Huntsville Intl-Carl T Jones Field to San Antonio International HSV → SAT
669 nautical miles (769 statute miles) southwest on a straight line, true course 246°, about 250° magnetic at the departure end (variation 4W). At 120 knots that is 5 h 55 min at the quickest height in today's winds (39,000 ft, a 7-knot headwind), arriving about 8:38 am CDT (13:38 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: 2 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 SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist), from 1:00 am CDT (06:00 UTC). Over the first 0 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 HSV.
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 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 6 forecast points nearest it (HSV, MEM, JAN, SHV, CLL, SAT). 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 | 210° at 12 kt | +11 kt | 109 kt | 6 h 08 min | 8:51 am CDT (13:51 UTC) | |
| 6,500 ft | 230° at 12 kt | +12 kt | 17 °C | 108 kt | 6 h 12 min | 8:55 am CDT (13:55 UTC) |
| 8,500 ft | 240° at 13 kt | +13 kt | 13 °C | 107 kt | 6 h 15 min | 8:58 am CDT (13:58 UTC) |
| 10,500 ft | 260° at 11 kt | +11 kt | 10 °C | 109 kt | 6 h 08 min | 8:51 am CDT (13:51 UTC) |
| 12,500 ft | 280° at 10 kt | +9 kt | 6 °C | 111 kt | 6 h 02 min | 8:45 am CDT (13:45 UTC) |
| 14,500 ft | 280° at 11 kt | +10 kt | 2 °C | 110 kt | 6 h 05 min | 8:48 am CDT (13:48 UTC) |
| 16,500 ft | 280° at 12 kt | +10 kt | -2 °C | 110 kt | 6 h 05 min | 8:48 am CDT (13:48 UTC) |
| 18,000 ft FL180 | 280° at 13 kt | +11 kt | -5 °C | 109 kt | 6 h 08 min | 8:51 am CDT (13:51 UTC) |
| 24,000 ft FL240 | 290° at 15 kt | +10 kt | -15 °C | 110 kt | 6 h 05 min | 8:48 am CDT (13:48 UTC) |
| 30,000 ft FL300 | 300° at 31 kt | +15 kt | -30 °C | 105 kt | 6 h 22 min | 9:05 am CDT (14:05 UTC) |
| 34,000 ft FL340 | 310° at 32 kt | +12 kt | -40 °C | 108 kt | 6 h 12 min | 8:55 am CDT (13:55 UTC) |
| 39,000 ft FL390 | 320° at 34 kt | +7 kt | -51 °C | 113 kt | 5 h 55 min | 8:38 am CDT (13:38 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| HSV | used from 0 nm out; 25 nm from the line | 310/20 | 330/20 16° | 320/27 11° | 340/23 5° | 320/23 -7° | 340/30 -17° | 320/50 -33° | 330/61 -41° | 340/41 -50° |
| MEM | used from 100 nm out; 89 nm from the line | 230/19 | 260/16 15° | 270/17 12° | 300/13 6° | 300/15 -5° | 300/26 -18° | 300/34 -32° | 300/41 -40° | 310/46 -52° |
| JAN | used from 150 nm out; 66 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° |
| SHV | used from 299 nm out; 62 nm from the line | 200/18 | 230/24 18° | 230/24 12° | 240/14 8° | 260/12 -4° | 240/11 -15° | 300/31 -29° | 300/32 -40° | 300/36 -52° |
| CLL | used from 449 nm out; 68 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° |
| SAT | used from 599 nm out; 45 nm from the line | 150/26 | 180/18 19° | 180/18 14° | 200/14 9° | 230/16 -6° | 210/9 -13° | 270/8 -29° | 280/6 -39° | 340/19 -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 |
|---|---|---|---|---|---|---|---|
| HSV Huntsville, AL | departure | no report just now | 628 ft | ||||
| MSL Muscle Shoals, AL | 30 nm out, 23 nm northwest of the line | no report just now | 550 ft | ||||
| TUP Tupelo, MS | 100 nm out, 21 nm northwest of the line, tower | no report just now | 346 ft | ||||
| GWO Greenwood, MS | 180 nm out, 7 nm north of the line, tower | no report just now | 162 ft | ||||
| IDL Indianola, MS | 210 nm out, 20 nm north of the line | no report just now | 126 ft | ||||
| MLU Monroe, LA | 289 nm out, 4 nm southwest of the line, tower | no report just now | 78 ft | ||||
| IER Natchitoches, LA | 359 nm out, 19 nm south of the line | no report just now | 121 ft | ||||
| LFK Lufkin, TX | 449 nm out, 6 nm south of the line | no report just now | 295 ft | ||||
| UTS Huntsville, TX | 499 nm out, 11 nm south of the line | no report just now | 362 ft | ||||
| CLL College Station, TX | 539 nm out, 3 nm west of the line, tower | no report just now | 320 ft | ||||
| HYI Austin, TX | 629 nm out, 3 nm northwest of the line, tower | no report just now | 594 ft | ||||
| SAT San Antonio, TX | destination | no report just now | 809 ft |
The highest airport on this list sits at 809 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At SAT when you get there the forecast at the estimated arrival, 8:38 am CDT (13:38 UTC)
SAT has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
No temporary flight restriction on or near this route right now.
Daylight
Sunset at HSV 6:16 pm CDT (23:16 UTC), at SAT 7:05 pm CDT (00:05 UTC) (civil twilight ends 7:29 pm CDT (00:29 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: Huntsville Intl-Carl T Jones Field, San Antonio International.