Boeing Fld/King County International to Purdue University Airport BFI → LAF

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

• SIGMET C11C: thunderstorms (a convective SIGMET) up to 31,000 ft, moving from the southwest at 40 knots, until 12:55 am PDT (07:55 UTC). Over the route from 806 to 836 nm out.
  as issued

  WSUS32 KKCI 120555
  MKCC WST 120555
  CONVECTIVE SIGMET 11C
  VALID UNTIL 0755Z
  SD WY
  FROM 60WNW DPR-20SSE DPR-40SSW RAP-60W RAP-60WNW DPR
  DMSHG AREA TS MOV FROM 22040KT. TOPS TO FL310.

• AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the first 179 nm of the route.
• AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 119 to 587 nm out.
• AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 239 to 557 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 269 to 1064 nm out.
• AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 269 to 458 nm out.
• AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 597 to 696 nm out.
• AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 657 to 706 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 716 to 746 nm out.
• AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Near the route, 726 nm along the route.
• 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 1174 to 1393 nm out.
• 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 last 0 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 BFI.

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

• B38M at 29,000 ft, 17 nm southwest, 9:52 pm PDT (04:52 UTC): no turbulence from 23,000 ft to 29,000 ft. At the destination end, 17 nm southwest of the line.
  as filed, and in English

  TIP UA /OV RBS/TM 0452/FL290/TP B38M/TB NEG 230-290

  Report

  a routine report filed through TIP

  Where

  over RBS

  Time

  04:52 UTC

  Height

  at 29,000 ft

  Aircraft

  B38M

  Turbulence

  no from 23,000 ft to 29,000 ft

At LAF when you get there the forecast at the estimated arrival, 12:17 pm EDT (16:17 UTC)

Wind from the south-southwest at 8 knots, visibility more than 6 miles, scattered clouds at 20,000 feet VFR

The whole forecast for LAF

• From Mon 2:00 am EDT (06:00 UTC): wind calm, visibility 3 miles, mist, shallow fog, a few clouds at 25,000 feet
• At times between Mon 2:00 am EDT (06:00 UTC) and 6:00 am EDT (10:00 UTC): visibility 1 mile, mist, shallow fog, overcast at 200 feet
• From Mon 8:00 am EDT (12:00 UTC): wind light and variable, visibility 6 miles, mist, shallow fog, a few clouds at 200 feet
• From Mon 10:00 am EDT (14:00 UTC): wind from the south-southwest at 8 knots, visibility more than 6 miles, scattered clouds at 20,000 feet
• From Mon 2:00 pm EDT (18:00 UTC): wind from the southwest at 11 knots, gusting to 19, visibility more than 6 miles, scattered clouds at 20,000 feet

The forecast for BFI, the departure

• From Sun 11:00 pm PDT (06:00 UTC): wind calm, visibility more than 6 miles, clear skies
• From Mon 3:00 am PDT (10:00 UTC): wind calm, 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
• From Mon 7:00 pm PDT (02:00 UTC): wind calm, visibility more than 6 miles, clear skies

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 BFI 6:27 pm PDT (01:27 UTC), at LAF 7:12 pm EDT (23:12 UTC) (civil twilight ends 7:40 pm EDT (23:40 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.