Southwest Wyoming Regional to City Of Colorado Springs Municipal RKS → COS
261 nautical miles (300 statute miles) southeast on a straight line, true course 128°, about 115° magnetic at the departure end (variation 13E). At 120 knots that is 1 h 46 min at the quickest height in today's winds (39,000 ft, a 28-knot tailwind), arriving about 9:53 pm MDT (03:53 UTC), after sunset at the destination. Right now RKS is VFR, wind from the south (190°) at 13 knots, gusting to 20; COS is VFR, wind from the south-southwest (210°) 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: 2 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 6W: thunderstorms (a convective SIGMET) up to 34,000 ft, moving from the southwest at 40 knots, until 9:55 pm MDT (03:55 UTC). Near the route, 242 nm along the route.
as issued
WSUS33 KKCI 120155 MKCW WST 120155 CONVECTIVE SIGMET 6W VALID UNTIL 0355Z CO NM FROM 50SSW DEN-30NNE TBE-50SSW CME-50E SJN-20NE DVC-50SSW DEN AREA TS MOV FROM 23040KT. TOPS TO FL340.
- 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 213 nm of the route.
- AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the first 58 nm of the 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 SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 58 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 first 77 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 155 to 213 nm out.
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 RKS.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- E75L at 28,000 ft, 18 nm southwest, 7:31 pm MDT (01:31 UTC): moderate turbulence, remarks: ZDVWC-03. 126 nm along the route, 18 nm southwest of the line.
as filed, and in English
EEO UA /OV EKR085036/TM 0131/FL280/TP E75L/TB MOD/RM ZDVWC-03
- Report
- a routine report filed through EEO
- Where
- 36 nm east (085°) of EKR
- Time
- 01:31 UTC
- Height
- at 28,000 ft
- Aircraft
- E75L
- Turbulence
- moderate
- Remarks
- ZDVWC-03
- B39M at 32,000 ft, 18 nm northeast, 5:58 pm MDT (23:58 UTC): moderate chop turbulence, no icing, remarks: moderate mtw a 30-knot loss of airspeed ZDVWC-14. 145 nm along the route, 18 nm northeast of the line.
as filed, and in English
EEO UA /OV EKR069073/TM 2358/FL320/TP B39M/TB OCNL MOD CHOP/IC NEG/RM MOD MTW +/-30KT ZDVWC-14
- Report
- a routine report filed through EEO
- Where
- 73 nm east (069°) of EKR
- Time
- 23:58 UTC
- Height
- at 32,000 ft
- Aircraft
- B39M
- Turbulence
- occasional moderate chop
- Icing
- none
- Remarks
- moderate mtw a 30-knot loss of airspeed ZDVWC-14
- C650 at 40,000 ft, 38 nm southwest, 5:48 pm MDT (23:48 UTC): moderate turbulence, remarks: ZDVWC-03. 155 nm along the route, 38 nm southwest of the line.
as filed, and in English
ASE UA /OV DBL/TM 2348/FL400/TP C650/TB MOD /RM ZDVWC-03
- Report
- a routine report filed through ASE
- Where
- over DBL
- Time
- 23:48 UTC
- Height
- at 40,000 ft
- Aircraft
- C650
- Turbulence
- moderate
- Remarks
- ZDVWC-03
- BCS1 at 24,000 ft, 35 nm northeast, 7:30 pm MDT (01:30 UTC): moderate turbulence from 22,000 ft to 24,000 ft, remarks: during the climb ZDVWC-05. 193 nm along the route, 35 nm northeast of the line.
as filed, and in English
DEN UA /OV DVV270030/TM 0130/FL240/TP BCS1/TB MOD 220-240/RM DURC ZDVWC-05
- Report
- a routine report filed through DEN
- Where
- 30 nm west (270°) of DVV
- Time
- 01:30 UTC
- Height
- at 24,000 ft
- Aircraft
- BCS1
- Turbulence
- moderate from 22,000 ft to 24,000 ft
- Remarks
- during the climb ZDVWC-05
- UAL2395 at 37,000 ft, 3 nm east, 6:58 pm MDT (00:58 UTC): no turbulence, wind 240° at 70 knots. At the departure end, 3 nm east of the line.
