Baltimore/Washington International Thurgood Marshall to Ontario International BWI → ONT

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

• SIGMET E22E: thunderstorms (a convective SIGMET) up to 40,000 ft, moving from the southwest at 20 knots, until 3:55 am EDT (07:55 UTC). Over the first 80 nm of the route.
  as issued

  WSUS31 KKCI 120555
  MKCE WST 120555
  CONVECTIVE SIGMET 22E
  VALID UNTIL 0755Z
  NY NJ PA DE MD VA DC WV AND MA RI DE NJ NY CSTL WTRS
  FROM 40E HTO-80SSW ACK-100ESE SIE-30SW CSN-40SSE JST-40E HTO
  AREA EMBD TS MOV FROM 24020KT. TOPS TO FL400.

• SIGMET C10C: thunderstorms (a convective SIGMET) up to 34,000 ft, moving from the southwest at 40 knots, until 3:55 am EDT (07:55 UTC). Over the route from 1290 to 1410 nm out.
  as issued

  WSUS32 KKCI 120555
  MKCC WST 120555
  CONVECTIVE SIGMET 10C
  VALID UNTIL 0755Z
  CO NM
  FROM 20NNE PUB-40WSW LAA-30WSW CIM-50WSW ALS-50ESE HBU-20NNE PUB
  AREA TS MOV FROM 22040KT. TOPS TO FL340.

• 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 first 500 nm of the route.
• AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the first 110 nm of the route.
• AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 60 to 220 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 730 to 1250 nm out.
• AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 1240 to 1770 nm out.
• AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft. Over the route from 1280 to 1899 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 1330 to 1340 nm out.
• AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1590 to 1799 nm out.
• 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 1670 to 1710 nm out.
• AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. Over the last 120 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 BWI.

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

Not fetched just now.

At ONT when you get there the forecast at the estimated arrival, 7:18 pm PDT (02:18 UTC)

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

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

• 6/8800 Baltimore, MD, Saturday, October 17, 2026 through Sunday, October 18, 2026 UTC 6 nm from the route, at the departure end · drones kept away from a public gathering · starts Saturday 17 October · ZDC
• 4/9383 WASHINGTON, DC., USA 6 nm from the route, at the departure end · security · ZDC
• 6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local 4 nm from the route, at the departure end · a VIP movement · today · ZDC
• 6/8029 Cincinnati, OH, Friday, October 9, 2026 through Monday, October 12, 2026 Local 13 nm from the route, 370 nm along the route · a VIP movement · until 12 October · ZID
• 6/7634 CENTRALIA, MO, Monday, October 12, 2026 UTC 7 nm from the route, 720 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · today · ZKC
• 6/8891 Bullhead City, AZ, Wednesday, October 14, 2026 Local 1 nm from the route, 1819 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 BWI 6:32 pm EDT (22:32 UTC), at ONT 6:20 pm PDT (01:20 UTC) (civil twilight ends 6:45 pm PDT (01:45 UTC)). At 120 knots the arrival at ONT is after sunset there (6:20 pm PDT (01:20 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.