Mahlon Sweet Field to Casper/Natrona County International EUG → CPR
732 nautical miles (842 statute miles) east on a straight line, true course 090°, about 075° magnetic at the departure end (variation 15E). At 120 knots that is 4 h 51 min at the quickest height in today's winds (39,000 ft, a 31-knot tailwind), arriving about 4:43 am MDT (10:43 UTC), after sunset at the destination. Right now EUG is VFR, wind from the east (090°) at 3 knots; CPR is VFR, wind from the northwest (320°) at 6 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
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the first 198 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 109 to 188 nm out.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 277 to 435 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the last 415 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 316 to 702 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 route from 356 to 633 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 148 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the last 138 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 109 nm of the route.
- AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Near the route, 702 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 EUG.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- UAL737 at 31,000 ft, 5 nm northwest, 8:17 pm PDT (03:17 UTC): no turbulence, wind 358° at 94 knots. At the departure end, 5 nm northwest of the line.
as filed, and in English
ARP UAL737 4410N 12318W 0317 F310 358/094KT TB SMTH IC
- Report
- a routine report filed through ARP
- B737 at 10,000 ft, 9 nm north, 9:25 pm PDT (04:25 UTC): no icing, remarks: during the descent runway 5. 89 nm along the route, 9 nm north of the line.
as filed, and in English
RDM UA /OV RDM/TM 0425/FL100/TP B737/TA UNKN/IC NEG/RM DURD RWY 5
- Report
- a routine report filed through RDM
- Where
- over RDM
- Time
- 04:25 UTC
- Height
- at 10,000 ft
- Aircraft
- B737
- Temperature
- UNKN
- Icing
- none
- Remarks
- during the descent runway 5
- E175 at 6,300 ft, 17 nm south, 9:20 pm PDT (04:20 UTC): overcast above 6,300 ft, remarks: during the descent runway 31. 386 nm along the route, 17 nm south of the line.
as filed, and in English
SUN UA /OV KSUN/TM 0420/FL063/TP E175/SK OVC063-TOPUNKN/RM DURD RY31
- Report
- a routine report filed through SUN
- Where
- over KSUN
- Time
- 04:20 UTC
- Height
- at 6,300 ft
- Aircraft
- E175
- Sky
- overcast from 6,300 ft, tops unknown
- Remarks
- during the descent runway 31
- E175 at 5,900 ft, 17 nm south, 8:29 pm PDT (03:29 UTC): a broken layer above 5,900 ft, remarks: during the descent runway 31. 386 nm along the route, 17 nm south of the line.
as filed, and in English
SUN UA /OV KSUN/TM 0329/FL059/TP E175/SK BKN059-TOPUNKN/RM DURD RY31
- Report
- a routine report filed through SUN
- Where
- over KSUN
- Time
- 03:29 UTC
- Height
- at 5,900 ft
- Aircraft
- E175
- Sky
- a broken layer from 5,900 ft, tops unknown
- Remarks
- during the descent runway 31
- E175 at 5,700 ft, 17 nm south, 7:59 pm PDT (02:59 UTC): a broken layer above 5,700 ft, remarks: during the descent runway 31. 386 nm along the route, 17 nm south of the line.
as filed, and in English
SUN UA /OV KSUN/TM 0259/FL057/TP E175/SK BKN057-TOPUNKN/RM DURD RY31
- Report
- a routine report filed through SUN
- Where
- over KSUN
- Time
- 02:59 UTC
- Height
- at 5,700 ft
- Aircraft
- E175
- Sky
- a broken layer from 5,700 ft, tops unknown
- Remarks
- during the descent runway 31
- CRJ7 at 6,300 ft, 44 nm south, 8:27 pm PDT (03:27 UTC): overcast above 6,300 ft, remarks: during the descent. 465 nm along the route, 44 nm south of the line.
