Plan a flight · Sun 6:48 pm PDT (01:48 UTC)

Mahlon Sweet Field to Purdue University Airport EUG → LAF

1,614 nautical miles (1,857 statute miles) east on a straight line, true course 085°, about 070° magnetic at the departure end (variation 15E). At 120 knots that is 9 h 43 min at the quickest height in today's winds (39,000 ft, a 46-knot tailwind), arriving about 7:31 am EDT (11:31 UTC), after sunset at the destination. Right now EUG is VFR, wind from the north-northwest (340°) at 10 knots; LAF is 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: 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 3W: thunderstorms (a convective SIGMET) up to 31,000 ft, moving from the southwest at 40 knots, until 7:55 pm PDT (02:55 UTC). Over the route from 638 to 777 nm out.
as issued
```
WSUS33 KKCI 120055
MKCW WST 120055
CONVECTIVE SIGMET 3W
VALID UNTIL 0255Z
MT WY
FROM 10WSW MLS-70E DDY-20N LAR-50E BPI-30NE BIL-10WSW MLS
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 149 nm of the route.
AIRMET ZULU 2C: moderate icing up to 16,000 ft. Over the route from 90 to 209 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 110 to 717 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 299 to 897 nm out.
AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 319 to 697 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 349 to 936 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 508 to 787 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 588 to 737 nm out.
AIRMET TANGO 3W: 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 1185 to 1345 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

B738 at 33,000 ft, 16 nm north, 4:57 pm PDT (23:57 UTC): moderate chop turbulence from 31,000 ft to 33,000 ft. 488 nm along the route, 16 nm north of the line.
as filed, and in English
```
IDA UA /OV DBS015030/TM 2357/FL330/TP B738/TB MOD CHOP 310-330 /ZLC
```
Report
a routine report filed through IDA
Where
30 nm north (015°) of DBS
Time
23:57 UTC
Height
at 33,000 ft
Aircraft
B738
Turbulence
moderate chop from 31,000 ft to 33,000 ft zlc
E75L at 9,000 ft, 11 nm southeast, 4:05 pm PDT (23:05 UTC): light rime icing, -6 °C, remarks: zse. 80 nm along the route, 11 nm southeast of the line.
as filed, and in English
```
RDM UA /OV DSD155012/TM 2305/FL090/TP E75L/TA M06/IC LGT RIME/RM ZSE
```
Report
a routine report filed through RDM
Where
12 nm southeast (155°) of DSD
Time
23:05 UTC
Height
at 9,000 ft
Aircraft
E75L
Temperature
−6 °C
Icing
light rime
Remarks
zse
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 6,500 ft, 2 nm northwest, 5:28 pm PDT (00:28 UTC): a broken layer above 6,500 ft. 90 nm along the route, 2 nm northwest of the line.
as filed, and in English
```
RDM UA /OV RDM/TM 0028/FL065/TP E175/SK BKN065-TOPSUNKN
```
Report
a routine report filed through RDM
Where
over RDM
Time
00:28 UTC
Height
at 6,500 ft
Aircraft
E175
Sky
a broken layer from 6,500 ft, tops unknown
E75L at 9,500 ft, 2 nm northwest, 4:07 pm PDT (23:07 UTC): light rime icing from 7,000 ft to 9,500 ft, a broken layer above 7,300 ft, -2 °C, 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 2307/FL095/TP E75L/SK BKN073-TOPSUNKN/TA M2/IC LGT RIME 095-070/RM DURD RWY 5
```
Report
a routine report filed through RDM
Where
over RDM
Time
23:07 UTC
Height
at 9,500 ft
Aircraft
E75L
Sky
a broken layer from 7,300 ft, tops unknown
Temperature
−2 °C
Icing
light rime from 9,500 ft to 7,000 ft
Remarks
during the descent runway 5
E75L at 11,000 ft, 5 nm southwest, 5:36 pm PDT (00:36 UTC): trace to light rime icing from 10,500 ft to 11,500 ft, -8 °C, remarks: durc-zse. 100 nm along the route, 5 nm southwest of the line.
as filed, and in English
```
RDM UA /OV DSD090015/TM 0036/FL110/TP E75L/TA M08/IC TRACE-LGT RIME 105-115/RM DURC-ZSE
```
Report
a routine report filed through RDM
Where
15 nm east (090°) of DSD
Time
00:36 UTC
Height
at 11,000 ft
Aircraft
E75L
Temperature
−8 °C
Icing
trace-lgt rime from 10,500 ft to 11,500 ft
Remarks
durc-zse
CL60 descending, 47 nm south, 4:00 pm PDT (23:00 UTC): remarks: + 10 knots on final. 299 nm along the route, 47 nm south of the line.
as filed, and in English
```
BOI UA /OV BOI/TM 2300/FLDURD/TP CL60/RM +/- 10 KTS ON FINAL
```
Report
a routine report filed through BOI
Where
over BOI
Time
23:00 UTC
Height
during the descent
Aircraft
CL60
Remarks
+ 10 knots on final
PC12 at 6,000 ft, 49 nm south, 6:09 pm PDT (01:09 UTC): scattered clouds up to 6,000 ft, remarks: multiple scattered layers during the descent RY31. 388 nm along the route, 49 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 RY31
E550 at 21,000 ft, 49 nm south, 4:27 pm PDT (23:27 UTC): light turbulence, a few clouds above 7,000 ft, remarks: during the climb zlc. 388 nm along the route, 49 nm south of the line.
as filed, and in English
```
SUN UA /OV SUN/TM 2327/FL210/TP E550/SK FEW070/TB CONS LGT/RM DURC /ZLC
```
Report
a routine report filed through SUN
Where
over SUN
Time
23:27 UTC
Height
at 21,000 ft
Aircraft
E550
Sky
a few clouds from 7,000 ft
Turbulence
continuous light
Remarks
during the climb zlc
A320 descending, 35 nm south, 5:54 pm PDT (00:54 UTC): overcast above 7,500 ft, remarks: braking action good during the descent RY19. 538 nm along the route, 35 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 RY19
B763 at 32,000 ft, 28 nm north, 6:29 pm PDT (01:29 UTC): light to moderate clear-air turbulence, remarks: zdvwc. 946 nm along the route, 28 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
E170 at 23,000 ft, 25 nm southeast, 4:14 pm PDT (23:14 UTC): light turbulence. At the destination end, 25 nm southeast of the line.
as filed, and in English
```
IND UA /OV VHP315020/TM 2314/FL230/TP E170/TB LGT
```
Report
a routine report filed through IND
Where
20 nm northwest (315°) of VHP
Time
23:14 UTC
Height
at 23,000 ft
Aircraft
E170
Turbulence
light

