Duluth International to Rifle Garfield County DLH → RIL
807 nautical miles (929 statute miles) southwest on a straight line, true course 243°, about 244° magnetic at the departure end (variation 1W). At 120 knots that is 7 h 08 min at the quickest height in today's winds (4,500 ft, a 7-knot headwind), arriving about 4:07 am MDT (10:07 UTC), after sunset at the destination. Right now DLH is VFR, wind from the north (360°) at 8 knots; RIL is VFR, wind from the northeast (050°) 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 route from 189 to 229 nm out.
- AIRMET SIERRA 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Near the route, 359 nm along the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the last 309 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 219 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 140 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 718 to 718 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 DLH.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- B738 at 23,000 ft, 48 nm southeast, 9:34 pm CDT (02:34 UTC): moderate turbulence, remarks: during the climb ZDVWC-05. 698 nm along the route, 48 nm southeast of the line.
as filed, and in English
DEN UA /OV DVV270030/TM 0234/FL230/TP B738/TB MOD /RM DURC ZDVWC-05
- Report
- a routine report filed through DEN
- Where
- 30 nm west (270°) of DVV
- Time
- 02:34 UTC
- Height
- at 23,000 ft
- Aircraft
- B738
- Turbulence
- moderate
- Remarks
- during the climb ZDVWC-05
- BCS1 at 24,000 ft, 48 nm southeast, 8:30 pm CDT (01:30 UTC): moderate turbulence from 22,000 ft to 24,000 ft, remarks: during the climb ZDVWC-05. 698 nm along the route, 48 nm southeast of the line.
as filed, and in English
DEN UA /OV DVV270030/TM 0130/FL240/TP BCS1/TB MOD 220-240/RM DURC ZDVWC-05
- Report
- a routine report filed through DEN
- Where
- 30 nm west (270°) of DVV
- Time
- 01:30 UTC
- Height
- at 24,000 ft
- Aircraft
- BCS1
- Turbulence
- moderate from 22,000 ft to 24,000 ft
- Remarks
- during the climb ZDVWC-05
- CRJ2 at 19,000 ft, 11 nm northwest, 7:47 pm CDT (00:47 UTC): moderate chop turbulence, remarks: ZDVWC-13. 698 nm along the route, 11 nm northwest of the line.
as filed, and in English
EGE UA /OV RLG010052/TM 0047/FL190/TP CRJ2/TB COSN MOD CHOP/RM ZDVWC-13
- Report
- a routine report filed through EGE
- Where
- 52 nm north (010°) of RLG
- Time
- 00:47 UTC
- Height
- at 19,000 ft
- Aircraft
- CRJ2
- Turbulence
- cosn moderate chop
- Remarks
- ZDVWC-13
- E75L at 28,000 ft, 7 nm northwest, 8:31 pm CDT (01:31 UTC): moderate turbulence, remarks: ZDVWC-03. 767 nm along the route, 7 nm northwest of the line.
as filed, and in English
EEO UA /OV EKR085036/TM 0131/FL280/TP E75L/TB MOD/RM ZDVWC-03
- Report
- a routine report filed through EEO
- Where
- 36 nm east (085°) of EKR
- Time
- 01:31 UTC
- Height
- at 28,000 ft
- Aircraft
- E75L
- Turbulence
- moderate
- Remarks
- ZDVWC-03
- BE20 at 14,000 ft, 41 nm southeast, 7:20 pm CDT (00:20 UTC): light turbulence. 249 nm along the route, 41 nm southeast of the line.
as filed, and in English
FSD UA /OV FSD340035/TM 0020/FL140/TP BE20/TB CONS LGT/ NEG 120
- Report
- a routine report filed through FSD
- Where
- 35 nm north (340°) of FSD
- Time
- 00:20 UTC
- Height
- at 14,000 ft
- Aircraft
- BE20
- Turbulence
- continuous light no at 12,000 ft
- B763 at 32,000 ft, 35 nm northwest, 8:29 pm CDT (01:29 UTC): light to moderate clear-air turbulence, remarks: zdvwc. 419 nm along the route, 35 nm northwest of the line.
as filed, and in English
RAP UA /OV RAP084081/TM 0129/FL320/TP B763/TB OCNL LGT-MOD CAT/RM ZDVWC
- Report
- a routine report filed through RAP
- Where
- 81 nm east (084°) of RAP
- Time
- 01:29 UTC
- Height
- at 32,000 ft
- Aircraft
- B763
- Turbulence
- occasional light to moderate clear-air turbulence
- Remarks
- zdvwc
- C56X at 13,000 ft, 31 nm northwest, 8:33 pm CDT (01:33 UTC): light chop turbulence, remarks: zdvwc. 668 nm along the route, 31 nm northwest of the line.
