Plan a flight · Sun 8:36 pm PDT (03:36 UTC)

Mahlon Sweet Field to Rosebud Sioux Tribal Airport EUG → SUO

969 nautical miles (1,115 statute miles) east on a straight line, true course 085°, about 070° magnetic at the departure end (variation 15E). At 120 knots that is 6 h 06 min at the quickest height in today's winds (39,000 ft, a 39-knot tailwind), arriving about 4:42 am CDT (09:42 UTC), after sunset at the destination. Right now EUG is VFR, wind from the northwest (320°) at 7 knots; SUO is low IFR, wind from the north-northeast (020°) 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 2C: thunderstorms (a convective SIGMET) up to 31,000 ft, moving from the southwest at 40 knots, until 9:55 pm PDT (04:55 UTC). Near the route, 749 nm along the route.
as issued
```
WSUS32 KKCI 120255
MKCC WST 120255
CONVECTIVE SIGMET 2C
VALID UNTIL 0455Z
NE CO WY
FROM 40SE CZI-30WNW BFF-30SSE LAR-70NW LAR-40SE CZI
AREA TS MOV FROM 22040KT. TOPS TO FL310.
```
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the first 180 nm of the route.
AIRMET ZULU 2C: moderate icing up to 20,000 ft. Over the route from 80 to 300 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 180 to 729 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 310 to 689 nm out.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 340 to 439 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 360 to 939 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 509 to 779 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). Over the route from 559 to 749 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 579 to 899 nm out.

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

S22T at 15,000 ft, 4 nm southeast, 6:47 pm PDT (01:47 UTC): moderate rime icing above 15,000 ft, -5 °C. 559 nm along the route, 4 nm southeast 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
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
B738 at 11,000 ft, 2 nm northwest, 6:19 pm PDT (01:19 UTC): light rime icing, remarks: during the descent runway 5. 90 nm along the route, 2 nm northwest of the line.
as filed, and in English
```
RDM UA /OV RDM/TM 0119/FL110/TP B738/TA UNKN/IC LGT RIME/RM DURD RWY 5
```
Report
a routine report filed through RDM
Where
over RDM
Time
01:19 UTC
Height
at 11,000 ft
Aircraft
B738
Temperature
UNKN
Icing
light rime
Remarks
during the descent runway 5
E75L at 11,000 ft, 2 nm northwest, 6:16 pm PDT (01:16 UTC): light rime icing, remarks: during the descent runway 29. 90 nm along the route, 2 nm northwest of the line.
as filed, and in English
```
RDM UA /OV RDM/TM 0116/FL110/TP E75L/TA UNKN/IC LGT RIME/RM DURD RWY 29
```
Report
a routine report filed through RDM
Where
over RDM
Time
01:16 UTC
Height
at 11,000 ft
Aircraft
E75L
Temperature
UNKN
Icing
light rime
Remarks
during the descent runway 29
E175 at 5,900 ft, 48 nm south, 8:29 pm PDT (03:29 UTC): a broken layer above 5,900 ft, remarks: during the descent runway 31. 390 nm along the route, 48 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, 48 nm south, 7:59 pm PDT (02:59 UTC): a broken layer above 5,700 ft, remarks: during the descent runway 31. 390 nm along the route, 48 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
PC12 at 6,000 ft, 48 nm south, 6:09 pm PDT (01:09 UTC): scattered clouds up to 6,000 ft, remarks: multiple scattered layers during the descent runway 31. 390 nm along the route, 48 nm south of the line.
as filed, and in English
```
SUN UA /OV KSUN/TM 0109/FL060/TP PC12/SK SCT-TOP060/WX FV05SM/RM MULTIPLE SCT LAYERS DURD RY31
```
Report
a routine report filed through SUN
Where
over KSUN
Time
01:09 UTC
Height
at 6,000 ft
Aircraft
PC12
Sky
scattered clouds, tops 6,000 ft
Weather
flight visibility 5 miles
Remarks
multiple scattered layers during the descent runway 31
A320 descending, 34 nm south, 5:54 pm PDT (00:54 UTC): overcast above 7,500 ft, remarks: braking action good during the descent runway 19. 539 nm along the route, 34 nm south 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
UAL1076 at 30,000 ft, 6 nm northeast, 7:36 pm PDT (02:36 UTC): light turbulence, wind 225° at 60 knots. 659 nm along the route, 6 nm northeast of the line.
as filed, and in English
```
ARP UAL1076 4405N 10749W 0236 F300 225/060KT TB CONT LGT TURB IC
```
Report
a routine report filed through ARP
BE20 at 15,000 ft, 31 nm north, 6:56 pm PDT (01:56 UTC): -5 °C, remarks: clear out at at 22,000 ft ZDVWC-31. 809 nm along the route, 31 nm north of the line.
as filed, and in English
```
CUT UA /OV ECS340020/TM 0156/FL150/TP BE20/TA M05/IC T RIME 150-180/RM CLR OUT AT 220 ZDVWC-31
```
Report
a routine report filed through CUT
Where
20 nm north (340°) of ECS
Time
01:56 UTC
Height
at 15,000 ft
Aircraft
BE20
Temperature
−5 °C
Icing
T rime from 15,000 ft to 18,000 ft
Remarks
clear out at at 22,000 ft ZDVWC-31
B763 at 32,000 ft, 29 nm north, 6:29 pm PDT (01:29 UTC): light to moderate clear-air turbulence, remarks: zdvwc. At the destination end, 29 nm north of the line.
as filed, and in English
```
RAP UA /OV RAP084081/TM 0129/FL320/TP B763/TB OCNL LGT-MOD CAT/RM ZDVWC
```
Report
a routine report filed through RAP
Where
81 nm east (084°) of RAP
Time
01:29 UTC
Height
at 32,000 ft
Aircraft
B763
Turbulence
occasional light to moderate clear-air turbulence
Remarks
zdvwc

