Gunnison-Crested Butte Regional to City Of Colorado Springs Municipal GUC → COS
106 nautical miles (122 statute miles) east on a straight line, true course 080°, about 068° magnetic at the departure end (variation 12E). At 120 knots that is 31 min at the quickest height in today's winds (30,000 ft, a 82-knot tailwind), arriving about 5:21 am MDT (11:21 UTC), after sunset at the destination. Right now GUC is VFR, wind from the west-southwest (250°) at 6 knots; COS is VFR, wind from the southeast (140°) at 3 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 SIERRA 2E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the first 19 nm of the route.
- AIRMET ZULU 1C: moderate icing up to 21,000 ft. Over the first 10 nm of the route.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 24,000 ft to 36,000 ft. Near the route, at the departure end.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the whole route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 48 nm of the route.
Turbulence AIRMET in force: moderate turbulence from 24,000 ft to 36,000 ft, near the route, at the departure end; AIRMET in force: moderate turbulence (due to mountain wave) up to 22,000 ft, over the whole route. 1 pilot report of turbulence near the line in the last three hours: light turbulence, at 23,000 ft, 46 nm west, 2:15 am MDT (08:15 UTC). The government's turbulence forecast map ↗
Icing AIRMET in force: moderate icing up to 21,000 ft, over the first 10 nm of the route. 1 pilot report of icing near the line in the last three hours: light rime icing, at 23,000 ft, 46 nm west, 2:15 am MDT (08:15 UTC). The freezing level is about 13,500 ft (from the winds-aloft temperatures), so icing is possible in cloud above that. The government's icing forecast map ↗
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 GUC.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- E55P at 23,000 ft, 46 nm west, 2:15 am MDT (08:15 UTC): light turbulence, light rime icing, -24 °C, remarks: during the climb departure KGJT zdvwc. At the departure end, 46 nm west of the line.
as filed, and in English
MTJ UA /OV MTJ350010/TM 0815/FL230/TP E55P/TA M24/TB LGT/IC LGT RIME/RM DURC DEP KGJT. ZDVWC
- Report
- a routine report filed through MTJ
- Where
- 10 nm north (350°) of MTJ
- Time
- 08:15 UTC
- Height
- at 23,000 ft
- Aircraft
- E55P
- Temperature
- −24 °C
- Turbulence
- light
- Icing
- light rime
- Remarks
- during the climb departure KGJT zdvwc
- B763 at 23,000 ft, 34 nm north, 4:27 am MDT (10:27 UTC): no turbulence, remarks: zdvwc. 48 nm along the route, 34 nm north of the line.
as filed, and in English
DEN UA /OV DEN232069/TM 1027/FL230/TP B763/TB NEG/RM ZDVWC
- Report
- a routine report filed through DEN
- Where
- 69 nm southwest (232°) of DEN
- Time
- 10:27 UTC
- Height
- at 23,000 ft
- Aircraft
- B763
- Turbulence
- none
- 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 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 (ALS, 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 | 250° at 32 kt | −31 kt | 10 °C | 151 kt | 42 min | 5:32 am MDT (11:32 UTC) |
| 9,500 ft | 250° at 30 kt | −28 kt | 9 °C | 148 kt | 43 min | 5:33 am MDT (11:33 UTC) |
| 11,500 ft | 230° at 30 kt | −24 kt | 4 °C | 144 kt | 44 min | 5:34 am MDT (11:34 UTC) |
| 13,500 ft | 220° at 38 kt | −30 kt | 0 °C | 150 kt | 42 min | 5:32 am MDT (11:32 UTC) |
| 15,500 ft | 220° at 49 kt | −39 kt | -5 °C | 159 kt | 40 min | 5:30 am MDT (11:30 UTC) |
| 17,500 ft | 220° at 60 kt | −49 kt | -9 °C | 169 kt | 38 min | 5:28 am MDT (11:28 UTC) |
| 18,000 ft FL180 | 220° at 63 kt | −51 kt | -10 °C | 171 kt | 37 min | 5:27 am MDT (11:27 UTC) |
| 24,000 ft FL240 | 230° at 87 kt | −74 kt | -21 °C | 194 kt | 33 min | 5:23 am MDT (11:23 UTC) |
