Plan a flight · Sun 8:08 pm MDT (02:08 UTC)

Casper/Natrona County International to South Bend International CPR → SBN

895 nautical miles (1,030 statute miles) east on a straight line, true course 088°, about 076° magnetic at the departure end (variation 12E). At 120 knots that is 5 h 02 min at the quickest height in today's winds (39,000 ft, a 58-knot tailwind), arriving about 3:10 am EDT (07:10 UTC), after sunset at the destination. Right now CPR is VFR, wind from the northwest (310°) at 7 knots; SBN 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: 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 first 90 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 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 first 40 nm of the route.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the first 179 nm of the route.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the first 80 nm of the route.
AIRMET SIERRA 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Near the route, 209 nm along the route.
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 477 to 637 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 CPR.

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 departure 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
BE9L at 21,000 ft, 32 nm south, 5:22 pm MDT (23:22 UTC): light chop turbulence above 21,000 ft, moderate icing above 21,000 ft, -21 °C, remarks: zdvwc. 40 nm along the route, 32 nm south of the line.
as filed, and in English
```
DGW UA /OV IIP200020/TM 2322/FL210/TP BE9L/SK BASE 200/TA M21/TB OCNL LGT CHOP 210/IC MOD MIX 210/RM ZDVWC
```
Report
a routine report filed through DGW
Where
20 nm south (200°) of IIP
Time
23:22 UTC
Height
at 21,000 ft
Aircraft
BE9L
Sky
base 20,000 ft
Temperature
−21 °C
Turbulence
occasional light chop at 21,000 ft
Icing
moderate mix at 21,000 ft
Remarks
zdvwc
CRJ2 at 9,000 ft, 15 nm southwest, 6:35 pm MDT (00:35 UTC): light chop turbulence, vmc, remarks: occasional moderate turbulence at at 15,000 ft. At the departure end, 15 nm southwest 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
A321 at 32,000 ft, 11 nm southwest, 7:56 pm MDT (01:56 UTC): light turbulence, remarks: pocket continuous light turbulence. 756 nm along the route, 11 nm southwest of the line.
as filed, and in English
```
RPJ UA /OV PLL/TM 0156/FL320/TP A321/TB CONS LGT/RM POCKET CONS LGT TB
```
Report
a routine report filed through RPJ
Where
over PLL
Time
01:56 UTC
Height
at 32,000 ft
Aircraft
A321
Turbulence
continuous light
Remarks
pocket continuous light turbulence
B39M at 35,000 ft, 23 nm south, 6:29 pm MDT (00:29 UTC): no turbulence, remarks: smooth. 846 nm along the route, 23 nm south of the line.
as filed, and in English
```
IKK UA /OV CGT/TM 0029/FL350/TP B39M/TB NEG/RM SMOOTH
```
Report
a routine report filed through IKK
Where
over CGT
Time
00:29 UTC
Height
at 35,000 ft
Aircraft
B39M
Turbulence
none
Remarks
smooth
CRJ7 at 17,000 ft, 20 nm north, 6:04 pm MDT (00:04 UTC): no turbulence. 855 nm along the route, 20 nm north of the line.
as filed, and in English
```
BEH UA /OV ELX270040/TM 0004/FL170/TP CRJ7/TB NEG
```
Report
a routine report filed through BEH
Where
40 nm west (270°) of ELX
Time
00:04 UTC
Height
at 17,000 ft
Aircraft
CRJ7
Turbulence
none
B38M at 31,000 ft, 47 nm northeast, 6:04 pm MDT (00:04 UTC): light chop turbulence up to 31,000 ft. At the destination end, 47 nm northeast of the line.
as filed, and in English
```
AZO UA /OV AZO/TM 0004/FL310/TP B38M/TB CONS LGT CHOP 310 BLO
```
Report
a routine report filed through AZO
Where
over AZO
Time
00:04 UTC
Height
at 31,000 ft
Aircraft
B38M
Turbulence
continuous light chop at 31,000 ft below

