Jamestown Regional to Denver International JMS → DEN
498 nautical miles (573 statute miles) southwest on a straight line, true course 214°, about 210° magnetic at the departure end (variation 4E). At 120 knots that is 4 h 45 min at the quickest height in today's winds (4,500 ft, a 15-knot headwind), arriving about 5:20 am MDT (11:20 UTC), after sunset at the destination. Right now JMS is IFR, wind from the north-northeast (020°) at 12 knots; DEN is VFR, wind from the southwest (220°) at 21 knots, gusting to 29. 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: 1,226 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 319 nm of the route.
- 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 309 to 339 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the last 159 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 100 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 JMS.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- A20N at 25,000 ft, 45 nm west, 1:19 am CDT (06:19 UTC): light chop turbulence up to 26,000 ft, remarks: during the climb ZDVWC-06. At the destination end, 45 nm west of the line.
as filed, and in English
DEN UA /OV DEN250045/TM 0619/FL250/TP A20N/TB OCNL LGT CHOP BLO 260/RM DURC. ZDVWC-06
- Report
- a routine report filed through DEN
- Where
- 45 nm west (250°) of DEN
- Time
- 06:19 UTC
- Height
- at 25,000 ft
- Aircraft
- A20N
- Turbulence
- occasional light chop below 26,000 ft
- Remarks
- during the climb ZDVWC-06
- B738 descending, 3 nm south, 1:15 am CDT (06:15 UTC): light chop turbulence. At the destination end, 3 nm south of the line.
as filed, and in English
DEN UA /OV DEN/TM 0615/FLDURD/TP B738/TB LGT CHOP
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 06:15 UTC
- Height
- during the descent
- Aircraft
- B738
- Turbulence
- light chop
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 5 forecast points nearest it (ABR, PIR, RAP, BFF, DEN). 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 | 170° at 19 kt | +15 kt | 17 °C | 105 kt | 4 h 45 min | 5:20 am MDT (11:20 UTC) |
| 6,500 ft | 190° at 20 kt | +19 kt | 16 °C | 101 kt | 4 h 56 min | 5:31 am MDT (11:31 UTC) |
| 8,500 ft | 210° at 23 kt | +23 kt | 13 °C | 97 kt | 5 h 08 min | 5:43 am MDT (11:43 UTC) |
| 10,500 ft | 220° at 27 kt | +27 kt | 10 °C | 93 kt | 5 h 21 min | 5:56 am MDT (11:56 UTC) |
| 12,500 ft | 220° at 30 kt | +30 kt | 5 °C | 90 kt | 5 h 32 min | 6:07 am MDT (12:07 UTC) |
| 14,500 ft | 230° at 30 kt | +29 kt | 0 °C | 91 kt | 5 h 28 min | 6:03 am MDT (12:03 UTC) |
| 16,500 ft | 230° at 30 kt | +28 kt | -5 °C | 92 kt | 5 h 25 min | 6:00 am MDT (12:00 UTC) |
| 18,000 ft FL180 | 240° at 30 kt | +28 kt | -9 °C | 92 kt | 5 h 25 min | 6:00 am MDT (12:00 UTC) |
| 24,000 ft FL240 | 240° at 37 kt | +33 kt | -21 °C | 87 kt | 5 h 43 min | 6:18 am MDT (12:18 UTC) |
| 30,000 ft FL300 | 240° at 37 kt | +33 kt | -35 °C | 87 kt | 5 h 43 min | 6:18 am MDT (12:18 UTC) |
| 34,000 ft FL340 | 250° at 46 kt | +36 kt | -38 °C | 84 kt | 5 h 56 min | 6:31 am MDT (12:31 UTC) |
| 39,000 ft FL390 | 250° at 52 kt | +39 kt | -47 °C | 81 kt | 6 h 09 min | 6:44 am MDT (12:44 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| ABR | used from 0 nm out; 73 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 100 nm out; 49 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 249 nm out; 70 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 299 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 448 nm out; 25 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° |
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 |
