Yampa Valley Airport to Casper/Natrona County International HDN → CPR
149 nautical miles (172 statute miles) north on a straight line, true course 013°, about 003° magnetic at the departure end (variation 10E). At 120 knots that is 50 min at the quickest height in today's winds (24,000 ft, a 58-knot tailwind), arriving about 9:44 am MDT (15:44 UTC). Right now HDN is VFR, wind variable at 4 knots; CPR is IFR, wind from the north (350°) at 9 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: 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
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the whole route.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the first 100 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 100 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 10 to 60 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 20 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 HDN.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- E175L at 10,000 ft, 10 nm southeast, 8:05 am MDT (14:05 UTC): overcast from 10,500 ft to 11,500 ft. At the destination end, 10 nm southeast of the line.
as filed, and in English
CPR UA /OV CPR110010/TM 1405/FL100/TP E175L/SK OVC105-TOP115
- Report
- a routine report filed through CPR
- Where
- 10 nm east (110°) of CPR
- Time
- 14:05 UTC
- Height
- at 10,000 ft
- Aircraft
- E175L
- Sky
- overcast from 10,500 ft, tops 11,500 ft
Winds aloft along the route, and the time en route the forecast for use 14:00–21:00 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 2 forecast points nearest it (RKS, LND). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 7,500 ft | 210° at 15 kt | −14 kt | 3 °C | 134 kt | 1 h 07 min | 10:01 am MDT (16:01 UTC) |
| 9,500 ft | 220° at 16 kt | −15 kt | 2 °C | 135 kt | 1 h 06 min | 10:00 am MDT (16:00 UTC) |
| 11,500 ft | 220° at 19 kt | −17 kt | 0 °C | 137 kt | 1 h 05 min | 9:59 am MDT (15:59 UTC) |
| 13,500 ft | 220° at 23 kt | −20 kt | -4 °C | 140 kt | 1 h 04 min | 9:58 am MDT (15:58 UTC) |
| 15,500 ft | 220° at 26 kt | −24 kt | -9 °C | 144 kt | 1 h 02 min | 9:56 am MDT (15:56 UTC) |
| 17,500 ft | 220° at 30 kt | −28 kt | -13 °C | 148 kt | 1 h | 9:54 am MDT (15:54 UTC) |
| 18,000 ft FL180 | 220° at 31 kt | −29 kt | -14 °C | 149 kt | 1 h | 9:54 am MDT (15:54 UTC) |
| 24,000 ft FL240 | 220° at 65 kt | −58 kt | -25 °C | 178 kt | 50 min | 9:44 am MDT (15:44 UTC) |
| 30,000 ft FL300 | 220° at 67 kt | −59 kt | -30 °C | 179 kt | 50 min | 9:44 am MDT (15:44 UTC) |
| 34,000 ft FL340 | 220° at 67 kt | −60 kt | -39 °C | 180 kt | 50 min | 9:44 am MDT (15:44 UTC) |
| 39,000 ft FL390 | 220° at 55 kt | −49 kt | -44 °C | 169 kt | 53 min | 9:47 am MDT (15:47 UTC) |
Based on data from the 12th at 12:00 UTC; valid on the 12th at 18:00 UTC for use 14:00 to 21:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| RKS | used from 0 nm out; 99 nm from the line | 210/15 | 220/17 -1° | 220/32 -14° | 220/69 -25° | 220/70 -30° | 220/70 -39° | 220/56 -44° | ||
| LND | used from 100 nm out; 96 nm from the line | 220/16 3° | 230/26 -1° | 210/30 -14° | 220/57 -26° | 220/60 -31° | 220/62 -38° | 220/52 -44° |
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 |
|---|---|---|---|---|---|---|---|
| HDN Hayden, CO | departure | VFR Sky: a few clouds at 7,000 feet, overcast at 10,000 feet | variable at 4 knots | 10+ mi | 10,000 ft | 6,606 ft | 7:56 am MDT (13:56 UTC) |
| DWX Dixon, WY | 30 nm out, 20 nm west of the line | VFR Sky: scattered clouds at 9,000 feet, scattered clouds at 12,000 feet | from the south-southeast (150°) at 10 knots, gusting to 15 | 10+ mi | none | 6,548 ft | 14:35 UTC |
| SAA Saratoga, WY | 60 nm out, 4 nm east of the line | VFR Sky: scattered clouds at 4,300 feet, scattered clouds at 5,500 feet, scattered clouds at 6,500 feet | from the southeast (130°) at 4 knots | 10+ mi | none | 7,014 ft | 14:30 UTC |
| CPR Casper, WY | destination | IFR Sky: a broken layer at 600 feet, a broken layer at 4,900 feet | from the north (350°) at 9 knots | 10+ mi | 600 ft | 5,344 ft | 7:53 am MDT (13:53 UTC) |
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 CPR when you get there the forecast at the estimated arrival, 9:44 am MDT (15:44 UTC)
Wind from the north at 8 knots, visibility more than 6 miles, a broken layer at 600 feet, overcast at 5,000 feet IFR
The whole forecast for CPR
- From Mon 8:00 am MDT (14:00 UTC): wind from the north at 8 knots, visibility more than 6 miles, a broken layer at 600 feet, overcast at 5,000 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
The forecast for HDN, the departure
- From Mon 6:00 am MDT (12:00 UTC): wind from the south at 5 knots, visibility more than 6 miles, a broken layer at 5,000 feet, overcast at 7,000 feet
- 30% chance between Mon 6:00 am MDT (12:00 UTC) and 12:00 pm MDT (18:00 UTC): visibility 4 miles, light rain showers, a broken layer at 4,000 feet
- From Mon 12:00 pm MDT (18:00 UTC): wind from the southwest at 10 knots, gusting to 20, visibility more than 6 miles, scattered clouds at 4,000 feet, a broken layer at 8,000 feet
- From Mon 6:00 pm MDT (00:00 UTC): wind from the north-northeast at 6 knots, visibility more than 6 miles, a few clouds at 6,000 feet, scattered clouds at 11,000 feet
- 30% chance between Mon 10:00 pm MDT (04:00 UTC) and 12:00 am MDT (06:00 UTC): visibility 4 miles, light rain showers, a broken layer at 5,000 feet
- From Tue 12:00 am MDT (06:00 UTC): wind from the east-southeast at 6 knots, visibility more than 6 miles, a broken layer at 6,000 feet, overcast at 11,000 feet
- 30% chance between Tue 12:00 am MDT (06:00 UTC) and 3:00 am MDT (09:00 UTC): visibility 4 miles, light rain showers, a broken layer at 4,000 feet
- From Tue 3:00 am MDT (09:00 UTC): wind light and variable, visibility more than 6 miles, a broken layer at 2,500 feet
- 30% chance between Tue 3:00 am MDT (09:00 UTC) and 6:00 am MDT (12:00 UTC): visibility 4 miles, light rain showers, a broken layer at 2,000 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 HDN 6:32 pm MDT (00:32 UTC), at CPR 6:26 pm MDT (00:26 UTC) (civil twilight ends 6:55 pm MDT (00:55 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: Yampa Valley Airport, Casper/Natrona County International.