City Of Colorado Springs Municipal to Casper/Natrona County International COS → CPR
259 nautical miles (298 statute miles) north on a straight line, true course 343°, about 335° magnetic at the departure end (variation 8E). At 120 knots that is 1 h 45 min at the quickest height in today's winds (8,500 ft, a 28-knot tailwind), arriving about 9:23 pm MDT (03:23 UTC), after sunset at the destination. Right now COS is VFR, wind from the west-southwest (240°) at 14 knots, gusting to 25; CPR is VFR, wind from the north-northeast (030°) 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: 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 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 last 70 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.
- 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). Near the route, 110 nm along the route.
- 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 last 139 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 COS.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- urgent CRJ2 at 7,000 ft, 2 nm northeast, 7:04 pm MDT (01:04 UTC): moderate turbulence, remarks: low-level wind shear dept RY03 gain/loss unknown. At the destination end, 2 nm northeast of the line.
as filed, and in English
CPR UUA /OV CPR035002/TM 0104/FL070/TP CRJ2/TB CONT MOD TURB/RM LLWS DEPT RY03 GAIN/LOSS UNKN
- Report
- an urgent report filed through CPR
- Where
- 2 nm northeast (035°) of CPR
- Time
- 01:04 UTC
- Height
- at 7,000 ft
- Aircraft
- CRJ2
- Turbulence
- continuous moderate turbulence
- Remarks
- low-level wind shear dept RY03 gain/loss unknown
- GLF5 at 45,000 ft, 8 nm northeast, 4:44 pm MDT (22:44 UTC): moderate turbulence, remarks: ZDVWC-46. 20 nm along the route, 8 nm northeast of the line.
as filed, and in English
COS UA /OV COS350025/TM 2244/FL450/TP GLF5/TB MOD /RM ZDVWC-46
- Report
- a routine report filed through COS
- Where
- 25 nm north (350°) of COS
- Time
- 22:44 UTC
- Height
- at 45,000 ft
- Aircraft
- GLF5
- Turbulence
- moderate
- Remarks
- ZDVWC-46
- BCS3 at 24,000 ft, 9 nm northeast, 5:28 pm MDT (23:28 UTC): moderate turbulence from 22,000 ft to 24,000 ft, remarks: during the descent. 100 nm along the route, 9 nm northeast of the line.
as filed, and in English
DEN UA /OV DEN320045/TM 2328/FL240/TP BCS3/TB MOD 240-220/RM DURD
- Report
- a routine report filed through DEN
- Where
- 45 nm northwest (320°) of DEN
- Time
- 23:28 UTC
- Height
- at 24,000 ft
- Aircraft
- BCS3
- Turbulence
- moderate from 24,000 ft to 22,000 ft
- Remarks
- during the descent
- B39M at 32,000 ft, 46 nm west, 5:58 pm MDT (23:58 UTC): moderate chop turbulence, no icing, remarks: moderate mtw a 30-knot loss of airspeed ZDVWC-14. 110 nm along the route, 46 nm west 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
- CRJ2 at 19,000 ft, 20 nm west, 6:47 pm MDT (00:47 UTC): moderate chop turbulence, remarks: ZDVWC-13. 129 nm along the route, 20 nm west of the line.
as filed, and in English
EGE UA /OV RLG010052/TM 0047/FL190/TP CRJ2/TB COSN MOD CHOP/RM ZDVWC-13
- Report
- a routine report filed through EGE
- Where
- 52 nm north (010°) of RLG
- Time
- 00:47 UTC
- Height
- at 19,000 ft
- Aircraft
- CRJ2
- Turbulence
- cosn moderate chop
- Remarks
- ZDVWC-13
- BE9L at 21,000 ft, 32 nm east, 5:22 pm MDT (23:22 UTC): light chop turbulence above 21,000 ft, moderate icing above 21,000 ft, -21 °C, remarks: zdvwc. 219 nm along the route, 32 nm east of the line.
as filed, and in English
DGW UA /OV IIP200020/TM 2322/FL210/TP BE9L/SK BASE 200/TA M21/TB OCNL LGT CHOP 210/IC MOD MIX 210/RM ZDVWC
- Report
- a routine report filed through DGW
- Where
- 20 nm south (200°) of IIP
- Time
- 23:22 UTC
- Height
- at 21,000 ft
- Aircraft
- BE9L
- Sky
- base 20,000 ft
- Temperature
- −21 °C
- Turbulence
- occasional light chop at 21,000 ft
- Icing
- moderate mix at 21,000 ft
- Remarks
- zdvwc
- A21N at 31,000 ft, 33 nm southeast, 6:24 pm MDT (00:24 UTC): remarks: mountain wave +/-10-20KT ZDVWC-29. At the departure end, 33 nm southeast of the line.