as filed, and in English
PIH UA /OV KPIH/TM 0327/FL063/TP CRJ7/SK OVC063-TOPUNKN/RM DURD
- Report
- a routine report filed through PIH
- Where
- over KPIH
- Time
- 03:27 UTC
- Height
- at 6,300 ft
- Aircraft
- CRJ7
- Sky
- overcast from 6,300 ft, tops unknown
- Remarks
- during the descent
Winds aloft along the route, and the time en route the forecast for use 02:00–09:00 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 4 forecast points nearest it (RDM, BOI, 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 |
|---|---|---|---|---|---|---|
| 5,500 ft | 020° at 6 kt | +2 kt | 0 °C | 118 kt | 6 h 12 min | 6:04 am MDT (12:04 UTC) |
| 7,500 ft | 260° at 1 kt | 0 | 0 °C | 120 kt | 6 h 06 min | 5:58 am MDT (11:58 UTC) |
| 9,500 ft | 270° at 3 kt | −2 kt | -2 °C | 122 kt | 6 h | 5:52 am MDT (11:52 UTC) |
| 11,500 ft | 250° at 8 kt | −6 kt | -5 °C | 126 kt | 5 h 49 min | 5:41 am MDT (11:41 UTC) |
| 13,500 ft | 240° at 12 kt | −9 kt | -9 °C | 129 kt | 5 h 40 min | 5:32 am MDT (11:32 UTC) |
| 15,500 ft | 230° at 16 kt | −10 kt | -12 °C | 130 kt | 5 h 38 min | 5:30 am MDT (11:30 UTC) |
| 17,500 ft | 230° at 20 kt | −12 kt | -15 °C | 132 kt | 5 h 33 min | 5:25 am MDT (11:25 UTC) |
| 18,000 ft FL180 | 230° at 20 kt | −13 kt | -16 °C | 133 kt | 5 h 30 min | 5:22 am MDT (11:22 UTC) |
| 24,000 ft FL240 | 240° at 25 kt | −19 kt | -26 °C | 139 kt | 5 h 16 min | 5:08 am MDT (11:08 UTC) |
| 30,000 ft FL300 | 240° at 30 kt | −23 kt | -31 °C | 143 kt | 5 h 07 min | 4:59 am MDT (10:59 UTC) |
| 34,000 ft FL340 | 230° at 41 kt | −27 kt | -35 °C | 147 kt | 4 h 59 min | 4:51 am MDT (10:51 UTC) |
| 39,000 ft FL390 | 230° at 45 kt | −31 kt | -42 °C | 151 kt | 4 h 51 min | 4:43 am MDT (10:43 UTC) |
Based on data from the 12th at 00:00 UTC; valid on the 12th at 06:00 UTC for use 02:00 to 09:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| RDM | used from 0 nm out; 65 nm from the line | 040/17 -1° | 030/31 -8° | 010/29 -12° | 010/61 -19° | 360/95 -25° | 360/82 -36° | 360/40 -37° | 310/19 -40° | |
| BOI | used from 198 nm out; 84 nm from the line | 300/7 2° | 280/5 -4° | 210/16 -9° | 210/60 -20° | 210/75 -29° | 210/63 -32° | 220/64 -32° | 220/54 -39° | |
| PIH | used from 395 nm out; 63 nm from the line | L/V | 240/13 1° | 240/15 -3° | 210/42 -15° | 200/70 -25° | 220/74 -29° | 220/71 -36° | 220/62 -43° | |
| LND | used from 544 nm out; 70 nm from the line | 200/23 6° | 220/31 1° | 220/39 -11° | 230/39 -23° | 220/51 -28° | 220/66 -37° | 230/68 -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 |
|---|---|---|---|---|---|---|---|
| EUG Eugene, OR | departure | VFR Sky: a few clouds at 9,500 feet | from the east (090°) at 3 knots | 10+ mi | none | 373 ft | 9:54 pm PDT (04:54 UTC) |
| RDM Redmond, OR | 89 nm out, 9 nm north of the line, tower | VFR Sky: overcast at 7,500 feet | calm | 10+ mi | 7,500 ft | 3,081 ft | 04:56 UTC |
| GCD John Day, OR | 178 nm out, 21 nm north of the line | VFR Sky: overcast at 3,500 feet | from the west-northwest (290°) at 6 knots | 10+ mi | 3,500 ft | 3,702 ft | 05:35 UTC |
