Chicago O'Hare International to Yellowstone Regional ORD → COD

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

• SIGMET 8C: thunderstorms (a convective SIGMET) up to 32,000 ft, moving from the southwest at 40 knots, until 1:55 am CDT (06:55 UTC). Near the route, 725 nm along the route.
  as issued

  WSUS32 KKCI 120455
  MKCC WST 120455
  CONVECTIVE SIGMET 8C
  VALID UNTIL 0655Z
  NE SD WY
  FROM 50WNW RAP-20SSW RAP-60NW BFF-40ENE DDY-50WNW RAP
  DMSHG AREA TS MOV FROM 22040KT. TOPS TO FL320.

• 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 99 to 308 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 477 nm of the route.
• 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 685 to 884 nm out.
• AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the route from 715 to 913 nm out.
• AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 179 nm of the route.
• AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the last 139 nm of the route.
• AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 89 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 ORD.

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

No pilot reports within 50 nautical miles of the line in the last three hours.

At COD when you get there the forecast at the estimated arrival, 7:47 am MDT (13:47 UTC)

Wind from the north-northeast at 10 knots, visibility 6 miles, mist, a broken layer at 1,000 feet, overcast at 1,800 feet marginal VFR

The whole forecast for COD

• From Mon 12:00 am MDT (06:00 UTC): wind from the north-northeast at 10 knots, visibility 6 miles, light showers rain snow, mist, overcast at 1,000 feet
• From Mon 1:00 am MDT (07:00 UTC): wind from the north-northeast at 10 knots, visibility 6 miles, mist, a broken layer at 1,000 feet, overcast at 1,800 feet
• From Mon 12:00 pm MDT (18:00 UTC): wind from the northeast at 4 knots, visibility more than 6 miles, scattered clouds at 1,500 feet, overcast at 3,000 feet
• 30% chance between Mon 12:00 pm MDT (18:00 UTC) and 6:00 pm MDT (00:00 UTC): visibility 6 miles, light showers rain snow
• From Mon 6:00 pm MDT (00:00 UTC): wind from the east-northeast at 5 knots, visibility more than 6 miles, scattered clouds at 500 feet, a broken layer at 1,000 feet and more above

The forecast for ORD, the departure

• From Mon 1:00 am CDT (06:00 UTC): wind from the south at 5 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
• From Mon 12:00 pm CDT (17:00 UTC): wind from the south-southwest at 13 knots, gusting to 24, visibility more than 6 miles, a few clouds at 25,000 feet
• From Mon 6:00 pm CDT (23:00 UTC): wind from the southwest at 12 knots, visibility more than 6 miles, a few clouds at 12,000 feet

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

No temporary flight restriction on or near this route right now.

Daylight

Sunset at ORD 6:15 pm CDT (23:15 UTC), at COD 6:37 pm MDT (00:37 UTC) (civil twilight ends 7:06 pm MDT (01:06 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.