St. Louis Lambert International to Ontario International STL → ONT

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

• AIRMET TANGO 2W: 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 70 to 506 nm out.
• 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 635 to 1072 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 665 to 735 nm out.
• AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the route from 685 to 884 nm out.
• AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 993 to 1152 nm out.
• AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the last 318 nm of the route.
• AIRMET SIERRA 2E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 1033 to 1142 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). Near the route, 1072 nm along the route.
• AIRMET SIERRA 2E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 40 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 STL.

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

• urgent BE20 at 500 ft, 41 nm south, 4:34 am CDT (09:34 UTC): remarks: low-level wind shear 500FT a 10-knot loss of airspeed zkc fd dl. 506 nm along the route, 41 nm south of the line.
  as filed, and in English

  LBL UUA /OV LBL/TM 0934/FL005/TP BE20/RM LLWS 500FT +/-10KT ZKC FD DL

  Report

  an urgent report filed through LBL

  Where

  over LBL

  Time

  09:34 UTC

  Height

  at 500 ft

  Aircraft

  BE20

  Remarks

  low-level wind shear 500FT a 10-knot loss of airspeed zkc fd dl

• CRJ7 at 28,000 ft, 8 nm southeast, 6:25 am CDT (11:25 UTC): light turbulence, remarks: zkc fd dl. 437 nm along the route, 8 nm southeast of the line.
  as filed, and in English

  DDC UA /OV DDC090024/TM 1125/FL280/TP CRJ7/TB LGT/RM ZKC FD DL

  Report

  a routine report filed through DDC

  Where

  24 nm east (090°) of DDC

  Time

  11:25 UTC

  Height

  at 28,000 ft

  Aircraft

  CRJ7

  Turbulence

  light

  Remarks

  zkc fd dl

• A333 descending, 0 nm southwest, 6:05 am CDT (11:05 UTC): overcast from 1,500 ft to 7,000 ft, remarks: during the descent runway 26R. At the destination end, 0 nm southwest of the line.
  as filed, and in English

  ONT UA /OV ONT080/TM 1105/FLUNKN/TP A333/SK OVC015 - TOP070/RM DURD RY26R

  Report

  a routine report filed through ONT

  Where

  ONT080

  Time

  11:05 UTC

  Height

  height not given

  Aircraft

  A333

  Sky

  overcast from 1,500 ft, tops 7,000 ft

  Remarks

  during the descent runway 26R

• B744 at 1,700 ft, 41 nm west, 4:24 am CDT (09:24 UTC): a few clouds above 1,700 ft, remarks: during the descent runway 25L lax. At the destination end, 41 nm west 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 ONT when you get there the forecast at the estimated arrival, 6:16 pm PDT (01:16 UTC)

Wind from the west-southwest at 11 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, a broken layer at 3,500 feet VFR

The whole forecast for ONT

• From Mon 5:00 am PDT (12:00 UTC): wind light and variable, visibility more than 6 miles, light rain showers, scattered clouds at 2,000 feet, a broken layer at 3,000 feet
• At times between Mon 5:00 am PDT (12:00 UTC) and 9:00 am PDT (16:00 UTC): visibility 5 miles, mist, a broken layer at 1,800 feet
• From Mon 9:00 am PDT (16:00 UTC): wind from the southwest at 5 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, a broken layer at 3,500 feet
• From Mon 1:00 pm PDT (20:00 UTC): wind from the west-southwest at 11 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, a broken layer at 3,500 feet
• From Mon 8:00 pm PDT (03:00 UTC): wind from the west at 8 knots, visibility more than 6 miles, scattered clouds at 3,000 feet, a broken layer at 4,000 feet
• From Mon 11:00 pm PDT (06:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 3,000 feet, scattered clouds at 4,000 feet

The forecast for STL, the departure

• From Mon 7:00 am CDT (12:00 UTC): wind from the southwest at 6 knots, visibility more than 6 miles, a few clouds at 25,000 feet
• From Mon 10:00 am CDT (15:00 UTC): wind from the southwest at 12 knots, gusting to 20, visibility more than 6 miles, clear skies

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

• 6/8891 Bullhead City, AZ, Wednesday, October 14, 2026 Local 4 nm from the route, 1182 nm along the route · a VIP movement · starts Wednesday 14 October · ZLA
• 4/3635 DISNEYLAND THEME PARK, ANAHEIM,, CA 19 nm from the route, at the destination end · security · ZLA

Daylight

Sunset at STL 6:27 pm CDT (23:27 UTC), at ONT 6:18 pm PDT (01:18 UTC) (civil twilight ends 6:44 pm PDT (01:44 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.