San Francisco International to Baltimore/Washington International Thurgood Marshall SFO → BWI

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 280 to 410 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 360 to 440 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.

• SIGMET E31E: thunderstorms (a convective SIGMET) up to 30,000 ft, until 3:55 am PDT (10:55 UTC). Near the route, at the destination end.
  as issued

  WSUS31 KKCI 120855
  MKCE WST 120855
  CONVECTIVE SIGMET 31E
  VALID UNTIL 1055Z
  MD VA DC
  FROM 20NNE DCA-30WSW SBY-RIC-CSN-20NNE DCA
  AREA TS MOV LTL. TOPS TO FL300.

• AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the first 160 nm of the route.
• AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 240 to 760 nm out.
• AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 240 to 780 nm out.
• AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 310 to 670 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 500 to 870 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 610 to 830 nm out.
• AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the route from 680 to 840 nm out.
• 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 980 to 1470 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, fog). Over the last 470 nm of the route.
• AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 1930 to 2070 nm out.
• AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 6,000 ft. Over the route from 1990 to 2110 nm out.
• AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 33,000 ft. Over the last 10 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 SFO.

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

Not fetched just now.

At BWI when you get there the forecast at the estimated arrival, 6:11 pm EDT (22:11 UTC)

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

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

• 6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local 8 nm from the route, at the destination end · a VIP movement · today · ZDC
• 4/9383 WASHINGTON, DC., USA 8 nm from the route, at the destination end · security · ZDC
• 6/8800 Baltimore, MD, Saturday, October 17, 2026 through Sunday, October 18, 2026 UTC 6 nm from the route, at the destination end · drones kept away from a public gathering · starts Saturday 17 October · ZDC

Daylight

Sunset at SFO 6:35 pm PDT (01:35 UTC), at BWI 6:32 pm EDT (22:32 UTC) (civil twilight ends 6:59 pm EDT (22:59 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.