Aspen-Pitkin County/Sardy Field to Jackson Hole Airport ASE → JAC
316 nautical miles (363 statute miles) northwest on a straight line, true course 328°, about 319° magnetic at the departure end (variation 9E). At 120 knots that is 2 h 16 min at the quickest height in today's winds (8,500 ft, a 19-knot tailwind), arriving about 2:28 am MDT (08:28 UTC), after sunset at the destination. Right now ASE is VFR, wind from the west (260°) at 4 knots; JAC is VFR, wind from the southwest (230°) at 5 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 158 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the first 256 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the first 256 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 276 nm of the route.
- AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 99 to 168 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the last 207 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 ASE.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- urgent E75L at 9,000 ft, 0 nm northeast, 10:30 pm MDT (04:30 UTC): remarks: low-level wind shear + 20K 1000-1500 above ground on approach. At the departure end, 0 nm northeast of the line.
as filed, and in English
ASE UUA /OV ASE/TM 0430/FL090/TP E75L/RM LLWS +/- 20K 1000-1500 AGL ON APCH
- Report
- an urgent report filed through ASE
- Where
- over ASE
- Time
- 04:30 UTC
- Height
- at 9,000 ft
- Aircraft
- E75L
- Remarks
- low-level wind shear + 20K 1000-1500 above ground on approach
- urgent B737 at 7,600 ft, 27 nm northeast, 9:22 pm MDT (03:22 UTC): remarks: low-level wind shear 45 knots crosswind on final. 69 nm along the route, 27 nm northeast of the line.
as filed, and in English
HDN UUA /OV HDN/TM 0322/FL076/TP B737/RM LLWS 45 KTS CROSSWIND ON FINAL
- Report
- an urgent report filed through HDN
- Where
- over HDN
- Time
- 03:22 UTC
- Height
- at 7,600 ft
- Aircraft
- B737
- Remarks
- low-level wind shear 45 knots crosswind on final
- B733 at 20,000 ft, 47 nm south, 9:16 pm MDT (03:16 UTC): light chop turbulence up to 20,000 ft, clear from 20,000 ft to 60,000 ft, remarks: during the climb ZDVWC-12. At the departure end, 47 nm south of the line.
as filed, and in English
GUC UA /OV HBU/TM 0316/FL200/TP B733/SK SKC/TB OCNL LGT CHOP BLO 200/RM DURC ZDVWC-12
- Report
- a routine report filed through GUC
- Where
- over HBU
- Time
- 03:16 UTC
- Height
- at 20,000 ft
- Aircraft
- B733
- Sky
- clear
- Turbulence
- occasional light chop below 20,000 ft
- Remarks
- during the climb ZDVWC-12
- BE20 at 16,000 ft, 24 nm southwest, 9:28 pm MDT (03:28 UTC): light chop turbulence, light rime icing, -3 °C, remarks: ZDVWC-11. 39 nm along the route, 24 nm southwest of the line.
as filed, and in English
RIL UA /OV RIL/TM 0328/FL160/TP BE20/TA M03/TB LGT CHOP/IC LGT RIME/RM ZDVWC-11
- Report
- a routine report filed through RIL
- Where
- over RIL
- Time
- 03:28 UTC
- Height
- at 16,000 ft
- Aircraft
- BE20
- Temperature
- −3 °C
- Turbulence
- light chop
- Icing
- light rime
- Remarks
- ZDVWC-11
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 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 3 forecast points nearest it (GJT, 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 |
|---|---|---|---|---|---|---|
| 8,500 ft | 200° at 35 kt | −19 kt | 6 °C | 139 kt | 2 h 16 min | 2:28 am MDT (08:28 UTC) |
| 10,500 ft | 210° at 36 kt | −14 kt | 4 °C | 134 kt | 2 h 21 min | 2:33 am MDT (08:33 UTC) |
| 12,500 ft | 220° at 39 kt | −9 kt | 0 °C | 129 kt | 2 h 27 min | 2:39 am MDT (08:39 UTC) |
| 14,500 ft | 220° at 40 kt | −10 kt | -4 °C | 130 kt | 2 h 26 min | 2:38 am MDT (08:38 UTC) |
| 16,500 ft | 220° at 40 kt | −11 kt | -8 °C | 131 kt | 2 h 25 min | 2:37 am MDT (08:37 UTC) |
| 18,000 ft FL180 | 220° at 41 kt | −12 kt | -11 °C | 132 kt | 2 h 24 min | 2:36 am MDT (08:36 UTC) |
| 24,000 ft FL240 | 220° at 48 kt | −12 kt | -23 °C | 132 kt | 2 h 24 min | 2:36 am MDT (08:36 UTC) |
| 30,000 ft FL300 | 220° at 54 kt | −18 kt | -28 °C | 138 kt | 2 h 17 min | 2:29 am MDT (08:29 UTC) |
| 34,000 ft FL340 | 220° at 63 kt | −15 kt | -35 °C | 135 kt | 2 h 20 min | 2:32 am MDT (08:32 UTC) |
| 39,000 ft FL390 | 230° at 62 kt | −10 kt | -45 °C | 130 kt | 2 h 26 min | 2:38 am MDT (08:38 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| GJT | used from 0 nm out; 69 nm from the line | 210/43 7° | 230/45 1° | 220/49 -12° | 220/62 -22° | 220/59 -28° | 230/60 -33° | 220/55 -45° | ||
