// Station · 21m ago

KIAD

Washington Dulles International Airport

CAT VFR

WIND 310° / 10 kt G16

VIS 8.0 SM

CEILING BKN at 5,500 ft

T/Td 26.7°C / 15°C

ALTIM 30.06 inHg

ELEV 312 FT

38.9445°N / 77.4558°W

LOCATION · Dulles, US

WIND

310°10 kt

KIAD · 312 FT

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

METRIC

NOW · 17Z

+6H

+12H

+18H

WIND

310°/10G16

VIS

8.0 SM

CEILING

BKN055

LAYERS

SCT048 BKN055 BKN250

T / Td

27 / 15

ALTIM

30.06"

// Interpretation

VFR — ceiling 5,500 ft. Moderate winds at 310°/10 kt, gusting 16, visibility 8.0 SM, scattered at 4,800 ft, broken at 5,500 ft, and broken 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 KIAD 251752Z 31010G16KT 8SM SCT048 BKN055 BKN250 27/15 A3006 RMK AO2 SLP177 T02670150 10272 20178 58014

KIAD · day 25 at 17:52 UTC · wind from 310° at 10 kt, gusts to 16 kt · visibility 8.0 SM · scattered layer at 4,800 ft · broken layer at 5,500 ft · broken layer at 25,000 ft · temp 27°C / dewpoint 15°C · altimeter 30.06" Hg · automated station w/ precipitation discriminator · sea-level pressure 1017.7 mb

// Runway analysis · computed from current METAR wind

Wind 310° @ 10 ktG16

4 USABLE · 4 AVOID · 3 CAUTION

WIND

310°10G16 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 4 usable

30★ HDG 300° H10 kt X2 kt RIGHT PRIMARY · 10,501'

01C HDG 010° H5 kt X9 kt LEFT ⚠ HIGH XW · 56%

01L HDG 010° H5 kt X9 kt LEFT ⚠ HIGH XW · 56%

01R HDG 010° H5 kt X9 kt LEFT ⚠ HIGH XW · 56%

TAILWIND ENDS · AVOID 4 ends

19C HDG 190° T5 kt X9 kt RIGHT —

19R HDG 190° T5 kt X9 kt RIGHT —

19L HDG 190° T5 kt X9 kt RIGHT —

12 HDG 120° T10 kt X2 kt LEFT —

Pattern altitude: 1,312 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 +12°C

1,600FT

+1,288 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV312 FT OAT+27°C ISA DELTA+12°C PRESSURE ALT170 FT

// Performance equivalent Operating here right now feels like operating at K0VG (Lee County Airport, Jonesville, elev 1,411 ft) on a standard ISA day.

// Aircraft performance impact MODERATE

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+16%

-11%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+11%

-7%

Light jetCJ4, Phenom 300, M2

+6%

-5%

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 · 3 reported · highest to lowest

// Reported layers (highest → lowest)

BKN250

Broken · base 25,000 ft AGL · ~5–7 oktas

BKN055

Broken · base 5,500 ft AGL · ~5–7 oktas

SCT048

Scattered · base 4,800 ft AGL · ~3–4 oktas

// Computed

CEILING5,500 ft AGL HIGHEST LAYER25,000 ft TOTAL COVERAGE~91% (overcast) FREEZING LEVEL13,797 ft VFR MARGIN+2,500 ft

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

10:33ZSUNRISE

17:13ZSOLAR NOON

23:53ZSUNSET

00:20ZCIVIL END

CURRENT18:13Z DAYLIGHT REMAINING5h 40m VFR NIGHT BEGINS00:20Z (6h 07m) DAY LENGTH13h 19m

Waxing Gibbous

ILLUMINATION94% MOONRISE20:40Z MOONSET09:59Z FULL MOON IN2 days

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

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