| 30,000 ft FL300 | 220° at 108 kt | −82 kt | -29 °C | 202 kt | 31 min | 5:21 am MDT (11:21 UTC) |
| 34,000 ft FL340 | 220° at 107 kt | −81 kt | -37 °C | 201 kt | 32 min | 5:22 am MDT (11:22 UTC) |
| 39,000 ft FL390 | 220° at 105 kt | −79 kt | -49 °C | 199 kt | 32 min | 5:22 am MDT (11:22 UTC) |
Based on data from the 13th at 06:00 UTC; valid on the 13th 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| ALS | used from 0 nm out; 75 nm from the line | 230/39 2° | 230/68 -11° | 230/90 -20° | 220/109 -28° | 220/108 -37° | 220/104 -48° | |||
| PUB | used from 48 nm out; 50 nm from the line | 250/32 10° | 210/22 5° | 220/59 -10° | 230/84 -21° | 220/107 -29° | 220/106 -37° | 220/105 -49° |
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 |
|---|---|---|---|---|---|---|---|
| GUC Gunnison, CO | departure | VFR Sky: a few clouds at 6,000 feet, scattered clouds at 9,500 feet | from the west-southwest (250°) at 6 knots | 10+ mi | none | 7,679 ft | 3:56 am MDT (09:56 UTC) |
| ANK Salida, CO | 38 nm out, 7 nm southeast of the line | VFR | variable at 3 knots | 10+ mi | none | 7,523 ft | 10:35 UTC |
| COS Colorado Springs, CO | destination | VFR Sky: scattered clouds at 11,000 feet | from the southeast (140°) at 3 knots | 10+ mi | none | 6,187 ft | 3:54 am MDT (09:54 UTC) |
The highest airport on this list sits at 7,679 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
The codes as issued, and in English, for every airport in the table
GUC Gunnison, CO
the observation and the forecast as issued, and in English
METAR KGUC 130956Z AUTO 25006KT 10SM FEW060 SCT095 07/04 A3000 RMK AO2 SLP089 T00670039 $
- METAR
- a routine hourly observation
- KGUC
- the station, KGUC
- 130956Z
- observed 3:56 am MDT (09:56 UTC)
- AUTO
- fully automated report, nobody checked it
- 25006KT
- wind from the west-southwest at 6 knots
- 10SM
- visibility 10 miles
- FEW060
- a few clouds at 6,000 feet
- SCT095
- scattered clouds at 9,500 feet
- 07/04
- temperature 7 °C (45 °F), dew point 4 °C (39 °F)
- A3000
- altimeter setting 30.00 inches of mercury
- RMK
- remarks follow
- AO2
- automated station with a precipitation sensor
- SLP089
- sea-level pressure 1008.9 hPa
- T00670039
- temperature 6.7 °C (44 °F), dew point 3.9 °C (39 °F)
- $
- the station needs maintenance
TAF KGUC 130534Z 1306/1406 15005KT P6SM VCSH SCT040 BKN070 PROB30 1309/1315 6SM -SHRA BKN040 FM131900 23005KT P6SM VCSH SCT060 BKN080 PROB30 1319/1324 -SHRA BKN070 FM140500 11007KT P6SM FEW025 BKN045
- TAF
- a terminal aerodrome forecast: the weather expected at the airport, usually for the next 24 or 30 hours
- KGUC
- the station, KGUC
- 130534Z
- issued 11:34 pm MDT (05:34 UTC)
- 1306/1406 15005KT P6SM VCSH SCT040 BKN070
- valid from Tue 12:00 am MDT (06:00 UTC) to Wed 12:00 am MDT (06:00 UTC): wind from the south-southeast at 5 knots, visibility more than 6 miles, vcsh, scattered clouds at 4,000 feet, a broken layer at 7,000 feet
- PROB30 1309/1315 6SM -SHRA BKN040
- a 30% chance from Tue 3:00 am MDT (09:00 UTC) to Tue 9:00 am MDT (15:00 UTC): visibility 6 miles, light rain showers, a broken layer at 4,000 feet
- FM131900 23005KT P6SM VCSH SCT060 BKN080
- from Tue 1:00 pm MDT (19:00 UTC): wind from the southwest at 5 knots, visibility more than 6 miles, vcsh, scattered clouds at 6,000 feet, a broken layer at 8,000 feet
- PROB30 1319/1324 -SHRA BKN070
- a 30% chance from Tue 1:00 pm MDT (19:00 UTC) to Tue 6:00 pm MDT (00:00 UTC): light rain showers, a broken layer at 7,000 feet
- FM140500 11007KT P6SM FEW025 BKN045
- from Tue 11:00 pm MDT (05:00 UTC): wind from the east-southeast at 7 knots, visibility more than 6 miles, a few clouds at 2,500 feet, a broken layer at 4,500 feet
ANK Salida, CO
