Yellowstone Regional to Northern Colorado Regional COD → FNL
302 nautical miles (347 statute miles) southeast on a straight line, true course 143°, about 132° magnetic at the departure end (variation 11E). At 120 knots that is 2 h 30 min at the quickest height in today's winds (9,500 ft, a 1-knot tailwind), arriving about 12:20 pm MDT (18:20 UTC). Right now COD is IFR, wind from the northeast (050°) at 7 knots; FNL is VFR, wind from the south-southeast (160°) at 7 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 SIERRA 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the first 136 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 166 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Near the route, 127 nm along the route.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the last 127 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 last 117 nm of the route.
- AIRMET TANGO 3W: 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 205 to 263 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 COD.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- BCS1 at 31,000 ft, 7 nm east, 9:26 am MDT (15:26 UTC): moderate turbulence, remarks: mountain wave +-15KTS-ZDVWC 34. 224 nm along the route, 7 nm east of the line.
as filed, and in English
LAR UA /OV LAR320014/TM 1526/FL310/TP BCS1/TB MOD/RM MTN WAVE +-15KTS-ZDVWC- 34
- Report
- a routine report filed through LAR
- Where
- 14 nm northwest (320°) of LAR
- Time
- 15:26 UTC
- Height
- at 31,000 ft
- Aircraft
- BCS1
- Turbulence
- moderate
- Remarks
- mountain wave +-15KTS-ZDVWC 34
- E75L at 30,000 ft, 5 nm southwest, 8:34 am MDT (14:34 UTC): moderate chop turbulence, remarks: ZDVWC-34. 244 nm along the route, 5 nm southwest of the line.
as filed, and in English
LAR UA /OV LAR200010/TM 1434/FL300/TP E75L/TB MOD CHOP/RM -ZDVWC-34
- Report
- a routine report filed through LAR
- Where
- 10 nm south (200°) of LAR
- Time
- 14:34 UTC
- Height
- at 30,000 ft
- Aircraft
- E75L
- Turbulence
- moderate chop
- Remarks
- ZDVWC-34
- BE20 at 12,500 ft, 35 nm northeast, 8:28 am MDT (14:28 UTC): moderate turbulence from 9,000 ft to 12,000 ft, remarks: during the climb zdvwc. 273 nm along the route, 35 nm northeast of the line.
as filed, and in English
CYS UA /OV CYS/TM 1428/FL125/TP BE20/TB MOD 090-120/RM DURC -ZDVWC
- Report
- a routine report filed through CYS
- Where
- over CYS
- Time
- 14:28 UTC
- Height
- at 12,500 ft
- Aircraft
- BE20
- Turbulence
- moderate from 9,000 ft to 12,000 ft
- Remarks
- during the climb zdvwc
- B738 descending, 45 nm southeast, 9:20 am MDT (15:20 UTC): moderate turbulence from 12,000 ft to 18,000 ft. At the destination end, 45 nm southeast of the line.
as filed, and in English
DEN UA /OV 30NE DEN/TM 1520/FLDURD/TP B738/TB MOD 180-120
- Report
- a routine report filed through DEN
- Where
- 30NE den
- Time
- 15:20 UTC
- Height
- during the descent
- Aircraft
- B738
- Turbulence
- moderate from 18,000 ft to 12,000 ft
- B737 at 21,000 ft, 20 nm south, 8:05 am MDT (14:05 UTC): moderate turbulence, remarks: mountain wave a 30-knot gain of airspeed from 25,000 ft to 15,000 ft during the descent. At the destination end, 20 nm south of the line.
as filed, and in English
DEN UA /OV DEN310025/TM 1405/FL210/TP B737/TB MOD TURB/RM MTN WAVE +30KTS 250-150 DURD
- Report
- a routine report filed through DEN
- Where
- 25 nm northwest (310°) of DEN
- Time
- 14:05 UTC
- Height
- at 21,000 ft
- Aircraft
- B737
- Turbulence
- moderate turbulence
- Remarks
- mountain wave a 30-knot gain of airspeed from 25,000 ft to 15,000 ft during the descent
- B738 descending, 10 nm southwest, 7:01 am MDT (13:01 UTC): moderate turbulence from 11,000 ft to 20,000 ft. At the destination end, 10 nm southwest of the line.
