Hartsfield/Jackson Atlanta International to Boeing Fld/King County International ATL → BFI

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

• SIGMET 2C: thunderstorms (a convective SIGMET) up to 31,000 ft, moving from the southwest at 40 knots, until 12:55 am EDT (04:55 UTC). Near the route, 1156 nm along the route.
  as issued

  WSUS32 KKCI 120255
  MKCC WST 120255
  CONVECTIVE SIGMET 2C
  VALID UNTIL 0455Z
  NE CO WY
  FROM 40SE CZI-30WNW BFF-30SSE LAR-70NW LAR-40SE CZI
  AREA TS MOV FROM 22040KT. TOPS TO FL310.

• AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Near the route, at the departure end.
• AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 80 to 140 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). Over the route from 588 to 807 nm out.
• AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 996 to 1305 nm out.
• AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 1116 to 1405 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 1166 to 1325 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 1196 to 1535 nm out.
• AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1196 to 1674 nm out.
• AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 1236 to 1405 nm out.
• AIRMET ZULU 2C: moderate icing up to 20,000 ft. Over the route from 1415 to 1834 nm out.
• AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 1445 to 1644 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 ATL.

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, 12:46 pm PDT (19:46 UTC)

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

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 ATL 7:07 pm EDT (23:07 UTC), at BFI 6:27 pm PDT (01:27 UTC) (civil twilight ends 6:58 pm PDT (01:58 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.