Washington Dulles International to Bismarck Municipal IAD → BIS

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

• SIGMET C17C: thunderstorms (a convective SIGMET) up to 36,000 ft, moving from the southwest at 40 knots, until 8:55 am EDT (12:55 UTC). Over the last 50 nm of the route.
  as issued

  WSUS32 KKCI 121055
  MKCC WST 121055
  CONVECTIVE SIGMET 17C
  VALID UNTIL 1255Z
  SD ND
  FROM 20NW BIS-60E BIS-20WNW PIR-20SW DPR-20NW BIS
  AREA TS MOV FROM 22040KT. TOPS TO FL360.

• 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 397 nm of 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). Near the route, at the departure end.
• AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 33,000 ft. Over the first 139 nm of the route.
• AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 6,000 ft. Over the first 99 nm of the route.
• AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 40 to 159 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 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 IAD.

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

Not fetched just now.

At BIS when you get there the forecast at the estimated arrival, 4:47 pm CDT (21:47 UTC)

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

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

• 4/9383 WASHINGTON, DC., USA 8 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
• 6/8829 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 25 nm from the route, 199 nm along the route · a VIP movement · today · ZOB
• 6/8587 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 5 nm from the route, 199 nm along the route · a VIP movement · today · ZOB
• 6/6656 ANOKA, MN, Monday, October 5, 2026 through Monday, October 19, 2026 Local 11 nm from the route, 804 nm along the route · security · until 19 October · ZMP

Daylight

Sunset at IAD 6:36 pm EDT (22:36 UTC), at BIS 6:59 pm CDT (23:59 UTC) (civil twilight ends 7:30 pm CDT (00:30 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.