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 6 forecast points nearest it (RDM, BOI, DLN, LND, RAP, PIR). 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	150° at 3 kt	+3 kt	5 °C	117 kt	8 h 17 min	6:53 am CDT (11:53 UTC)
7,500 ft	180° at 6 kt	+1 kt	2 °C	119 kt	8 h 09 min	6:45 am CDT (11:45 UTC)
9,500 ft	200° at 8 kt	−1 kt	0 °C	121 kt	8 h	6:36 am CDT (11:36 UTC)
11,500 ft	220° at 14 kt	−8 kt	-3 °C	128 kt	7 h 34 min	6:10 am CDT (11:10 UTC)
13,500 ft	230° at 17 kt	−11 kt	-6 °C	131 kt	7 h 24 min	6:00 am CDT (11:00 UTC)
15,500 ft	230° at 19 kt	−12 kt	-10 °C	132 kt	7 h 20 min	5:56 am CDT (10:56 UTC)
17,500 ft	230° at 21 kt	−13 kt	-14 °C	133 kt	7 h 17 min	5:53 am CDT (10:53 UTC)
18,000 ft FL180	230° at 21 kt	−14 kt	-15 °C	134 kt	7 h 14 min	5:50 am CDT (10:50 UTC)
24,000 ft FL240	240° at 27 kt	−22 kt	-25 °C	142 kt	6 h 49 min	5:25 am CDT (10:25 UTC)
30,000 ft FL300	240° at 30 kt	−22 kt	-33 °C	142 kt	6 h 49 min	5:25 am CDT (10:25 UTC)
34,000 ft FL340	230° at 44 kt	−32 kt	-36 °C	152 kt	6 h 22 min	4:58 am CDT (09:58 UTC)
39,000 ft FL390	240° at 50 kt	−39 kt	-43 °C	159 kt	6 h 06 min	4:42 am CDT (09:42 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	6,000	9,000	12,000	18,000	24,000	30,000	34,000	39,000
RDM	used from 0 nm out; 64 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 200 nm out; 89 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°
DLN	used from 400 nm out; 67 nm from the line		090/6 -6°	240/22 -4°	210/34 -16°	210/62 -25°	210/66 -34°	210/82 -36°	220/77 -42°
LND	used from 549 nm out; 94 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°
RAP	used from 749 nm out; 97 nm from the line	180/23 12°	200/38 13°	210/38 6°	220/28 -10°	230/34 -21°	230/37 -36°	250/52 -38°	250/59 -46°
PIR	used from 949 nm out; 74 nm from the line	170/22 19°	190/25 13°	210/32 6°	240/23 -9°	250/32 -21°	250/38 -36°	260/44 -40°	260/52 -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
EUG Eugene, OR	departure	VFR Sky: a few clouds at 6,500 feet, scattered clouds at 8,000 feet	from the northwest (320°) at 7 knots	10+ mi	none	373 ft	7:54 pm PDT (02:54 UTC)
RDM Redmond, OR	90 nm out, 2 nm northwest of the line, tower	VFR Sky: overcast at 4,900 feet	from the northwest (310°) at 5 knots	10+ mi	4,900 ft	3,081 ft	02:56 UTC
