Plan a flight · Tue 2:38 am MDT (08:38 UTC)

Scottsbluff/Western Nebraska Rgnl/Wm B Heilig Field to Mahlon Sweet Field BFF → EUG

870 nautical miles (1,001 statute miles) west on a straight line, true course 286°, about 276° magnetic at the departure end (variation 10E). At 120 knots that is 7 h 08 min at the quickest height in today's winds (16,500 ft, a 2-knot tailwind), arriving about 8:46 am PDT (15:46 UTC). Right now BFF is marginal VFR, wind from the north-northeast (030°) at 8 knots; EUG is VFR, wind from the southeast (130°) at 3 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 C22C: thunderstorms (a convective SIGMET) up to 33,000 ft, moving from the southwest at 20 knots, until 3:55 am MDT (09:55 UTC). Over the route from 40 to 100 nm out.

as issued

WSUS32 KKCI 130755
MKCC WST 130755
CONVECTIVE SIGMET 22C
VALID UNTIL 0955Z
NE SD WY
FROM 70NNW RAP-40ENE RAP-20WNW CYS-40NNW LAR-40E CZI-70NNW RAP
AREA EMBD TS MOV FROM 24020KT. TOPS TO FL330.

AIRMET SIERRA 9E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the first 350 nm of the route.
AIRMET ZULU 1C: moderate icing up to 22,000 ft. Over the route from 10 to 440 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 90 to 480 nm out.
AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Near the route, 110 nm along the route.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 45,000 ft. Near the route, 150 nm along the route.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the route from 590 to 700 nm out.
AIRMET TANGO 5W: moderate turbulence below 18,000 ft from 14,000 ft to 18,000 ft. Over the route from 660 to 780 nm out.

Turbulence AIRMET in force: moderate turbulence (due to mountain wave) up to 22,000 ft, near the route, 110 nm along the route; AIRMET in force: moderate turbulence (due to mountain wave) from 34,000 ft to 45,000 ft, near the route, 150 nm along the route. A pilot reported smooth air, at 36,000 ft, 35 nm north, 12:36 am MDT (06:36 UTC). The government's turbulence forecast map ↗

Icing AIRMET in force: moderate icing up to 22,000 ft, over the route from 10 to 440 nm out. No pilot has reported icing near the line in the last three hours. The freezing level is about 9,500 ft (from the winds-aloft temperatures), so icing is possible in cloud above that. The government's icing forecast map ↗

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 BFF.

Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first

B38M at 36,000 ft, 35 nm north, 12:36 am MDT (06:36 UTC): no turbulence, remarks: zdvwc. 90 nm along the route, 35 nm north of the line.
as filed, and in English
```
CPR UA /OV DDY100040/TM 0636/FL360/TP B38M/SK TOP340/TB NEG/RM ZDVWC
```
Report
a routine report filed through CPR
Where
40 nm east (100°) of DDY
Time
06:36 UTC
Height
at 36,000 ft
Aircraft
B38M
Sky
TOP340
Turbulence
none
Remarks
zdvwc

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 6 forecast points nearest it (BFF, LND, PIH, BOI, RDM, OTH). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
4,500 ft	010° at 9 kt	−1 kt	3 °C	121 kt	7 h 11 min	8:49 am PDT (15:49 UTC)
6,500 ft	010° at 10 kt	−1 kt	3 °C	121 kt	7 h 11 min	8:49 am PDT (15:49 UTC)
8,500 ft	010° at 6 kt	0	1 °C	120 kt	7 h 15 min	8:53 am PDT (15:53 UTC)
10,500 ft	010° at 3 kt	−1 kt	-1 °C	121 kt	7 h 11 min	8:49 am PDT (15:49 UTC)
12,500 ft	light and variable	−1 kt	-4 °C	121 kt	7 h 11 min	8:49 am PDT (15:49 UTC)
14,500 ft	light and variable	−1 kt	-9 °C	121 kt	7 h 11 min	8:49 am PDT (15:49 UTC)
16,500 ft	010° at 2 kt	−2 kt	-13 °C	122 kt	7 h 08 min	8:46 am PDT (15:46 UTC)
18,000 ft FL180	010° at 2 kt	−2 kt	-16 °C	122 kt	7 h 08 min	8:46 am PDT (15:46 UTC)
24,000 ft FL240	330° at 2 kt	−1 kt	-28 °C	121 kt	7 h 11 min	8:49 am PDT (15:49 UTC)
30,000 ft FL300	230° at 15 kt	+7 kt	-39 °C	113 kt	7 h 42 min	9:20 am PDT (16:20 UTC)
34,000 ft FL340	240° at 19 kt	+11 kt	-44 °C	109 kt	7 h 59 min	9:37 am PDT (16:37 UTC)
39,000 ft FL390	230° at 26 kt	+13 kt	-47 °C	107 kt	8 h 08 min	9:46 am PDT (16:46 UTC)

