Robert Gray Army Airfield to Fort Smith Regional GRK → FSM
310 nautical miles (356 statute miles) northeast on a straight line, true course 033°, about 029° magnetic at the departure end (variation 4E). At 120 knots that is 2 h 07 min at the quickest height in today's winds (3,500 ft, a 27-knot tailwind), arriving about 11:04 am CDT (16:04 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
No SIGMET or AIRMET covers any part of this route right now.
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 GRK.
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 08:00–15:00 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 3 forecast points nearest it (CLL, DAL, FSM). 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 | 210° at 27 kt | −27 kt | 147 kt | 2 h 07 min | 11:04 am CDT (16:04 UTC) | |
| 5,500 ft | 210° at 22 kt | −22 kt | 142 kt | 2 h 11 min | 11:08 am CDT (16:08 UTC) | |
| 7,500 ft | 220° at 19 kt | −19 kt | 15 °C | 139 kt | 2 h 14 min | 11:11 am CDT (16:11 UTC) |
| 9,500 ft | 230° at 17 kt | −17 kt | 11 °C | 137 kt | 2 h 16 min | 11:13 am CDT (16:13 UTC) |
| 11,500 ft | 240° at 14 kt | −13 kt | 9 °C | 133 kt | 2 h 20 min | 11:17 am CDT (16:17 UTC) |
| 13,500 ft | 240° at 15 kt | −14 kt | 4 °C | 134 kt | 2 h 19 min | 11:16 am CDT (16:16 UTC) |
| 15,500 ft | 240° at 18 kt | −17 kt | 0 °C | 137 kt | 2 h 16 min | 11:13 am CDT (16:13 UTC) |
| 17,500 ft | 240° at 21 kt | −19 kt | -6 °C | 139 kt | 2 h 14 min | 11:11 am CDT (16:11 UTC) |
| 18,000 ft FL180 | 240° at 21 kt | −20 kt | -7 °C | 140 kt | 2 h 13 min | 11:10 am CDT (16:10 UTC) |
| 24,000 ft FL240 | 260° at 24 kt | −17 kt | -15 °C | 137 kt | 2 h 16 min | 11:13 am CDT (16:13 UTC) |
| 30,000 ft FL300 | 280° at 38 kt | −18 kt | -29 °C | 138 kt | 2 h 15 min | 11:12 am CDT (16:12 UTC) |
| 34,000 ft FL340 | 290° at 38 kt | −11 kt | -39 °C | 131 kt | 2 h 22 min | 11:19 am CDT (16:19 UTC) |
| 39,000 ft FL390 | 310° at 41 kt | +4 kt | -51 °C | 116 kt | 2 h 40 min | 11:37 am CDT (16:37 UTC) |
Based on data from the 12th at 06:00 UTC; valid on the 12th at 12:00 UTC for use 08:00 to 15:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| CLL | used from 0 nm out; 79 nm from the line | 180/24 | 170/21 19° | 180/10 14° | 230/7 8° | 230/16 -6° | 260/20 -13° | 290/23 -29° | 320/21 -39° | 340/35 -51° |
| DAL | used from 50 nm out; 45 nm from the line | 190/30 | 200/28 18° | 220/18 13° | 250/13 8° | 240/24 -6° | 270/20 -14° | 270/35 -29° | 290/34 -39° | 310/41 -51° |
| FSM | used from 200 nm out; 85 nm from the line | 230/33 | 260/23 15° | 240/23 11° | 230/18 8° | 230/20 -8° | 250/31 -17° | 280/51 -30° | 280/52 -39° | 300/47 -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 |
|---|---|---|---|---|---|---|---|
| GRK Fort Hood (Killeen), TX | departure | no report just now | 1,015 ft | ||||
| ACT Waco, TX | 40 nm out, 9 nm east of the line, tower | no report just now | 516 ft | ||||
| CNW Waco, TX | 50 nm out, 13 nm southeast of the line, tower | no report just now | 470 ft | ||||
| HQZ Mesquite, TX | 120 nm out, 1 nm north of the line, tower | no report just now | 446 ft | ||||
| GVT Greenville, TX | 150 nm out, 8 nm southeast of the line, tower | no report just now | 534 ft | ||||
| HHW Hugo, OK | 210 nm out, 4 nm north of the line | no report just now | 572 ft | ||||
| RKR Poteau, OK | 290 nm out, 3 nm south of the line | no report just now | 450 ft | ||||
| FSM Fort Smith, AR | destination | no report just now | 469 ft |
The highest airport on this list sits at 1,015 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At FSM when you get there the forecast at the estimated arrival, 11:04 am CDT (16:04 UTC)
FSM has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/0543 MCGREGOR, TX 4 nm from the route, 30 nm along the route · security · ZFW
- 6/8646 Arlington, TX, Thursday, October 15, 2026 through Friday, October 16, 2026 UTC 24 nm from the route, 100 nm along the route · drones kept away from a public gathering · starts Thursday 15 October · ZFW
- 9/2934 DALLAS, TX 16 nm from the route, 120 nm along the route · a VIP movement · ZFW
Daylight
Sunset at GRK 7:02 pm CDT (00:02 UTC), at FSM 6:46 pm CDT (23:46 UTC) (civil twilight ends 7:11 pm CDT (00:11 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: Robert Gray Army Airfield, Fort Smith Regional.