Denver International to Central Wyoming Regional DEN → RIW
257 nautical miles (296 statute miles) northwest on a straight line, true course 320°, about 312° magnetic at the departure end (variation 8E). At 120 knots that is 1 h 48 min at the quickest height in today's winds (8,500 ft, a 23-knot tailwind), arriving about 7:36 pm MDT (01:36 UTC), after sunset at the destination. Right now DEN is VFR, wind from the south (180°) at 13 knots, gusting to 22; RIW is VFR, wind from the north (010°) at 14 knots, gusting to 19. 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: 1,463 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 W65W: thunderstorms (a convective SIGMET) up to 32,000 ft, moving from the southwest at 40 knots, until 6:55 pm MDT (00:55 UTC). Near the route, 227 nm along the route.
as issued
WSUS33 KKCI 112255 MKCW WST 112255 CONVECTIVE SIGMET 65W VALID UNTIL 0055Z MT WY FROM 40NW SHR-80NE CZI-40SSE BOY-60ENE JAC-40NW SHR AREA TS MOV FROM 22040KT. TOPS TO FL320.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the whole route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the whole route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 158 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 138 nm of the route.
- AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Near the route, 178 nm along the route.
- 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, at the destination end.
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 DEN.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- urgent E545 at 6,000 ft, 18 nm southwest, 3:49 pm MDT (21:49 UTC): remarks: low-level wind shear + 5 knots fap runway 17L. At the departure end, 18 nm southwest of the line.
as filed, and in English
APA UUA /OV APA350002/TM 2149/FL060/TP E545/RM LLWS +/- 5 KT FAP RWY 17L
- Report
- an urgent report filed through APA
- Where
- 2 nm north (350°) of APA
- Time
- 21:49 UTC
- Height
- at 6,000 ft
- Aircraft
- E545
- Remarks
- low-level wind shear + 5 knots fap runway 17L
- GLF5 at 45,000 ft, 38 nm south, 4:44 pm MDT (22:44 UTC): moderate turbulence, remarks: ZDVWC-46. At the departure end, 38 nm south of the line.
as filed, and in English
COS UA /OV COS350025/TM 2244/FL450/TP GLF5/TB MOD /RM ZDVWC-46
- Report
- a routine report filed through COS
- Where
- 25 nm north (350°) of COS
- Time
- 22:44 UTC
- Height
- at 45,000 ft
- Aircraft
- GLF5
- Turbulence
- moderate
- Remarks
- ZDVWC-46
- BCS3 at 24,000 ft, 6 nm northeast, 5:28 pm MDT (23:28 UTC): moderate turbulence from 22,000 ft to 24,000 ft, remarks: during the descent. 40 nm along the route, 6 nm northeast of the line.
as filed, and in English
DEN UA /OV DEN320045/TM 2328/FL240/TP BCS3/TB MOD 240-220/RM DURD
- Report
- a routine report filed through DEN
- Where
- 45 nm northwest (320°) of DEN
- Time
- 23:28 UTC
- Height
- at 24,000 ft
- Aircraft
- BCS3
- Turbulence
- moderate from 24,000 ft to 22,000 ft
- Remarks
- during the descent
- A319 at 22,000 ft, 4 nm west, 3:42 pm MDT (21:42 UTC): moderate chop turbulence, remarks: ZDVWC-13. 59 nm along the route, 4 nm west of the line.
as filed, and in English
BJC UA /OV BJC322047/TM 2142/FL220/TP A319/TB MOD CHOP/RM ZDVWC-13
- Report
- a routine report filed through BJC
- Where
- 47 nm northwest (322°) of BJC
- Time
- 21:42 UTC
- Height
- at 22,000 ft
- Aircraft
- A319
- Turbulence
- moderate chop
- Remarks
- ZDVWC-13
- B738 at 37,000 ft, 27 nm northeast, 3:10 pm MDT (21:10 UTC): moderate chop turbulence, remarks: mtw a 40-knot loss of airspeed zdvwc. 148 nm along the route, 27 nm northeast of the line.