Based on data from the 13th at 06:00 UTC; valid on the 13th 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
BFF	used from 0 nm out; 25 nm from the line		110/11	240/19 9°	220/29 3°	230/34 -13°	230/57 -25°	220/109 -31°	220/125 -38°	220/123 -48°
LND	used from 100 nm out; 110 nm from the line			190/5 1°	200/13 -3°	210/33 -16°	220/34 -27°	220/54 -40°	210/57 -43°	210/71 -43°
PIH	used from 300 nm out; 82 nm from the line		020/14	040/10 -1°	130/7 -6°	120/16 -18°	120/32 -31°	170/30 -40°	180/29 -44°	180/16 -41°
BOI	used from 500 nm out; 42 nm from the line		340/20 4°	360/20 -2°	020/10 -7°	040/23 -19°	040/26 -34°	040/32 -40°	030/32 -43°	360/10 -44°
RDM	used from 650 nm out; 107 nm from the line		010/5 2°	020/13 1°	020/17 -2°	010/42 -14°	360/50 -25°	360/51 -40°	350/57 -50°	350/39 -56°
OTH	used from 850 nm out; 69 nm from the line	060/8	030/11 6°	020/25 4°	010/30 0°	350/33 -12°	340/42 -23°	340/52 -39°	330/55 -50°	330/60 -58°

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
BFF Scottsbluff, NE	departure	marginal VFR Sky: overcast at 1,000 feet	from the north-northeast (030°) at 8 knots	10+ mi	1,000 ft	3,967 ft	1:53 am MDT (07:53 UTC)
GUR Guernsey, WY	50 nm out, 10 nm north of the line, tower	marginal VFR Sky: scattered clouds at 700 feet, a broken layer at 1,200 feet, a broken layer at 5,500 feet	from the southeast (130°) at 4 knots	10+ mi	1,200 ft	4,401 ft	08:25 UTC
LND Lander, WY	230 nm out, 5 nm west of the line	marginal VFR Sky: a few clouds at 300 feet, a broken layer at 1,300 feet, overcast at 3,200 feet	calm	8 mi	1,300 ft	5,588 ft	08:27 UTC
PNA Pinedale, WY	280 nm out, 10 nm south of the line	VFR Sky: scattered clouds at 3,600 feet, overcast at 5,000 feet Weather: light rain	calm	10+ mi	5,000 ft	7,096 ft	08:15 UTC
IDA Idaho Falls, ID	390 nm out, 14 nm northeast of the line, tower	VFR Sky: overcast at 5,000 feet Weather: light rain	calm	10+ mi	5,000 ft	4,743 ft	07:53 UTC
SUN Hailey, ID	480 nm out, 3 nm southwest of the line, tower	VFR Sky: scattered clouds at 11,000 feet	from the north-northwest (340°) at 4 knots	10+ mi	none	5,319 ft	08:15 UTC
BOI Boise, ID	570 nm out, 11 nm south of the line, tower	VFR	from the northwest (310°) at 7 knots	10+ mi	none	2,871 ft	07:53 UTC
BNO Burns, OR	680 nm out, 21 nm south of the line	VFR	from the west-northwest (300°) at 9 knots	10+ mi	none	4,148 ft	07:53 UTC
RDM Redmond, OR	780 nm out, 12 nm north of the line, tower	VFR	from the south (190°) at 4 knots	10+ mi	none	3,081 ft	07:56 UTC
EUG Eugene, OR	destination	VFR	from the southeast (130°) at 3 knots	10+ mi	none	373 ft	12:54 am PDT (07:54 UTC)

The highest airport on this list sits at 7,096 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

The codes as issued, and in English, for every airport in the table

BFF Scottsbluff, NE