Greenville Spartanburg International to Brown Field Municipal GSP → SDM
1,733 nautical miles (1,994 statute miles) west on a straight line, true course 275°, about 281° magnetic at the departure end (variation 6W). At 120 knots that is 16 h 50 min at the quickest height in today's winds (6,500 ft, a 17-knot headwind), arriving about 9:27 pm PDT (04:27 UTC), after sunset at the destination. 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 5W: moderate turbulence above 18,000 ft (due to mountain wave) from 29,000 ft to 40,000 ft. Over the first 90 nm of the route.
- AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 6,000 ft. Over the first 90 nm of the route.
- 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). Near the route, at the departure end.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 50 to 129 nm out.
- 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 route from 70 to 219 nm out.
- 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 route from 617 to 906 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the route from 1185 to 1384 nm out.
- AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 1285 to 1723 nm out.
- AIRMET TANGO 1W: 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 route from 1334 to 1374 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1384 to 1484 nm out.
- AIRMET SIERRA 2E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Near the route, at the destination end.
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 GSP.
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 17 forecast points nearest it (GSP, TYS, HSV, MEM, LIT, FSM, TUL, OKC, SPS, GAG, AMA, TCC, ROW, ABQ, PHX, BLH, SAN). 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 | 240° at 19 kt | +18 kt | 22 °C | 102 kt | 16 h 59 min | 9:36 pm PDT (04:36 UTC) |
| 6,500 ft | 240° at 17 kt | +17 kt | 14 °C | 103 kt | 16 h 50 min | 9:27 pm PDT (04:27 UTC) |
| 8,500 ft | 240° at 17 kt | +17 kt | 10 °C | 103 kt | 16 h 50 min | 9:27 pm PDT (04:27 UTC) |
| 10,500 ft | 240° at 18 kt | +17 kt | 7 °C | 103 kt | 16 h 50 min | 9:27 pm PDT (04:27 UTC) |
| 12,500 ft | 240° at 20 kt | +19 kt | 3 °C | 101 kt | 17 h 10 min | 9:47 pm PDT (04:47 UTC) |
| 14,500 ft | 240° at 24 kt | +22 kt | 0 °C | 98 kt | 17 h 41 min | 10:18 pm PDT (05:18 UTC) |
| 16,500 ft | 240° at 28 kt | +26 kt | -4 °C | 94 kt | 18 h 26 min | 11:03 pm PDT (06:03 UTC) |
| 18,000 ft FL180 | 240° at 30 kt | +29 kt | -7 °C | 91 kt | 19 h 03 min | 11:40 pm PDT (06:40 UTC) |
| 24,000 ft FL240 | 240° at 39 kt | +38 kt | -18 °C | 82 kt | 21 h 08 min | 1:45 am PDT (08:45 UTC) |
| 30,000 ft FL300 | 250° at 51 kt | +53 kt | -29 °C | 67 kt | 25 h 52 min | 6:29 am PDT (13:29 UTC) |
| 34,000 ft FL340 | 260° at 52 kt | +55 kt | -38 °C | 65 kt | 26 h 40 min | 7:17 am PDT (14:17 UTC) |
| 39,000 ft FL390 | 260° at 47 kt | +50 kt | -49 °C | 70 kt | 24 h 45 min | 5:22 am PDT (12:22 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| GSP | used from 0 nm out; 25 nm from the line | 340/30 | 360/24 13° | 350/29 10° | 340/33 6° | 340/40 -7° | 350/44 -19° | 340/59 -31° | 350/55 -41° | 300/29 -50° |
| TYS | used from 50 nm out; 50 nm from the line | 330/16 | 350/32 14° | 350/37 9° | 340/30 5° | 330/28 -6° | 340/36 -19° | 330/40 -33° | 330/51 -41° | 330/36 -51° |
| HSV | used from 149 nm out; 58 nm from the line | 300/20 | 310/14 16° | 310/18 10° | 310/15 4° | 320/19 -5° | 290/16 -18° | 320/36 -32° | 320/47 -41° | 330/42 -50° |
| MEM | used from 299 nm out; 59 nm from the line | 250/19 | 260/19 17° | 270/20 12° | 270/16 6° | 270/21 -6° | 290/27 -17° | 300/37 -30° | 300/49 -40° | 310/40 -51° |