as filed, and in English
ARP UAL2395 4135N 10900W 0058 F370 240/070KT TB NONE SK CLEAR IC NONE
- Report
- a routine report filed through ARP
- UAL796 at 30,000 ft, 39 nm southwest, 6:09 pm MDT (00:09 UTC): light chop turbulence, wind 230° at 42 knots. 97 nm along the route, 39 nm southwest of the line.
as filed, and in English
ARP UAL796 4004N 10755W 0009 F300 230/042KT TB OCNL LGT CHOP IC
- Report
- a routine report filed through ARP
- B38M at 32,000 ft, 49 nm southwest, 5:32 pm MDT (23:32 UTC): light turbulence, no icing, remarks: ZDVWC-04. 116 nm along the route, 49 nm southwest of the line.
as filed, and in English
EEO UA /OV EKR146023/TM 2332/FL320/TP B38M/TB CONS LGT /IC NEG/RM ZDVWC-04
- Report
- a routine report filed through EEO
- Where
- 23 nm southeast (146°) of EKR
- Time
- 23:32 UTC
- Height
- at 32,000 ft
- Aircraft
- B38M
- Turbulence
- continuous light
- Icing
- none
- Remarks
- ZDVWC-04
- B38M at 32,000 ft, 21 nm southwest, 5:27 pm MDT (23:27 UTC): light chop turbulence, no icing, remarks: ZDVWC-03. 145 nm along the route, 21 nm southwest of the line.
as filed, and in English
ASE UA /OV DBL359020/TM 2327/FL320/TP B38M/TB CONS LGT CHOP OCNL MOD CHOP/IC NEG/RM ZDVWC-03
- Report
- a routine report filed through ASE
- Where
- 20 nm north (359°) of DBL
- Time
- 23:27 UTC
- Height
- at 32,000 ft
- Aircraft
- B38M
- Turbulence
- continuous light chop occasional moderate chop
- Icing
- none
- Remarks
- ZDVWC-03
- B738 at 32,000 ft, 8 nm southwest, 7:42 pm MDT (01:42 UTC): light to moderate turbulence up to 30,000 ft, remarks: during the climb ZDVWC-05. 164 nm along the route, 8 nm southwest of the line.
as filed, and in English
EGE UA /OV RLG160014/TM 0142/FL320/TP B738/TB LGT-MOD BLO 300/RM DURC ZDVWC-05
- Report
- a routine report filed through EGE
- Where
- 14 nm south (160°) of RLG
- Time
- 01:42 UTC
- Height
- at 32,000 ft
- Aircraft
- B738
- Turbulence
- light to moderate below 30,000 ft
- Remarks
- during the climb ZDVWC-05
- B737 descending, 47 nm northeast, 7:23 pm MDT (01:23 UTC): no turbulence up to 10,000 ft. 222 nm along the route, 47 nm northeast of the line.
as filed, and in English
DEN UA /OV DEN/TM 0123/FLDURD/TP B737/TB NEG BLO 100
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 01:23 UTC
- Height
- during the descent
- Aircraft
- B737
- Turbulence
- no below 10,000 ft
- A321 descending, 47 nm northeast, 6:26 pm MDT (00:26 UTC): no turbulence up to 10,000 ft. 222 nm along the route, 47 nm northeast of the line.
as filed, and in English
DEN UA /OV DEN/TM 0026/FLDURD/TP A321/TB NEG BLO 100
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 00:26 UTC
- Height
- during the descent
- Aircraft
- A321
- Turbulence
- no below 10,000 ft
- B737 at 6,500 ft, 47 nm northeast, 5:27 pm MDT (23:27 UTC): no turbulence. 222 nm along the route, 47 nm northeast of the line.
as filed, and in English
DEN UA /OV DEN/TM 2327/FL065/TP B737/TB NEG TB ON FINAL RWY17R
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 23:27 UTC
- Height
- at 6,500 ft
- Aircraft
- B737
- Turbulence
- no turbulence on final runway 17R
- E55P at 38,000 ft, 5 nm east, 7:23 pm MDT (01:23 UTC): light chop turbulence, remarks: ZDVWC-05. 232 nm along the route, 5 nm east of the line.