GCD John Day, OR	180 nm out, 7 nm northeast of the line	VFR Sky: scattered clouds at 3,000 feet, overcast at 4,100 feet	from the north-northwest (340°) at 6 knots	10+ mi	4,100 ft	3,702 ft	03:15 UTC
ONO Ontario, OR	270 nm out, 19 nm south of the line	VFR Sky: overcast at 7,500 feet	from the north-northwest (330°) at 19 knots, gusting to 28	10+ mi	7,500 ft	2,193 ft	02:53 UTC
LLJ Challis, ID	390 nm out, 13 nm north of the line	marginal VFR Sky: scattered clouds at 1,700 feet, overcast at 2,400 feet Weather: light rain	from the north-northwest (330°) at 8 knots	10+ mi	2,400 ft	5,075 ft	02:55 UTC
RXE Rexburg, ID	489 nm out, 24 nm south of the line	marginal VFR Sky: a broken layer at 2,000 feet, overcast at 11,000 feet	calm	10+ mi	2,000 ft	4,862 ft	03:07 UTC
WRL Worland, WY	659 nm out, 3 nm southwest of the line	low IFR Sky: overcast at 400 feet Weather: mist	from the north-northwest (340°) at 9 knots	2.5 mi	400 ft	4,251 ft	03:27 UTC
CUT Custer, SD	849 nm out, 8 nm north of the line	VFR	from the north-northeast (020°) at 4 knots	9 mi	none	5,619 ft	02:53 UTC
SUO Rosebud, SD	destination	low IFR Sky: overcast at 300 feet Weather: mist	from the north-northeast (020°) at 7 knots	4 mi	300 ft	2,724 ft	10:15 pm CDT (03:15 UTC)

The highest airport on this list sits at 5,619 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At SUO when you get there the forecast at the estimated arrival, 4:42 am CDT (09:42 UTC)

SUO has no terminal forecast; use the nearest airport that does.

The forecast for EUG, the departure

From Sun 5:00 pm PDT (00:00 UTC): wind from the north at 10 knots, visibility more than 6 miles, scattered clouds at 5,000 feet
From Sun 8:00 pm PDT (03:00 UTC): wind light and variable, 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 SUO 7:05 pm CDT (00:05 UTC) (civil twilight ends 7:34 pm CDT (00:34 UTC)). At 120 knots the arrival at SUO is before sunrise there (7:53 am CDT (12:53 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

Radar now, the Pacific Northwest · loop National Weather Service

Radar now, the northern Rockies · loop National Weather Service

Radar, the whole country · loop National Weather Service

Surface analysis now Weather Prediction Center

Forecast chart, 12 hours ahead Weather Prediction Center

Forecast chart, 24 hours ahead Weather Prediction Center

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, Rosebud Sioux Tribal Airport.