Plan a flight · Sun 9:05 pm MDT (03:05 UTC)

Casper/Natrona County International to Hector International CPR → FAR

475 nautical miles (547 statute miles) northeast on a straight line, true course 056°, about 044° magnetic at the departure end (variation 12E). At 120 knots that is 2 h 44 min at the quickest height in today's winds (39,000 ft, a 54-knot tailwind), arriving about 12:49 am CDT (05:49 UTC), after sunset at the destination. Right now CPR is VFR, wind calm; FAR is low IFR, wind from the north (360°) at 14 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: 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 149 nm of the route.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the first 79 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). Over the route from 168 to 297 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 last 69 nm of 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 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
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
BE20 at 15,000 ft, 16 nm northwest, 7:56 pm MDT (01:56 UTC): -5 °C, remarks: clear out at at 22,000 ft ZDVWC-31. 119 nm along the route, 16 nm northwest 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
CRJ2 at 11,000 ft, 36 nm northwest, 6:53 pm MDT (00:53 UTC): no turbulence, no icing. 406 nm along the route, 36 nm northwest of the line.
as filed, and in English
```
JMS UA /OV JMS/TM 0053/FL110/TP CRJ2/SK BASE020-TOP040/TB NEG/IC NEG
```
Report
a routine report filed through JMS
Where
over JMS
Time
00:53 UTC
Height
at 11,000 ft
Aircraft
CRJ2
Sky
BASE020-TOP040
Turbulence
none
Icing
none
PC12 at 2,800 ft, 9 nm southeast, 8:37 pm MDT (02:37 UTC): overcast from 1,200 ft to 2,900 ft, 10 °C. At the destination end, 9 nm southeast of the line.
as filed, and in English
```
FAR UA /OV FAR/TM 0237/FL028/TP PC12/SK OVC012-TOP029/TA 10
```
Report
a routine report filed through FAR
Where
over FAR
Time
02:37 UTC
Height
at 2,800 ft
Aircraft
PC12
Sky
overcast from 1,200 ft, tops 2,900 ft
Temperature
10 °C
E75L at 900 ft, 0 nm southwest, 7:57 pm MDT (01:57 UTC): no icing, overcast above 1,200 ft. At the destination end, 0 nm southwest of the line.
as filed, and in English
```
FAR UA /OV KFAR/TM 0157/FL009/TP E75L/SK OVC012/IC NEG
```
Report
a routine report filed through FAR
Where
over KFAR
Time
01:57 UTC
Height
at 900 ft
Aircraft
E75L
Sky
overcast from 1,200 ft
Icing
none
A320 descending, 0 nm southwest, 7:01 pm MDT (01:01 UTC): overcast above 1,200 ft, remarks: during the descent runway 36. At the destination end, 0 nm southwest of the line.
as filed, and in English
```
FAR UA /OV KFAR/TM 0101/FLUNKN/TP A320/SK OVC012-TOPUNKN/RM DURD RWY 36
```
Report
a routine report filed through FAR
Where
over KFAR
Time
01:01 UTC
Height
height not given
Aircraft
A320
Sky
overcast from 1,200 ft, tops unknown
Remarks
during the descent runway 36

