City Of Colorado Springs Municipal to Yellowstone Regional COS → COD
394 nautical miles (453 statute miles) northwest on a straight line, true course 332°, about 324° magnetic at the departure end (variation 8E). At 120 knots that is 2 h 54 min at the quickest height in today's winds (30,000 ft, a 16-knot tailwind), arriving about 8:19 am MDT (14:19 UTC). Right now COS is VFR, wind from the southwest (230°) at 11 knots, gusting to 22; COD is marginal VFR, wind from the north (010°) 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: 5 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 20 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the first 256 nm of the route.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the first 227 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 118 to 374 nm out.
- 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 route from 128 to 236 nm out.
- AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 187 to 246 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the last 138 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 59 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
- B763 at 23,000 ft, 4 nm east, 4:26 am MDT (10:26 UTC): light chop turbulence, remarks: zdvwc. 79 nm along the route, 4 nm east of the line.
as filed, and in English
DEN UA /OV DEN278037/TM 1026/FL230/TP B763/TB OCNL LGT CHOP/RM ZDVWC
- Report
- a routine report filed through DEN
- Where
- 37 nm west (278°) of DEN
- Time
- 10:26 UTC
- Height
- at 23,000 ft
- Aircraft
- B763
- Turbulence
- occasional light chop
- Remarks
- zdvwc
- BE9L at 17,000 ft, 37 nm northeast, 3:42 am MDT (09:42 UTC): light rime icing from 15,000 ft to 17,000 ft, 0 °C, remarks: zdvwc. 266 nm along the route, 37 nm northeast of the line.
as filed, and in English
CPR UA /OV DDY250025/TM 0942/FL170/TP BE9L/TA 00/IC LGT RIME 150-170/RM ZDVWC
- Report
- a routine report filed through CPR
- Where
- 25 nm west (250°) of DDY
- Time
- 09:42 UTC
- Height
- at 17,000 ft
- Aircraft
- BE9L
- Temperature
- 0 °C
- Icing
- light rime from 15,000 ft to 17,000 ft
- Remarks
- zdvwc
Winds aloft along the route, and the time en route the forecast for use 08:00–15:00 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, 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 | 260° at 15 kt | +4 kt | 6 °C | 116 kt | 3 h 24 min | 8:49 am MDT (14:49 UTC) |
| 10,500 ft | 250° at 18 kt | +1 kt | 5 °C | 119 kt | 3 h 19 min | 8:44 am MDT (14:44 UTC) |
| 12,500 ft | 230° at 24 kt | −3 kt | 1 °C | 123 kt | 3 h 12 min | 8:37 am MDT (14:37 UTC) |
| 14,500 ft | 230° at 31 kt | −7 kt | -3 °C | 127 kt | 3 h 06 min | 8:31 am MDT (14:31 UTC) |
| 16,500 ft | 220° at 39 kt | −11 kt | -8 °C | 131 kt | 3 h | 8:25 am MDT (14:25 UTC) |
| 18,000 ft FL180 | 220° at 44 kt | −14 kt | -11 °C | 134 kt | 2 h 56 min | 8:21 am MDT (14:21 UTC) |
| 24,000 ft FL240 | 230° at 51 kt | −11 kt | -22 °C | 131 kt | 3 h | 8:25 am MDT (14:25 UTC) |
| 30,000 ft FL300 | 220° at 57 kt | −16 kt | -32 °C | 136 kt | 2 h 54 min | 8:19 am MDT (14:19 UTC) |
| 34,000 ft FL340 | 230° at 61 kt | −12 kt | -36 °C | 132 kt | 2 h 59 min | 8:24 am MDT (14:24 UTC) |
| 39,000 ft FL390 | 230° at 61 kt | −12 kt | -46 °C | 132 kt | 2 h 59 min | 8:24 am MDT (14:24 UTC) |
Based on data from the 12th at 06:00 UTC; valid on the 12th at 12:00 UTC for use 08:00 to 15:00 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; 44 nm from the line | 270/24 11° | 230/13 5° | 230/48 -8° | 230/46 -20° | 230/63 -30° | 240/78 -36° | 240/78 -48° | ||
| RKS | used from 148 nm out; 117 nm from the line | 250/9 | 230/21 -1° | 210/43 -14° | 220/59 -23° | 220/55 -32° | 220/53 -35° | 220/48 -44° | ||