as filed, and in English
LAR UA /OV MBW290020/TM 2110/FL370/TP B738/TB MOD CHOP/RM MTW +/-40KT ZDVWC
- Report
- a routine report filed through LAR
- Where
- 20 nm west (290°) of MBW
- Time
- 21:10 UTC
- Height
- at 37,000 ft
- Aircraft
- B738
- Turbulence
- moderate chop
- Remarks
- mtw a 40-knot loss of airspeed zdvwc
- A320 at 8,000 ft, 31 nm east, 5:42 pm MDT (23:42 UTC): light chop turbulence from 8,000 ft to 16,000 ft, remarks: during the climb. At the departure end, 31 nm east of the line.
as filed, and in English
DEN UA /OV DEN080030/TM 2342/FL080/TP A320/TB LGT CHOP 080-160/RM DURC
- Report
- a routine report filed through DEN
- Where
- 30 nm east (080°) of DEN
- Time
- 23:42 UTC
- Height
- at 8,000 ft
- Aircraft
- A320
- Turbulence
- light chop from 8,000 ft to 16,000 ft
- Remarks
- during the climb
- B738 at 35,000 ft, 46 nm northeast, 5:30 pm MDT (23:30 UTC): light turbulence, remarks: ZDVWC-07. At the departure end, 46 nm northeast of the line.
as filed, and in English
AKO UA /OV AKO270030/TM 2330/FL350/TP B738/TB CONS LGT /RM ZDVWC-07
- Report
- a routine report filed through AKO
- Where
- 30 nm west (270°) of AKO
- Time
- 23:30 UTC
- Height
- at 35,000 ft
- Aircraft
- B738
- Turbulence
- continuous light
- Remarks
- ZDVWC-07
- B737 at 6,500 ft, 3 nm south, 5:27 pm MDT (23:27 UTC): no turbulence. At the departure end, 3 nm south of the line.
as filed, and in English
DEN UA /OV DEN/TM 2327/FL065/TP B737/TB NEG TB ON FINAL RWY17R
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 23:27 UTC
- Height
- at 6,500 ft
- Aircraft
- B737
- Turbulence
- no turbulence on final runway 17R
- B737 descending, 3 nm south, 4:29 pm MDT (22:29 UTC): no turbulence up to 10,000 ft. At the departure end, 3 nm south of the line.
as filed, and in English
DEN UA /OV DEN/TM 2229/FLDURD/TP B737/TB NEG BLO 100
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 22:29 UTC
- Height
- during the descent
- Aircraft
- B737
- Turbulence
- no below 10,000 ft
- B737 at 15,000 ft, 21 nm east, 3:37 pm MDT (21:37 UTC): light turbulence, remarks: during the climb zdvwc. At the departure end, 21 nm east of the line.
as filed, and in English
DEN UA /OV DEN080020/TM 2137/FL150/TP B737/TB CONS LGT OCNL CHOP 150-180/RM DURC ZDVWC
- Report
- a routine report filed through DEN
- Where
- 20 nm east (080°) of DEN
- Time
- 21:37 UTC
- Height
- at 15,000 ft
- Aircraft
- B737
- Turbulence
- continuous light occasional chop from 15,000 ft to 18,000 ft
- Remarks
- during the climb zdvwc
- CRJ2 at 6,500 ft, 3 nm south, 3:31 pm MDT (21:31 UTC): light chop turbulence. At the departure end, 3 nm south of the line.
as filed, and in English
DEN UA /OV DEN/TM 2131/FL065/TP CRJ2/TB LGT CHOP ON FINAL RWY16L
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 21:31 UTC
- Height
- at 6,500 ft
- Aircraft
- CRJ2
- Turbulence
- light chop on final runway 16L
- B730 at 37,000 ft, 36 nm southwest, 3:11 pm MDT (21:11 UTC): remarks: mtw +15/-10KT ZDVWC-30. At the departure end, 36 nm southwest of the line.