| ONO Ontario, OR | 267 nm out, 3 nm north of the line | VFR Sky: overcast at 8,500 feet | from the northwest (320°) at 17 knots, gusting to 26 | 10+ mi | 8,500 ft | 2,193 ft | 04:53 UTC |
| BOI Boise, ID | 306 nm out, 21 nm south of the line, tower | VFR Sky: overcast at 8,000 feet | from the south (190°) at 4 knots | 10+ mi | 8,000 ft | 2,871 ft | 04:53 UTC |
| SUN Hailey, ID | 386 nm out, 17 nm south of the line, tower | marginal VFR Sky: overcast at 1,300 feet | from the south (170°) at 3 knots | 10+ mi | 1,300 ft | 5,319 ft | 05:35 UTC |
| IDA Idaho Falls, ID | 484 nm out, 5 nm south of the line, tower | marginal VFR Sky: overcast at 1,500 feet | from the north-northeast (030°) at 7 knots | 10+ mi | 1,500 ft | 4,743 ft | 04:53 UTC |
| JAC Jackson, WY | 544 nm out, 10 nm north of the line, tower | VFR Sky: a broken layer at 4,700 feet, overcast at 7,000 feet | from the south-southwest (200°) at 11 knots | 10+ mi | 4,700 ft | 6,451 ft | 04:56 UTC |
| RIW Riverton, WY | 643 nm out, 7 nm south of the line | VFR Sky: a few clouds at 200 feet | from the north-northwest (340°) at 7 knots | 10+ mi | none | 5,516 ft | 04:53 UTC |
| CPR Casper, WY | destination | VFR Sky: a broken layer at 7,000 feet, a broken layer at 9,000 feet, overcast at 11,000 feet | from the northwest (320°) at 6 knots | 10+ mi | 7,000 ft | 5,344 ft | 10:53 pm MDT (04:53 UTC) |
The highest airport on this list sits at 6,451 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, 4:43 am MDT (10:43 UTC)
Wind from the south-southwest at 11 knots, visibility more than 6 miles, a broken layer at 10,000 feet VFR
The whole forecast for CPR
- From Mon 12:00 am MDT (06:00 UTC): wind from the south-southwest at 11 knots, visibility more than 6 miles, a broken layer at 10,000 feet
- 30% chance between Mon 12:00 am MDT (06:00 UTC) and 4:00 am MDT (10:00 UTC): visibility 5 miles, light rain showers, a broken layer at 3,000 feet
- From Mon 9:00 am MDT (15:00 UTC): wind from the north at 8 knots, visibility more than 6 miles, scattered clouds at 2,000 feet, a broken layer at 3,500 feet
- From Mon 3:00 pm MDT (21:00 UTC): wind from the north-northeast at 10 knots, visibility more than 6 miles, light rain showers, scattered clouds at 1,500 feet, a broken layer at 5,000 feet and more above
- From Mon 6:00 pm MDT (00:00 UTC): wind from the northeast at 10 knots, visibility 6 miles, light rain showers, scattered clouds at 1,000 feet, a broken layer at 2,000 feet and more above
- 30% chance between Mon 6:00 pm MDT (00:00 UTC) and 12:00 am MDT (06:00 UTC): visibility 4 miles, rain, a broken layer at 1,200 feet
The forecast for EUG, the departure
- From Sun 11:00 pm PDT (06:00 UTC): wind light and variable, visibility more than 6 miles, clear skies
- From Mon 2:00 pm PDT (21:00 UTC): wind from the north at 5 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 EUG 6:34 pm PDT (01:34 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 before sunrise there (7:15 am MDT (13:15 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: Mahlon Sweet Field, Casper/Natrona County International.