Idaho Falls Regional to Casper/Natrona County International IDA → CPR
248 nautical miles (285 statute miles) east on a straight line, true course 097°, about 085° magnetic at the departure end (variation 12E). At 120 knots that is 1 h 27 min at the quickest height in today's winds (39,000 ft, a 51-knot tailwind), arriving about 9:37 pm MDT (03:37 UTC), after sunset at the destination. Right now IDA is IFR, wind from the southeast (130°) at 3 knots; CPR is VFR, wind from the northwest (310°) at 7 knots. 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
- SIGMET 8W: thunderstorms (a convective SIGMET) up to 35,000 ft, moving from the southwest at 40 knots, until 9:55 pm MDT (03:55 UTC). Over the last 60 nm of the route.
as issued
WSUS33 KKCI 120155 MKCW WST 120155 CONVECTIVE SIGMET 8W VALID UNTIL 0355Z CO MT WY FROM 40N SHR-60WNW RAP-20ENE CYS-30SW CYS-10NW BOY-40N SHR AREA TS MOV FROM 22040KT. TOPS TO FL350.
- 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 first 139 nm of the route.
- AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the first 218 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 first 218 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 218 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 last 198 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
- urgent CRJ2 at 7,000 ft, 2 nm northeast, 7:04 pm MDT (01:04 UTC): moderate turbulence, remarks: low-level wind shear dept runway 03 gain/loss unknown. At the destination end, 2 nm northeast of the line.
as filed, and in English
CPR UUA /OV CPR035002/TM 0104/FL070/TP CRJ2/TB CONT MOD TURB/RM LLWS DEPT RY03 GAIN/LOSS UNKN
- Report
- an urgent report filed through CPR
- Where
- 2 nm northeast (035°) of CPR
- Time
- 01:04 UTC
- Height
- at 7,000 ft
- Aircraft
- CRJ2
- Turbulence
- continuous moderate turbulence
- Remarks
- low-level wind shear dept runway 03 gain/loss unknown
- S22T at 15,000 ft, 47 nm north, 7:47 pm MDT (01:47 UTC): moderate rime icing above 15,000 ft, -5 °C. 79 nm along the route, 47 nm north of the line.
as filed, and in English
JAC UA /OV DNW010020/TM 0147/FL150/TP S22T/TA M05/IC MOD RIME 150 /ZLC
- Report
- a routine report filed through JAC
- Where
- 20 nm north (010°) of DNW
- Time
- 01:47 UTC
- Height
- at 15,000 ft
- Aircraft
- S22T
- Temperature
- −5 °C
- Icing
- moderate rime at 15,000 ft zlc
- PC12 at 15,000 ft, 10 nm southwest, 5:47 pm MDT (23:47 UTC): light rime icing above 15,000 ft. 50 nm along the route, 10 nm southwest of the line.
as filed, and in English
JAC UA /OV JAC200025/TM 2347/FL150/TP PC12/IC LGT RIME 150 /ZLC
- Report
- a routine report filed through JAC
- Where
- 25 nm south (200°) of JAC
- Time
- 23:47 UTC
- Height
- at 15,000 ft
- Aircraft
- PC12
- Icing
- light rime at 15,000 ft zlc
- A320 descending, 14 nm north, 6:54 pm MDT (00:54 UTC): overcast above 7,500 ft, remarks: braking action good during the descent runway 19. 60 nm along the route, 14 nm north of the line.
as filed, and in English
JAC UA /OV JAC/TM 0054/FLUNKN/TP A320/SK OVC075/RM BRAKING ACTION GOOD DURD RY19
- Report
- a routine report filed through JAC
- Where
- over JAC
- Time
- 00:54 UTC
- Height
- height not given
- Aircraft
- A320
- Sky
- overcast from 7,500 ft
- Remarks
- braking action good during the descent runway 19
- CRJ2 at 9,000 ft, 12 nm south, 6:35 pm MDT (00:35 UTC): light chop turbulence, vmc, remarks: occasional moderate turbulence at at 15,000 ft. At the destination end, 12 nm south of the line.
