Valley International to Robert Gray Army Airfield HRL → GRK
291 nautical miles (335 statute miles) north on a straight line, true course 358°, about 355° magnetic at the departure end (variation 3E). At 120 knots that is 2 h 07 min at the quickest height in today's winds (6,500 ft, a 17-knot tailwind), arriving about 11:02 pm CDT (04:02 UTC), after sunset at the destination. Right now HRL is VFR, wind from the east (100°) at 5 knots; GRK is VFR, wind from the south-southeast (160°) at 4 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: 122 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 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 20:00–03:00 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 4 forecast points nearest it (BRO, CRP, SAT, CLL). 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 | 140° at 19 kt | −15 kt | 135 kt | 2 h 09 min | 11:04 pm CDT (04:04 UTC) | |
| 6,500 ft | 150° at 19 kt | −17 kt | 17 °C | 137 kt | 2 h 07 min | 11:02 pm CDT (04:02 UTC) |
| 8,500 ft | 170° at 17 kt | −17 kt | 14 °C | 137 kt | 2 h 07 min | 11:02 pm CDT (04:02 UTC) |
| 10,500 ft | 180° at 14 kt | −14 kt | 10 °C | 134 kt | 2 h 10 min | 11:05 pm CDT (04:05 UTC) |
| 12,500 ft | 190° at 11 kt | −11 kt | 6 °C | 131 kt | 2 h 13 min | 11:08 pm CDT (04:08 UTC) |
| 14,500 ft | 210° at 10 kt | −8 kt | 3 °C | 128 kt | 2 h 16 min | 11:11 pm CDT (04:11 UTC) |
| 16,500 ft | 230° at 10 kt | −6 kt | -1 °C | 126 kt | 2 h 19 min | 11:14 pm CDT (04:14 UTC) |
| 18,000 ft FL180 | 240° at 11 kt | −5 kt | -4 °C | 125 kt | 2 h 20 min | 11:15 pm CDT (04:15 UTC) |
| 24,000 ft FL240 | 230° at 13 kt | −7 kt | -13 °C | 127 kt | 2 h 17 min | 11:12 pm CDT (04:12 UTC) |
| 30,000 ft FL300 | 280° at 8 kt | +2 kt | -29 °C | 118 kt | 2 h 28 min | 11:23 pm CDT (04:23 UTC) |
| 34,000 ft FL340 | 290° at 7 kt | +3 kt | -40 °C | 117 kt | 2 h 29 min | 11:24 pm CDT (04:24 UTC) |
| 39,000 ft FL390 | 310° at 14 kt | +9 kt | -52 °C | 111 kt | 2 h 37 min | 11:32 pm CDT (04:32 UTC) |
Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 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 | 130/16 | 160/16 17° | 160/14 13° | 150/12 8° | L/V -3° | 250/13 -14° | 130/15 -29° | 100/18 -39° | L/V -50° |
| CRP | used from 48 nm out; 23 nm from the line | 130/19 | 140/20 18° | 160/17 13° | 180/10 7° | 230/9 -3° | 230/11 -13° | 310/6 -29° | 310/5 -39° | 310/13 -52° |
| SAT | used from 145 nm out; 47 nm from the line | 130/22 | 140/24 18° | 170/19 13° | 190/13 7° | 240/15 -4° | 220/14 -13° | 270/11 -28° | 280/10 -40° | 310/18 -51° |
| CLL | used from 242 nm out; 75 nm from the line | 160/18 | 190/18 16° | 200/19 12° | 220/14 7° | 260/18 -5° | 250/20 -13° | 290/29 -29° | 290/31 -40° | 300/22 -53° |
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 | VFR Sky: scattered clouds at 5,000 feet | from the east (100°) at 5 knots | 10+ mi | none | 36 ft | 8:52 pm CDT (01:52 UTC) |
| IKG Kingsville, TX | 78 nm out, 18 nm west of the line | VFR | from the east (090°) at 4 knots | 10+ mi | none | 130 ft | 01:35 UTC |
| CRP Corpus Christi, TX | 97 nm out, 12 nm east of the line, tower | VFR Sky: a few clouds at 2,000 feet, a few clouds at 2,800 feet, a few clouds at 15,000 feet, scattered clouds at 22,000 feet | from the east-southeast (110°) at 12 knots | 10+ mi | none | 46 ft | 01:51 UTC |
| BEA Beeville, TX | 126 nm out, 4 nm northwest of the line | VFR | from the east-southeast (120°) at 8 knots | 10+ mi | none | 272 ft | 23:35 UTC |
| HYI Austin, TX | 223 nm out, 5 nm southwest of the line, tower | VFR | from the south-southeast (150°) at 8 knots | 10+ mi | none | 594 ft | 00:56 UTC |
| GTU Georgetown, TX | 271 nm out, 8 nm southeast of the line, tower | VFR | from the south-southeast (150°) at 7 knots | 10+ mi | none | 789 ft | 00:55 UTC |
| GRK Fort Hood (Killeen), TX | destination | VFR | from the south-southeast (160°) at 4 knots | 10+ mi | none | 1,015 ft | 7:55 pm CDT (00:55 UTC) |
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 GRK when you get there the forecast at the estimated arrival, 11:02 pm CDT (04:02 UTC)
Wind from the south-southeast at 9 knots, scattered clouds at 6,000 feet
The whole forecast for GRK
- 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
The forecast for HRL, the departure
- From Sun 7:00 pm CDT (00:00 UTC): wind from the east at 13 knots, visibility more than 6 miles, a few clouds at 5,000 feet
- From Sun 8:00 pm CDT (01:00 UTC): wind from the southeast at 8 knots, visibility more than 6 miles, a few clouds at 5,000 feet
- From Mon 11:00 am CDT (16:00 UTC): wind from the southeast at 14 knots, gusting to 22, visibility more than 6 miles, scattered clouds at 4,500 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/5849 Austin, TX, Friday, October 2, 2026 through Monday, October 12, 2026 UTC 0 nm from the route, 242 nm along the route · drones kept away from a public gathering · until 12 October · ZHU
Daylight
Sunset at HRL 7:05 pm CDT (00:05 UTC), at GRK 7:03 pm CDT (00:03 UTC) (civil twilight ends 7:27 pm CDT (00:27 UTC)). At 120 knots the arrival at GRK is after sunset there (7:04 pm CDT (00:04 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, Robert Gray Army Airfield.