Idaho Falls Regional to Bozeman Yellowstone International IDA → BZN
141 nautical miles (163 statute miles) north on a straight line, true course 016°, about 004° magnetic at the departure end (variation 12E). At 120 knots that is 43 min at the quickest height in today's winds (30,000 ft, a 76-knot tailwind), arriving about 7:31 pm MDT (01:31 UTC), after sunset at the destination. Right now IDA is marginal VFR, wind from the north-northwest (340°) at 13 knots; BZN is low IFR, wind calm. For planning, not a briefing: the legal preflight briefing comes from Flight Service (1-800-WX-BRIEF) or the FAA's own tools. Airlines fly this pair: 2 flights in the DOT's last twelve reported months, the route's page.
The route the straight line, the warnings crossed, restrictions, pilot reports and the airports along the way · click a mark for its words
Green, blue, red and purple airport dots are the flying conditions reported there now (VFR, marginal VFR, IFR, low IFR); grey means no report. Red areas are SIGMETs, orange areas AIRMETs, hatched red areas temporary flight restrictions. Map tiles: OpenFreeMap, data © OpenStreetMap contributors.
Warnings the route crosses SIGMETs and AIRMETs whose area the line passes through or comes within 25 nm of
- SIGMET W71W: thunderstorms (a convective SIGMET) up to 27,000 ft, moving from the south at 40 knots, until 7:55 pm MDT (01:55 UTC). Near the route, at the departure end.
as issued
WSUS33 KKCI 112355 MKCW WST 112355 CONVECTIVE SIGMET 71W VALID UNTIL 0155Z WY UT ID FROM 40S DBS-40WNW BPI-30WSW MTU-30SSW DTA-30SE TWF-40S DBS AREA EMBD TS MOV FROM 20040KT. TOPS TO FL270.
- 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 whole route.
- AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the first 75 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the whole route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the whole route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 75 to 123 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). Near the route, 113 nm along 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 IDA.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
Not fetched just now.
Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 UTC · at 120 knots true airspeed
The eastbound cruising heights for this course (VFR: odd thousands plus 500 ft; above 18,000 ft the forecast levels), with the wind averaged along the line from the 2 forecast points nearest it (PIH, DLN). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 7,500 ft | 070° at 3 kt | +2 kt | -3 °C | 118 kt | 1 h 12 min | 8:00 pm MDT (02:00 UTC) |
| 9,500 ft | 120° at 2 kt | 0 | -2 °C | 120 kt | 1 h 10 min | 7:58 pm MDT (01:58 UTC) |
| 11,500 ft | 190° at 8 kt | −8 kt | -3 °C | 128 kt | 1 h 06 min | 7:54 pm MDT (01:54 UTC) |
| 13,500 ft | 190° at 16 kt | −16 kt | -5 °C | 136 kt | 1 h 02 min | 7:50 pm MDT (01:50 UTC) |
| 15,500 ft | 190° at 24 kt | −24 kt | -8 °C | 144 kt | 59 min | 7:47 pm MDT (01:47 UTC) |
| 17,500 ft | 190° at 32 kt | −31 kt | -12 °C | 151 kt | 56 min | 7:44 pm MDT (01:44 UTC) |
| 18,000 ft FL180 | 190° at 33 kt | −33 kt | -13 °C | 153 kt | 55 min | 7:43 pm MDT (01:43 UTC) |
| 24,000 ft FL240 | 200° at 56 kt | −56 kt | -22 °C | 176 kt | 48 min | 7:36 pm MDT (01:36 UTC) |
| 30,000 ft FL300 | 200° at 76 kt | −76 kt | -35 °C | 196 kt | 43 min | 7:31 pm MDT (01:31 UTC) |
| 34,000 ft FL340 | 220° at 82 kt | −75 kt | -40 °C | 195 kt | 43 min | 7:31 pm MDT (01:31 UTC) |
| 39,000 ft FL390 | 230° at 78 kt | −65 kt | -45 °C | 185 kt | 46 min | 7:34 pm MDT (01:34 UTC) |
Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 UTC; temperatures above 24,000 ft are below zero. Heights are above sea level; a height is left out when the forecast has no wind for it over most of the line (the ground is higher). Ground speed is the airspeed less the headwind; the time en route is for the straight line and ignores climb, descent and routing around weather.