as filed, and in English
PUB UA /OV PUB/TM 0024/FL310/TP A21N/RM MTN WAVE +/-10-20KT ZDVWC-29
- Report
- a routine report filed through PUB
- Where
- over PUB
- Time
- 00:24 UTC
- Height
- at 31,000 ft
- Aircraft
- A21N
- Remarks
- mountain wave +/-10-20KT ZDVWC-29
- CL35 at 43,000 ft, 47 nm southwest, 6:21 pm MDT (00:21 UTC): remarks: mtw +/-300FT zdvwc. At the departure end, 47 nm southwest of the line.
as filed, and in English
PUB UA /OV PUB250040/TM 0021/FL430/TP CL35/RM MTW +/-300FT ZDVWC
- Report
- a routine report filed through PUB
- Where
- 40 nm west (250°) of PUB
- Time
- 00:21 UTC
- Height
- at 43,000 ft
- Aircraft
- CL35
- Remarks
- mtw +/-300FT zdvwc
- B737 at 25,000 ft, 10 nm southwest, 6:29 pm MDT (00:29 UTC): light rime icing, 0 °C, remarks: during the climb ZDVWC-29. At the departure end, 10 nm southwest of the line.
as filed, and in English
COS UA /OV BRK242015/TM 0029/FL250/TP B737/SK TOP280/TA 00/IC LGT RIME/RM DURC ZDVWC-29
- Report
- a routine report filed through COS
- Where
- 15 nm southwest (242°) of BRK
- Time
- 00:29 UTC
- Height
- at 25,000 ft
- Aircraft
- B737
- Sky
- TOP280
- Temperature
- 0 °C
- Icing
- light rime
- Remarks
- during the climb ZDVWC-29
- E55P at 38,000 ft, 11 nm west, 7:23 pm MDT (01:23 UTC): light chop turbulence, remarks: ZDVWC-05. 20 nm along the route, 11 nm west 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, 2 nm east, 6:48 pm MDT (00:48 UTC): light to moderate chop turbulence, remarks: ZDVWC-46. 20 nm along the route, 2 nm east 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
- B737 at 14,000 ft, 14 nm northeast, 6:20 pm MDT (00:20 UTC): light to moderate turbulence, remarks: light to moderate from 14,000 ft to 16,000 ft occn light above 16,000 ft. 30 nm along the route, 14 nm northeast of the line.
as filed, and in English
DEN UA /OV DEN170025/TM 0020/FL140/TP B737/TB LGT-MOD/RM LGT-MOD 140-160 OCCN LGT ABOVE 160
- Report
- a routine report filed through DEN
- Where
- 25 nm south (170°) of DEN
- Time
- 00:20 UTC
- Height
- at 14,000 ft
- Aircraft
- B737
- Turbulence
- light to moderate
- Remarks
- light to moderate from 14,000 ft to 16,000 ft occn light above 16,000 ft
- A320 at 8,000 ft, 49 nm east, 5:42 pm MDT (23:42 UTC): light chop turbulence from 8,000 ft to 16,000 ft, remarks: during the climb. 50 nm along the route, 49 nm east of the line.
as filed, and in English
DEN UA /OV DEN080030/TM 2342/FL080/TP A320/TB LGT CHOP 080-160/RM DURC
- Report
- a routine report filed through DEN
- Where
- 30 nm east (080°) of DEN
- Time
- 23:42 UTC
- Height
- at 8,000 ft
- Aircraft
- A320
- Turbulence
- light chop from 8,000 ft to 16,000 ft
- Remarks
- during the climb
- B737 descending, 20 nm east, 7:23 pm MDT (01:23 UTC): no turbulence up to 10,000 ft. 60 nm along the route, 20 nm east 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
5 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 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 (DEN, BFF, 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 | 180° at 31 kt | −28 kt | 14 °C | 148 kt | 1 h 45 min | 9:23 pm MDT (03:23 UTC) |
| 10,500 ft | 190° at 33 kt | −27 kt | 10 °C | 147 kt | 1 h 46 min | 9:24 pm MDT (03:24 UTC) |
| 12,500 ft | 210° at 35 kt | −25 kt | 5 °C | 145 kt | 1 h 47 min | 9:25 pm MDT (03:25 UTC) |
| 14,500 ft | 220° at 36 kt | −22 kt | 0 °C | 142 kt | 1 h 49 min | 9:27 pm MDT (03:27 UTC) |
| 16,500 ft | 220° at 39 kt | −18 kt | -4 °C | 138 kt | 1 h 53 min | 9:31 pm MDT (03:31 UTC) |
| 18,000 ft FL180 | 230° at 41 kt | −16 kt | -8 °C | 136 kt | 1 h 54 min | 9:32 pm MDT (03:32 UTC) |
| 24,000 ft FL240 | 220° at 45 kt | −21 kt | -21 °C | 141 kt | 1 h 50 min | 9:28 pm MDT (03:28 UTC) |
| 30,000 ft FL300 | 230° at 49 kt | −19 kt | -33 °C | 139 kt | 1 h 52 min | 9:30 pm MDT (03:30 UTC) |