| LND | used from 197 nm out; 88 nm from the line | 240/10 3° | 240/30 0° | 220/42 -13° | 230/52 -23° | 220/54 -33° | 220/52 -36° | 220/53 -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 |
|---|---|---|---|---|---|---|---|
| COS Colorado Springs, CO | departure | VFR Sky: a few clouds at 20,000 feet | from the southwest (230°) at 11 knots, gusting to 22 | 10+ mi | none | 6,187 ft | 4:54 am MDT (10:54 UTC) |
| APA Denver, CO | 39 nm out, 16 nm northeast of the line, tower | VFR | from the south (170°) at 11 knots | 10+ mi | none | 5,884 ft | 10:53 UTC |
| BJC Denver, CO | 69 nm out, 14 nm northeast of the line, tower | VFR | from the west-northwest (300°) at 3 knots | 10+ mi | none | 5,673 ft | 11:15 UTC |
| GNB Granby, CO | 98 nm out, 13 nm southwest of the line | VFR | from the northeast (040°) at 3 knots | 10+ mi | none | 8,207 ft | 11:15 UTC |
| SAA Saratoga, WY | 187 nm out, 10 nm southwest of the line | reported, no category | from the south (190°) at 9 knots, gusting to 16 | 10+ mi | none | 7,014 ft | 11:10 UTC |
| RIW Riverton, WY | 305 nm out, 24 nm southwest of the line | marginal VFR Sky: overcast at 2,000 feet | from the north (010°) at 11 knots | 10+ mi | 2,000 ft | 5,516 ft | 10:53 UTC |
| HSG Thermopolis, WY | 335 nm out, 4 nm northwest of the line | marginal VFR Sky: overcast at 2,500 feet | from the north-northeast (020°) at 8 knots | 10+ mi | 2,500 ft | 4,891 ft | 11:15 UTC |
| COD Cody, WY | destination | marginal VFR Sky: overcast at 1,600 feet | from the north (010°) at 9 knots | 10+ mi | 1,600 ft | 5,102 ft | 4:56 am MDT (10:56 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 COD when you get there the forecast at the estimated arrival, 8:19 am MDT (14:19 UTC)
Wind from the north-northeast at 10 knots, visibility more than 6 miles, a broken layer at 1,000 feet, overcast at 1,800 feet marginal VFR
The whole forecast for COD
- From Mon 6:00 am MDT (12:00 UTC): wind from the north-northeast at 10 knots, visibility more than 6 miles, a broken layer at 1,000 feet, overcast at 1,800 feet
- From Mon 12:00 pm MDT (18:00 UTC): wind from the northeast at 4 knots, visibility more than 6 miles, scattered clouds at 1,500 feet, overcast at 3,000 feet
- 30% chance between Mon 4:00 pm MDT (22:00 UTC) and 8:00 pm MDT (02:00 UTC): visibility 6 miles, light showers rain snow
- From Mon 8:00 pm MDT (02:00 UTC): wind from the east-northeast at 5 knots, visibility more than 6 miles, showers nearby, scattered clouds at 500 feet, a broken layer at 1,000 feet and more above
The forecast for COS, the departure
- From Mon 6:00 am MDT (12:00 UTC): wind from the southwest at 11 knots, gusting to 22, visibility more than 6 miles, a few clouds at 20,000 feet
- 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
- From Mon 1:00 pm MDT (19:00 UTC): wind from the south-southwest at 20 knots, gusting to 30, visibility more than 6 miles, scattered clouds at 12,000 feet
- From Mon 7:00 pm MDT (01:00 UTC): wind from the south-southwest at 12 knots, visibility more than 6 miles, clear skies
- From Mon 10:00 pm MDT (04:00 UTC): wind from the south-southeast at 6 knots, visibility more than 6 miles, scattered clouds at 25,000 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 22 nm from the route, 20 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 13 October · ZDV
Daylight
Sunset at COS 6:23 pm MDT (00:23 UTC), at COD 6:35 pm MDT (00:35 UTC) (civil twilight ends 7:04 pm MDT (01:04 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, Yellowstone Regional.