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// Station · 31m ago

KIAD

Washington Dulles International Airport
CAT VFR
WIND 250° / 7 kt
VIS 10+ SM
CEILING BKN at 25,000 ft
T/Td 28.3°C / 21.1°C
ALTIM 29.97 inHg
ELEV 312 FT
38.9445°N / 77.4558°W
LOCATION · Dulles, US
N
WIND
250°7 kt
KIAD · 312 FT
© OSM · CartoDB

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

METRIC
NOW · 15Z
+6H
+12H
+18H
WIND
250°/7
 
 
 
VIS
10+ SM
 
 
 
CEILING
BKN250
 
 
 
LAYERS
FEW031 FEW070 SCT180 BKN250
 
 
 
T / Td
28 / 21
 
 
 
ALTIM
29.97"
 
 
 

// Interpretation

VFR — ceiling 25,000 ft. Light winds at 250°/7 kt, visibility better than 10 statute miles, a few at 3,100 ft, a few at 7,000 ft, scattered at 18,000 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 111552Z 25007KT 10SM FEW031 FEW070 SCT180 BKN250 28/21 A2997 RMK AO2 SLP146 T02830211 $

KIAD · day 11 at 15:52 UTC · wind from 250° at 7 kt · visibility 10+ SM · a few clouds at 3,100 ft · a few clouds at 7,000 ft · scattered layer at 18,000 ft · broken layer at 25,000 ft · temp 28°C / dewpoint 21°C · altimeter 29.97" Hg · automated station w/ precipitation discriminator · sea-level pressure 1014.6 mb

// Runway analysis · computed from current METAR wind

Wind 250° @ 7 kt
4 USABLE · 4 AVOID · 3 CAUTION
N
WIND
250°7 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
HEADWIND ENDS 4 usable
30 HDG 300° H4 kt X5 kt LEFT PRIMARY · 10,501'
19C HDG 190° H4 kt X6 kt RIGHT ⚠ HIGH XW · 86%
19R HDG 190° H4 kt X6 kt RIGHT ⚠ HIGH XW · 86%
19L HDG 190° H4 kt X6 kt RIGHT ⚠ HIGH XW · 86%
TAILWIND ENDS · AVOID 4 ends
01C HDG 010° T4 kt X6 kt LEFT
01L HDG 010° T4 kt X6 kt LEFT
01R HDG 010° T4 kt X6 kt LEFT
12 HDG 120° T4 kt X5 kt RIGHT
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 +14°C

1,900FT
+1,588 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↘ -200 FT
2,300 1,600 900
24h AGO18h12h6hNOW
FIELD ELEV312 FT OAT+28°C ISA DELTA+14°C PRESSURE ALT259 FT
// Performance equivalent Operating here right now feels like operating at KVJI (Virginia Highlands Airport, Abingdon, elev 2,087 ft) on a standard ISA day.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+19%
-13%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+13%
-9%
Light jetCJ4, Phenom 300, M2
+8%
-6%

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 · 4 reported · highest to lowest

FT 0 5k 10k 15k 20k 25k FRZ LVL · 14,605 FT FEW031 FEW070 SCT180 BKN250 · CEILING KIAD ELEV · 312 FT
// Reported layers (highest → lowest)
BKN250
Broken · base 25,000 ft AGL · ~5–7 oktas
SCT180
Scattered · base 18,000 ft AGL · ~3–4 oktas
FEW070
Few · base 7,000 ft AGL · ~1–2 oktas
FEW031
Few · base 3,100 ft AGL · ~1–2 oktas
// Computed
CEILING25,000 ft AGL HIGHEST LAYER25,000 ft TOTAL COVERAGE~99% (overcast) FREEZING LEVEL14,605 ft VFR MARGIN+22,000 ft

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

09:54ZSUNRISE
17:16ZSOLAR NOON
00:37ZSUNSET
01:09ZCIVIL END
CURRENT16:23Z DAYLIGHT REMAINING8h 14m VFR NIGHT BEGINS01:09Z (8h 45m) DAY LENGTH14h 43m
Waning Crescent
ILLUMINATION11% MOONRISE07:23Z MOONSET22:06Z FULL MOON IN18 days

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

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

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