Hartsfield/Jackson Atlanta International to Billings Logan International ATL → BIL

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 2:55 am EDT (06:55 UTC). Over the route from 1105 to 1115 nm out.
  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 5W: moderate turbulence below 18,000 ft (due to mountain wave) up to 10,000 ft. Near the route, at the departure end.
• 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 route from 70 to 169 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 498 to 956 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 438 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 1085 to 1244 nm out.
• AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the route from 1095 to 1234 nm out.
• AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 1155 to 1284 nm out.
• AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the last 139 nm of the route.
• AIRMET ZULU 2C: moderate icing up to 23,000 ft. Near the route, at the destination end.
• AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Near the route, at the destination end.

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 ATL.

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 BIL when you get there the forecast at the estimated arrival, 10:39 am MDT (16:39 UTC)

Wind from the north-northwest at 5 knots, visibility 6 miles, mist, showers nearby, scattered clouds at 300 feet, a broken layer at 700 feet and more above IFR

The whole forecast for BIL

• From Sun 8:00 pm MDT (02:00 UTC): wind from the north-northeast at 11 knots, visibility 3 miles, light snow, mist, overcast at 500 feet
• From Sun 9:00 pm MDT (03:00 UTC): wind from the north at 8 knots, visibility 2 miles, light snow, mist, freezing fog, a broken layer at 500 feet
• From Mon 8:00 am MDT (14:00 UTC): wind from the north-northwest at 5 knots, visibility 6 miles, mist, showers nearby, scattered clouds at 300 feet, a broken layer at 700 feet and more above
• From Mon 3:00 pm MDT (21:00 UTC): wind from the northeast at 6 knots, visibility 6 miles, mist, overcast at 1,500 feet

The forecast for ATL, the departure

• From Mon 12:00 am EDT (04:00 UTC): wind from the west-northwest at 6 knots, visibility more than 6 miles, a few clouds at 25,000 feet
• From Mon 12:00 pm EDT (16:00 UTC): wind from the northwest at 10 knots, gusting to 20, visibility more than 6 miles, clear skies
• From Mon 5:00 pm EDT (21:00 UTC): wind from the northwest at 7 knots, visibility more than 6 miles, clear skies

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 ATL 7:07 pm EDT (23:07 UTC), at BIL 6:33 pm MDT (00:33 UTC) (civil twilight ends 7:03 pm MDT (01:03 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.