as filed, and in English
LAR UA /OV LAR/TM 0133/FL130/TP C56X/SK BASE160/TB OCNL CONS LGT CHOP/RM ZDVWC
- Report
- a routine report filed through LAR
- Where
- over LAR
- Time
- 01:33 UTC
- Height
- at 13,000 ft
- Aircraft
- C56X
- Sky
- BASE160
- Turbulence
- occasional continuous light chop
- Remarks
- zdvwc
- CL35 at 41,000 ft, 14 nm southeast, 9:40 pm CDT (02:40 UTC): remarks: mtw +/-50FT a 15-knot loss of airspeed ZDVWC-05. 748 nm along the route, 14 nm southeast of the line.
as filed, and in English
EGE UA /OV RLG/TM 0240/FL410/TP CL35/RM MTW +/-50FT +/-15KT ZDVWC-05
- Report
- a routine report filed through EGE
- Where
- over RLG
- Time
- 02:40 UTC
- Height
- at 41,000 ft
- Aircraft
- CL35
- Remarks
- mtw +/-50FT a 15-knot loss of airspeed ZDVWC-05
- B738 at 32,000 ft, 26 nm southeast, 8:42 pm CDT (01:42 UTC): light to moderate turbulence up to 30,000 ft, remarks: during the climb ZDVWC-05. 748 nm along the route, 26 nm southeast of the line.
as filed, and in English
EGE UA /OV RLG160014/TM 0142/FL320/TP B738/TB LGT-MOD BLO 300/RM DURC ZDVWC-05
- Report
- a routine report filed through EGE
- Where
- 14 nm south (160°) of RLG
- Time
- 01:42 UTC
- Height
- at 32,000 ft
- Aircraft
- B738
- Turbulence
- light to moderate below 30,000 ft
- Remarks
- during the climb ZDVWC-05
- UAL796 at 30,000 ft, 31 nm northwest, 7:09 pm CDT (00:09 UTC): light chop turbulence, wind 230° at 42 knots. At the destination end, 31 nm northwest of the line.
as filed, and in English
ARP UAL796 4004N 10755W 0009 F300 230/042KT TB OCNL LGT CHOP IC
- Report
- a routine report filed through ARP
- C501 at 15,000 ft, 45 nm southwest, 9:32 pm CDT (02:32 UTC): light chop turbulence, light rime icing, -2 °C, remarks: zdvwc. At the destination end, 45 nm southwest of the line.
as filed, and in English
GJT UA /OV JNC090020/TM 0232/FL150/TP C501/TA M02/TB INTMT LGT CHOP/IC LGT RIME/RM ZDVWC
- Report
- a routine report filed through GJT
- Where
- 20 nm east (090°) of JNC
- Time
- 02:32 UTC
- Height
- at 15,000 ft
- Aircraft
- C501
- Temperature
- −2 °C
- Turbulence
- intermittent light chop
- Icing
- light rime
- Remarks
- zdvwc
- LJ60 at 15,000 ft, 41 nm south, 7:28 pm CDT (00:28 UTC): light to moderate icing from 16,500 ft to 19,000 ft, -13 °C, remarks: during the descent zdvwc. At the destination end, 41 nm south of the line.