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 13 forecast points nearest it (RDM, BOI, DLN, LND, RAP, PIR, ONL, FSD, OMA, DSM, BRL, JOT, IND). 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	250° at 6 kt	−4 kt	8 °C	124 kt	13 h 01 min	10:49 am EDT (14:49 UTC)
7,500 ft	220° at 8 kt	−3 kt	8 °C	123 kt	13 h 07 min	10:55 am EDT (14:55 UTC)
9,500 ft	220° at 10 kt	−5 kt	5 °C	125 kt	12 h 55 min	10:43 am EDT (14:43 UTC)
11,500 ft	230° at 13 kt	−8 kt	2 °C	128 kt	12 h 37 min	10:25 am EDT (14:25 UTC)
13,500 ft	230° at 15 kt	−10 kt	-2 °C	130 kt	12 h 25 min	10:13 am EDT (14:13 UTC)
15,500 ft	230° at 17 kt	−12 kt	-7 °C	132 kt	12 h 14 min	10:02 am EDT (14:02 UTC)
17,500 ft	230° at 19 kt	−13 kt	-11 °C	133 kt	12 h 08 min	9:56 am EDT (13:56 UTC)
18,000 ft FL180	230° at 19 kt	−14 kt	-12 °C	134 kt	12 h 03 min	9:51 am EDT (13:51 UTC)
24,000 ft FL240	240° at 22 kt	−17 kt	-22 °C	137 kt	11 h 47 min	9:35 am EDT (13:35 UTC)
30,000 ft FL300	240° at 28 kt	−24 kt	-35 °C	144 kt	11 h 12 min	9:00 am EDT (13:00 UTC)
34,000 ft FL340	250° at 41 kt	−37 kt	-40 °C	157 kt	10 h 17 min	8:05 am EDT (12:05 UTC)
39,000 ft FL390	260° at 47 kt	−46 kt	-47 °C	166 kt	9 h 43 min	7:31 am EDT (11:31 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
RDM	used from 0 nm out; 64 nm from the line		010/15 -2°	030/21 -8°	020/26 -12°	020/46 -22°	010/72 -27°	360/47 -34°	340/31 -35°	320/20 -40°
BOI	used from 199 nm out; 90 nm from the line		330/14 4°	230/5 -2°	220/20 -7°	210/37 -20°	200/59 -26°	200/67 -34°	210/73 -35°	220/62 -41°
DLN	used from 398 nm out; 67 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°
LND	used from 548 nm out; 95 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°
RAP	used from 747 nm out; 99 nm from the line		120/15 12°	180/22 11°	220/26 5°	230/35 -9°	240/40 -22°	240/50 -37°	240/51 -41°	240/47 -47°
PIR	used from 946 nm out; 70 nm from the line		L/V 17°	230/13 12°	220/22 6°	250/31 -9°	250/34 -21°	240/50 -35°	230/61 -43°	240/62 -51°
ONL	used from 996 nm out; 58 nm from the line		200/20 17°	230/26 14°	240/21 7°	250/27 -9°	260/32 -19°	240/44 -34°	240/56 -41°	250/62 -51°
FSD	used from 1146 nm out; 63 nm from the line	200/16	220/20 17°	240/26 13°	230/19 6°	240/25 -9°	240/28 -20°	250/39 -33°	250/44 -43°	260/63 -52°
OMA	used from 1195 nm out; 69 nm from the line	190/34	230/34 19°	250/25 12°	250/18 6°	250/22 -7°	250/28 -19°	260/34 -32°	260/39 -41°	280/56 -51°
DSM	used from 1245 nm out; 44 nm from the line	200/32	240/27 17°	260/19 10°	260/16 5°	260/19 -7°	240/22 -19°	270/20 -32°	270/38 -42°	290/58 -53°
BRL	used from 1345 nm out; 69 nm from the line	200/20	250/21 16°	240/22 10°	260/20 5°	270/16 -7°	290/22 -18°	320/41 -34°	320/56 -43°	310/68 -53°
JOT	used from 1494 nm out; 48 nm from the line	230/11	290/12 16°	300/19 10°	320/19 4°	300/17 -9°	330/31 -20°	320/49 -37°	320/53 -45°	320/67 -49°
