Louisville Muhammad Ali International to San Antonio International SDF → SAT
818 nautical miles (942 statute miles) southwest on a straight line, true course 234°, about 239° magnetic at the departure end (variation 5W). At 120 knots that is 7 h 11 min at the quickest height in today's winds (39,000 ft, a 6-knot headwind), arriving about 9:15 am CDT (14:15 UTC). Right now SDF is marginal VFR, wind calm; SAT is VFR, wind from the east-southeast (120°) at 7 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: 1,806 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). Over the first 100 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 SDF.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
No pilot reports within 50 nautical miles of the line in the last three hours.
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 8 forecast points nearest it (LOU, EVV, CGI, MEM, LIT, 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 | 220° at 14 kt | +14 kt | 106 kt | 7 h 43 min | 9:47 am CDT (14:47 UTC) | |
| 6,500 ft | 230° at 13 kt | +14 kt | 16 °C | 106 kt | 7 h 43 min | 9:47 am CDT (14:47 UTC) |
| 8,500 ft | 250° at 14 kt | +14 kt | 13 °C | 106 kt | 7 h 43 min | 9:47 am CDT (14:47 UTC) |
| 10,500 ft | 260° at 12 kt | +11 kt | 10 °C | 109 kt | 7 h 30 min | 9:34 am CDT (14:34 UTC) |
| 12,500 ft | 270° at 11 kt | +8 kt | 6 °C | 112 kt | 7 h 18 min | 9:22 am CDT (14:22 UTC) |
| 14,500 ft | 280° at 12 kt | +9 kt | 2 °C | 111 kt | 7 h 22 min | 9:26 am CDT (14:26 UTC) |
| 16,500 ft | 280° at 13 kt | +9 kt | -2 °C | 111 kt | 7 h 22 min | 9:26 am CDT (14:26 UTC) |
| 18,000 ft FL180 | 280° at 14 kt | +9 kt | -5 °C | 111 kt | 7 h 22 min | 9:26 am CDT (14:26 UTC) |
| 24,000 ft FL240 | 290° at 18 kt | +10 kt | -16 °C | 110 kt | 7 h 26 min | 9:30 am CDT (14:30 UTC) |
| 30,000 ft FL300 | 300° at 31 kt | +10 kt | -31 °C | 110 kt | 7 h 26 min | 9:30 am CDT (14:30 UTC) |
| 34,000 ft FL340 | 300° at 36 kt | +11 kt | -40 °C | 109 kt | 7 h 30 min | 9:34 am CDT (14:34 UTC) |
| 39,000 ft FL390 | 310° at 38 kt | +6 kt | -51 °C | 114 kt | 7 h 11 min | 9:15 am CDT (14:15 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| LOU | used from 0 nm out; 30 nm from the line | 310/18 | 340/28 16° | 340/29 10° | 350/27 3° | 330/27 -7° | 340/39 -19° | 330/58 -33° | 330/67 -41° | 330/40 -49° |
| EVV | used from 50 nm out; 44 nm from the line | 280/15 | 290/12 17° | 310/16 10° | 320/13 5° | 310/22 -6° | 320/26 -18° | 320/38 -33° | 310/56 -41° | 320/55 -51° |
| CGI | used from 150 nm out; 64 nm from the line | 240/20 | 270/15 15° | 280/15 11° | 300/13 6° | 290/20 -6° | 280/24 -18° | 300/34 -32° | 300/47 -41° | 310/49 -51° |
| MEM | used from 200 nm out; 59 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° |
| LIT | used from 349 nm out; 27 nm from the line | 220/21 | 230/17 16° | 250/24 12° | 260/15 7° | 260/13 -5° | 280/25 -16° | 290/35 -30° | 300/42 -40° | 300/40 -52° |
| SHV | used from 449 nm out; 57 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 599 nm out; 76 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 749 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 |
|---|---|---|---|---|---|---|---|
| SDF Louisville, KY | departure | marginal VFR Weather: mist | calm | 5 mi | none | 500 ft | 2:56 am EDT (06:56 UTC) |
