Cheyenne Rgnl/Jerry Olson Field to Friedman Memorial CYS → SUN
444 nautical miles (511 statute miles) west on a straight line, true course 292°, about 282° magnetic at the departure end (variation 10E). At 120 knots that is 3 h 52 min at the quickest height in today's winds (8,500 ft, a 5-knot headwind), arriving about 12:32 pm MDT (18:32 UTC). Right now CYS is VFR, wind calm; SUN is low IFR, wind from the southeast (130°) at 10 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 W27W: thunderstorms (a convective SIGMET) up to 27,000 ft, moving from the west at 45 knots, until 9:55 am MDT (15:55 UTC). Over the route from 276 to 296 nm out.
as issued
WSUS33 KKCI 121355 MKCW WST 121355 CONVECTIVE SIGMET 27W VALID UNTIL 1555Z WY UT ID FROM 40E PIH-20NW BPI-50E SLC-20SW SLC-40E PIH DMSHG AREA TS MOV FROM 26045KT. TOPS TO FL270.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the first 138 nm of the route.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the route from 10 to 99 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 365 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the last 335 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 last 197 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 CYS.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- B737 at 16,000 ft, 49 nm south, 6:23 am MDT (12:23 UTC): moderate turbulence, remarks: during the descent. At the departure end, 49 nm south of the line.
as filed, and in English
DEN UA /OV DEN320040/TM 1223/FL160/TP B737/TB MOD/RM DURD
- Report
- a routine report filed through DEN
- Where
- 40 nm northwest (320°) of DEN
- Time
- 12:23 UTC
- Height
- at 16,000 ft
- Aircraft
- B737
- Turbulence
- moderate
- Remarks
- during the descent
- CRJ2 at 24,000 ft, 44 nm southwest, 5:45 am MDT (11:45 UTC): no turbulence, remarks: ZDVWC-13. At the departure end, 44 nm southwest of the line.
as filed, and in English
DEN UA /OV DEN314057/TM 1145/FL240/TP CRJ2/TB NEG/RM ZDVWC-13
- Report
- a routine report filed through DEN
- Where
- 57 nm northwest (314°) of DEN
- Time
- 11:45 UTC
- Height
- at 24,000 ft
- Aircraft
- CRJ2
- Turbulence
- none
- Remarks
- ZDVWC-13
- CRJ2 at 19,000 ft, 47 nm southwest, 5:49 am MDT (11:49 UTC): no turbulence, remarks: ZDVWC-13. 30 nm along the route, 47 nm southwest of the line.
as filed, and in English
DEN UA /OV DEN304074/TM 1149/FL190/TP CRJ2/TB NEG/RM ZDVWC-13
- Report
- a routine report filed through DEN
- Where
- 74 nm northwest (304°) of DEN
- Time
- 11:49 UTC
- Height
- at 19,000 ft
- Aircraft
- CRJ2
- Turbulence
- none
- Remarks
- ZDVWC-13
- BCS1 at 25,000 ft, 17 nm south, 6:22 am MDT (12:22 UTC): a routine report with nothing remarked on. 365 nm along the route, 17 nm south of the line.
as filed, and in English
PIH UA /OV PIH/TM 1222/FL250/TP BCS1/SK TOP 265/ZLC
- Report
- a routine report filed through PIH
- Where
- over PIH
- Time
- 12:22 UTC
- Height
- at 25,000 ft
- Aircraft
- BCS1
- Sky
- top 26,500 ft; zlc
- CRJ7 at 4,800 ft, 14 nm south, 6:10 am MDT (12:10 UTC): overcast above 4,800 ft, remarks: during the descent runway 21 pih. 365 nm along the route, 14 nm south of the line.
as filed, and in English
PIH UA /OV KPIH/TM 1210/FL048/TP CRJ7/SK OVC048-TOPUNKN/RM DURD RY21 PIH
- Report
- a routine report filed through PIH
- Where
- over KPIH
- Time
- 12:10 UTC
- Height
- at 4,800 ft
- Aircraft
- CRJ7
- Sky
- overcast from 4,800 ft, tops unknown
- Remarks
- during the descent runway 21 pih
- MU2 at 12,000 ft, 0 nm northwest, 8:07 am MDT (14:07 UTC): a routine report with nothing remarked on. At the destination end, 0 nm northwest of the line.
