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// Station · 26m ago

KIAD

Washington Dulles International Airport
CAT VFR
WIND VRB / 4 kt
VIS 10+ SM
CEILING BKN at 25,000 ft
T/Td 27.2°C / 21.1°C
ALTIM 29.96 inHg
ELEV 312 FT
38.9445°N / 77.4558°W
LOCATION · Dulles, US
N
WIND
VRB4 kt
KIAD · 312 FT
© OSM · CartoDB

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

METRIC
NOW · 13Z
+6H
+12H
+18H
WIND
VRB/4
 
 
 
VIS
10+ SM
 
 
 
CEILING
BKN250
 
 
 
LAYERS
FEW120 SCT190 BKN250
 
 
 
T / Td
27 / 21
 
 
 
ALTIM
29.96"
 
 
 

// Interpretation

VFR — ceiling 25,000 ft. Light winds at variable/4 kt, visibility better than 10 statute miles, a few at 12,000 ft, scattered at 19,000 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 111352Z VRB04KT 10SM FEW120 SCT190 BKN250 27/21 A2996 RMK AO2 SLP142 T02720211 $

KIAD · day 11 at 13:52 UTC · wind variable at 4 kt · visibility 10+ SM · a few clouds at 12,000 ft · scattered layer at 19,000 ft · broken layer at 25,000 ft · temp 27°C / dewpoint 21°C · altimeter 29.96" Hg · automated station w/ precipitation discriminator · sea-level pressure 1014.2 mb

// Runway analysis · computed from current METAR wind

Wind VRB @ 4 kt
ALL USABLE · WINDS CALM
N
WIND
VRB4 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS 8 ends
01C HDG 010° CALM 11,500'
19C HDG 190° CALM 11,500'
01R HDG 010° CALM 11,500'
19L HDG 190° CALM 11,500'
12 HDG 120° CALM 10,501'
30 HDG 300° CALM 10,501'
01L HDG 010° CALM 9,400'
19R HDG 190° CALM 9,400'
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 +13°C

1,800FT
+1,488 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↘ -200 FT
2,300 1,600 900
24h AGO18h12h6hNOW
FIELD ELEV312 FT OAT+27°C ISA DELTA+13°C PRESSURE ALT271 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
+18%
-13%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+13%
-8%
Light jetCJ4, Phenom 300, M2
+7%
-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.

// Cloud layers · 3 reported · highest to lowest

FT 0 5k 10k 15k 20k 25k FRZ LVL · 14,049 FT FEW120 SCT190 BKN250 · CEILING KIAD ELEV · 312 FT
// Reported layers (highest → lowest)
BKN250
Broken · base 25,000 ft AGL · ~5–7 oktas
SCT190
Scattered · base 19,000 ft AGL · ~3–4 oktas
FEW120
Few · base 12,000 ft AGL · ~1–2 oktas
// Computed
CEILING25,000 ft AGL HIGHEST LAYER25,000 ft TOTAL COVERAGE~91% (overcast) FREEZING LEVEL14,049 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
CURRENT14:18Z DAYLIGHT REMAINING10h 19m VFR NIGHT BEGINS01:09Z (10h 51m) DAY LENGTH14h 43m
Waning Crescent
ILLUMINATION11% MOONRISE07:18Z MOONSET22:02Z 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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