Casper/Natrona County International to Yampa Valley Airport CPR → HDN
149 nautical miles (172 statute miles) south on a straight line, true course 193°, about 181° magnetic at the departure end (variation 12E). At 120 knots that is 1 h 50 min at the quickest height in today's winds (8,500 ft, a 39-knot headwind), arriving about 9:29 pm MDT (03:29 UTC), after sunset at the destination. 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: 547 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 8:55 pm MDT (02:55 UTC). Over the first 50 nm of the route.
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.
- SIGMET 1W: thunderstorms (a convective SIGMET) up to 34,000 ft, moving from the southwest at 40 knots, until 8:55 pm MDT (02:55 UTC). Over the last 0 nm of the route.
as issued
WSUS33 KKCI 120055 MKCW WST 120055 CONVECTIVE SIGMET 1W VALID UNTIL 0255Z CO NM WY AZ UT FROM 40NNW CHE-40WNW TBE-60WNW CME-40N SJN-40ESE MTU-40NNW CHE AREA SEV TS MOV FROM 23040KT. TOPS TO FL340. WIND GUSTS TO 60KT POSS.
- 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 whole route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the whole route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the whole route.
- AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Near the route, 120 nm along 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
Not fetched just now.
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 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 2 forecast points nearest it (LND, RKS). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 8,500 ft | 190° at 40 kt | +39 kt | 10 °C | 81 kt | 1 h 50 min | 9:29 pm MDT (03:29 UTC) |
| 10,500 ft | 200° at 49 kt | +49 kt | 6 °C | 71 kt | 2 h 06 min | 9:45 pm MDT (03:45 UTC) |
| 12,500 ft | 200° at 59 kt | +58 kt | 2 °C | 62 kt | 2 h 24 min | 10:03 pm MDT (04:03 UTC) |
| 14,500 ft | 210° at 59 kt | +57 kt | -2 °C | 63 kt | 2 h 22 min | 10:01 pm MDT (04:01 UTC) |
| 16,500 ft | 210° at 58 kt | +56 kt | -6 °C | 64 kt | 2 h 20 min | 9:59 pm MDT (03:59 UTC) |
| 18,000 ft FL180 | 210° at 58 kt | +55 kt | -9 °C | 65 kt | 2 h 18 min | 9:57 pm MDT (03:57 UTC) |
| 24,000 ft FL240 | 210° at 54 kt | +52 kt | -21 °C | 68 kt | 2 h 11 min | 9:50 pm MDT (03:50 UTC) |
| 30,000 ft FL300 | 200° at 44 kt | +44 kt | -33 °C | 76 kt | 1 h 58 min | 9:37 pm MDT (03:37 UTC) |
| 34,000 ft FL340 | 230° at 60 kt | +48 kt | -38 °C | 72 kt | 2 h 04 min | 9:43 pm MDT (03:43 UTC) |
| 39,000 ft FL390 | 240° at 73 kt | +50 kt | -46 °C | 70 kt | 2 h 08 min | 9:47 pm MDT (03:47 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| LND | used from 0 nm out; 96 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° | ||
| RKS | used from 50 nm out; 100 nm from the line | 190/43 | 210/65 3° | 210/57 -9° | 210/56 -21° | 210/47 -33° | 230/63 -37° | 240/77 -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 | no report just now | 5,344 ft | ||||
| SAA Saratoga, WY | 90 nm out, 4 nm east of the line | no report just now | 7,014 ft | ||||
| DWX Dixon, WY | 120 nm out, 20 nm west of the line | no report just now | 6,548 ft | ||||
| HDN Hayden, CO | destination | no report just now | 6,606 ft |
The highest airport on this list sits at 7,014 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At HDN when you get there the forecast at the estimated arrival, 9:29 pm MDT (03:29 UTC)
HDN has no terminal forecast; use the nearest airport that does.
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 HDN 6:33 pm MDT (00:33 UTC) (civil twilight ends 7:01 pm MDT (01:01 UTC)). At 120 knots the arrival at HDN is after sunset there (6:35 pm MDT (00:35 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, Yampa Valley Airport.