| OWB Owensboro, KY | 70 nm out, 19 nm northwest of the line, tower | VFR | calm | 10+ mi | none | 407 ft | 06:56 UTC |
| CEY Murray, KY | 160 nm out, 5 nm northeast of the line | VFR | from the south (190°) at 4 knots | 10+ mi | none | 577 ft | 06:55 UTC |
| DYR Dyersburg, TN | 220 nm out, 1 nm northeast of the line | VFR Sky: a few clouds at 5,500 feet, scattered clouds at 7,000 feet | from the south (190°) at 10 knots, gusting to 16 | 10+ mi | none | 337 ft | 18:56 UTC |
| NQA Millington, TN | 260 nm out, 16 nm southeast of the line, tower | VFR | calm | 10+ mi | none | 322 ft | 23:50 UTC |
| SGT Stuttgart, AR | 359 nm out, 5 nm northeast of the line | VFR | from the south-southwest (210°) at 6 knots | 10+ mi | none | 224 ft | 06:56 UTC |
| TXK Texarkana, AR | 489 nm out, 24 nm northwest of the line, tower | VFR | from the south-southwest (210°) at 8 knots | 10+ mi | none | 389 ft | 06:53 UTC |
| GGG Longview, TX | 559 nm out, 2 nm south of the line, tower | VFR | from the south (190°) at 7 knots | 10+ mi | none | 365 ft | 06:53 UTC |
| TYR Tyler, TX | 589 nm out, 21 nm northwest of the line, tower | VFR | from the south (190°) at 9 knots | 10+ mi | none | 543 ft | 06:53 UTC |
| RCK Rockdale, TX | 719 nm out, 3 nm southeast of the line | no report just now | 474 ft | ||||
| AUS Austin, TX | 759 nm out, 3 nm west of the line, tower | VFR Sky: a few clouds at 12,000 feet | from the south (180°) at 3 knots | 10+ mi | none | 541 ft | 06:53 UTC |
| SAT San Antonio, TX | destination | VFR Sky: a few clouds at 2,300 feet, a broken layer at 25,000 feet | from the east-southeast (120°) at 7 knots | 10+ mi | 25,000 ft | 809 ft | 1:51 am CDT (06:51 UTC) |
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, 9:15 am CDT (14:15 UTC)
Wind from the southeast at 6 knots, visibility more than 6 miles, overcast at 1,500 feet marginal VFR
The whole forecast for SAT
- From Mon 1:00 am CDT (06:00 UTC): wind from the southeast at 8 knots, visibility more than 6 miles, a few clouds at 1,500 feet, a few clouds at 25,000 feet
- From Mon 5:00 am CDT (10:00 UTC): wind from the southeast at 6 knots, visibility more than 6 miles, overcast at 1,500 feet
- From Mon 12:00 pm CDT (17:00 UTC): wind from the south-southeast at 12 knots, visibility more than 6 miles, showers nearby, a broken layer at 3,500 feet
- From Tue 2:00 am CDT (07:00 UTC): wind from the south-southeast at 9 knots, visibility more than 6 miles, overcast at 1,500 feet
- At times between Tue 4:00 am CDT (09:00 UTC) and 7:00 am CDT (12:00 UTC): a broken layer at 800 feet
The forecast for SDF, the departure
- From Mon 2:00 am EDT (06:00 UTC): wind from the south at 3 knots, visibility more than 6 miles, clear skies
- At times between Mon 5:00 am EDT (09:00 UTC) and 9:00 am EDT (13:00 UTC): visibility ½ mile, fog, clear skies
- From Mon 10:00 am EDT (14:00 UTC): wind from the south-southwest at 6 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
- From Mon 8:00 pm EDT (00:00 UTC): wind from the south at 3 knots, visibility more than 6 miles, clear skies
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 SDF 7:09 pm EDT (23:09 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: Louisville Muhammad Ali International, San Antonio International.