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 5 forecast points nearest it (LND, RAP, PIR, ABR, GFK). 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	180° at 14 kt	−8 kt	13 °C	128 kt	3 h 43 min	1:48 am CDT (06:48 UTC)
7,500 ft	200° at 19 kt	−16 kt	12 °C	136 kt	3 h 30 min	1:35 am CDT (06:35 UTC)
9,500 ft	210° at 24 kt	−23 kt	10 °C	143 kt	3 h 19 min	1:24 am CDT (06:24 UTC)
11,500 ft	220° at 29 kt	−28 kt	6 °C	148 kt	3 h 13 min	1:18 am CDT (06:18 UTC)
13,500 ft	230° at 30 kt	−30 kt	1 °C	150 kt	3 h 10 min	1:15 am CDT (06:15 UTC)
15,500 ft	230° at 30 kt	−30 kt	-4 °C	150 kt	3 h 10 min	1:15 am CDT (06:15 UTC)
17,500 ft	240° at 30 kt	−30 kt	-9 °C	150 kt	3 h 10 min	1:15 am CDT (06:15 UTC)
18,000 ft FL180	240° at 30 kt	−30 kt	-10 °C	150 kt	3 h 10 min	1:15 am CDT (06:15 UTC)
24,000 ft FL240	240° at 36 kt	−36 kt	-22 °C	156 kt	3 h 03 min	1:08 am CDT (06:08 UTC)
30,000 ft FL300	240° at 35 kt	−36 kt	-35 °C	156 kt	3 h 03 min	1:08 am CDT (06:08 UTC)
34,000 ft FL340	250° at 47 kt	−47 kt	-40 °C	167 kt	2 h 51 min	12:56 am CDT (05:56 UTC)
39,000 ft FL390	250° at 56 kt	−54 kt	-47 °C	174 kt	2 h 44 min	12:49 am CDT (05:49 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
LND	used from 0 nm out; 122 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 50 nm out; 90 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 248 nm out; 65 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°
ABR	used from 297 nm out; 71 nm from the line	070/14	250/10 17°	270/16 11°	260/28 5°	260/36 -10°	260/41 -22°	270/33 -37°	260/42 -42°	260/50 -48°
GFK	used from 446 nm out; 68 nm from the line	070/18	100/10 9°	250/11 6°	250/27 1°	250/34 -10°	260/43 -21°	260/39 -36°	260/36 -46°	260/59 -53°

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 broken layer at 12,000 feet	calm	10+ mi	12,000 ft	5,344 ft	8:53 pm MDT (02:53 UTC)
ECS Newcastle, WY	109 nm out, 3 nm east of the line	VFR Sky: overcast at 11,000 feet	from the north-northwest (330°) at 7 knots	10+ mi	11,000 ft	4,177 ft	02:55 UTC
RAP Rapid City, SD	158 nm out, 23 nm southeast of the line, tower	low IFR Sky: overcast at 300 feet Weather: mist	from the east (100°) at 4 knots	2 mi	300 ft	3,203 ft	02:52 UTC
MBG Mobridge, SD	307 nm out, 3 nm south of the line	marginal VFR Sky: overcast at 1,100 feet	from the north-northeast (020°) at 7 knots	10+ mi	1,100 ft	1,716 ft	02:52 UTC
ASY Ashley, ND	356 nm out, 2 nm north of the line	no report just now				2,034 ft
GWR Gwinner, ND	426 nm out, 22 nm southeast of the line	reported, no category	from the north (010°) at 15 knots, gusting to 21	5 mi	none	1,265 ft	02:55 UTC
BAC Valley City, ND	436 nm out, 24 nm northwest of the line	IFR Sky: overcast at 800 feet	from the north (010°) at 14 knots	10+ mi	800 ft	1,401 ft	02:15 UTC
FAR Fargo, ND	destination	low IFR Sky: overcast at 300 feet Weather: mist	from the north (360°) at 14 knots	2.5 mi	300 ft	901 ft	9:53 pm CDT (02:53 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 FAR when you get there the forecast at the estimated arrival, 12:49 am CDT (05:49 UTC)

Wind from the north at 14 knots, visibility more than 6 miles, overcast at 400 feet low IFR

At times between Sun 10:00 pm CDT (03:00 UTC) and 1:00 am CDT (06:00 UTC): visibility 2 miles, mist IFR

The whole forecast for FAR

From Sun 10:00 pm CDT (03:00 UTC): wind from the north at 14 knots, visibility more than 6 miles, overcast at 400 feet
At times between Sun 10:00 pm CDT (03:00 UTC) and 1:00 am CDT (06:00 UTC): visibility 2 miles, mist
From Mon 3:00 am CDT (08:00 UTC): wind from the north at 13 knots, visibility 6 miles, mist, overcast at 700 feet
From Mon 11:00 am CDT (16:00 UTC): wind from the north-northeast at 10 knots, visibility more than 6 miles, overcast at 1,000 feet
30% chance between Mon 11:00 am CDT (16:00 UTC) and 5:00 pm CDT (22:00 UTC): light rain showers

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 FAR 6:45 pm CDT (23:45 UTC) (civil twilight ends 7:16 pm CDT (00:16 UTC)). At 120 knots the arrival at FAR is before sunrise there (7:40 am CDT (12:40 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, 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, Hector International.