Greenville Spartanburg International to City Of Colorado Springs Municipal GSP → COS
1,102 nautical miles (1,269 statute miles) west on a straight line, true course 289°, about 295° magnetic at the departure end (variation 6W). At 120 knots that is 10 h 42 min at the quickest height in today's winds (12,500 ft, a 17-knot headwind), arriving about 10:34 am MDT (16:34 UTC). Right now GSP is VFR, wind variable at 3 knots; COS is VFR, wind from the south (180°) at 11 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 7C: thunderstorms (a convective SIGMET) up to 34,000 ft, moving from the southwest at 40 knots, until 2:55 am EDT (06:55 UTC). Over the last 0 nm of the route.
as issued
WSUS32 KKCI 120455 MKCC WST 120455 CONVECTIVE SIGMET 7C VALID UNTIL 0655Z TX OK CO NM FROM 40NNW PUB-70WSW LBL-40NE CME-40ESE RSK-30ENE HBU-40NNW PUB AREA TS MOV FROM 22040KT. TOPS TO FL340.
- AIRMET TANGO 5W: moderate turbulence below 18,000 ft (due to mountain wave) up to 10,000 ft. Over the first 60 nm of the route.
- AIRMET TANGO 5W: moderate turbulence above 18,000 ft (due to mountain wave) from 29,000 ft to 40,000 ft. Over the route from 10 to 99 nm out.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 40 to 139 nm out.
- AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 50 to 258 nm out.
- 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 566 to 1023 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 89 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the last 70 nm of 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 0 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 GSP.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- B738 descending, 25 nm north, 11:15 pm EDT (03:15 UTC): remarks: multiple layers from from 5,200 ft to 4,700 ft overcast at at 2,300 ft. 99 nm along the route, 25 nm north of the line.
as filed, and in English
TYS UA /OV KTYS/TM 0315/FLDURD/TP B738/RM MULTIPLE LAYERS FROM 052-047 OVC AT 023
- Report
- a routine report filed through TYS
- Where
- over KTYS
- Time
- 03:15 UTC
- Height
- during the descent
- Aircraft
- B738
- Remarks
- multiple layers from from 5,200 ft to 4,700 ft overcast at at 2,300 ft
- E170 at 22,500 ft, 42 nm northwest, 1:06 am EDT (05:06 UTC): light to moderate turbulence up to 23,000 ft, remarks: during the descent tbarr star ZDVWC-13. At the destination end, 42 nm northwest of the line.
as filed, and in English
DEN UA /OV DEN216057/TM 0506/FL225/TP E170/TB CONS LGT OCNL MOD BLO 230/RM DURD TBARR STAR. ZDVWC-13
- Report
- a routine report filed through DEN
- Where
- 57 nm southwest (216°) of DEN
- Time
- 05:06 UTC
- Height
- at 22,500 ft
- Aircraft
- E170
- Turbulence
- continuous light occasional moderate below 23,000 ft
- Remarks
- during the descent tbarr star ZDVWC-13
Winds aloft along the route, and the time en route the forecast for use 02:00–09:00 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 10 forecast points nearest it (GSP, TYS, BNA, CGI, SGF, ICT, SLN, GCK, GLD, 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 |
|---|---|---|---|---|---|---|
| 4,500 ft | 240° at 25 kt | +19 kt | 21 °C | 101 kt | 10 h 55 min | 10:47 am MDT (16:47 UTC) |
| 6,500 ft | 250° at 22 kt | +19 kt | 16 °C | 101 kt | 10 h 55 min | 10:47 am MDT (16:47 UTC) |
| 8,500 ft | 260° at 19 kt | +19 kt | 13 °C | 101 kt | 10 h 55 min | 10:47 am MDT (16:47 UTC) |
| 10,500 ft | 270° at 17 kt | +18 kt | 9 °C | 102 kt | 10 h 48 min | 10:40 am MDT (16:40 UTC) |
| 12,500 ft | 270° at 16 kt | +17 kt | 6 °C | 103 kt | 10 h 42 min | 10:34 am MDT (16:34 UTC) |
| 14,500 ft | 270° at 17 kt | +18 kt | 1 °C | 102 kt | 10 h 48 min | 10:40 am MDT (16:40 UTC) |
| 16,500 ft | 270° at 19 kt | +19 kt | -3 °C | 101 kt | 10 h 55 min | 10:47 am MDT (16:47 UTC) |
| 18,000 ft FL180 | 270° at 20 kt | +20 kt | -6 °C | 100 kt | 11 h 01 min | 10:53 am MDT (16:53 UTC) |
| 24,000 ft FL240 | 270° at 24 kt | +24 kt | -19 °C | 96 kt | 11 h 29 min | 11:21 am MDT (17:21 UTC) |
| 30,000 ft FL300 | 270° at 42 kt | +44 kt | -31 °C | 76 kt | 14 h 30 min | 2:22 pm MDT (20:22 UTC) |
| 34,000 ft FL340 | 280° at 48 kt | +50 kt | -39 °C | 70 kt | 15 h 45 min | 3:37 pm MDT (21:37 UTC) |
| 39,000 ft FL390 | 290° at 43 kt | +44 kt | -49 °C | 76 kt | 14 h 30 min | 2:22 pm MDT (20:22 UTC) |
Based on data from the 12th at 00:00 UTC; valid on the 12th at 06:00 UTC for use 02:00 to 09:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| GSP | used from 0 nm out; 25 nm from the line | 320/22 | 340/19 13° | 320/18 8° | 310/24 5° | 300/34 -7° | 300/36 -18° | 290/30 -33° | 300/32 -39° | 320/42 -49° |
