Granby-Grand County to Miami-Opa Locka Executive GNB → OPF
1,538 nautical miles (1,769 statute miles) southeast on a straight line, true course 116°, about 108° magnetic at the departure end (variation 8E). At 120 knots that is 10 h 19 min at the quickest height in today's winds (34,000 ft, a 29-knot tailwind), arriving about 2:21 pm EDT (18:21 UTC). 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 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 first 90 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Near the route, at the departure end.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 42,000 ft. Over the first 120 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the first 150 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Near the route, at the departure end.
- 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 210 to 579 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 GNB.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
Not fetched just now.
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 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 13 forecast points nearest it (DEN, GLD, GCK, GAG, ICT, TUL, FSM, LIT, JAN, MOB, TLH, PIE, MIA). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 3,500 ft | 230° at 10 kt | −3 kt | 123 kt | 12 h 30 min | 4:32 pm EDT (20:32 UTC) | |
| 5,500 ft | 240° at 16 kt | −8 kt | 20 °C | 128 kt | 12 h 01 min | 4:03 pm EDT (20:03 UTC) |
| 7,500 ft | 250° at 15 kt | −9 kt | 15 °C | 129 kt | 11 h 55 min | 3:57 pm EDT (19:57 UTC) |
| 9,500 ft | 250° at 15 kt | −10 kt | 12 °C | 130 kt | 11 h 50 min | 3:52 pm EDT (19:52 UTC) |
| 11,500 ft | 260° at 15 kt | −12 kt | 9 °C | 132 kt | 11 h 39 min | 3:41 pm EDT (19:41 UTC) |
| 13,500 ft | 260° at 16 kt | −12 kt | 4 °C | 132 kt | 11 h 39 min | 3:41 pm EDT (19:41 UTC) |
| 15,500 ft | 250° at 17 kt | −12 kt | 0 °C | 132 kt | 11 h 39 min | 3:41 pm EDT (19:41 UTC) |
| 17,500 ft | 250° at 19 kt | −12 kt | -5 °C | 132 kt | 11 h 39 min | 3:41 pm EDT (19:41 UTC) |
| 18,000 ft FL180 | 250° at 19 kt | −12 kt | -6 °C | 132 kt | 11 h 39 min | 3:41 pm EDT (19:41 UTC) |
| 24,000 ft FL240 | 260° at 25 kt | −18 kt | -17 °C | 138 kt | 11 h 09 min | 3:11 pm EDT (19:11 UTC) |
| 30,000 ft FL300 | 270° at 33 kt | −28 kt | -30 °C | 148 kt | 10 h 24 min | 2:26 pm EDT (18:26 UTC) |
| 34,000 ft FL340 | 270° at 33 kt | −29 kt | -40 °C | 149 kt | 10 h 19 min | 2:21 pm EDT (18:21 UTC) |
| 39,000 ft FL390 | 280° at 30 kt | −29 kt | -50 °C | 149 kt | 10 h 19 min | 2:21 pm EDT (18:21 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| DEN | used from 0 nm out; 35 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° | ||
| GLD | used from 150 nm out; 54 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° | |
| GCK | used from 200 nm out; 50 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° | |
| GAG | used from 349 nm out; 68 nm from the line | 220/40 19° | 230/28 14° | 240/23 8° | 230/21 -6° | 240/31 -19° | 250/66 -29° | 260/58 -38° | 260/47 -49° | |
| ICT | used from 399 nm out; 61 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° |
| TUL | used from 449 nm out; 58 nm from the line | 210/37 | 240/29 17° | 260/15 14° | 260/11 7° | 240/22 -6° | 250/29 -16° | 270/45 -29° | 270/47 -40° | 280/44 -50° |
| FSM | used from 549 nm out; 48 nm from the line | 210/27 | 250/23 16° | 250/20 13° | 240/17 8° | 250/18 -6° | 260/31 -16° | 280/42 -30° | 280/44 -40° | 290/38 -51° |
| LIT | used from 699 nm out; 48 nm from the line | 220/21 | 230/17 16° | 250/24 12° | 260/15 7° | 260/13 -5° | 280/25 -16° | 290/35 -30° | 300/42 -40° | 300/40 -52° |
| JAN | used from 799 nm out; 73 nm from the line | 230/10 | 270/13 18° | 270/11 12° | 310/11 6° | 300/15 -4° | 300/22 -16° | 310/33 -31° | 320/37 -41° | 330/41 -52° |
| MOB | used from 948 nm out; 65 nm from the line | 330/5 | 330/6 19° | 340/6 11° | 330/10 7° | 320/16 -5° | 310/26 -16° | 340/40 -32° | 340/47 -42° | 350/51 -52° |
| TLH | used from 1148 nm out; 78 nm from the line | 320/18 | 350/31 18° | 340/24 13° | 310/17 8° | 280/22 -7° | 300/25 -17° | 320/28 -33° | 320/24 -41° | 320/25 -50° |
| PIE | used from 1248 nm out; 89 nm from the line | 350/6 | L/V 18° | 290/6 14° | 280/9 9° | 250/18 -6° | 250/23 -17° | 240/30 -31° | 220/31 -41° | 220/30 -52° |
| MIA | used from 1448 nm out; 69 nm from the line | 150/7 | 140/5 17° | 160/5 14° | L/V 9° | 230/8 -5° | 230/8 -17° | 150/11 -32° | 150/25 -41° | 180/29 -51° |
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 |
|---|---|---|---|---|---|---|---|
| GNB Granby, CO | departure | no report just now | 8,207 ft | ||||
| APA Denver, CO | 60 nm out, 7 nm southwest of the line, tower | no report just now | 5,884 ft | ||||
| GCK Garden City, KS | 280 nm out, 6 nm west of the line, tower | no report just now | 2,890 ft | ||||
| WDG Enid, OK | 439 nm out, 15 nm south of the line, tower | no report just now | 1,167 ft | ||||
| SWO Stillwater, OK | 479 nm out, 8 nm southwest of the line, tower | no report just now | 1,000 ft | ||||
| FSM Fort Smith, AR | 619 nm out, 21 nm northeast of the line, tower | no report just now | 469 ft | ||||
| JAN Jackson, MS | 899 nm out, 10 nm southwest of the line, tower | no report just now | 346 ft | ||||
| LUL Laurel, MS | 958 nm out, 15 nm southwest of the line | no report just now | 238 ft | ||||
| DTS Destin, FL | 1108 nm out, 8 nm east of the line, tower | no report just now | 22 ft | ||||
| SPG St Petersburg, FL | 1368 nm out, 6 nm northeast of the line, tower | no report just now | 6 ft | ||||
| SRQ Sarasota/Bradenton, FL | 1388 nm out, 9 nm southwest of the line, tower | no report just now | 29 ft | ||||
| OPF Miami, FL | destination | no report just now | 8 ft |
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 OPF when you get there the forecast at the estimated arrival, 2:21 pm EDT (18:21 UTC)
OPF has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/8911 DENVER, CO, Monday, October 12, 2026 UTC 9 nm from the route, at the departure end · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · today · ZDV
Daylight
Sunset at GNB 6:27 pm MDT (00:27 UTC), at OPF 6:56 pm EDT (22:56 UTC) (civil twilight ends 7:19 pm EDT (23:19 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: Granby-Grand County, Miami-Opa Locka Executive.