as filed, and in English
MTJ UA /OV MTJ030030/TM 0028/FL150/TP LJ60/TA M13/IC LGT-MOD 190-165/RM DURD ZDVWC
- Report
- a routine report filed through MTJ
- Where
- 30 nm northeast (030°) of MTJ
- Time
- 00:28 UTC
- Height
- at 15,000 ft
- Aircraft
- LJ60
- Temperature
- −13 °C
- Icing
- light to moderate from 19,000 ft to 16,500 ft
- Remarks
- during the descent zdvwc
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 8 forecast points nearest it (DLH, AXN, ABR, PIR, RAP, BFF, DEN, GJT). 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 | 180° at 14 kt | +7 kt | 17 °C | 113 kt | 7 h 08 min | 4:07 am MDT (10:07 UTC) |
| 6,500 ft | 210° at 18 kt | +16 kt | 15 °C | 104 kt | 7 h 46 min | 4:45 am MDT (10:45 UTC) |
| 8,500 ft | 220° at 24 kt | +23 kt | 12 °C | 97 kt | 8 h 19 min | 5:18 am MDT (11:18 UTC) |
| 10,500 ft | 230° at 28 kt | +28 kt | 9 °C | 92 kt | 8 h 46 min | 5:45 am MDT (11:45 UTC) |
| 12,500 ft | 230° at 32 kt | +32 kt | 4 °C | 88 kt | 9 h 10 min | 6:09 am MDT (12:09 UTC) |
| 14,500 ft | 230° at 33 kt | +33 kt | -1 °C | 87 kt | 9 h 17 min | 6:16 am MDT (12:16 UTC) |
| 16,500 ft | 240° at 33 kt | +34 kt | -6 °C | 86 kt | 9 h 23 min | 6:22 am MDT (12:22 UTC) |
| 18,000 ft FL180 | 240° at 34 kt | +34 kt | -10 °C | 86 kt | 9 h 23 min | 6:22 am MDT (12:22 UTC) |
| 24,000 ft FL240 | 240° at 39 kt | +40 kt | -21 °C | 80 kt | 10 h 05 min | 7:04 am MDT (13:04 UTC) |
| 30,000 ft FL300 | 240° at 40 kt | +41 kt | -34 °C | 79 kt | 10 h 13 min | 7:12 am MDT (13:12 UTC) |
| 34,000 ft FL340 | 250° at 48 kt | +47 kt | -40 °C | 73 kt | 11 h 03 min | 8:02 am MDT (14:02 UTC) |
| 39,000 ft FL390 | 250° at 52 kt | +51 kt | -47 °C | 69 kt | 11 h 42 min | 8:41 am MDT (14:41 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| DLH | used from 0 nm out; 25 nm from the line | 080/28 | 240/21 15° | 250/26 9° | 250/32 3° | 260/42 -11° | 270/40 -21° | 260/43 -36° | 260/46 -46° | 260/65 -54° |
| AXN | used from 50 nm out; 71 nm from the line | 100/14 | 250/21 14° | 240/24 12° | 240/31 5° | 260/36 -10° | 260/40 -21° | 250/42 -36° | 260/48 -45° | 260/53 -50° |
| ABR | used from 199 nm out; 70 nm from the line | 070/14 | 250/10 17° | 270/16 11° | 260/28 5° | 260/36 -10° | 260/41 -22° | 270/33 -37° | 260/42 -42° | 260/50 -48° |
| PIR | used from 299 nm out; 62 nm from the line | 170/22 19° | 190/25 13° | 210/32 6° | 240/23 -9° | 250/32 -21° | 250/38 -36° | 260/44 -40° | 260/52 -47° | |
| RAP | used from 449 nm out; 94 nm from the line | 180/23 12° | 200/38 13° | 210/38 6° | 220/28 -10° | 230/34 -21° | 230/37 -36° | 250/52 -38° | 250/59 -46° | |
| BFF | used from 498 nm out; 49 nm from the line | 180/28 | 220/33 15° | 210/31 7° | 230/32 -9° | 220/41 -21° | 220/40 -33° | 240/47 -36° | 250/54 -46° | |
| DEN | used from 648 nm out; 70 nm from the line | 240/21 14° | 250/44 6° | 220/49 -8° | 220/49 -21° | 230/54 -30° | 240/57 -35° | 240/49 -45° | ||
| GJT | used from 748 nm out; 79 nm from the line | 210/43 7° | 230/45 1° | 220/49 -12° | 220/62 -22° | 220/59 -28° | 230/60 -33° | 220/55 -45° |
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 |
|---|---|---|---|---|---|---|---|
| DLH Duluth, MN | departure | VFR Sky: a broken layer at 12,000 feet | from the north (360°) at 8 knots | 10+ mi | 12,000 ft | 1,427 ft | 9:55 pm CDT (02:55 UTC) |
| COQ Cloquet, MN | 20 nm out, 5 nm east of the line | VFR | from the north (010°) at 6 knots | 10+ mi | none | 1,279 ft | 02:55 UTC |
| GHW Glenwood, MN | 150 nm out, 2 nm east of the line | VFR Sky: a few clouds at 14,000 feet | from the north (010°) at 10 knots | 10+ mi | none | 1,393 ft | 02:55 UTC |
| ATY Watertown, SD | 239 nm out, 2 nm northeast of the line | IFR Sky: overcast at 500 feet | from the north-northeast (030°) at 7 knots | 10+ mi | 500 ft | 1,749 ft | 02:53 UTC |
| HON Huron, SD | 289 nm out, 5 nm south of the line | IFR Sky: overcast at 900 feet | from the north-northwest (330°) at 10 knots | 10+ mi | 900 ft | 1,288 ft | 02:55 UTC |
