Casper/Natrona County International to Pierre Regional CPR → PIR
283 nautical miles (325 statute miles) east on a straight line, true course 070°, about 058° magnetic at the departure end (variation 12E). At 120 knots that is 1 h 41 min at the quickest height in today's winds (39,000 ft, a 48-knot tailwind), arriving about 8:04 am CDT (13:04 UTC). Right now CPR is VFR, wind from the west-southwest (240°) at 14 knots; PIR is low IFR, wind from the northeast (040°) at 6 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 C17C: thunderstorms (a convective SIGMET) up to 36,000 ft, moving from the southwest at 40 knots, until 6:55 am MDT (12:55 UTC). Near the route, at the destination end.
as issued
WSUS32 KKCI 121055 MKCC WST 121055 CONVECTIVE SIGMET 17C VALID UNTIL 1255Z SD ND FROM 20NW BIS-60E BIS-20WNW PIR-20SW DPR-20NW BIS AREA TS MOV FROM 22040KT. TOPS TO FL360.
- 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 97 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the first 49 nm of the route.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Near the route, at the departure end.
- 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 185 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
- BE9L at 17,000 ft, 18 nm northwest, 3:42 am MDT (09:42 UTC): light rime icing from 15,000 ft to 17,000 ft, 0 °C, remarks: zdvwc. At the departure end, 18 nm northwest of the line.
as filed, and in English
CPR UA /OV DDY250025/TM 0942/FL170/TP BE9L/TA 00/IC LGT RIME 150-170/RM ZDVWC
- Report
- a routine report filed through CPR
- Where
- 25 nm west (250°) of DDY
- Time
- 09:42 UTC
- Height
- at 17,000 ft
- Aircraft
- BE9L
- Temperature
- 0 °C
- Icing
- light rime from 15,000 ft to 17,000 ft
- 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 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 3 forecast points nearest it (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 | 250° at 26 kt | −26 kt | 16 °C | 146 kt | 1 h 56 min | 8:19 am CDT (13:19 UTC) |
| 7,500 ft | 250° at 24 kt | −24 kt | 11 °C | 144 kt | 1 h 58 min | 8:21 am CDT (13:21 UTC) |
| 9,500 ft | 250° at 25 kt | −25 kt | 8 °C | 145 kt | 1 h 57 min | 8:20 am CDT (13:20 UTC) |
| 11,500 ft | 240° at 25 kt | −25 kt | 4 °C | 145 kt | 1 h 57 min | 8:20 am CDT (13:20 UTC) |
| 13,500 ft | 230° at 27 kt | −25 kt | 0 °C | 145 kt | 1 h 57 min | 8:20 am CDT (13:20 UTC) |
| 15,500 ft | 220° at 31 kt | −26 kt | -5 °C | 146 kt | 1 h 56 min | 8:19 am CDT (13:19 UTC) |
| 17,500 ft | 210° at 35 kt | −27 kt | -10 °C | 147 kt | 1 h 56 min | 8:19 am CDT (13:19 UTC) |
| 18,000 ft FL180 | 210° at 36 kt | −27 kt | -11 °C | 147 kt | 1 h 56 min | 8:19 am CDT (13:19 UTC) |
| 24,000 ft FL240 | 210° at 46 kt | −33 kt | -23 °C | 153 kt | 1 h 51 min | 8:14 am CDT (13:14 UTC) |
| 30,000 ft FL300 | 230° at 48 kt | −44 kt | -32 °C | 164 kt | 1 h 44 min | 8:07 am CDT (13:07 UTC) |
| 34,000 ft FL340 | 230° at 47 kt | −44 kt | -36 °C | 164 kt | 1 h 44 min | 8:07 am CDT (13:07 UTC) |
| 39,000 ft FL390 | 230° at 51 kt | −48 kt | -46 °C | 168 kt | 1 h 41 min | 8:04 am CDT (13:04 UTC) |
Based on data from the 12th at 06:00 UTC; valid on the 12th 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| LND | used from 0 nm out; 123 nm from the line | 240/10 3° | 240/30 0° | 220/42 -13° | 230/52 -23° | 220/54 -33° | 220/52 -36° | 220/53 -44° | ||
| RAP | used from 49 nm out; 91 nm from the line | 250/28 16° | 260/31 10° | 240/25 4° | 210/35 -10° | 200/45 -23° | 230/47 -31° | 230/47 -36° | 230/51 -46° | |