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 8 forecast points nearest it (BFF, RAP, PIR, ONL, FSD, MCW, DBQ, JOT). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
3,500 ft	210° at 20 kt	−10 kt		130 kt	6 h 53 min	5:01 am EDT (09:01 UTC)
5,500 ft	210° at 13 kt	−6 kt	16 °C	126 kt	7 h 06 min	5:14 am EDT (09:14 UTC)
7,500 ft	220° at 16 kt	−10 kt	14 °C	130 kt	6 h 53 min	5:01 am EDT (09:01 UTC)
9,500 ft	230° at 18 kt	−14 kt	11 °C	134 kt	6 h 41 min	4:49 am EDT (08:49 UTC)
11,500 ft	240° at 16 kt	−14 kt	7 °C	134 kt	6 h 41 min	4:49 am EDT (08:49 UTC)
13,500 ft	250° at 17 kt	−16 kt	2 °C	136 kt	6 h 35 min	4:43 am EDT (08:43 UTC)
15,500 ft	250° at 19 kt	−18 kt	-2 °C	138 kt	6 h 29 min	4:37 am EDT (08:37 UTC)
17,500 ft	250° at 21 kt	−20 kt	-7 °C	140 kt	6 h 24 min	4:32 am EDT (08:32 UTC)
18,000 ft FL180	250° at 21 kt	−20 kt	-8 °C	140 kt	6 h 24 min	4:32 am EDT (08:32 UTC)
24,000 ft FL240	260° at 28 kt	−28 kt	-20 °C	148 kt	6 h 03 min	4:11 am EDT (08:11 UTC)
30,000 ft FL300	260° at 36 kt	−37 kt	-35 °C	157 kt	5 h 42 min	3:50 am EDT (07:50 UTC)
34,000 ft FL340	270° at 44 kt	−45 kt	-43 °C	165 kt	5 h 25 min	3:33 am EDT (07:33 UTC)
39,000 ft FL390	280° at 57 kt	−58 kt	-50 °C	178 kt	5 h 02 min	3:10 am EDT (07:10 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
BFF	used from 0 nm out; 120 nm from the line		120/24	180/31 13°	210/26 7°	230/25 -7°	240/41 -20°	230/52 -36°	250/56 -41°	260/57 -45°
RAP	used from 149 nm out; 70 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 199 nm out; 99 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 249 nm out; 74 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 398 nm out; 48 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°
MCW	used from 497 nm out; 64 nm from the line	200/35	240/33 18°	250/20 10°	260/10 6°	270/18 -8°	260/28 -19°	280/30 -34°	290/49 -43°	280/70 -54°
DBQ	used from 647 nm out; 25 nm from the line	220/23	240/22 16°	240/24 10°	260/18 5°	270/16 -8°	290/27 -19°	310/42 -35°	320/55 -44°	300/71 -52°
JOT	used from 746 nm out; 52 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°

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
CPR Casper, WY	departure	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)
DGW Douglas, WY	50 nm out, 8 nm south of the line	VFR Sky: scattered clouds at 7,000 feet, a broken layer at 8,000 feet, overcast at 12,000 feet Weather: light rain	from the southeast (140°) at 12 knots	9 mi	8,000 ft	4,932 ft	01:53 UTC
IEN Pine Ridge, SD	169 nm out, 6 nm northeast of the line	no report just now				3,332 ft
VTN Valentine, NE	259 nm out, 4 nm south of the line	VFR Sky: scattered clouds at 700 feet	from the north (010°) at 9 knots	10+ mi	none	2,595 ft	01:52 UTC
AGZ Wagner, SD	358 nm out, 13 nm north of the line	VFR	from the northwest (320°) at 6 knots	10+ mi	none	1,477 ft	01:55 UTC
VMR Vermillion, SD	418 nm out, 2 nm southeast of the line	VFR	from the west-northwest (290°) at 3 knots	10+ mi	none	1,146 ft	01:55 UTC
SUX Sioux City, IA	448 nm out, 21 nm south of the line, tower	VFR	from the south-southeast (160°) at 4 knots	9 mi	none	1,098 ft	01:52 UTC
ALO Waterloo, IA	617 nm out, 7 nm northeast of the line, tower	VFR	from the south (180°) at 11 knots	10+ mi	none	873 ft	01:54 UTC
DBQ Dubuque, IA	696 nm out, 7 nm north of the line, tower	VFR	from the south (170°) at 8 knots	10+ mi	none	1,076 ft	01:53 UTC
RFD Chicago/Rockford, IL	766 nm out, 7 nm northeast of the line, tower	VFR Sky: a few clouds at 25,000 feet	calm	10+ mi	none	742 ft	01:54 UTC
ORD Chicago, IL	826 nm out, 4 nm northwest of the line, tower	VFR	from the south-southeast (150°) at 7 knots	10+ mi	none	680 ft	01:51 UTC
SBN South Bend, IN	destination	VFR	calm	8 mi	none	798 ft	9:54 pm EDT (01:54 UTC)

The highest airport on this list sits at 5,344 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At SBN when you get there the forecast at the estimated arrival, 3:10 am EDT (07:10 UTC)

Wind from the south at 6 knots, visibility 6 miles, mist, clear skies VFR

The whole forecast for SBN

From Sun 8:00 pm EDT (00:00 UTC): wind light and variable, visibility more than 6 miles, clear skies
From Mon 2:00 am EDT (06:00 UTC): wind from the south at 6 knots, visibility 6 miles, mist, clear skies
From Mon 11:00 am EDT (15:00 UTC): wind from the south-southwest at 10 knots, visibility more than 6 miles, clear skies
From Mon 4:00 pm EDT (20:00 UTC): wind from the south-southwest at 11 knots, gusting to 20, visibility more than 6 miles, a few clouds at 25,000 feet

The forecast for CPR, the departure

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

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 CPR 6:28 pm MDT (00:28 UTC), at SBN 7:09 pm EDT (23:09 UTC) (civil twilight ends 7:36 pm EDT (23:36 UTC)). At 120 knots the arrival at SBN is before sunrise there (7:53 am EDT (11:53 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 northern Rockies · loop National Weather Service

Radar now, the upper Mississippi valley · loop National Weather Service

Radar now, the central Great Lakes · 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: Casper/Natrona County International, South Bend International.