Laredo International to Boeing Fld/King County International LRD → BFI

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

• SIGMET W21W: thunderstorms (a convective SIGMET) up to 27,000 ft, moving from the southwest at 20 knots, until 7:55 am CDT (12:55 UTC). Over the route from 1048 to 1108 nm out.
  as issued

  WSUS33 KKCI 121055
  MKCW WST 121055
  CONVECTIVE SIGMET 21W
  VALID UNTIL 1255Z
  UT ID NV
  FROM 40ENE TWF-20SSE PIH-40E BVL-20WNW BVL-40ENE TWF
  AREA TS MOV FROM 24020KT. TOPS TO FL270.

• AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the route from 539 to 968 nm out.
• AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the route from 589 to 769 nm out.
• AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 749 to 1427 nm out.
• AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 789 to 1008 nm out.
• AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 839 to 1218 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 1128 to 1168 nm out.
• AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the route from 1278 to 1577 nm out.
• AIRMET ZULU 2C: moderate icing up to 18,000 ft. Near the route, 1398 nm along the route.

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 LRD.

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

No pilot reports within 50 nautical miles of the line in the last three hours.

At BFI when you get there the forecast at the estimated arrival, 5:10 pm PDT (00:10 UTC)

Wind from the west-northwest at 5 knots, visibility more than 6 miles, clear skies VFR

The whole forecast for BFI

• From Mon 5:00 am PDT (12:00 UTC): wind light and variable, visibility more than 6 miles, clear skies
• From Mon 12:00 pm PDT (19:00 UTC): wind from the west-southwest at 4 knots, visibility more than 6 miles, clear skies
• From Mon 2:00 pm PDT (21:00 UTC): wind from the west-northwest at 5 knots, visibility more than 6 miles, clear skies
• From Mon 8:00 pm PDT (03:00 UTC): wind calm, visibility more than 6 miles, scattered clouds at 25,000 feet
• From Tue 4:00 am PDT (11:00 UTC): wind from the south-southeast at 4 knots, visibility more than 6 miles, overcast at 10,000 feet

The forecast for LRD, the departure

• From Mon 7:00 am CDT (12:00 UTC): wind from the southeast at 10 knots, visibility more than 6 miles, a few clouds at 2,000 feet, overcast at 10,000 feet
• At times between Mon 7:00 am CDT (12:00 UTC) and 8:00 am CDT (13:00 UTC): a broken layer at 2,000 feet
• From Mon 10:00 am CDT (15:00 UTC): wind from the south-southeast at 16 knots, gusting to 23, visibility more than 6 miles, scattered clouds at 6,000 feet
• From Tue 1:00 am CDT (06:00 UTC): wind from the southeast at 12 knots, visibility more than 6 miles, scattered clouds at 5,000 feet

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

• 6/8722 ALAMOGORDO, NM, Tuesday, October 13, 2026 Local 15 nm from the route, 489 nm along the route · security · starts tomorrow · ZAB

Daylight

Sunset at LRD 7:11 pm CDT (00:11 UTC), at BFI 6:25 pm PDT (01:25 UTC) (civil twilight ends 6:56 pm PDT (01:56 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.