|---|---|---|---|---|---|---|---|
| JMS Jamestown, ND | departure | IFR Sky: overcast at 600 feet | from the north-northeast (020°) at 12 knots | 10+ mi | 600 ft | 1,499 ft | 12:56 am CDT (05:56 UTC) |
| ASY Ashley, ND | 60 nm out, 7 nm southeast of the line | no report just now | 2,034 ft | ||||
| MBG Mobridge, SD | 110 nm out, 15 nm northwest of the line | IFR Sky: a broken layer at 800 feet, overcast at 1,200 feet | from the north-northeast (030°) at 9 knots | 7 mi | 800 ft | 1,716 ft | 06:21 UTC |
| PHP Philip, SD | 209 nm out, 10 nm west of the line | low IFR Sky: overcast at 300 feet | from the north-northeast (030°) at 12 knots | 10+ mi | 300 ft | 2,209 ft | 05:55 UTC |
| GRN Gordon, NE | 289 nm out, 8 nm southeast of the line | low IFR Sky: overcast at 300 feet Weather: mist | from the east (080°) at 9 knots | 1.25 mi | 300 ft | 3,562 ft | 06:15 UTC |
| AIA Alliance, NE | 339 nm out, 8 nm southeast of the line | VFR | from the east (100°) at 5 knots | 10+ mi | none | 3,930 ft | 05:53 UTC |
| BFF Scottsbluff, NE | 369 nm out, 18 nm northwest of the line | VFR | from the west-northwest (300°) at 9 knots | 10+ mi | none | 3,967 ft | 05:53 UTC |
| IBM Kimball, NE | 408 nm out, 2 nm north of the line | VFR | calm | 10+ mi | none | 4,925 ft | 06:15 UTC |
| GXY Greeley, CO | 468 nm out, 16 nm northwest of the line | VFR | from the south-southwest (210°) at 4 knots | 10+ mi | none | 4,696 ft | 05:56 UTC |
| DEN Denver, CO | destination | VFR Sky: a few clouds at 6,000 feet, scattered clouds at 22,000 feet | from the southwest (220°) at 21 knots, gusting to 29 | 10+ mi | none | 5,433 ft | 11:53 pm MDT (05:53 UTC) |
The highest airport on this list sits at 5,433 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At DEN when you get there the forecast at the estimated arrival, 5:20 am MDT (11:20 UTC)
Wind from the south at 11 knots, visibility more than 6 miles, a few clouds at 22,000 feet VFR
The whole forecast for DEN
- From Mon 12:00 am MDT (06:00 UTC): wind from the south-southwest at 15 knots, gusting to 25, visibility more than 6 miles, a few clouds at 14,000 feet
- From Mon 3:00 am MDT (09:00 UTC): wind from the south at 11 knots, visibility more than 6 miles, a few clouds at 22,000 feet
- From Mon 10:00 am MDT (16:00 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, a few clouds at 15,000 feet
- From Mon 11:00 pm MDT (05:00 UTC): wind from the north at 10 knots, visibility more than 6 miles, a few clouds at 3,000 feet
The forecast for JMS, the departure
- From Mon 1:00 am CDT (06:00 UTC): wind from the north-northeast at 11 knots, gusting to 20, visibility more than 6 miles, overcast at 500 feet
- At times between Mon 3:00 am CDT (08:00 UTC) and 4:00 am CDT (09:00 UTC): visibility 4 miles, light rain, mist
- From Mon 6:00 am CDT (11:00 UTC): wind from the north-northeast at 11 knots, visibility 4 miles, mist, overcast at 400 feet
- 30% chance between Mon 6:00 am CDT (11:00 UTC) and 10:00 am CDT (15:00 UTC): light rain
- From Mon 10:00 am CDT (15:00 UTC): wind from the north at 9 knots, visibility 5 miles, light rain, mist, overcast at 600 feet
- From Mon 5:00 pm CDT (22:00 UTC): wind from the north-northwest at 10 knots, visibility more than 6 miles, overcast at 800 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 JMS 6:53 pm CDT (23:53 UTC), at DEN 6:22 pm MDT (00:22 UTC) (civil twilight ends 6:49 pm MDT (00:49 UTC)). At 120 knots the arrival at DEN 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. 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: Jamestown Regional, Denver International.