as filed, and in English
DEN UA /OV 40NW DEN/TM 1301/FLDURD/TP B738/TB MOD 200-110
- Report
- a routine report filed through DEN
- Where
- 40NW den
- Time
- 13:01 UTC
- Height
- during the descent
- Aircraft
- B738
- Turbulence
- moderate from 20,000 ft to 11,000 ft
- E175L at 10,000 ft, 36 nm northeast, 8:05 am MDT (14:05 UTC): overcast from 10,500 ft to 11,500 ft. 156 nm along the route, 36 nm northeast of the line.
as filed, and in English
CPR UA /OV CPR110010/TM 1405/FL100/TP E175L/SK OVC105-TOP115
- Report
- a routine report filed through CPR
- Where
- 10 nm east (110°) of CPR
- Time
- 14:05 UTC
- Height
- at 10,000 ft
- Aircraft
- E175L
- Sky
- overcast from 10,500 ft, tops 11,500 ft
- CRJ2 at 13,500 ft, 14 nm northeast, 9:27 am MDT (15:27 UTC): no turbulence, no icing, overcast above 10,500 ft, -9 °C, remarks: tops 13,500 ft. 166 nm along the route, 14 nm northeast of the line.
as filed, and in English
CPR UA /OV CPR180025/TM 1527/FL135/TP CRJ2/SK OVC105/TA M09/TB NEG/IC NEG/RM TOPS 135
- Report
- a routine report filed through CPR
- Where
- 25 nm south (180°) of CPR
- Time
- 15:27 UTC
- Height
- at 13,500 ft
- Aircraft
- CRJ2
- Sky
- overcast from 10,500 ft
- Temperature
- −9 °C
- Turbulence
- none
- Icing
- none
- Remarks
- tops 13,500 ft
- B737 at 6,500 ft, 42 nm southeast, 9:43 am MDT (15:43 UTC): no turbulence. At the destination end, 42 nm southeast of the line.
as filed, and in English
DEN UA /OV DEN/TM 1543/FL065/TP B737/TB NEG TB ON FINAL RWY16L
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 15:43 UTC
- Height
- at 6,500 ft
- Aircraft
- B737
- Turbulence
- no turbulence on final runway 16L
- E75L climbing, 42 nm southeast, 8:37 am MDT (14:37 UTC): light chop turbulence, remarks: zimmr sid. At the destination end, 42 nm southeast of the line.
as filed, and in English
DEN UA /OV W DEN/TM 1437/FLDURC/TP E75L/TB CONT LGT CHOP / MOD 120/RM ZIMMR SID
- Report
- a routine report filed through DEN
- Where
- west den
- Time
- 14:37 UTC
- Height
- during the climb
- Aircraft
- E75L
- Turbulence
- continuous light chop moderate at 12,000 ft
- Remarks
- zimmr sid
- B737 at 6,500 ft, 42 nm southeast, 8:32 am MDT (14:32 UTC): no turbulence. At the destination end, 42 nm southeast of the line.
as filed, and in English
DEN UA /OV DEN/TM 1432/FL065/TP B737/TB NEG TB ON FINAL RWY17R
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 14:32 UTC
- Height
- at 6,500 ft
- Aircraft
- B737
- Turbulence
- no turbulence on final runway 17R
- B737 at 18,000 ft, 24 nm southeast, 7:50 am MDT (13:50 UTC): light to moderate turbulence, remarks: from the surface to 18,000 ft. At the destination end, 24 nm southeast of the line.
as filed, and in English
DEN UA /OV DEN350020/TM 1350/FL180/TP B737/TB LGT-MOD/RM SFC-180
- Report
- a routine report filed through DEN
- Where
- 20 nm north (350°) of DEN
- Time
- 13:50 UTC
- Height
- at 18,000 ft
- Aircraft
- B737
- Turbulence
- light to moderate
- Remarks
- from the surface to 18,000 ft
- CRJ2 at 7,000 ft, 42 nm southeast, 7:30 am MDT (13:30 UTC): no turbulence. At the destination end, 42 nm southeast of the line.