as filed, and in English
CPR UA /OV CPR215015/TM 0035/FL090/TP CRJ2/WX VMC/TB LGT CHOP/RM OCNL MOD TURB AT 150
- Report
- a routine report filed through CPR
- Where
- 15 nm southwest (215°) of CPR
- Time
- 00:35 UTC
- Height
- at 9,000 ft
- Aircraft
- CRJ2
- Weather
- visual conditions
- Turbulence
- light chop
- Remarks
- occasional moderate turbulence at at 15,000 ft
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, LND). 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 | 180° at 26 kt | +2 kt | 10 °C | 118 kt | 2 h 06 min | 10:16 pm MDT (04:16 UTC) |
| 9,500 ft | 190° at 29 kt | +1 kt | 7 °C | 119 kt | 2 h 05 min | 10:15 pm MDT (04:15 UTC) |
| 11,500 ft | 190° at 40 kt | −2 kt | 3 °C | 122 kt | 2 h 02 min | 10:12 pm MDT (04:12 UTC) |
| 13,500 ft | 200° at 46 kt | −7 kt | -1 °C | 127 kt | 1 h 57 min | 10:07 pm MDT (04:07 UTC) |
| 15,500 ft | 200° at 51 kt | −13 kt | -5 °C | 133 kt | 1 h 52 min | 10:02 pm MDT (04:02 UTC) |
| 17,500 ft | 210° at 57 kt | −18 kt | -8 °C | 138 kt | 1 h 48 min | 9:58 pm MDT (03:58 UTC) |
| 18,000 ft FL180 | 210° at 58 kt | −20 kt | -9 °C | 140 kt | 1 h 46 min | 9:56 pm MDT (03:56 UTC) |
| 24,000 ft FL240 | 200° at 50 kt | −10 kt | -21 °C | 130 kt | 1 h 54 min | 10:04 pm MDT (04:04 UTC) |
| 30,000 ft FL300 | 190° at 46 kt | −4 kt | -34 °C | 124 kt | 2 h | 10:10 pm MDT (04:10 UTC) |
| 34,000 ft FL340 | 230° at 59 kt | −38 kt | -39 °C | 158 kt | 1 h 34 min | 9:44 pm MDT (03:44 UTC) |
| 39,000 ft FL390 | 240° at 66 kt | −51 kt | -46 °C | 171 kt | 1 h 27 min | 9:37 pm MDT (03:37 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; 58 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° | |
| LND | used from 50 nm out; 79 nm from the line | 180/33 10° | 190/50 3° | 210/59 -9° | 200/50 -21° | 190/41 -34° | 230/55 -39° | 240/65 -47° |
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 | IFR Sky: overcast at 900 feet Weather: light rain | from the southeast (130°) at 3 knots | 10+ mi | 900 ft | 4,743 ft | 7:53 pm MDT (01:53 UTC) |
| DIJ Driggs, ID | 40 nm out, 19 nm north of the line | VFR Sky: a few clouds at 2,200 feet, a broken layer at 3,800 feet, overcast at 4,800 feet Weather: light rain | from the north-northwest (330°) at 9 knots | 7 mi | 3,800 ft | 6,257 ft | 01:56 UTC |
| JAC Jackson, WY | 60 nm out, 13 nm north of the line, tower | marginal VFR Sky: a broken layer at 2,200 feet, overcast at 3,100 feet Weather: heavy rain, mist | variable at 4 knots | 4 mi | 2,200 ft | 6,451 ft | 02:03 UTC |
| DUB Dubois, WY | 99 nm out, 16 nm north of the line | IFR Sky: overcast at 500 feet | from the southeast (130°) at 15 knots, gusting to 25 | 10+ mi | 500 ft | 7,298 ft | 01:55 UTC |
| RIW Riverton, WY | 159 nm out, 6 nm south of the line | marginal VFR Sky: a broken layer at 1,400 feet | from the northeast (040°) at 7 knots | 10+ mi | 1,400 ft | 5,516 ft | 01:53 UTC |
| CPR Casper, WY | destination | VFR Sky: a few clouds at 11,000 feet | from the northwest (310°) at 7 knots | 10+ mi | none | 5,344 ft | 7:53 pm MDT (01:53 UTC) |
The highest airport on this list sits at 7,298 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At CPR when you get there the forecast at the estimated arrival, 9:37 pm MDT (03:37 UTC)
Wind from the east-northeast at 12 knots, gusting to 18, visibility more than 6 miles, scattered clouds at 4,000 feet, overcast at 8,000 feet VFR
At times between Sun 6:00 pm MDT (00:00 UTC) and 10:00 pm MDT (04:00 UTC): visibility 5 miles, light rain, a broken layer at 3,000 feet marginal VFR
The whole forecast for CPR
- From Sun 6:00 pm MDT (00:00 UTC): wind from the east-northeast at 12 knots, gusting to 18, visibility more than 6 miles, scattered clouds at 4,000 feet, overcast at 8,000 feet
- At times between Sun 6:00 pm MDT (00:00 UTC) and 10:00 pm MDT (04:00 UTC): visibility 5 miles, light rain, a broken layer at 3,000 feet
- From Sun 10:00 pm MDT (04:00 UTC): wind from the south-southwest at 12 knots, gusting to 22, visibility more than 6 miles, a broken layer at 10,000 feet
- 30% chance between Sun 10:00 pm MDT (04:00 UTC) and 4:00 am MDT (10:00 UTC): visibility 5 miles, light rain, a broken layer at 3,000 feet
- From Mon 12:00 pm MDT (18:00 UTC): wind from the west at 10 knots, visibility more than 6 miles, scattered clouds at 5,000 feet, a broken layer at 15,000 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 CPR 6:28 pm MDT (00:28 UTC) (civil twilight ends 6:56 pm MDT (00:56 UTC)). At 120 knots the arrival at CPR is after sunset there (6:30 pm MDT (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.
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, Casper/Natrona County International.