IND	used from 1594 nm out; 60 nm from the line	320/10	350/30 16°	350/32 10°	350/30 4°	340/31 -10°	340/42 -21°	340/49 -37°	320/46 -41°	320/47 -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: scattered clouds at 4,500 feet, scattered clouds at 7,500 feet	from the north-northwest (340°) at 10 knots	10+ mi	none	373 ft	5:54 pm PDT (00:54 UTC)
RDM Redmond, OR	90 nm out, 2 nm northwest of the line, tower	VFR Sky: overcast at 6,500 feet	from the north (350°) at 8 knots	10+ mi	6,500 ft	3,081 ft	00:56 UTC
GCD John Day, OR	179 nm out, 7 nm northeast of the line	marginal VFR Sky: overcast at 2,800 feet	from the north-northwest (330°) at 7 knots	10+ mi	2,800 ft	3,702 ft	01:35 UTC
LLJ Challis, ID	388 nm out, 13 nm north of the line	marginal VFR Sky: overcast at 2,600 feet Weather: light rain	from the north-northwest (340°) at 11 knots	10+ mi	2,600 ft	5,075 ft	00:55 UTC
HSG Thermopolis, WY	638 nm out, 21 nm south of the line	low IFR Sky: overcast at 300 feet Weather: light rain	from the east (080°) at 5 knots	10+ mi	300 ft	4,891 ft	01:35 UTC
WRL Worland, WY	657 nm out, 4 nm south of the line	marginal VFR Sky: scattered clouds at 700 feet, overcast at 1,200 feet Weather: light rain	from the north (010°) at 7 knots	7 mi	1,200 ft	4,251 ft	01:37 UTC
SUO Rosebud, SD	966 nm out, 3 nm southeast of the line	low IFR Sky: overcast at 400 feet Weather: mist	from the north-northeast (030°) at 5 knots	5 mi	400 ft	2,724 ft	01:35 UTC
YKN Yankton, SD	1126 nm out, 11 nm north of the line	VFR	from the west-northwest (300°) at 8 knots	10+ mi	none	1,305 ft	00:56 UTC
SUX Sioux City, IA	1175 nm out, 10 nm southwest of the line, tower	VFR	from the south-southeast (160°) at 4 knots	10+ mi	none	1,098 ft	00:52 UTC
MLI Moline, IL	1444 nm out, 8 nm north of the line, tower	VFR	from the south-southeast (160°) at 7 knots	10+ mi	none	589 ft	00:52 UTC
PNT Pontiac, IL	1534 nm out, 4 nm northwest of the line	VFR	from the south (180°) at 3 knots	10+ mi	none	666 ft	01:35 UTC
LAF Lafayette, IN	destination	VFR	calm	10+ mi	none	605 ft	8:54 pm EDT (00:54 UTC)

The highest airport on this list sits at 5,075 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At LAF when you get there the forecast at the estimated arrival, 7:31 am EDT (11:31 UTC)

Wind calm, visibility more than 6 miles, a few clouds at 25,000 feet VFR

The whole forecast for LAF

From Sun 8:00 pm EDT (00:00 UTC): wind calm, visibility more than 6 miles, a few clouds at 25,000 feet
From Mon 10:00 am EDT (14:00 UTC): wind from the south-southwest at 8 knots, visibility more than 6 miles, scattered clouds at 20,000 feet
From Mon 2:00 pm EDT (18:00 UTC): wind from the southwest at 11 knots, gusting to 19, visibility more than 6 miles, scattered clouds at 20,000 feet

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 LAF 7:12 pm EDT (23:12 UTC) (civil twilight ends 7:40 pm EDT (23:40 UTC)). At 120 knots the arrival at LAF is before sunrise there (7:55 am EDT (11:55 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 now, the upper Mississippi valley · 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, Purdue University Airport.