| 34,000 ft FL340 | 250° at 60 kt | −7 kt | -38 °C | 127 kt | 2 h 02 min | 9:40 pm MDT (03:40 UTC) |
| 39,000 ft FL390 | 250° at 61 kt | −3 kt | -47 °C | 123 kt | 2 h 06 min | 9:44 pm MDT (03:44 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| DEN | used from 0 nm out; 41 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° | ||
| BFF | used from 149 nm out; 103 nm from the line | 120/24 | 180/31 13° | 210/26 7° | 230/25 -7° | 240/41 -20° | 230/52 -36° | 250/56 -41° | 260/57 -45° | |
| LND | used from 199 nm out; 115 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° |
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 |
|---|---|---|---|---|---|---|---|
| COS Colorado Springs, CO | departure | VFR Sky: a few clouds at 7,000 feet, a broken layer at 10,000 feet, a broken layer at 17,000 feet, a broken layer at 20,000 feet | from the west-southwest (240°) at 14 knots, gusting to 25 | 10+ mi | 10,000 ft | 6,187 ft | 6:54 pm MDT (00:54 UTC) |
| BJC Denver, CO | 70 nm out, 2 nm east of the line, tower | VFR | from the north (350°) at 5 knots | 10+ mi | none | 5,673 ft | 00:45 UTC |
| FNL Fort Collins/Loveland, CO | 100 nm out, 16 nm east of the line, tower | VFR | from the south-southwest (200°) at 7 knots | 10+ mi | none | 5,020 ft | 00:56 UTC |
| LAR Laramie, WY | 159 nm out, 4 nm east of the line | VFR Sky: a few clouds at 12,000 feet | from the south-southeast (150°) at 12 knots | 10+ mi | none | 7,283 ft | 00:53 UTC |
| CPR Casper, WY | destination | VFR Sky: scattered clouds at 10,000 feet, a broken layer at 11,000 feet | from the north-northeast (030°) at 5 knots | 10+ mi | 11,000 ft | 5,344 ft | 7:08 pm MDT (01:08 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 CPR when you get there the forecast at the estimated arrival, 9:23 pm MDT (03:23 UTC)
Wind from the east-northeast at 12 knots, gusting to 18, visibility more than 6 miles, scattered clouds at 4,000 feet, overcast at 8,000 feet VFR
At times between Sun 6:00 pm MDT (00:00 UTC) and 10:00 pm MDT (04:00 UTC): visibility 5 miles, light rain, a broken layer at 3,000 feet marginal VFR
The whole forecast for CPR
- From Sun 6:00 pm MDT (00:00 UTC): wind from the east-northeast at 12 knots, gusting to 18, visibility more than 6 miles, scattered clouds at 4,000 feet, overcast at 8,000 feet
- At times between Sun 6:00 pm MDT (00:00 UTC) and 10:00 pm MDT (04:00 UTC): visibility 5 miles, light rain, a broken layer at 3,000 feet
- From Sun 10:00 pm MDT (04:00 UTC): wind from the south-southwest at 12 knots, gusting to 22, visibility more than 6 miles, a broken layer at 10,000 feet
- 30% chance between Sun 10:00 pm MDT (04:00 UTC) and 4:00 am MDT (10:00 UTC): visibility 5 miles, light rain, a broken layer at 3,000 feet
- From Mon 12:00 pm MDT (18:00 UTC): wind from the west at 10 knots, visibility more than 6 miles, scattered clouds at 5,000 feet, a broken layer at 15,000 feet
The forecast for COS, the departure
- From Sun 6:00 pm MDT (00:00 UTC): wind from the south-southwest at 20 knots, gusting to 32, visibility more than 6 miles, a few clouds at 10,000 feet, scattered clouds at 20,000 feet
- From Sun 9:00 pm MDT (03:00 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
Temporary flight restrictions on the line or within 25 nm of it
- 6/8770 COLORADO SPRINGS, CO, Saturday, October 10, 2026 through Monday, October 12, 2026 UTC 8 nm from the route, at the departure end · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 12 October · ZDV
Daylight
Sunset at COS 6:25 pm MDT (00:25 UTC), at CPR 6:28 pm MDT (00:28 UTC) (civil twilight ends 6:56 pm MDT (00:56 UTC)). At 120 knots the arrival at CPR is after sunset there (6:30 pm MDT (00:30 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: City Of Colorado Springs Municipal, Casper/Natrona County International.