Boeing Fld/King County International to Dallas-Fort Worth International BFI → DFW

Warnings the route crosses SIGMETs and AIRMETs whose area the line passes through or comes within 25 nm of

• SIGMET C12C: thunderstorms (a convective SIGMET) up to 25,000 ft, moving from the southwest at 40 knots, until 1:55 am PDT (08:55 UTC). Near the route, 985 nm along the route.
  as issued

  WSUS32 KKCI 120655
  MKCC WST 120655
  CONVECTIVE SIGMET 12C
  VALID UNTIL 0855Z
  CO NM
  FROM 40W PUB-30SSE PUB-30W CIM-50WSW ALS-40W PUB
  DMSHG AREA TS MOV FROM 22040KT. TOPS TO FL250.

• AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft, from 11:00 pm PDT (06:00 UTC). Over the first 199 nm of the route.
• AIRMET ZULU 2C: moderate icing up to 23,000 ft, from 11:00 pm PDT (06:00 UTC). Over the route from 119 to 328 nm out.
• AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist), from 11:00 pm PDT (06:00 UTC). Over the route from 189 to 776 nm out.
• AIRMET SIERRA 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist), from 11:00 pm PDT (06:00 UTC). Over the route from 279 to 448 nm out.
• AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft, from 11:00 pm PDT (06:00 UTC). Over the route from 279 to 448 nm out.
• AIRMET ZULU 2C: moderate icing up to 23,000 ft, from 11:00 pm PDT (06:00 UTC). Over the route from 338 to 726 nm out.
• AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft, from 11:00 pm PDT (06:00 UTC). Over the route from 607 to 995 nm out.
• AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft, from 11:00 pm PDT (06:00 UTC). Over the route from 627 to 1035 nm out.
• AIRMET TANGO 1W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground), from 11:00 pm PDT (06:00 UTC). Over the route from 687 to 945 nm out.
• AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots), from 11:00 pm PDT (06:00 UTC). Over the route from 687 to 736 nm out.
• AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft, from 11:00 pm PDT (06:00 UTC). Over the route from 1005 to 1005 nm out.
• AIRMET TANGO 3W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground), from 11:00 pm PDT (06:00 UTC). Over the route from 1025 to 1244 nm out.

A SIGMET warns of weather hazardous to all aircraft; an AIRMET of weather that matters to small aircraft and to flying without instruments. "From 60 to 180 nm out" is measured along the route from BFI.

Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first

Not fetched just now.

At DFW when you get there the forecast at the estimated arrival, 1:15 pm CDT (18:15 UTC)

DFW has no terminal forecast; use the nearest airport that does.

Temporary flight restrictions on the line or within 25 nm of it

• 6/8784 LAKE GEORGE, CO, Sunday, October 11, 2026 through Tuesday, October 13, 2026 UTC 5 nm from the route, 895 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 13 October · ZDV
• 9/2934 DALLAS, TX 11 nm from the route, at the destination end · a VIP movement · ZFW
• 6/8646 Arlington, TX, Thursday, October 15, 2026 through Friday, October 16, 2026 UTC 8 nm from the route, at the destination end · drones kept away from a public gathering · starts Thursday 15 October · ZFW

Daylight

Sunset at BFI 6:25 pm PDT (01:25 UTC), at DFW 6:58 pm CDT (23:58 UTC) (civil twilight ends 7:23 pm CDT (00:23 UTC)).

Each restriction opens the FAA's own page with the exact area, heights and times. Ordinary notices to air missions (closed runways, lights out) are not shown: the FAA's notice search is not open to sites like this one at this time.