Austin-Bergstrom International to Seattle-Tacoma International AUS → SEA

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

• SIGMET W63W: thunderstorms (a convective SIGMET) up to 37,000 ft, moving from the southwest at 40 knots, until 7:55 pm CDT (00:55 UTC). Over the route from 479 to 749 nm out.
  as issued

  WSUS33 KKCI 112255
  MKCW WST 112255
  CONVECTIVE SIGMET 63W
  VALID UNTIL 0055Z
  CO NM AZ UT
  FROM 30SSW MTU-30NW PUB-20NW TCC-60SE ABQ-40N SJN-30SSW MTU
  AREA SEV TS MOV FROM 23040KT. TOPS TO FL370.
  WIND GUSTS TO 50KT POSS.

• SIGMET W66W: thunderstorms (a convective SIGMET) up to 38,000 ft, moving from the southwest at 40 knots, until 7:55 pm CDT (00:55 UTC). Over the route from 809 to 819 nm out.
  as issued

  WSUS33 KKCI 112255
  MKCW WST 112255
  CONVECTIVE SIGMET 66W
  VALID UNTIL 0055Z
  CO WY UT
  FROM 10NW OCS-60W CHE-50ESE MTU-50N MTU-10NW OCS
  AREA TS MOV FROM 21040KT. TOPS TO FL380.

• SIGMET W67W: thunderstorms (a convective SIGMET) up to 28,000 ft, moving from the south at 40 knots, until 7:55 pm CDT (00:55 UTC). Over the route from 919 to 1048 nm out.
  as issued

  WSUS33 KKCI 112255
  MKCW WST 112255
  CONVECTIVE SIGMET 67W
  VALID UNTIL 0055Z
  WY UT ID NV
  FROM 40S DBS-40WNW BPI-50N HVE-50W DTA-50SSE TWF-40S DBS
  AREA EMBD TS MOV FROM 20040KT. TOPS TO FL280.

• AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 479 to 1008 nm out.
• AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 599 to 1258 nm out.
• AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 639 to 1368 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). Over the route from 669 to 988 nm out.
• AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Near the route, 789 nm along the route.
• AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 829 to 1178 nm out.
• AIRMET SIERRA 2E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 859 to 889 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). Over the route from 978 to 1208 nm out.
• AIRMET ZULU 2C: moderate icing up to 14,000 ft. Over the route from 1248 to 1428 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 AUS.

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

Not fetched just now.

At SEA when you get there the forecast at the estimated arrival, 5:12 am PDT (12:12 UTC)

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

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

• 6/5849 Austin, TX, Friday, October 2, 2026 through Monday, October 12, 2026 UTC 2 nm from the route, at the departure end · drones kept away from a public gathering · until 12 October · ZHU

Daylight

Sunset at AUS 7:03 pm CDT (00:03 UTC), at SEA 6:27 pm PDT (01:27 UTC) (civil twilight ends 6:58 pm PDT (01:58 UTC)). At 120 knots the arrival at SEA is before sunrise there (7:23 am PDT (14:23 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.