as filed, and in English
COS UA /OV BRK310040/TM 2111/FL370/TP B730/RM MTW +15/-10KT ZDVWC-30
- Report
- a routine report filed through COS
- Where
- 40 nm northwest (310°) of BRK
- Time
- 21:11 UTC
- Height
- at 37,000 ft
- Aircraft
- B730
- Remarks
- mtw +15/-10KT ZDVWC-30
- E75L at 13,000 ft, 12 nm south, 3:07 pm MDT (21:07 UTC): light to moderate turbulence, remarks: below 17,000 ft. At the departure end, 12 nm south of the line.
as filed, and in English
DEN UA /OV DEN200010/TM 2107/FL130/TP E75L/TB LT OCNL MOD/RM BLO 170
- Report
- a routine report filed through DEN
- Where
- 10 nm south (200°) of DEN
- Time
- 21:07 UTC
- Height
- at 13,000 ft
- Aircraft
- E75L
- Turbulence
- lt occasional moderate
- Remarks
- below 17,000 ft
- B38M at 15,000 ft, 23 nm southeast, 3:04 pm MDT (21:04 UTC): light chop turbulence. At the departure end, 23 nm southeast of the line.
as filed, and in English
DEN UA /OV DEN130020/TM 2104/FL150/TP B38M/TB LT CHOP
- Report
- a routine report filed through DEN
- Where
- 20 nm southeast (130°) of DEN
- Time
- 21:04 UTC
- Height
- at 15,000 ft
- Aircraft
- B38M
- Turbulence
- lt chop
4 more routine reports are on the map.
Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 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 3 forecast points nearest it (DEN, RKS, LND). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 8,500 ft | 190° at 34 kt | −23 kt | 13 °C | 143 kt | 1 h 48 min | 7:36 pm MDT (01:36 UTC) |
| 10,500 ft | 190° at 39 kt | −22 kt | 9 °C | 142 kt | 1 h 49 min | 7:37 pm MDT (01:37 UTC) |
| 12,500 ft | 200° at 45 kt | −20 kt | 4 °C | 140 kt | 1 h 50 min | 7:38 pm MDT (01:38 UTC) |
| 14,500 ft | 210° at 47 kt | −16 kt | -1 °C | 136 kt | 1 h 53 min | 7:41 pm MDT (01:41 UTC) |
| 16,500 ft | 210° at 49 kt | −12 kt | -5 °C | 132 kt | 1 h 57 min | 7:45 pm MDT (01:45 UTC) |
| 18,000 ft FL180 | 220° at 50 kt | −8 kt | -9 °C | 128 kt | 2 h | 7:48 pm MDT (01:48 UTC) |
| 24,000 ft FL240 | 210° at 49 kt | −13 kt | -21 °C | 133 kt | 1 h 56 min | 7:44 pm MDT (01:44 UTC) |
| 30,000 ft FL300 | 220° at 44 kt | −10 kt | -33 °C | 130 kt | 1 h 59 min | 7:47 pm MDT (01:47 UTC) |
| 34,000 ft FL340 | 240° at 59 kt | +10 kt | -38 °C | 110 kt | 2 h 20 min | 8:08 pm MDT (02:08 UTC) |
| 39,000 ft FL390 | 240° at 66 kt | +17 kt | -47 °C | 103 kt | 2 h 30 min | 8:18 pm MDT (02:18 UTC) |
Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| DEN | used from 0 nm out; 25 nm from the line | 190/31 16° | 210/32 7° | 240/41 -8° | 230/47 -21° | 240/56 -32° | 250/65 -37° | 250/61 -47° | ||
| RKS | used from 99 nm out; 118 nm from the line | 190/43 | 210/65 3° | 210/57 -9° | 210/56 -21° | 210/47 -33° | 230/63 -37° | 240/77 -46° | ||
| LND | used from 148 nm out; 83 nm from the line | 180/33 10° | 190/50 3° | 210/59 -9° | 200/50 -21° | 190/41 -34° | 230/55 -39° | 240/65 -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 |
|---|---|---|---|---|---|---|---|