as filed, and in English
DEN UA /OV 5N/TM 1330/FL070/TP CRJ2/TB NEG
- Report
- a routine report filed through DEN
- Where
- 5N
- Time
- 13:30 UTC
- Height
- at 7,000 ft
- Aircraft
- CRJ2
- Turbulence
- none
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 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 3 forecast points nearest it (LND, BFF, DEN). 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 | 230° at 13 kt | 0 | 5 °C | 120 kt | 2 h 31 min | 12:21 pm MDT (18:21 UTC) |
| 9,500 ft | 240° at 16 kt | −1 kt | 4 °C | 121 kt | 2 h 30 min | 12:20 pm MDT (18:20 UTC) |
| 11,500 ft | 230° at 22 kt | 0 | 1 °C | 120 kt | 2 h 31 min | 12:21 pm MDT (18:21 UTC) |
| 13,500 ft | 230° at 25 kt | +2 kt | -3 °C | 118 kt | 2 h 34 min | 12:24 pm MDT (18:24 UTC) |
| 15,500 ft | 220° at 28 kt | +5 kt | -8 °C | 115 kt | 2 h 38 min | 12:28 pm MDT (18:28 UTC) |
| 17,500 ft | 220° at 31 kt | +8 kt | -12 °C | 112 kt | 2 h 42 min | 12:32 pm MDT (18:32 UTC) |
| 18,000 ft FL180 | 220° at 31 kt | +9 kt | -13 °C | 111 kt | 2 h 43 min | 12:33 pm MDT (18:33 UTC) |
| 24,000 ft FL240 | 220° at 54 kt | +8 kt | -24 °C | 112 kt | 2 h 42 min | 12:32 pm MDT (18:32 UTC) |
| 30,000 ft FL300 | 230° at 61 kt | +5 kt | -31 °C | 115 kt | 2 h 38 min | 12:28 pm MDT (18:28 UTC) |
| 34,000 ft FL340 | 230° at 69 kt | +6 kt | -38 °C | 114 kt | 2 h 39 min | 12:29 pm MDT (18:29 UTC) |
| 39,000 ft FL390 | 230° at 65 kt | +8 kt | -44 °C | 112 kt | 2 h 42 min | 12:32 pm MDT (18:32 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| LND | used from 0 nm out; 83 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° | ||
| BFF | used from 195 nm out; 112 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° | |
| DEN | used from 244 nm out; 72 nm from the line | 230/7 11° | 230/13 4° | 230/40 -9° | 230/48 -20° | 240/66 -32° | 240/88 -38° | 230/100 -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 |
|---|---|---|---|---|---|---|---|
| COD Cody, WY | departure | IFR Sky: overcast at 500 feet | from the northeast (050°) at 7 knots | 10+ mi | 500 ft | 5,102 ft | 8:56 am MDT (14:56 UTC) |
| HSG Thermopolis, WY | 58 nm out, 8 nm west of the line | IFR Sky: overcast at 900 feet | from the north-northeast (020°) at 3 knots | 7 mi | 900 ft | 4,891 ft | 15:35 UTC |
| LAR Laramie, WY | 244 nm out, 5 nm northeast of the line | VFR | from the south (190°) at 14 knots | 10+ mi | none | 7,283 ft | 14:53 UTC |
| FNL Fort Collins/Loveland, CO | destination | VFR | from the south-southeast (160°) at 7 knots | 10+ mi | none | 5,020 ft | 8:56 am MDT (14:56 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 FNL when you get there the forecast at the estimated arrival, 12:20 pm MDT (18:20 UTC)
FNL has no terminal forecast; use the nearest airport that does.
The forecast for COD, the departure
- From Mon 8:00 am MDT (14:00 UTC): wind from the north-northeast at 8 knots, visibility more than 6 miles, a broken layer at 500 feet, overcast at 1,500 feet
- From Mon 12:00 pm MDT (18:00 UTC): wind from the northeast at 5 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
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 COD 6:35 pm MDT (00:35 UTC), at FNL 6:23 pm MDT (00:23 UTC) (civil twilight ends 6:50 pm MDT (00:50 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: Yellowstone Regional, Northern Colorado Regional.