| RKS | used from 99 nm out; 51 nm from the line | 200/41 | 220/44 1° | 220/35 -11° | 220/46 -24° | 210/53 -27° | 220/62 -35° | 230/61 -44° | ||
| LND | used from 197 nm out; 46 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° |
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 |
|---|---|---|---|---|---|---|---|
| ASE Aspen, CO | departure | VFR Sky: a few clouds at 6,000 feet, a broken layer at 9,000 feet, overcast at 11,000 feet Weather: light rain | from the west (260°) at 4 knots | 10+ mi | 9,000 ft | 7,837 ft | 11:53 pm MDT (05:53 UTC) |
| EGE Eagle, CO | 20 nm out, 12 nm northeast of the line, tower | VFR Sky: scattered clouds at 9,000 feet, overcast at 11,000 feet | from the west-northwest (290°) at 6 knots | 10+ mi | 11,000 ft | 6,547 ft | 05:56 UTC |
| EEO Meeker, CO | 69 nm out, 13 nm southwest of the line | VFR Sky: a few clouds at 5,500 feet, scattered clouds at 7,000 feet, a broken layer at 10,000 feet | from the south-southwest (200°) at 9 knots, gusting to 22 | 10+ mi | 10,000 ft | 6,415 ft | 05:53 UTC |
| RKS Rock Springs, WY | 178 nm out, 8 nm southwest of the line | marginal VFR Sky: a broken layer at 1,700 feet, overcast at 2,400 feet Weather: light rain | from the west-southwest (250°) at 11 knots | 10+ mi | 1,700 ft | 6,764 ft | 05:54 UTC |
| PNA Pinedale, WY | 256 nm out, 7 nm east of the line | VFR Sky: a broken layer at 6,000 feet, overcast at 7,000 feet Weather: light drizzle | from the west-northwest (300°) at 4 knots | 10+ mi | 6,000 ft | 7,096 ft | 05:55 UTC |
| JAC Jackson, WY | destination | VFR Sky: overcast at 5,500 feet | from the southwest (230°) at 5 knots | 10+ mi | 5,500 ft | 6,451 ft | 11:56 pm MDT (05:56 UTC) |
The highest airport on this list sits at 7,837 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At JAC when you get there the forecast at the estimated arrival, 2:28 am MDT (08:28 UTC)
Wind from the south at 7 knots, visibility more than 6 miles, showers nearby, scattered clouds at 1,500 feet, overcast at 2,500 feet marginal VFR
The whole forecast for JAC
- From Mon 12:00 am MDT (06:00 UTC): wind from the south at 7 knots, visibility more than 6 miles, showers nearby, scattered clouds at 1,500 feet, overcast at 2,500 feet
- From Mon 7:00 am MDT (13:00 UTC): wind from the north-northeast at 5 knots, visibility 6 miles, light rain showers, scattered clouds at 1,000 feet, overcast at 1,800 feet
- From Mon 3:00 pm MDT (21:00 UTC): wind from the southwest at 7 knots, visibility more than 6 miles, scattered clouds at 2,000 feet, overcast at 3,500 feet
- 30% chance between Mon 3:00 pm MDT (21:00 UTC) and 9:00 pm MDT (03:00 UTC): visibility 5 miles, light rain showers, a broken layer at 2,500 feet
- From Mon 9:00 pm MDT (03:00 UTC): wind from the north-northeast at 4 knots, visibility 6 miles, light rain showers, scattered clouds at 2,000 feet, overcast at 3,000 feet
The forecast for ASE, the departure
- From Mon 12:00 am MDT (06:00 UTC): wind from the south-southeast at 6 knots, visibility more than 6 miles, low-level wind shear, a broken layer at 8,000 feet, a broken layer at 10,000 feet
- At times between Mon 12:00 am MDT (06:00 UTC) and 4:00 am MDT (10:00 UTC): visibility 4 miles, light rain showers, a broken layer at 6,000 feet
- From Mon 5:00 am MDT (11:00 UTC): wind from the south at 6 knots, visibility more than 6 miles, a few clouds at 5,000 feet, scattered clouds at 12,000 feet
- From Mon 9:00 am MDT (15:00 UTC): wind from the south at 9 knots, visibility more than 6 miles, a few clouds at 4,500 feet, a few clouds at 25,000 feet
- From Mon 1:00 pm MDT (19:00 UTC): wind from the south-southwest at 11 knots, gusting to 25, visibility more than 6 miles, a few clouds at 7,000 feet, a few clouds at 25,000 feet
- From Mon 6:00 pm MDT (00:00 UTC): wind from the southwest at 7 knots, visibility more than 6 miles, a few clouds at 6,000 feet, a few clouds at 20,000 feet
- 30% chance between Mon 6:00 pm MDT (00:00 UTC) and 12:00 am MDT (06:00 UTC): visibility 4 miles, light rain showers, a broken layer at 6,000 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 ASE 6:31 pm MDT (00:31 UTC), at JAC 6:43 pm MDT (00:43 UTC) (civil twilight ends 7:12 pm MDT (01:12 UTC)). At 120 knots the arrival at JAC is before sunrise there (7:33 am MDT (13:33 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: Aspen-Pitkin County/Sardy Field, Jackson Hole Airport.