| TYS | used from 50 nm out; 35 nm from the line | 320/20 | 340/18 11° | 340/32 9° | 340/36 4° | 330/37 -7° | 330/38 -19° | 330/50 -34° | 330/53 -38° | 330/44 -48° |
| BNA | used from 149 nm out; 56 nm from the line | 310/20 | 340/20 17° | 330/24 10° | 340/22 5° | 330/26 -6° | 340/29 -18° | 330/52 -33° | 320/62 -41° | 340/45 -50° |
| CGI | used from 298 nm out; 67 nm from the line | 240/20 | 270/15 15° | 280/15 11° | 300/13 6° | 290/20 -6° | 280/24 -18° | 300/34 -32° | 300/47 -41° | 310/49 -51° |
| SGF | used from 447 nm out; 89 nm from the line | 230/33 | 230/28 15° | 250/20 13° | 240/18 7° | 250/20 -6° | 250/24 -17° | 280/42 -31° | 280/49 -40° | 290/46 -51° |
| ICT | used from 646 nm out; 86 nm from the line | 200/48 | 230/39 19° | 240/24 14° | 240/20 8° | 240/22 -6° | 250/31 -18° | 250/61 -29° | 260/58 -38° | 270/54 -49° |
| SLN | used from 794 nm out; 61 nm from the line | 210/53 | 230/41 20° | 240/26 14° | 230/16 8° | 240/25 -7° | 240/35 -19° | 250/61 -30° | 260/65 -38° | 260/56 -49° |
| GCK | used from 844 nm out; 52 nm from the line | 220/48 21° | 230/37 14° | 250/30 8° | 230/37 -6° | 240/37 -20° | 240/69 -28° | 250/67 -37° | 260/58 -48° | |
| GLD | used from 943 nm out; 49 nm from the line | 230/49 | 230/42 15° | 220/26 8° | 240/18 -7° | 230/27 -21° | 240/62 -30° | 240/61 -35° | 250/57 -47° | |
| PUB | used from 1043 nm out; 37 nm from the line | 230/25 13° | 230/32 6° | 220/44 -8° | 230/49 -21° | 240/70 -28° | 240/67 -34° | 240/58 -46° |
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 |
|---|---|---|---|---|---|---|---|
| GSP Greer, SC | departure | VFR | variable at 3 knots | 10+ mi | none | 963 ft | 12:53 am EDT (04:53 UTC) |
| TYS Knoxville, TN | 99 nm out, 25 nm north of the line, tower | marginal VFR Sky: overcast at 3,000 feet | from the south (190°) at 7 knots | 10+ mi | 3,000 ft | 986 ft | 05:34 UTC |
| MQY Smyrna, TN | 218 nm out, 2 nm west of the line, tower | reported, no category | calm | none | 543 ft | 05:16 UTC | |
| BNA Nashville, TN | 228 nm out, 5 nm north of the line, tower | VFR | from the south (180°) at 4 knots | 7 mi | none | 599 ft | 04:53 UTC |
| POF Poplar Bluff, MO | 407 nm out, 5 nm southwest of the line | VFR | calm | 9 mi | none | 330 ft | 04:53 UTC |
| TVB Cabool, MO | 497 nm out, 3 nm southwest of the line | no report just now | 1,220 ft | ||||
| SGF Springfield, MO | 556 nm out, 11 nm southwest of the line, tower | VFR | from the south (180°) at 9 knots | 10+ mi | none | 1,268 ft | 04:52 UTC |
| BEC Wichita, KS | 745 nm out, 19 nm south of the line, tower | VFR | from the south (180°) at 15 knots, gusting to 20 | 10+ mi | none | 1,408 ft | 05:35 UTC |
| HUT Hutchinson, KS | 775 nm out, 4 nm southwest of the line, tower | VFR | from the south (170°) at 14 knots, gusting to 25 | 10+ mi | none | 1,542 ft | 04:52 UTC |
| TQK Scott City, KS | 924 nm out, 1 nm east of the line | VFR | from the south-southwest (200°) at 22 knots, gusting to 27 | 10+ mi | none | 2,968 ft | 05:35 UTC |
| COS Colorado Springs, CO | destination | VFR Sky: a broken layer at 18,000 feet | from the south (180°) at 11 knots | 10+ mi | 18,000 ft | 6,187 ft | 10:54 pm MDT (04:54 UTC) |
The highest airport on this list sits at 6,187 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At COS when you get there the forecast at the estimated arrival, 10:34 am MDT (16:34 UTC)
Wind from the north-northeast at 8 knots, visibility more than 6 miles, clear skies VFR
The whole forecast for COS
- From Mon 12:00 am MDT (06:00 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
- 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
The forecast for GSP, the departure
- From Mon 2:00 am EDT (06:00 UTC): wind from the west at 6 knots, visibility more than 6 miles, a few clouds at 5,000 feet
- From Mon 8:00 am EDT (12:00 UTC): wind from the northwest at 6 knots, visibility more than 6 miles, clear skies
- From Mon 10:00 am EDT (14:00 UTC): wind from the north-northwest at 10 knots, gusting to 18, visibility more than 6 miles, clear skies
- From Mon 5:00 pm EDT (21:00 UTC): wind from the north-northwest at 5 knots, visibility more than 6 miles, a few clouds at 25,000 feet
- From Mon 9:00 pm EDT (01:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 25,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/0708 Goodlettsville, TN, Saturday, August 1, 2026 through Sunday, August 1, 2027 UTC 17 nm from the route, 238 nm along the route · security · until 1 August · ZME
Daylight
Sunset at GSP 6:58 pm EDT (22:58 UTC), at COS 6:25 pm MDT (00:25 UTC) (civil twilight ends 6:51 pm MDT (00:51 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: Greenville Spartanburg International, City Of Colorado Springs Municipal.