the observation as issued, and in English
METAR KANK 131035Z AUTO VRB03KT 10SM CLR 11/03 A2997 RMK AO2 T01070029 $
- METAR
- a routine hourly observation
- KANK
- the station, KANK
- 131035Z
- observed 10:35 UTC on the 13th
- AUTO
- fully automated report, nobody checked it
- VRB03KT
- wind light and variable
- 10SM
- visibility 10 miles
- CLR
- clear skies
- 11/03
- temperature 11 °C (52 °F), dew point 3 °C (37 °F)
- A2997
- altimeter setting 29.97 inches of mercury
- RMK
- remarks follow
- AO2
- automated station with a precipitation sensor
- T01070029
- temperature 10.7 °C (51 °F), dew point 2.9 °C (37 °F)
- $
- the station needs maintenance
COS Colorado Springs, CO
the observation and the forecast as issued, and in English
METAR KCOS 130954Z 14003KT 10SM SCT110 14/03 A2994 RMK AO2 SLP056 T01440033 $
- METAR
- a routine hourly observation
- KCOS
- the station, KCOS
- 130954Z
- observed 3:54 am MDT (09:54 UTC)
- 14003KT
- wind from the southeast at 3 knots
- 10SM
- visibility 10 miles
- SCT110
- scattered clouds at 11,000 feet
- 14/03
- temperature 14 °C (57 °F), dew point 3 °C (37 °F)
- A2994
- altimeter setting 29.94 inches of mercury
- RMK
- remarks follow
- AO2
- automated station with a precipitation sensor
- SLP056
- sea-level pressure 1005.6 hPa
- T01440033
- temperature 14.4 °C (58 °F), dew point 3.3 °C (38 °F)
- $
- the station needs maintenance
TAF KCOS 130520Z 1306/1406 15010KT P6SM FEW100 WS020/25025KT FM131400 27010KT P6SM FEW100 FM131800 17015G28KT P6SM SCT090 FM140200 01008KT P6SM BKN050
- TAF
- a terminal aerodrome forecast: the weather expected at the airport, usually for the next 24 or 30 hours
- KCOS
- the station, KCOS
- 130520Z
- issued 11:20 pm MDT (05:20 UTC)
- 1306/1406 15010KT P6SM FEW100 WS020/25025KT
- valid from Tue 12:00 am MDT (06:00 UTC) to Wed 12:00 am MDT (06:00 UTC): wind from the south-southeast at 10 knots, visibility more than 6 miles, a few clouds at 10,000 feet, wind shear below 2,000 feet: wind from 250° at 25 knots above it
- FM131400 27010KT P6SM FEW100
- from Tue 8:00 am MDT (14:00 UTC): wind from the west at 10 knots, visibility more than 6 miles, a few clouds at 10,000 feet
- FM131800 17015G28KT P6SM SCT090
- from Tue 12:00 pm MDT (18:00 UTC): wind from the south at 15 knots, gusting to 28, visibility more than 6 miles, scattered clouds at 9,000 feet
- FM140200 01008KT P6SM BKN050
- from Tue 8:00 pm MDT (02:00 UTC): wind from the north at 8 knots, visibility more than 6 miles, a broken layer at 5,000 feet
At COS when you get there the forecast at the estimated arrival, 5:21 am MDT (11:21 UTC)
Wind from the south-southeast at 10 knots, visibility more than 6 miles, low-level wind shear, a few clouds at 10,000 feet VFR
The whole forecast for COS
- From Tue 12:00 am MDT (06:00 UTC): wind from the south-southeast at 10 knots, visibility more than 6 miles, low-level wind shear, a few clouds at 10,000 feet
- From Tue 8:00 am MDT (14:00 UTC): wind from the west at 10 knots, visibility more than 6 miles, a few clouds at 10,000 feet
- From Tue 12:00 pm MDT (18:00 UTC): wind from the south at 15 knots, gusting to 28, visibility more than 6 miles, scattered clouds at 9,000 feet
- From Tue 8:00 pm MDT (02:00 UTC): wind from the north at 8 knots, visibility more than 6 miles, a broken layer at 5,000 feet
The forecast for GUC, the departure
- From Tue 12:00 am MDT (06:00 UTC): wind from the south-southeast at 5 knots, visibility more than 6 miles, showers nearby, scattered clouds at 4,000 feet, a broken layer at 7,000 feet
- 30% chance between Tue 3:00 am MDT (09:00 UTC) and 9:00 am MDT (15:00 UTC): visibility 6 miles, light rain showers, a broken layer at 4,000 feet
