Los Angeles International to Billings Logan International LAX → BIL

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

• SIGMET W18W: thunderstorms (a convective SIGMET) up to 30,000 ft, moving from the southwest at 20 knots, until 3:55 am PDT (10:55 UTC). Over the route from 288 to 476 nm out.
  as issued

  WSUS33 KKCI 120903 CCA
  MKCW WST 120903 COR
  CONVECTIVE SIGMET 18W
  VALID UNTIL 1055Z
  UT ID NV
  FROM 30E TWF-10W MLD-10SE ILC-50WSW ILC-60NE OAL-30E TWF
  AREA TS MOV FROM 24020KT. TOPS TO FL300.
  ***COR PTS***

• SIGMET W18W: thunderstorms (a convective SIGMET) up to 30,000 ft, moving from the southwest at 20 knots, until 3:55 am PDT (10:55 UTC). Over the route from 328 to 437 nm out.
  as issued

  WSUS33 KKCI 120855
  MKCW WST 120855
  CONVECTIVE SIGMET 18W
  VALID UNTIL 1055Z
  AZ UT NV
  FROM 20WNW BVL-30N BCE-60SSW BCE-50NNE LAS-60NNW ELY-20WNW BVL
  AREA TS MOV FROM 24020KT. TOPS TO FL300.

• AIRMET SIERRA 2E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 50 nm of the route.
• AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 60 to 476 nm out.
• AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 427 nm of the route.
• AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the last 407 nm of 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 last 248 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 LAX.

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

• B744 at 1,700 ft, 0 nm east, 2:24 am PDT (09:24 UTC): a few clouds above 1,700 ft, remarks: during the descent runway 25L lax. At the departure end, 0 nm east of the line.
  as filed, and in English

  LAX UA /OV KLAX/TM 0924/FL017/TP B744/SK FEW017/RM DURD RY25L LAX

  Report

  a routine report filed through LAX

  Where

  over KLAX

  Time

  09:24 UTC

  Height

  at 1,700 ft

  Aircraft

  B744

  Sky

  a few clouds from 1,700 ft

  Remarks

  during the descent runway 25L lax

At BIL when you get there the forecast at the estimated arrival, 8:22 am MDT (14:22 UTC)

Wind light and variable, visibility more than 6 miles, showers nearby, a few clouds at 300 feet, overcast at 800 feet IFR

The whole forecast for BIL

• From Mon 12:00 am MDT (06:00 UTC): wind from the north-northwest at 10 knots, visibility 5 miles, light rain snow ice pellets, mist, a few clouds at 300 feet, overcast at 1,000 feet
• At times between Mon 12:00 am MDT (06:00 UTC) and 4:00 am MDT (10:00 UTC): visibility 2 miles, light rain snow ice pellets, mist, a broken layer at 300 feet, overcast at 800 feet
• From Mon 7:00 am MDT (13:00 UTC): wind light and variable, visibility more than 6 miles, showers nearby, a few clouds at 300 feet, overcast at 800 feet
• From Mon 12:00 pm MDT (18:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 800 feet, a broken layer at 2,000 feet
• From Mon 8:00 pm MDT (02:00 UTC): wind from the east at 8 knots, visibility 5 miles, mist, a few clouds at 300 feet, overcast at 1,500 feet

The forecast for LAX, the departure

• From Mon 1:00 am PDT (08:00 UTC): wind from the southwest at 12 knots, visibility more than 6 miles, light rain, overcast at 2,500 feet
• From Mon 3:00 am PDT (10:00 UTC): wind from the west-southwest at 7 knots, visibility more than 6 miles, a broken layer at 3,000 feet
• At times between Mon 3:00 am PDT (10:00 UTC) and 7:00 am PDT (14:00 UTC): visibility 5 miles, light rain, overcast at 2,500 feet
• From Mon 10:00 am PDT (17:00 UTC): wind from the west-southwest at 15 knots, visibility more than 6 miles, a broken layer at 3,500 feet
• From Mon 6:00 pm PDT (01:00 UTC): wind from the west at 10 knots, visibility more than 6 miles, scattered clouds at 4,000 feet

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

• 4/3635 DISNEYLAND THEME PARK, ANAHEIM,, CA 23 nm from the route, at the departure end · security · ZLA

Daylight

Sunset at LAX 6:22 pm PDT (01:22 UTC), at BIL 6:32 pm MDT (00:32 UTC) (civil twilight ends 7:02 pm MDT (01:02 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.