Yellowstone Regional to Laramie Regional COD → LAR
242 nautical miles (279 statute miles) southeast on a straight line, true course 141°, about 130° magnetic at the departure end (variation 11E). At 120 knots that is 2 h at the quickest height in today's winds (7,500 ft, a 1-knot tailwind), arriving about 11:03 am MDT (17:03 UTC). Right now COD is IFR, wind from the northeast (050°) at 7 knots; LAR is VFR, wind from the south (190°) at 14 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 145 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the first 87 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 165 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 97 nm of the route.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the last 68 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 COD.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- E75L at 30,000 ft, 10 nm southwest, 8:34 am MDT (14:34 UTC): moderate chop turbulence, remarks: ZDVWC-34. At the destination end, 10 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, 41 nm east, 8:28 am MDT (14:28 UTC): moderate turbulence from 9,000 ft to 12,000 ft, remarks: during the climb zdvwc. At the destination end, 41 nm east 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
- E175L at 10,000 ft, 32 nm northeast, 8:05 am MDT (14:05 UTC): overcast from 10,500 ft to 11,500 ft. 155 nm along the route, 32 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
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 2 forecast points nearest it (LND, BFF). 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 | 240° at 15 kt | −1 kt | 3 °C | 121 kt | 2 h | 11:03 am MDT (17:03 UTC) |
| 9,500 ft | 240° at 18 kt | −1 kt | 3 °C | 121 kt | 2 h | 11:03 am MDT (17:03 UTC) |
| 11,500 ft | 230° at 24 kt | −1 kt | 1 °C | 121 kt | 2 h | 11:03 am MDT (17:03 UTC) |
| 13,500 ft | 230° at 27 kt | +2 kt | -4 °C | 118 kt | 2 h 03 min | 11:06 am MDT (17:06 UTC) |
| 15,500 ft | 220° at 28 kt | +5 kt | -8 °C | 115 kt | 2 h 06 min | 11:09 am MDT (17:09 UTC) |
| 17,500 ft | 220° at 29 kt | +9 kt | -13 °C | 111 kt | 2 h 11 min | 11:14 am MDT (17:14 UTC) |
| 18,000 ft FL180 | 210° at 30 kt | +9 kt | -14 °C | 111 kt | 2 h 11 min | 11:14 am MDT (17:14 UTC) |
| 24,000 ft FL240 | 220° at 55 kt | +8 kt | -25 °C | 112 kt | 2 h 10 min | 11:13 am MDT (17:13 UTC) |
| 30,000 ft FL300 | 230° at 60 kt | +6 kt | -31 °C | 114 kt | 2 h 07 min | 11:10 am MDT (17:10 UTC) |
| 34,000 ft FL340 | 220° at 64 kt | +9 kt | -38 °C | 111 kt | 2 h 11 min | 11:14 am MDT (17:14 UTC) |
| 39,000 ft FL390 | 230° at 56 kt | +7 kt | -44 °C | 113 kt | 2 h 08 min | 11:11 am MDT (17:11 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 194 nm out; 108 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° |
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, 9 nm west of the line | marginal VFR Sky: scattered clouds at 900 feet, overcast at 1,600 feet | from the north (010°) at 3 knots | 10+ mi | 1,600 ft | 4,891 ft | 14:55 UTC |
| LAR Laramie, WY | destination | VFR | from the south (190°) at 14 knots | 10+ mi | none | 7,283 ft | 8:53 am MDT (14:53 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 LAR when you get there the forecast at the estimated arrival, 11:03 am MDT (17:03 UTC)
Wind from the southwest at 23 knots, gusting to 32, visibility more than 6 miles, a few clouds at 25,000 feet VFR
The whole forecast for LAR
- From Mon 6:00 am MDT (12:00 UTC): wind from the southwest at 10 knots, visibility more than 6 miles, low-level wind shear, a few clouds at 25,000 feet
- From Mon 8:00 am MDT (14:00 UTC): wind from the southwest at 23 knots, gusting to 32, visibility more than 6 miles, a few clouds at 25,000 feet
- From Mon 2:00 pm MDT (20:00 UTC): wind from the southwest at 17 knots, gusting to 26, visibility more than 6 miles, showers nearby, scattered clouds at 8,000 feet, a broken layer at 25,000 feet
- From Mon 5:00 pm MDT (23:00 UTC): wind from the south-southwest at 12 knots, visibility more than 6 miles, scattered clouds at 6,000 feet, a broken layer at 20,000 feet
- From Mon 8:00 pm MDT (02:00 UTC): wind from the southeast at 9 knots, visibility more than 6 miles, a broken layer at 5,000 feet, overcast at 7,000 feet
- From Tue 1:00 am MDT (07:00 UTC): wind from the southeast at 10 knots, visibility more than 6 miles, a broken layer at 3,000 feet, overcast at 4,000 feet
- 30% chance between Tue 1:00 am MDT (07:00 UTC) and 6:00 am MDT (12:00 UTC): visibility 4 miles, rain showers, overcast at 1,000 feet
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 LAR 6:25 pm MDT (00:25 UTC) (civil twilight ends 6:52 pm MDT (00:52 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, Laramie Regional.