Chicago O'Hare International to Boeing Fld/King County International ORD → BFI

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

• SIGMET 3W: thunderstorms (a convective SIGMET) up to 31,000 ft, moving from the southwest at 40 knots, until 9:55 pm CDT (02:55 UTC). Near the route, 825 nm along the route.
  as issued

  WSUS33 KKCI 120055
  MKCW WST 120055
  CONVECTIVE SIGMET 3W
  VALID UNTIL 0255Z
  MT WY
  FROM 10WSW MLS-70E DDY-20N LAR-50E BPI-30NE BIL-10WSW MLS
  AREA TS MOV FROM 22040KT. TOPS TO FL310.

• 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). Over the route from 209 to 288 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). Near the route, 398 nm along the route.
• 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 586 to 1222 nm out.
• AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 646 to 1222 nm out.
• AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 924 to 1262 nm out.
• AIRMET ZULU 2C: moderate icing up to 16,000 ft. Over the route from 1024 to 1382 nm out.
• AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 149 nm of 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 ORD.

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

Not fetched just now.

At BFI when you get there the forecast at the estimated arrival, 6:41 am PDT (13:41 UTC)

Wind light and variable, visibility more than 6 miles, patches of fog, clear skies VFR

The whole forecast for BFI

• From Sun 5:00 pm PDT (00:00 UTC): wind from the north-northwest at 8 knots, gusting to 18, visibility more than 6 miles, a few clouds at 5,000 feet
• From Sun 7:00 pm PDT (02:00 UTC): wind light and variable, visibility more than 6 miles, clear skies
• From Mon 3:00 am PDT (10:00 UTC): wind light and variable, visibility more than 6 miles, patches of fog, clear skies
• From Mon 9:00 am PDT (16:00 UTC): wind from the south-southeast at 3 knots, visibility more than 6 miles, clear skies
• From Mon 12:00 pm PDT (19:00 UTC): wind from the west-southwest at 3 knots, visibility more than 6 miles, clear skies
• From Mon 2:00 pm PDT (21:00 UTC): wind from the west at 5 knots, visibility more than 6 miles, clear skies

The forecast for ORD, the departure

• From Sun 7:00 pm CDT (00:00 UTC): wind from the south at 6 knots, visibility more than 6 miles, clear skies
• From Mon 12:00 pm CDT (17:00 UTC): wind from the south-southwest at 13 knots, gusting to 23, visibility more than 6 miles, scattered clouds at 20,000 feet
• From Mon 6:00 pm CDT (23:00 UTC): wind from the south-southwest at 12 knots, visibility more than 6 miles, a few clouds at 12,000 feet

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

No temporary flight restriction on or near this route right now.

Daylight

Sunset at ORD 6:15 pm CDT (23:15 UTC), at BFI 6:27 pm PDT (01:27 UTC) (civil twilight ends 6:58 pm PDT (01:58 UTC)). At 120 knots the arrival at BFI 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.