Idaho Falls Regional to Bert Mooney Airport IDA → BTM
148 nautical miles (170 statute miles) north on a straight line, true course 353°, about 341° magnetic at the departure end (variation 12E). At 120 knots that is 51 min at the quickest height in today's winds (34,000 ft, a 54-knot tailwind), arriving about 3:51 am MDT (09:51 UTC), after sunset at the destination. Right now IDA is marginal VFR, wind calm; BTM is marginal VFR, 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: 1 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
- 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 2C: moderate icing up to 23,000 ft. Over the first 30 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the whole route.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 20 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the last 0 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 IDA.
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.
Winds aloft along the route, and the time en route the forecast for use 08:00–15:00 UTC · at 120 knots true airspeed
The westbound cruising heights for this course (VFR: even 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 |
|---|---|---|---|---|---|---|
| 8,500 ft | 170° at 11 kt | −11 kt | -4 °C | 131 kt | 1 h 08 min | 4:08 am MDT (10:08 UTC) |
| 10,500 ft | 190° at 18 kt | −17 kt | -3 °C | 137 kt | 1 h 05 min | 4:05 am MDT (10:05 UTC) |
| 12,500 ft | 200° at 25 kt | −21 kt | -5 °C | 141 kt | 1 h 03 min | 4:03 am MDT (10:03 UTC) |
| 14,500 ft | 210° at 26 kt | −22 kt | -10 °C | 142 kt | 1 h 03 min | 4:03 am MDT (10:03 UTC) |
| 16,500 ft | 210° at 28 kt | −22 kt | -14 °C | 142 kt | 1 h 03 min | 4:03 am MDT (10:03 UTC) |
| 18,000 ft FL180 | 210° at 29 kt | −23 kt | -18 °C | 143 kt | 1 h 02 min | 4:02 am MDT (10:02 UTC) |
| 24,000 ft FL240 | 210° at 41 kt | −33 kt | -28 °C | 153 kt | 58 min | 3:58 am MDT (09:58 UTC) |
| 30,000 ft FL300 | 210° at 65 kt | −52 kt | -32 °C | 172 kt | 52 min | 3:52 am MDT (09:52 UTC) |
| 34,000 ft FL340 | 210° at 70 kt | −54 kt | -36 °C | 174 kt | 51 min | 3:51 am MDT (09:51 UTC) |
| 39,000 ft FL390 | 210° at 64 kt | −49 kt | -44 °C | 169 kt | 53 min | 3:53 am MDT (09:53 UTC) |
Based on data from the 12th at 06:00 UTC; valid on the 12th at 12:00 UTC for use 08:00 to 15:00 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; 64 nm from the line | 070/8 | 150/19 1° | 180/32 -4° | 210/44 -17° | 210/37 -28° | 210/74 -31° | 220/68 -35° | 220/60 -43° | |
| DLN | used from 49 nm out; 33 nm from the line | 190/10 -4° | 220/23 -4° | 210/21 -18° | 210/43 -28° | 210/60 -33° | 210/72 -37° | 210/67 -44° |
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: overcast at 1,400 feet | calm | 10+ mi | 1,400 ft | 4,743 ft | 2:53 am MDT (08:53 UTC) |
| RXE Rexburg, ID | 20 nm out, 14 nm east of the line | marginal VFR Sky: overcast at 1,000 feet | from the northeast (040°) at 5 knots | 10+ mi | 1,000 ft | 4,862 ft | 08:53 UTC |
| RVF Twin Bridges, MT | 118 nm out, 6 nm northeast of the line | marginal VFR Sky: scattered clouds at 2,000 feet, overcast at 2,700 feet | from the north-northeast (020°) at 14 knots | 10+ mi | 2,700 ft | 4,788 ft | 08:55 UTC |
| BTM Butte, MT | destination | marginal VFR Sky: overcast at 1,200 feet | calm | 8 mi | 1,200 ft | 5,550 ft | 2:53 am MDT (08:53 UTC) |
The highest airport on this list sits at 5,550 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At BTM when you get there the forecast at the estimated arrival, 3:51 am MDT (09:51 UTC)
Wind from the north-northwest at 3 knots, visibility 4 miles, light snow, mist, a broken layer at 1,000 feet, overcast at 3,500 feet marginal VFR
The whole forecast for BTM
- From Mon 1:00 am MDT (07:00 UTC): wind from the north-northwest at 3 knots, visibility 4 miles, light snow, mist, a broken layer at 1,000 feet, overcast at 3,500 feet
- From Mon 4:00 am MDT (10:00 UTC): wind calm, visibility 4 miles, mist, overcast at 700 feet
- From Mon 6:00 am MDT (12:00 UTC): wind from the southeast at 2 knots, visibility 4 miles, mist, overcast at 1,500 feet
- From Mon 11:00 am MDT (17:00 UTC): wind from the east-southeast at 2 knots, visibility more than 6 miles, overcast at 5,000 feet
The forecast for IDA, the departure
- From Mon 1:00 am MDT (07:00 UTC): wind light and variable, visibility 6 miles, mist, showers nearby, scattered clouds at 900 feet, a broken layer at 1,500 feet and more above
- From Mon 5:00 am MDT (11:00 UTC): wind light and variable, visibility 5 miles, light rain, mist, a broken layer at 600 feet, overcast at 1,500 feet
- From Mon 12:00 pm MDT (18:00 UTC): wind from the southwest at 11 knots, visibility 6 miles, light rain showers, mist, scattered clouds at 1,500 feet, overcast at 2,500 feet
- From Mon 10:00 pm MDT (04:00 UTC): wind light and variable, visibility 6 miles, mist, showers nearby, scattered clouds at 2,500 feet, a broken layer at 3,500 feet and more above
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 6:48 pm MDT (00:48 UTC), at BTM 6:47 pm MDT (00:47 UTC) (civil twilight ends 7:17 pm MDT (01:17 UTC)). At 120 knots the arrival at BTM is before sunrise there (7:42 am MDT (13:42 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, Bert Mooney Airport.