KIAD Runway 12/30 — Washington Dulles International Airport

Nov 3, 2026 (airport-local day): 0 configuration changes since local midnight, from the tower's TFDM configuration ATIS Alerts recorded. A change is a different arrival or departure set; a new ATIS letter with the same runways is folded into the row it belongs to. The history section below counts the same way over rolling windows.

1. 05:07Z12:07 AM EST(in effect since before the day began)

   9.0 h · current
   Arrivals

   19C19L19R

   Departures

   30
   South flowIn effect at the start of the day

Time · runway 12/30 · airport-wide outlook · confidence · forecast wind · why

1. Now1407Z · 9:07 AM EST·12/30: 30 in use·Current airport configuration (tower TFDM): arrivals 19C · 19L · 19R · departures 30·stated·wind 200° at 7 kt
2. +1 h1507Z · 10:07 AM EST·12/30: 30 likely·airport-wide likely 30·Low 55%·wind calm·Why TAF wind 000° at 0 kt: below 5 kt, wind does not decide the runway.|In recorded use, 30 is the end this airport most often named for arrivals in calm wind (tower TFDM).|That would be a change from the current 19C, 19L and 19R configuration.|Runways 01C and 19C are excluded: stated closed.
3. +2 h1607Z · 11:07 AM EST·12/30: 30 likely·airport-wide likely 30·Low 55%·wind calm·Why TAF wind 000° at 0 kt: below 5 kt, wind does not decide the runway.|In recorded use, 30 is the end this airport most often named for arrivals in calm wind (tower TFDM).|That would be a change from the current 19C, 19L and 19R configuration.|Runways 01C and 19C are excluded: stated closed.
4. +3 h1707Z · 12:07 PM EST·12/30: 30 likely·airport-wide likely 30·Low 55%·wind calm·Why TAF wind 000° at 0 kt: below 5 kt, wind does not decide the runway.|In recorded use, 30 is the end this airport most often named for arrivals in calm wind (tower TFDM).|That would be a change from the current 19C, 19L and 19R configuration.|Runways 01C and 19C are excluded: stated closed.
5. +6 h2007Z · 3:07 PM EST·12/30: not favored·airport-wide likely 19L then 19R·South flow·7 kt headwind, 1 kt crosswind·Low 35%·wind 170° at 7 kt·Why TAF forecast wind 170° at 7 kt favors south-facing runway ends: 7 kt headwind and 1 kt crosswind on 19L versus 7 kt headwind on 19R.|The airport is already using 19C, 19L and 19R (stated by the tower (TFDM)), so no change is needed.|Runways 01C and 19C are excluded: stated closed.|Confidence falls with forecast distance (+6 h).
6. +12 h0207Z · 9:07 PM EST·12/30: not favored·airport-wide likely 19L then 19R·South flow·7 kt headwind, 1 kt crosswind·Low 20%·wind 170° at 7 kt·Why TAF forecast wind 170° at 7 kt favors south-facing runway ends: 7 kt headwind and 1 kt crosswind on 19L versus 7 kt headwind on 19R.|The airport is already using 19C, 19L and 19R (stated by the tower (TFDM)), so no change is needed.|Runways 01C and 19C are excluded: stated closed.|Confidence falls with forecast distance (+12 h).

ATIS Alerts Predicted Runway is an estimate from the TAF wind forecast, runway geometry (most headwind, crosswind penalised, tailwind over 5 kt avoided, longest runway breaks ties), the current stated configuration and any stated closures; recorded tower use since Sep 18, 2026 (720 h) is an input wherever a wind sector has 24 h on record. Each row lists its reasons; “no runway favored” is a genuine answer under variable or light wind, never replaced by a guess. It is not an ATC assignment and does not know about noise abatement or traffic flow unless the recorded history shows them. TAF issued 1120Z (6:20 AM EST).

Source: FAA NASR 28-day subscription, cycle effective 2026-10-01 (equipment on record) · FAA NOTAMs via SWIM (live)and the current D-ATIS (outages). “Not available” means the FAA record lists no such equipment for the end; nothing here is inferred. An outage annotation is only ever a reading of the official text shown with it. Declared distances are not shown in this phase.

The current D-ATIS does not state LAHSO in effect. Source: FAA NASR cycle 2026-10-01; D-ATIS text read by ATIS Alerts.

Rows marked “Runway 12/30” are sectorized to this runway complex in the FAA record; “Airport-wide” rows serve every runway. Source: FAA NASR FRQ, cycle 2026-10-01. Verify on the current chart supplement before use.

Length

10,501 ft

Width

150 ft

Surface

Concrete · Good condition

Surface treatment

Grooved

Weight bearing (lb)

S 200k · D 250k · 2D 450k · 2D/2D2 875k

PCN

1108

Runway lights

Lighted

Airport elevation

312 ft

Published FAA baseline

Open

Published NASR record; does not reflect temporary closures or restrictions. Current operational status is the card at the top of the page.

Runway 12/30 numbers are magnetic; the stored geometry and every wind calculation on this page are TRUE north, so they never need a variation correction. Magnetic headings use the FAA's published variation for this airport, 10.0°W (2000), the same value printed on the FAA airport diagram. Surface condition, treatment, weight bearing, thresholds and traffic pattern are from the FAA NASR record (cycle 2026-10-01); lighting, ILS and LAHSO are in their own sections above. Declared distances are not shown in this phase.

Runway percentages are measured independently. Multiple runways can be active simultaneously, so totals may exceed 100%.

Observed runway usage — 720 hours of tower TFDM runway configuration history collected · 25 distinct configurations observed · through Nov 3, 2026. Shares are the fraction of recorded hours in which the tower's TFDM configuration listed each end. Wind sectors use the wind reported when each configuration began. Nothing here is inferred from wind; the wind-favored analysis for KIAD is a separate module. 90-day, 12-month and seasonal views appear once the record is long enough.

11 departure procedures · 17 STARs · FAA d-TPP cycle 2611. Plates open on aeronav.faa.gov (public domain); ATIS Alerts does not reproduce charts or minimums.