| DEN Denver, CO | departure | VFR Sky: a few clouds at 11,000 feet, scattered clouds at 14,000 feet, a broken layer at 22,000 feet | from the south (180°) at 13 knots, gusting to 22 | 10+ mi | 22,000 ft | 5,433 ft | 4:53 pm MDT (22:53 UTC) |
| FNL Fort Collins/Loveland, CO | 40 nm out, 11 nm northeast of the line, tower | VFR | from the north-northwest (330°) at 6 knots | 10+ mi | none | 5,020 ft | 22:56 UTC |
| LAR Laramie, WY | 99 nm out, 22 nm northeast of the line | VFR | from the south-southeast (160°) at 20 knots, gusting to 31 | 10+ mi | none | 7,283 ft | 22:53 UTC |
| RWL Rawlins, WY | 168 nm out, 11 nm southwest of the line | VFR | from the south (180°) at 5 knots | 10+ mi | none | 6,816 ft | 13:53 UTC |
| RIW Riverton, WY | destination | VFR Sky: scattered clouds at 10,000 feet | from the north (010°) at 14 knots, gusting to 19 | 10+ mi | none | 5,516 ft | 4:53 pm MDT (22:53 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 RIW when you get there the forecast at the estimated arrival, 7:36 pm MDT (01:36 UTC)
Wind from the north at 12 knots, gusting to 20, visibility 6 miles, light rain, scattered clouds at 3,000 feet, a broken layer at 5,000 feet VFR
The whole forecast for RIW
- From Sun 6:00 pm MDT (00:00 UTC): wind from the north at 12 knots, gusting to 20, visibility 6 miles, light rain, scattered clouds at 3,000 feet, a broken layer at 5,000 feet
- From Sun 8:00 pm MDT (02:00 UTC): wind from the east at 12 knots, gusting to 18, visibility more than 6 miles, scattered clouds at 2,500 feet, a broken layer at 4,000 feet
- From Mon 2:00 am MDT (08:00 UTC): wind from the west-northwest at 15 knots, gusting to 23, visibility more than 6 miles, scattered clouds at 2,500 feet, a broken layer at 5,000 feet
- From Mon 8:00 am MDT (14:00 UTC): wind from the north-northeast at 4 knots, visibility more than 6 miles, scattered clouds at 4,000 feet, a broken layer at 8,000 feet
The forecast for DEN, the departure
- From Sun 6:00 pm MDT (00:00 UTC): wind from the south at 14 knots, gusting to 21, visibility more than 6 miles, a few clouds at 10,000 feet, a few clouds at 14,000 feet and more above
- From Sun 8:00 pm MDT (02:00 UTC): wind from the southwest at 13 knots, gusting to 20, visibility more than 6 miles, a few clouds at 14,000 feet, scattered clouds at 22,000 feet
- From Mon 1:00 am MDT (07:00 UTC): wind from the south at 11 knots, visibility more than 6 miles, a few clouds at 22,000 feet
- From Mon 9:00 am MDT (15:00 UTC): wind from the southwest at 14 knots, gusting to 21, visibility more than 6 miles, clear skies
- From Mon 4:00 pm MDT (22:00 UTC): wind from the south at 9 knots, visibility more than 6 miles, clear skies
- From Mon 7:00 pm MDT (01:00 UTC): wind from the northeast at 8 knots, visibility more than 6 miles, clear skies
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 DEN 6:24 pm MDT (00:24 UTC), at RIW 6:36 pm MDT (00:36 UTC) (civil twilight ends 7:04 pm MDT (01:04 UTC)). At 120 knots the arrival at RIW is after sunset there (6:37 pm MDT (00:37 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: Denver International, Central Wyoming Regional.