as filed, and in English
DEN UA /OV FQF200040/TM 0123/FL380/TP E55P/TB LGT CHOP/RM ZDVWC-05
- Report
- a routine report filed through DEN
- Where
- 40 nm south (200°) of FQF
- Time
- 01:23 UTC
- Height
- at 38,000 ft
- Aircraft
- E55P
- Turbulence
- light chop
- Remarks
- ZDVWC-05
- GLF6 at 40,000 ft, 12 nm northeast, 6:48 pm MDT (00:48 UTC): light to moderate chop turbulence, remarks: ZDVWC-46. 242 nm along the route, 12 nm northeast of the line.
as filed, and in English
COS UA /OV COS340020/TM 0048/FL400/TP GLF6/TB LGT-MOD CHOP/RM ZDVWC-46
- Report
- a routine report filed through COS
- Where
- 20 nm north (340°) of COS
- Time
- 00:48 UTC
- Height
- at 40,000 ft
- Aircraft
- GLF6
- Turbulence
- light to moderate chop
- Remarks
- ZDVWC-46
4 more routine reports are on the map.
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 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 4 forecast points nearest it (RKS, GJT, DEN, PUB). 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 | 190° at 36 kt | +15 kt | 15 °C | 105 kt | 2 h 29 min | 10:36 pm MDT (04:36 UTC) |
| 9,500 ft | 200° at 38 kt | +14 kt | 13 °C | 106 kt | 2 h 28 min | 10:35 pm MDT (04:35 UTC) |
| 11,500 ft | 210° at 45 kt | +9 kt | 7 °C | 111 kt | 2 h 21 min | 10:28 pm MDT (04:28 UTC) |
| 13,500 ft | 210° at 47 kt | +6 kt | 1 °C | 114 kt | 2 h 17 min | 10:24 pm MDT (04:24 UTC) |
| 15,500 ft | 220° at 48 kt | +3 kt | -3 °C | 117 kt | 2 h 14 min | 10:21 pm MDT (04:21 UTC) |
| 17,500 ft | 220° at 49 kt | 0 | -8 °C | 120 kt | 2 h 10 min | 10:17 pm MDT (04:17 UTC) |
| 18,000 ft FL180 | 220° at 49 kt | −1 kt | -9 °C | 121 kt | 2 h 09 min | 10:16 pm MDT (04:16 UTC) |
| 24,000 ft FL240 | 220° at 53 kt | +1 kt | -21 °C | 119 kt | 2 h 12 min | 10:19 pm MDT (04:19 UTC) |
| 30,000 ft FL300 | 230° at 53 kt | −6 kt | -32 °C | 126 kt | 2 h 04 min | 10:11 pm MDT (04:11 UTC) |
| 34,000 ft FL340 | 240° at 63 kt | −20 kt | -37 °C | 140 kt | 1 h 52 min | 9:59 pm MDT (03:59 UTC) |
| 39,000 ft FL390 | 240° at 67 kt | −28 kt | -46 °C | 148 kt | 1 h 46 min | 9:53 pm MDT (03:53 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| RKS | used from 0 nm out; 24 nm from the line | 190/43 | 210/65 3° | 210/57 -9° | 210/56 -21° | 210/47 -33° | 230/63 -37° | 240/77 -46° | ||
| GJT | used from 97 nm out; 101 nm from the line | 210/40 11° | 210/46 3° | 210/61 -10° | 210/68 -22° | 220/57 -29° | 230/59 -36° | 240/66 -46° | ||
| DEN | used from 145 nm out; 70 nm from the line | 190/31 16° | 210/32 7° | 240/41 -8° | 230/47 -21° | 240/56 -32° | 250/65 -37° | 250/61 -47° | ||
| PUB | used from 242 nm out; 41 nm from the line | 210/24 16° | 210/28 8° | 230/43 -8° | 240/42 -21° | 240/77 -30° | 240/72 -36° | 250/51 -47° |
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 |
|---|---|---|---|---|---|---|---|
| RKS Rock Springs, WY | departure | VFR Sky: a few clouds at 11,000 feet | from the south (190°) at 13 knots, gusting to 20 | 10+ mi | none | 6,764 ft | 7:54 pm MDT (01:54 UTC) |
| DWX Dixon, WY | 77 nm out, 19 nm northeast of the line | VFR | from the east-southeast (120°) at 12 knots | 10+ mi | none | 6,548 ft | 01:55 UTC |
| HDN Hayden, CO | 106 nm out, 1 nm east of the line | VFR Sky: a broken layer at 7,000 feet, overcast at 9,000 feet | from the west (280°) at 4 knots | 10+ mi | 7,000 ft | 6,606 ft | 01:56 UTC |
| GNB Granby, CO | 164 nm out, 22 nm northeast of the line | VFR | from the east-northeast (060°) at 4 knots | 10+ mi | none | 8,207 ft | 01:55 UTC |