- From Tue 1:00 pm MDT (19:00 UTC): wind from the southwest at 5 knots, visibility more than 6 miles, showers nearby, scattered clouds at 6,000 feet, a broken layer at 8,000 feet
- 30% chance between Tue 1:00 pm MDT (19:00 UTC) and 6:00 pm MDT (00:00 UTC): light rain showers, a broken layer at 7,000 feet
- From Tue 11:00 pm MDT (05:00 UTC): wind from the east-southeast at 7 knots, visibility more than 6 miles, a few clouds at 2,500 feet, a broken layer at 4,500 feet
COS: the forecast as issued, and in English
TAF KCOS 130520Z 1306/1406 15010KT P6SM FEW100 WS020/25025KT FM131400 27010KT P6SM FEW100 FM131800 17015G28KT P6SM SCT090 FM140200 01008KT P6SM BKN050
GUC: the forecast as issued, and in English
TAF KGUC 130534Z 1306/1406 15005KT P6SM VCSH SCT040 BKN070 PROB30 1309/1315 6SM -SHRA BKN040 FM131900 23005KT P6SM VCSH SCT060 BKN080 PROB30 1319/1324 -SHRA BKN070 FM140500 11007KT P6SM FEW025 BKN045
Temporary flight restrictions on the line or within 25 nm of it
No temporary flight restriction on or near this route right now.
Notices to air missions closures and things out of service at both ends; airspace, navigation aids and obstructions near the line
GUC: 9 notices in force, 1 starting within a week. all of them, grouped →
COS: 24 notices in force. all of them, grouped →
- closed Apron east Terminal APN northeast 100 ft closed until Fri 23 Oct, 3:00 pm MDT (21:00 UTC) · COS 10/015
as issued
!COS 10/015 COS APRON EAST TERMINAL APN NE 100FT CLSD 2610051412-2610232100
2 notices near the line (airspace and special activity within 25 nm, navigation aids within 25 nm, obstructions within 5 nm):
- Airspace SEE BRK 04/434 aerobatic aircraft daily SR-SS until Tue 31 Aug 2027, 7:30 pm MDT (01:30 UTC) · Daily:SR-SS~DLY SR-SS · 106 nm along the route, 14 nm off the line · CO4 04/075
as issued
!COS 04/075 CO4 AIRSPACE SEE BRK 04/434 AEROBATIC ACFT DLY SR-SS 2504151222-2709010130
- Airspace aerobatic aircraft within an area defined as 1 nautical miles radius of 39°13′N 104°35′W (16.4 nautical miles north FLY) 600 ft-4,000 ft above ground level daily SR-SS until Tue 31 Aug 2027, 7:30 pm MDT (01:30 UTC) · Daily:SR-SS~DLY SR-SS · 106 nm along the route, 9 nm off the line · BRK 04/434
as issued
!DEN 04/434 BRK AIRSPACE AEROBATIC ACFT WI AN AREA DEFINED AS 1NM RADIUS OF 391338N1043505W (16.4NM N FLY) 600FT-4000FT AGL DLY SR-SS 2504151222-2709010130
From the FAA's notice service (NOTAMs), the site's copy refreshed every few minutes; last checked a minute ago. The FAA has so far issued eFlight its test feed, which misses some notices (checked against the FAA's own search on 12 October: about a third missing at Santa Barbara and Burbank, none at Atlanta or Las Vegas); the request for the full feed is with the FAA. Times are local to the field. This is for planning; the legal briefing comes from Flight Service or the FAA's own tools.
Daylight
Sunset at GUC 6:31 pm MDT (00:31 UTC), at COS 6:22 pm MDT (00:22 UTC) (civil twilight ends 6:48 pm MDT (00:48 UTC)). At 120 knots the arrival at COS is before sunrise there (7:05 am MDT (13:05 UTC)).
Each restriction opens the FAA's own page with the exact area, heights and times.
The wind over the route live wind map, from Windy.com · drag the time bar for the coming hours; the level menu changes the height
Colours show wind speed, the moving lines its direction, at the surface unless you pick a height. Map and forecast by Windy.com; a second opinion beside the government's winds-aloft table above.
Radar and forecast charts for the regions crossed government pictures, the latest each time the page loads · the turbulence and icing forecasts: turbulence ↗ · icing ↗
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: Gunnison-Crested Butte Regional, City Of Colorado Springs Municipal.