Robert Gray Army Airfield to Tulsa International GRK → TUL
323 nautical miles (372 statute miles) north on a straight line, true course 017°, about 013° magnetic at the departure end (variation 4E). At 120 knots that is 2 h 09 min at the quickest height in today's winds (3,500 ft, a 30-knot tailwind), arriving about 4:16 am CDT (09:16 UTC), after sunset at the destination. Right now GRK is VFR, wind from the south-southeast (150°) at 8 knots; TUL is VFR, wind from the south (170°) at 13 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 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 last 69 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 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 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 4 forecast points nearest it (CLL, DAL, OKC, TUL). 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 | 200° at 30 kt | −30 kt | 150 kt | 2 h 09 min | 4:16 am CDT (09:16 UTC) | |
| 5,500 ft | 220° at 25 kt | −24 kt | 144 kt | 2 h 15 min | 4:22 am CDT (09:22 UTC) | |
| 7,500 ft | 220° at 19 kt | −17 kt | 16 °C | 137 kt | 2 h 21 min | 4:28 am CDT (09:28 UTC) |
| 9,500 ft | 230° at 14 kt | −12 kt | 13 °C | 132 kt | 2 h 27 min | 4:34 am CDT (09:34 UTC) |
| 11,500 ft | 250° at 14 kt | −9 kt | 9 °C | 129 kt | 2 h 30 min | 4:37 am CDT (09:37 UTC) |
| 13,500 ft | 250° at 15 kt | −10 kt | 5 °C | 130 kt | 2 h 29 min | 4:36 am CDT (09:36 UTC) |
| 15,500 ft | 240° at 17 kt | −12 kt | 0 °C | 132 kt | 2 h 27 min | 4:34 am CDT (09:34 UTC) |
| 17,500 ft | 240° at 18 kt | −14 kt | -4 °C | 134 kt | 2 h 25 min | 4:32 am CDT (09:32 UTC) |
| 18,000 ft FL180 | 240° at 19 kt | −15 kt | -5 °C | 135 kt | 2 h 24 min | 4:31 am CDT (09:31 UTC) |
| 24,000 ft FL240 | 250° at 22 kt | −14 kt | -15 °C | 134 kt | 2 h 25 min | 4:32 am CDT (09:32 UTC) |
| 30,000 ft FL300 | 270° at 37 kt | −11 kt | -29 °C | 131 kt | 2 h 28 min | 4:35 am CDT (09:35 UTC) |
| 34,000 ft FL340 | 280° at 37 kt | −7 kt | -39 °C | 127 kt | 2 h 33 min | 4:40 am CDT (09:40 UTC) |
| 39,000 ft FL390 | 290° at 37 kt | +3 kt | -51 °C | 117 kt | 2 h 46 min | 4:53 am CDT (09:53 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| CLL | used from 0 nm out; 86 nm from the line | 170/22 | 170/26 18° | 200/15 14° | 240/13 8° | 240/15 -5° | 260/17 -13° | 290/27 -29° | 290/22 -40° | 320/30 -51° |
| DAL | used from 49 nm out; 46 nm from the line | 190/29 | 220/23 17° | 220/17 13° | 250/18 8° | 230/18 -5° | 240/18 -15° | 270/34 -29° | 280/33 -39° | 300/36 -51° |
| OKC | used from 196 nm out; 72 nm from the line | 200/44 | 230/32 18° | 240/13 15° | 240/10 9° | 240/20 -5° | 250/27 -16° | 260/47 -28° | 270/48 -39° | 270/45 -50° |
| TUL | used from 245 nm out; 54 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° |
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 | VFR Sky: a few clouds at 1,700 feet, scattered clouds at 18,000 feet | from the south-southeast (150°) at 8 knots | 9 mi | none | 1,015 ft | 1:55 am CDT (06:55 UTC) |
| ACT Waco, TX | 39 nm out, 20 nm east of the line, tower | VFR | from the south (180°) at 12 knots | 10+ mi | none | 516 ft | 06:51 UTC |
| CPT Cleburne, TX | 78 nm out, 4 nm northwest of the line | VFR | from the south-southeast (160°) at 8 knots | 10+ mi | none | 854 ft | 06:55 UTC |
| FWS Fort Worth, TX | 98 nm out, 4 nm southwest of the line, tower | VFR | from the south (180°) at 9 knots | 10+ mi | none | 700 ft | 06:15 UTC |
| DTO Denton, TX | 127 nm out, 9 nm northwest of the line, tower | VFR | from the south (180°) at 14 knots | 10+ mi | none | 642 ft | 06:53 UTC |
| GYI Sherman/Denison, TX | 166 nm out, 9 nm east of the line, tower | VFR | from the south-southeast (160°) at 8 knots | 10+ mi | none | 749 ft | 06:55 UTC |
| ADH Ada, OK | 235 nm out, 11 nm west of the line | VFR | from the south-southeast (160°) at 9 knots | 10+ mi | none | 1,015 ft | 06:55 UTC |
| SRE Seminole, OK | 254 nm out, 20 nm northwest of the line | VFR | variable at 5 knots, gusting to 14 | 10+ mi | none | 1,023 ft | 06:55 UTC |
| OKM Okmulgee, OK | 294 nm out, 7 nm southeast of the line | VFR | from the south (180°) at 6 knots | 10+ mi | none | 719 ft | 06:55 UTC |
| TUL Tulsa, OK | destination | VFR | from the south (170°) at 13 knots | 10+ mi | none | 677 ft | 1:53 am CDT (06:53 UTC) |
The highest airport on this list sits at 1,023 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At TUL when you get there the forecast at the estimated arrival, 4:16 am CDT (09:16 UTC)
Wind from the south at 13 knots, visibility more than 6 miles, low-level wind shear, clear skies VFR
The whole forecast for TUL
- From Mon 1:00 am CDT (06:00 UTC): wind from the south at 13 knots, visibility more than 6 miles, low-level wind shear, clear skies
- From Mon 10:00 am CDT (15:00 UTC): wind from the south at 17 knots, gusting to 27, visibility more than 6 miles, a few clouds at 25,000 feet
- From Mon 7:00 pm CDT (00:00 UTC): wind from the south at 12 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
The forecast for GRK, the departure
- From Sun 7:00 pm CDT (00:00 UTC): wind from the south-southeast at 9 knots, scattered clouds at 6,000 feet
- Changing between Mon 3:00 am CDT (08:00 UTC) and 4:00 am CDT (09:00 UTC) to: wind from the southeast at 6 knots, a broken layer at 1,500 feet
- Changing between Mon 4:00 pm CDT (21:00 UTC) and 5:00 pm CDT (22:00 UTC) to: wind from the south-southeast at 12 knots, a broken layer at 5,000 feet
- Changing between Mon 10:00 pm CDT (03:00 UTC) and 11:00 pm CDT (04:00 UTC) to: wind from the south-southeast at 9 knots, a broken layer at 1,500 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/0543 MCGREGOR, TX 12 nm from the route, 29 nm along the route · security · ZFW
- 6/8646 Arlington, TX, Thursday, October 15, 2026 through Friday, October 16, 2026 UTC 5 nm from the route, 108 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, 117 nm along the route · a VIP movement · ZFW
Daylight
Sunset at GRK 7:02 pm CDT (00:02 UTC), at TUL 6:51 pm CDT (23:51 UTC) (civil twilight ends 7:17 pm CDT (00:17 UTC)). At 120 knots the arrival at TUL is before sunrise there (7:27 am CDT (12:27 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, Tulsa International.