| COS Colorado Springs, CO | destination | VFR Sky: scattered clouds at 10,000 feet, a broken layer at 17,000 feet, a broken layer at 20,000 feet | from the south-southwest (210°) at 10 knots | 10+ mi | 17,000 ft | 6,187 ft | 7:54 pm MDT (01:54 UTC) |
The highest airport on this list sits at 8,207 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At COS when you get there the forecast at the estimated arrival, 9:53 pm MDT (03:53 UTC)
Wind from the west-southwest at 15 knots, gusting to 25, visibility more than 6 miles, a broken layer at 10,000 feet, a broken layer at 20,000 feet VFR
At times between Sun 8:00 pm MDT (02:00 UTC) and 10:00 pm MDT (04:00 UTC): wind from the west-southwest at 25 knots, gusting to 35, visibility more than 6 miles, a broken layer at 9,000 feet VFR
The whole forecast for COS
- From Sun 8:00 pm MDT (02:00 UTC): wind from the west-southwest at 15 knots, gusting to 25, visibility more than 6 miles, a broken layer at 10,000 feet, a broken layer at 20,000 feet
- At times between Sun 8:00 pm MDT (02:00 UTC) and 10:00 pm MDT (04:00 UTC): wind from the west-southwest at 25 knots, gusting to 35, visibility more than 6 miles, a broken layer at 9,000 feet
- From Sun 10:00 pm MDT (04:00 UTC): wind from the south at 12 knots, visibility more than 6 miles, scattered clouds at 6,000 feet, a broken layer at 20,000 feet
- From Mon 6:00 am MDT (12:00 UTC): wind from the north-northeast at 8 knots, visibility more than 6 miles, clear skies
- From Mon 11:00 am MDT (17:00 UTC): wind from the south at 15 knots, gusting to 25, visibility more than 6 miles, scattered clouds at 12,000 feet
The forecast for RKS, the departure
- From Sun 6:00 pm MDT (00:00 UTC): wind from the south-southwest at 30 knots, gusting to 45, visibility more than 6 miles, scattered clouds at 6,000 feet, a broken layer at 15,000 feet
- From Sun 10:00 pm MDT (04:00 UTC): wind from the south-southwest at 30 knots, gusting to 45, visibility more than 6 miles, light rain, scattered clouds at 2,000 feet, overcast at 4,000 feet
- From Mon 2:00 am MDT (08:00 UTC): wind from the south-southwest at 10 knots, visibility more than 6 miles, light rain showers, scattered clouds at 2,000 feet, a broken layer at 3,000 feet and more above
- From Mon 5:00 am MDT (11:00 UTC): wind from the southwest at 5 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,000 feet, a broken layer at 3,000 feet and more above
- From Mon 10:00 am MDT (16:00 UTC): wind from the south at 10 knots, visibility more than 6 miles, light rain showers, scattered clouds at 2,000 feet, overcast at 4,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/8784 LAKE GEORGE, CO, Sunday, October 11, 2026 through Tuesday, October 13, 2026 UTC 12 nm from the route, 232 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 13 October · ZDV
- 6/8770 COLORADO SPRINGS, CO, Saturday, October 10, 2026 through Monday, October 12, 2026 UTC 1 nm from the route, 242 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 12 October · ZDV
Daylight
Sunset at RKS 6:40 pm MDT (00:40 UTC), at COS 6:25 pm MDT (00:25 UTC) (civil twilight ends 6:51 pm MDT (00:51 UTC)). At 120 knots the arrival at COS is after sunset there (6:26 pm MDT (00:26 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: Southwest Wyoming Regional, City Of Colorado Springs Municipal.