as filed, and in English
SUN UA /OV SUN/TM 1407/FL120/TP MU2/SK BASE 055 TOP 118 /ZLC
- Report
- a routine report filed through SUN
- Where
- over SUN
- Time
- 14:07 UTC
- Height
- at 12,000 ft
- Aircraft
- MU2
- Sky
- base 5,500 ft top 11,800 ft; zlc
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 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 4 forecast points nearest it (BFF, RKS, LND, PIH). 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 | 220° at 12 kt | +5 kt | 3 °C | 115 kt | 3 h 52 min | 12:32 pm MDT (18:32 UTC) |
| 10,500 ft | 220° at 17 kt | +6 kt | -1 °C | 114 kt | 3 h 54 min | 12:34 pm MDT (18:34 UTC) |
| 12,500 ft | 220° at 22 kt | +7 kt | -3 °C | 113 kt | 3 h 56 min | 12:36 pm MDT (18:36 UTC) |
| 14,500 ft | 220° at 28 kt | +8 kt | -7 °C | 112 kt | 3 h 58 min | 12:38 pm MDT (18:38 UTC) |
| 16,500 ft | 210° at 34 kt | +9 kt | -12 °C | 111 kt | 4 h | 12:40 pm MDT (18:40 UTC) |
| 18,000 ft FL180 | 210° at 39 kt | +10 kt | -15 °C | 110 kt | 4 h 02 min | 12:42 pm MDT (18:42 UTC) |
| 24,000 ft FL240 | 210° at 59 kt | +13 kt | -26 °C | 107 kt | 4 h 09 min | 12:49 pm MDT (18:49 UTC) |
| 30,000 ft FL300 | 220° at 64 kt | +23 kt | -31 °C | 97 kt | 4 h 35 min | 1:15 pm MDT (19:15 UTC) |
| 34,000 ft FL340 | 220° at 64 kt | +23 kt | -37 °C | 97 kt | 4 h 35 min | 1:15 pm MDT (19:15 UTC) |
| 39,000 ft FL390 | 220° at 55 kt | +20 kt | -43 °C | 100 kt | 4 h 26 min | 1:06 pm MDT (19:06 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| BFF | used from 0 nm out; 85 nm from the line | 310/15 | 280/27 8° | 250/27 2° | 230/30 -12° | 240/52 -22° | 250/66 -32° | 240/78 -37° | 240/76 -43° | |
| RKS | used from 49 nm out; 122 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 148 nm out; 42 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° | ||
| PIH | used from 296 nm out; 44 nm from the line | L/V | 180/8 -1° | 190/21 -6° | 210/56 -18° | 190/64 -28° | 210/68 -31° | 210/60 -36° | 210/54 -42° |
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 |
|---|---|---|---|---|---|---|---|
| CYS Cheyenne, WY | departure | VFR | calm | 10+ mi | none | 6,159 ft | 7:53 am MDT (13:53 UTC) |
| LAR Laramie, WY | 39 nm out, 5 nm southwest of the line | VFR | from the southwest (220°) at 11 knots, gusting to 20 | 10+ mi | none | 7,283 ft | 13:53 UTC |
| RWL Rawlins, WY | 118 nm out, 4 nm southeast of the line | VFR | from the south (180°) at 5 knots | 10+ mi | none | 6,816 ft | 13:53 UTC |
| BPI Big Piney, WY | 256 nm out, 5 nm east of the line | VFR Sky: overcast at 3,300 feet | from the south-southeast (150°) at 8 knots | 10+ mi | 3,300 ft | 6,993 ft | 13:53 UTC |
| AFO Afton, WY | 286 nm out, 5 nm southwest of the line | VFR Sky: scattered clouds at 700 feet, a broken layer at 3,200 feet, overcast at 7,500 feet Weather: nearby thunderstorms rain | from the southwest (220°) at 14 knots, gusting to 23 | 7 mi | 3,200 ft | 6,220 ft | 14:15 UTC |
| PIH Pocatello, ID | 365 nm out, 14 nm south of the line, tower | VFR Sky: scattered clouds at 1,400 feet, a broken layer at 3,100 feet, overcast at 5,000 feet Weather: light rain | from the south (180°) at 6 knots | 10+ mi | 3,100 ft | 4,451 ft | 13:53 UTC |
| AOC Arco, ID | 404 nm out, 17 nm north of the line | no report just now | 5,334 ft | ||||
| SUN Hailey, ID | destination | low IFR Sky: a broken layer at 400 feet, overcast at 900 feet Weather: light rain | from the southeast (130°) at 10 knots | 4 mi | 400 ft | 5,319 ft | 7:47 am MDT (13:47 UTC) |
The highest airport on this list sits at 7,283 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At SUN when you get there the forecast at the estimated arrival, 12:32 pm MDT (18:32 UTC)
Wind light and variable, visibility 6 miles, light rain showers, a broken layer at 400 feet, overcast at 2,000 feet low IFR
The whole forecast for SUN
- From Mon 6:00 am MDT (12:00 UTC): wind light and variable, visibility 6 miles, light rain showers, a broken layer at 400 feet, overcast at 2,000 feet
- From Mon 1:00 pm MDT (19:00 UTC): wind from the south-southeast at 6 knots, visibility more than 6 miles, showers nearby, a few clouds at 1,200 feet, scattered clouds at 2,500 feet and more above
- From Mon 10:00 pm MDT (04:00 UTC): wind from the west-northwest at 7 knots, visibility more than 6 miles, showers nearby, scattered clouds at 3,000 feet, a broken layer at 5,000 feet and more above
The forecast for CYS, the departure
- From Mon 6:00 am MDT (12:00 UTC): wind from the west-southwest at 8 knots, visibility more than 6 miles, a few clouds at 9,000 feet, a few clouds at 25,000 feet
- From Mon 8:30 am MDT (14:30 UTC): wind from the west at 16 knots, gusting to 30, visibility more than 6 miles, a few clouds at 25,000 feet
- From Mon 11:00 am MDT (17:00 UTC): wind from the southwest at 13 knots, gusting to 22, visibility more than 6 miles, scattered clouds at 7,000 feet, scattered clouds at 25,000 feet
- From Mon 6:00 pm MDT (00:00 UTC): wind from the northeast at 15 knots, gusting to 25, visibility more than 6 miles, a broken layer at 7,000 feet, overcast at 11,000 feet
- From Mon 10:00 pm MDT (04:00 UTC): wind from the northeast at 10 knots, visibility more than 6 miles, showers nearby, a broken layer at 4,000 feet, overcast at 5,000 feet
- From Tue 4:00 am MDT (10:00 UTC): wind light and variable, visibility 3 miles, mist, fog nearby, a broken layer at 1,000 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 CYS 6:21 pm MDT (00:21 UTC), at SUN 6:57 pm MDT (00:57 UTC) (civil twilight ends 7:26 pm MDT (01:26 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: Cheyenne Rgnl/Jerry Olson Field, Friedman Memorial.