kt

VIS 10+ SM

CEILING Few/scattered only

T/Td 24.4°C / 13.3°C

ALTIM 30.00 inHg

ELEV 20 FT

42.3620°N / 71.0079°W

LOCATION · Boston, US

WIND

100°9 kt

KBOS · 20 FT

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

METRIC

NOW · 15Z

+6H

+12H

+18H

WIND

100°/9

VIS

10+ SM

CEILING

—

LAYERS

FEW045 FEW055 SCT250

T / Td

24 / 13

ALTIM

30.00"

// Interpretation

VFR with moderate winds at 100°/9 kt. Visibility better than 10 statute miles and a few at 4,500 ft, a few at 5,500 ft, 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 111554Z 10009KT 10SM FEW045 FEW055 SCT250 24/13 A3000 RMK AO2 SLP159 T02440133

KBOS · day 11 at 15:54 UTC · wind from 100° at 9 kt · visibility 10+ SM · a few clouds at 4,500 ft · a few clouds at 5,500 ft · scattered layer at 25,000 ft · temp 24°C / dewpoint 13°C · altimeter 30.00" Hg · automated station w/ precipitation discriminator · sea-level pressure 1015.9 mb

// Runway analysis · computed from current METAR wind

Wind 100° @ 9 kt

6 USABLE · 6 AVOID · 5 CAUTION

WIND

100°9 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 6 usable

09★ HDG 090° H9 kt X2 kt RIGHT PRIMARY · 7,001'

14 HDG 140° H7 kt X6 kt LEFT ⚠ HIGH XW · 67%

15L HDG 150° H6 kt X7 kt LEFT ⚠ HIGH XW · 78%

15R HDG 150° H6 kt X7 kt LEFT ⚠ HIGH XW · 78%

04L HDG 040° H5 kt X8 kt RIGHT ⚠ HIGH XW · 89%

04R HDG 040° H5 kt X8 kt RIGHT ⚠ HIGH XW · 89%

TAILWIND ENDS · AVOID 6 ends

22R HDG 220° T4 kt X8 kt LEFT —

22L HDG 220° T4 kt X8 kt LEFT —

33R HDG 330° T6 kt X7 kt RIGHT —

33L HDG 330° T6 kt X7 kt RIGHT —

32 HDG 320° T7 kt X6 kt RIGHT —

27 HDG 270° T9 kt X2 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 +9°C

1,100FT

+1,080 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↘ -1,100 FT

24h AGO18h12h6hNOW

FIELD ELEV20 FT OAT+24°C ISA DELTA+9°C PRESSURE ALT-62 FT

// Performance equivalent Operating here right now feels like operating at KPSF (Pittsfield Municipal Airport, Pittsfield, elev 1,188 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+11%

-8%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+8%

-5%

Light jetCJ4, Phenom 300, M2

+4%

-3%

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 · 3 reported · highest to lowest

// Reported layers (highest → lowest)

SCT250

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

FEW055

Few · base 5,500 ft AGL · ~1–2 oktas

FEW045

Few · base 4,500 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER25,000 ft TOTAL COVERAGE~56% (mixed) FREEZING LEVEL12,343 ft VFR MARGINunlimited

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

09:18ZSUNRISE

16:50ZSOLAR NOON

00:22ZSUNSET

00:56ZCIVIL END

CURRENT17:02Z DAYLIGHT REMAINING7h 20m VFR NIGHT BEGINS00:56Z (7h 54m) DAY LENGTH15h 04m

Waning Crescent

ILLUMINATION10% MOONRISE06:48Z MOONSET21:52Z FULL MOON IN18 days

// Nearest reporting stations · 5 shown · 60 NM radius

KASH

VFR

Nashua Airport / Boire Field · Nashua

WIND: VRB / 4 kt
VIS: 10+ SM
CEILING: BKN065
DIST: 34 NM NW
AGE: 6m ago

KSFZ

VFR

North Central State Airport · Pawtucket

WIND: 350° / 5 kt
VIS: 10+ SM
CEILING: CLR
DIST: 34 NM SW
AGE: 6m ago

KFIT

VFR

Fitchburg Municipal Airport · Fitchburg

WIND: VRB / 3 kt
VIS: 10+ SM
CEILING: SCT070
DIST: 35 NM W
AGE: 10m ago

KORH

VFR

Worcester Regional Airport · Worcester

WIND: VRB / 3 kt
VIS: 10+ SM
CEILING: SCT065
DIST: 39 NM W
AGE: 8m ago

KPVC

VFR

Provincetown Municipal Airport · Provincetown

WIND: 040° / 8 kt
VIS: 10+ SM
CEILING: CLR
DIST: 39 NM SE
AGE: 6m ago

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

AIRSPACE

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