| PIR | used from 244 nm out; 19 nm from the line | 230/15 15° | 220/22 14° | 220/24 6° | 200/32 -10° | 210/48 -22° | 240/45 -33° | 240/43 -37° | 250/55 -46° |
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 5,500 feet, a broken layer at 7,000 feet | from the west-southwest (240°) at 14 knots | 10+ mi | 5,500 ft | 5,344 ft | 4:53 am MDT (10:53 UTC) |
| DGW Douglas, WY | 39 nm out, 23 nm southeast of the line | VFR Sky: scattered clouds at 8,000 feet | from the east (100°) at 3 knots | 10+ mi | none | 4,932 ft | 10:53 UTC |
| ECS Newcastle, WY | 107 nm out, 24 nm north of the line | low IFR Sky: overcast at 200 feet Weather: mist | from the west-southwest (250°) at 3 knots | 0.75 mi | 200 ft | 4,177 ft | 11:15 UTC |
| CUT Custer, SD | 136 nm out, 6 nm northwest of the line | low IFR Sky: sky obscured at 200 feet Weather: mist | from the south-southwest (210°) at 3 knots | 1 mi | 200 ft | 5,619 ft | 11:18 UTC |
| RAP Rapid City, SD | 166 nm out, 16 nm northwest of the line, tower | low IFR Sky: sky obscured at 200 feet Weather: fog | from the east-southeast (120°) at 7 knots | 0.25 mi | 200 ft | 3,203 ft | 10:52 UTC |
| PHP Philip, SD | 224 nm out, 3 nm south of the line | low IFR Sky: a broken layer at 400 feet, a broken layer at 1,000 feet, overcast at 1,500 feet | from the east (090°) at 8 knots | 10+ mi | 400 ft | 2,209 ft | 10:55 UTC |
| PIR Pierre, SD | destination | low IFR Sky: overcast at 400 feet Weather: mist | from the northeast (040°) at 6 knots | 4 mi | 400 ft | 1,744 ft | 5:53 am CDT (10:53 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 PIR when you get there the forecast at the estimated arrival, 8:04 am CDT (13:04 UTC)
Wind from the northeast at 10 knots, visibility 6 miles, mist, overcast at 600 feet IFR
The whole forecast for PIR
- From Mon 3:00 am CDT (08:00 UTC): wind from the northeast at 10 knots, visibility 6 miles, mist, overcast at 600 feet
- At times between Mon 3:00 am CDT (08:00 UTC) and 7:00 am CDT (12:00 UTC): visibility 2 miles, light drizzle, mist, overcast at 400 feet
- From Mon 11:00 am CDT (16:00 UTC): wind from the north at 6 knots, visibility more than 6 miles, overcast at 800 feet
- From Mon 1:00 pm CDT (18:00 UTC): wind from the northwest at 10 knots, visibility more than 6 miles, overcast at 1,300 feet
- From Mon 5:00 pm CDT (22:00 UTC): wind from the north-northwest at 14 knots, gusting to 22, visibility more than 6 miles, overcast at 1,800 feet
The forecast for CPR, the departure
- From Mon 6:00 am MDT (12:00 UTC): wind from the south-southwest at 12 knots, gusting to 22, visibility more than 6 miles, a broken layer at 10,000 feet
- From Mon 9:00 am MDT (15:00 UTC): wind from the north at 8 knots, visibility more than 6 miles, scattered clouds at 2,000 feet, a broken layer at 3,500 feet
- From Mon 3:00 pm MDT (21:00 UTC): wind from the north-northeast at 10 knots, visibility more than 6 miles, light rain showers, scattered clouds at 1,500 feet, a broken layer at 5,000 feet and more above
- From Mon 6:00 pm MDT (00:00 UTC): wind from the northeast at 10 knots, visibility 6 miles, light rain showers, scattered clouds at 1,000 feet, a broken layer at 2,000 feet and more above
- 30% chance between Mon 8:00 pm MDT (02:00 UTC) and 2:00 am MDT (08:00 UTC): visibility 4 miles, rain, a broken layer at 1,200 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 6:26 pm MDT (00:26 UTC), at PIR 7:00 pm CDT (00:00 UTC) (civil twilight ends 7:29 pm CDT (00:29 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
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, Pierre Regional.