The forecast points as issued
| Point | From | 3,000 | 6,000 | 9,000 | 12,000 | 18,000 | 24,000 | 30,000 | 34,000 | 39,000 |
|---|---|---|---|---|---|---|---|---|---|---|
| PIH | used from 0 nm out; 66 nm from the line | 270/10 | 270/13 1° | 210/16 -2° | 200/56 -11° | 200/51 -23° | 200/68 -33° | 220/77 -37° | 230/73 -44° | |
| DLN | used from 47 nm out; 54 nm from the line | 080/10 -3° | 180/8 -3° | 180/23 -14° | 200/58 -22° | 200/80 -36° | 220/85 -41° | 230/81 -45° |
The weather now: both ends and the airports along the way public airports with a weather report within 25 nm of the line, one for each stretch
| Airport | Where | Conditions | Wind | Visibility | Ceiling | Elevation | Reported |
|---|---|---|---|---|---|---|---|
| IDA Idaho Falls, ID | departure | marginal VFR Sky: a few clouds at 700 feet, a broken layer at 3,300 feet, overcast at 4,000 feet Weather: rain, mist | from the north-northwest (340°) at 13 knots | 5 mi | 3,300 ft | 4,743 ft | 6:27 pm MDT (00:27 UTC) |
| RXE Rexburg, ID | 19 nm out, 6 nm east of the line | VFR Sky: a few clouds at 600 feet, a broken layer at 4,900 feet, overcast at 6,000 feet Weather: light rain, mist | from the north-northwest (340°) at 5 knots | 6 mi | 4,900 ft | 4,862 ft | 23:58 UTC |
| WYS West Yellowstone, MT | 75 nm out, 20 nm east of the line | IFR Sky: scattered clouds at 400 feet, overcast at 900 feet Weather: light rain, mist | from the north-northeast (020°) at 4 knots | 5 mi | 900 ft | 6,649 ft | 00:35 UTC |
| EKS Ennis, MT | 104 nm out, 12 nm northwest of the line | low IFR Sky: a broken layer at 400 feet, overcast at 1,600 feet Weather: light snow, mist | from the north (350°) at 17 knots, gusting to 23 | 1.25 mi | 400 ft | 5,432 ft | 00:35 UTC |
| BZN Bozeman, MT | destination | low IFR Sky: scattered clouds at 200 feet, scattered clouds at 700 feet, overcast at 1,100 feet Weather: snow, fog | calm | 0.5 mi | 1,100 ft | 4,473 ft | 5:56 pm MDT (23:56 UTC) |
The highest airport on this list sits at 6,649 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At BZN when you get there the forecast at the estimated arrival, 7:31 pm MDT (01:31 UTC)
Wind light and variable, visibility ½ mile, snow, fog, overcast at 300 feet low IFR
The whole forecast for BZN
- From Sun 6:00 pm MDT (00:00 UTC): wind light and variable, visibility ½ mile, snow, fog, overcast at 300 feet
- At times between Sun 9:00 pm MDT (03:00 UTC) and 12:00 am MDT (06:00 UTC): visibility 2 miles, light snow, mist, scattered clouds at 300 feet, overcast at 1,200 feet
- From Mon 12:00 am MDT (06:00 UTC): wind from the west at 7 knots, visibility 2 miles, light snow, mist, overcast at 800 feet
- At times between Mon 12:00 am MDT (06:00 UTC) and 3:00 am MDT (09:00 UTC): visibility 6 miles, light snow, mist, overcast at 800 feet
- From Mon 3:00 am MDT (09:00 UTC): wind light and variable, visibility more than 6 miles, overcast at 800 feet
- From Mon 12:00 pm MDT (18:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 800 feet, overcast at 2,000 feet
- From Mon 5:00 pm MDT (23:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 1,500 feet, a broken layer at 11,000 feet
The forecast for IDA, the departure
- From Sun 6:00 pm MDT (00:00 UTC): wind light and variable, visibility 3 miles, rain, mist, a broken layer at 700 feet, overcast at 1,500 feet
- From Sun 8:00 pm MDT (02:00 UTC): wind light and variable, visibility 6 miles, light rain showers, mist, scattered clouds at 700 feet, overcast at 1,500 feet
- From Mon 6:00 am MDT (12:00 UTC): wind light and variable, visibility 5 miles, light rain, mist, scattered clouds at 1,000 feet, overcast at 1,500 feet
- From Mon 12:00 pm MDT (18:00 UTC): wind from the southwest at 6 knots, visibility 6 miles, light rain showers, mist, scattered clouds at 1,500 feet, overcast at 2,500 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 IDA 6:50 pm MDT (00:50 UTC), at BZN 6:44 pm MDT (00:44 UTC) (civil twilight ends 7:14 pm MDT (01:14 UTC)). At 120 knots the arrival at BZN is after sunset there (6:46 pm MDT (00:46 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.
Radar and forecast charts for the regions crossed government pictures, the latest each time the page loads
Sources: the Aviation Weather Center's data service (SIGMETs, AIRMETs, graphical AIRMETs, pilot reports, winds and temperatures aloft, observations and terminal forecasts), the National Weather Service radar, the Weather Prediction Center's charts, the FAA's temporary flight restriction list and shapes, and the FAA's airport file for the positions, elevations and magnetic variation. Fetched when the page is viewed and kept a few minutes. Each leg is the straight line between its two airports; airways, terrain and airspace are not considered. The airports in detail: Idaho Falls Regional, Bozeman Yellowstone International.