| ICR Winner, SD | 389 nm out, 18 nm southeast of the line | marginal VFR Sky: overcast at 1,400 feet | from the north (350°) at 10 knots | 10+ mi | 1,400 ft | 2,032 ft | 02:53 UTC |
| SUO Rosebud, SD | 429 nm out, 3 nm northeast of the line | low IFR Sky: overcast at 300 feet Weather: mist | from the north-northeast (020°) at 6 knots | 3 mi | 300 ft | 2,724 ft | 02:35 UTC |
| AIA Alliance, NE | 538 nm out, 11 nm southeast of the line | VFR | from the east (090°) at 9 knots | 10+ mi | none | 3,930 ft | 02:53 UTC |
| CYS Cheyenne, WY | 638 nm out, 5 nm south of the line, tower | VFR | from the east (090°) at 6 knots | 10+ mi | none | 6,159 ft | 02:53 UTC |
| GNB Granby, CO | 718 nm out, 24 nm southeast of the line | VFR Sky: overcast at 9,000 feet | calm | 10+ mi | 9,000 ft | 8,207 ft | 02:35 UTC |
| EGE Eagle, CO | 777 nm out, 18 nm southeast of the line, tower | VFR | from the west (280°) at 5 knots | 10+ mi | none | 6,547 ft | 02:56 UTC |
| RIL Rifle, CO | destination | VFR Sky: a few clouds at 1,900 feet, a broken layer at 6,500 feet, overcast at 10,000 feet Weather: light rain | from the northeast (050°) at 7 knots | 9 mi | 6,500 ft | 5,536 ft | 8:53 pm MDT (02:53 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 RIL when you get there the forecast at the estimated arrival, 4:07 am MDT (10:07 UTC)
Wind from the south at 14 knots, gusting to 30, visibility more than 6 miles, scattered clouds at 5,000 feet, a broken layer at 11,000 feet VFR
The whole forecast for RIL
- From Sun 7:00 pm MDT (01:00 UTC): wind from the west at 9 knots, visibility more than 6 miles, scattered clouds at 7,000 feet, a broken layer at 11,000 feet
- At times between Sun 7:00 pm MDT (01:00 UTC) and 10:00 pm MDT (04:00 UTC): wind variable at 20 knots, gusting to 35, visibility 4 miles, light rain showers, a broken layer at 7,000 feet
- From Sun 10:00 pm MDT (04:00 UTC): wind from the south-southeast at 15 knots, gusting to 32, visibility more than 6 miles, low-level wind shear, scattered clouds at 5,000 feet, a broken layer at 11,000 feet
- 30% chance between Sun 10:00 pm MDT (04:00 UTC) and 12:00 am MDT (06:00 UTC): visibility 4 miles, light rain showers, a broken layer at 5,000 feet
- From Mon 12:00 am MDT (06:00 UTC): wind from the south at 14 knots, gusting to 30, visibility more than 6 miles, scattered clouds at 5,000 feet, a broken layer at 11,000 feet
- 30% chance between Mon 5:00 am MDT (11:00 UTC) and 6:00 am MDT (12:00 UTC): visibility 6 miles, light rain showers, overcast at 2,500 feet
- From Mon 6:00 am MDT (12:00 UTC): wind from the southeast at 7 knots, visibility more than 6 miles, scattered clouds at 4,000 feet, a broken layer at 6,000 feet
- 30% chance between Mon 6:00 am MDT (12:00 UTC) and 12:00 pm MDT (18:00 UTC): visibility 6 miles, light rain showers, a broken layer at 4,000 feet
The forecast for DLH, the departure
- From Sun 7:00 pm CDT (00:00 UTC): wind light and variable, visibility more than 6 miles, a broken layer at 12,000 feet
- From Mon 12:00 am CDT (05:00 UTC): wind from the east at 11 knots, gusting to 20, visibility more than 6 miles, overcast at 1,200 feet
- From Mon 4:00 am CDT (09:00 UTC): wind from the east at 15 knots, gusting to 22, visibility more than 6 miles, overcast at 600 feet
- From Mon 6:00 am CDT (11:00 UTC): wind from the east at 16 knots, gusting to 24, visibility 4 miles, mist, overcast at 300 feet
- From Mon 12:00 pm CDT (17:00 UTC): wind from the east-northeast at 15 knots, gusting to 25, visibility more than 6 miles, overcast at 300 feet
- From Mon 5:00 pm CDT (22:00 UTC): wind from the east-northeast at 15 knots, gusting to 25, visibility 6 miles, light rain showers, overcast at 400 feet
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 DLH 6:27 pm CDT (23:27 UTC), at RIL 6:36 pm MDT (00:36 UTC) (civil twilight ends 7:03 pm MDT (01:03 UTC)). At 120 knots the arrival at RIL is before sunrise there (7:17 am MDT (13:17 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: Duluth International, Rifle Garfield County.
