Valley International to Stillwater Regional HRL → SWO
597 nautical miles (687 statute miles) north on a straight line, true course 003°, about 360° magnetic at the departure end (variation 3E). At 120 knots that is 4 h 10 min at the quickest height in today's winds (4,500 ft, a 23-knot tailwind), arriving about 10:43 am CDT (15:43 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 2W: 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 90 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 HRL.
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 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 7 forecast points nearest it (BRO, CRP, SAT, CLL, DAL, SPS, OKC). 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 | 190° at 23 kt | −23 kt | 143 kt | 4 h 10 min | 10:43 am CDT (15:43 UTC) | |
| 6,500 ft | 200° at 21 kt | −20 kt | 17 °C | 140 kt | 4 h 16 min | 10:49 am CDT (15:49 UTC) |
| 8,500 ft | 210° at 15 kt | −13 kt | 15 °C | 133 kt | 4 h 29 min | 11:02 am CDT (16:02 UTC) |
| 10,500 ft | 220° at 11 kt | −9 kt | 11 °C | 129 kt | 4 h 38 min | 11:11 am CDT (16:11 UTC) |
| 12,500 ft | 230° at 10 kt | −6 kt | 7 °C | 126 kt | 4 h 44 min | 11:17 am CDT (16:17 UTC) |
| 14,500 ft | 240° at 12 kt | −7 kt | 3 °C | 127 kt | 4 h 42 min | 11:15 am CDT (16:15 UTC) |
| 16,500 ft | 240° at 14 kt | −8 kt | -2 °C | 128 kt | 4 h 40 min | 11:13 am CDT (16:13 UTC) |
| 18,000 ft FL180 | 240° at 16 kt | −9 kt | -5 °C | 129 kt | 4 h 38 min | 11:11 am CDT (16:11 UTC) |
| 24,000 ft FL240 | 250° at 16 kt | −7 kt | -14 °C | 127 kt | 4 h 42 min | 11:15 am CDT (16:15 UTC) |
| 30,000 ft FL300 | 260° at 25 kt | −4 kt | -29 °C | 124 kt | 4 h 49 min | 11:22 am CDT (16:22 UTC) |
| 34,000 ft FL340 | 290° at 22 kt | +6 kt | -39 °C | 114 kt | 5 h 14 min | 11:47 am CDT (16:47 UTC) |
| 39,000 ft FL390 | 330° at 28 kt | +23 kt | -51 °C | 97 kt | 6 h 09 min | 12:42 pm CDT (17:42 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| BRO | used from 0 nm out; 45 nm from the line | 160/15 | 160/15 18° | 170/11 14° | 150/7 9° | L/V -4° | 170/6 -15° | 100/15 -29° | 100/14 -41° | 040/26 -51° |
| CRP | used from 50 nm out; 19 nm from the line | 140/21 | 160/22 17° | 180/14 13° | 210/6 9° | 270/10 -5° | 200/8 -13° | L/V -29° | L/V -40° | 030/28 -51° |
| SAT | used from 149 nm out; 56 nm from the line | 160/18 | 180/22 17° | 190/16 14° | 210/16 9° | 220/16 -5° | 200/11 -14° | 250/8 -29° | 330/8 -40° | 020/26 -51° |
| CLL | used from 249 nm out; 55 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 299 nm out; 79 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° |
| SPS | used from 448 nm out; 64 nm from the line | 220/35 | 220/31 18° | 230/16 14° | 230/10 8° | 250/18 -5° | 250/32 -16° | 260/51 -28° | 280/46 -38° | 300/50 -50° |
| OKC | used from 498 nm out; 36 nm from the line | 220/43 | 230/31 17° | 260/13 16° | 270/11 7° | 240/20 -6° | 250/32 -17° | 260/60 -28° | 280/50 -37° | 290/45 -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 |
|---|---|---|---|---|---|---|---|
| HRL Harlingen, TX | departure | no report just now | 36 ft | ||||
| CRP Corpus Christi, TX | 90 nm out, 5 nm northeast of the line, tower | no report just now | 46 ft | ||||
| RFG Refugio, TX | 129 nm out, 12 nm southeast of the line | no report just now | 54 ft | ||||
| HYI Austin, TX | 219 nm out, 21 nm west of the line, tower | no report just now | 594 ft | ||||
| EDC Austin, TX | 249 nm out, 7 nm west of the line, tower | no report just now | 620 ft | ||||
| ACT Waco, TX | 328 nm out, 8 nm southeast of the line, tower | no report just now | 516 ft | ||||
| FWS Fort Worth, TX | 378 nm out, 3 nm north of the line, tower | no report just now | 700 ft | ||||
| GLE Gainesville, TX | 448 nm out, 3 nm southeast of the line | no report just now | 845 ft | ||||
| ADM Ardmore, OK | 488 nm out, 9 nm east of the line, tower | no report just now | 776 ft | ||||
| OKC Oklahoma City, OK | 547 nm out, 23 nm west of the line, tower | no report just now | 1,295 ft | ||||
| SWO Stillwater, OK | destination | no report just now | 1,000 ft |
The highest airport on this list sits at 1,295 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At SWO when you get there the forecast at the estimated arrival, 10:43 am CDT (15:43 UTC)
SWO 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 3 nm from the route, 309 nm along the route · security · ZFW
- 6/8646 Arlington, TX, Thursday, October 15, 2026 through Friday, October 16, 2026 UTC 10 nm from the route, 388 nm along the route · drones kept away from a public gathering · starts Thursday 15 October · ZFW
- 9/2934 DALLAS, TX 23 nm from the route, 398 nm along the route · a VIP movement · ZFW
Daylight
Sunset at HRL 7:04 pm CDT (00:04 UTC), at SWO 6:56 pm CDT (23:56 UTC) (civil twilight ends 7:22 pm CDT (00:22 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: Valley International, Stillwater Regional.