| LIT | used from 448 nm out; 37 nm from the line | 250/22 | 250/25 18° | 240/23 12° | 240/20 7° | 250/17 -6° | 260/25 -17° | 300/45 -29° | 300/49 -40° | 310/43 -51° |
| FSM | used from 548 nm out; 25 nm from the line | 230/33 | 260/23 15° | 240/23 11° | 230/18 8° | 230/20 -8° | 250/31 -17° | 280/51 -30° | 280/52 -39° | 300/47 -51° |
| TUL | used from 647 nm out; 61 nm from the line | 230/42 | 250/23 17° | 220/16 14° | 240/10 8° | 240/20 -6° | 260/28 -17° | 270/61 -29° | 280/52 -38° | 290/46 -50° |
| OKC | used from 697 nm out; 37 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° |
| SPS | used from 797 nm out; 67 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° |
| GAG | used from 846 nm out; 80 nm from the line | 240/35 22° | 240/27 14° | 230/25 6° | 240/38 -7° | 230/44 -19° | 250/73 -28° | 270/66 -37° | 270/58 -49° | |
| AMA | used from 896 nm out; 42 nm from the line | 230/32 | 230/28 14° | 230/27 7° | 230/38 -6° | 230/50 -17° | 250/69 -28° | 260/62 -37° | 270/65 -49° | |
| TCC | used from 996 nm out; 42 nm from the line | 240/20 | 230/22 13° | 230/27 6° | 230/40 -7° | 240/55 -18° | 240/74 -27° | 240/68 -37° | 250/64 -49° | |
| ROW | used from 1095 nm out; 77 nm from the line | 230/12 | 230/17 13° | 220/30 7° | 230/41 -5° | 240/52 -17° | 230/66 -28° | 240/63 -38° | 240/60 -50° | |
| ABQ | used from 1145 nm out; 50 nm from the line | 220/19 9° | 220/35 3° | 230/50 -8° | 240/64 -19° | 230/83 -26° | 230/85 -36° | 230/80 -48° | ||
| PHX | used from 1344 nm out; 108 nm from the line | 190/15 | 210/25 12° | 200/34 4° | 200/34 2° | 220/58 -9° | 220/75 -19° | 220/91 -28° | 220/100 -35° | 220/95 -47° |
| BLH | used from 1543 nm out; 52 nm from the line | 240/19 | 210/20 10° | 200/27 4° | 210/34 -2° | 220/59 -10° | 220/67 -20° | 220/75 -29° | 230/78 -38° | 220/90 -47° |
| SAN | used from 1693 nm out; 30 nm from the line | 240/10 | 220/19 6° | 230/26 2° | 230/29 -3° | 230/43 -11° | 220/61 -20° | 220/72 -29° | 220/75 -38° | 220/71 -48° |
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 |
|---|---|---|---|---|---|---|---|
| GSP Greer, SC | departure | no report just now | 963 ft | ||||
| CHA Chattanooga, TN | 149 nm out, 4 nm southeast of the line, tower | no report just now | 682 ft | ||||
| MKL Jackson, TN | 329 nm out, 22 nm north of the line, tower | no report just now | 434 ft | ||||
| NQA Millington, TN | 378 nm out, 7 nm north of the line, tower | no report just now | 322 ft | ||||
| FSM Fort Smith, AR | 597 nm out, 7 nm north of the line, tower | no report just now | 469 ft | ||||
| OUN Norman, OK | 747 nm out, 8 nm north of the line, tower | no report just now | 1,181 ft | ||||
| AMA Amarillo, TX | 956 nm out, 23 nm north of the line, tower | no report just now | 3,606 ft | ||||
| FSU Fort Sumner, NM | 1085 nm out, 7 nm south of the line | no report just now | 4,164 ft | ||||
| JTC Springerville, AZ | 1334 nm out, 10 nm northwest of the line | no report just now | 7,055 ft | ||||
| GYR Goodyear, AZ | 1494 nm out, 3 nm south of the line, tower | no report just now | 969 ft | ||||
| NYL Yuma, AZ | 1613 nm out, 24 nm south of the line, tower | no report just now | 213 ft | ||||
| SDM San Diego, CA | destination | no report just now | 526 ft |
The highest airport on this list sits at 7,055 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At SDM when you get there the forecast at the estimated arrival, 9:27 pm PDT (04:27 UTC)
SDM has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/8722 ALAMOGORDO, NM, Tuesday, October 13, 2026 Local 12 nm from the route, 1175 nm along the route · security · starts tomorrow · ZAB
- 6/2656 Coyote Wells, CA, Saturday, July 4, 2026 through Saturday, January 2, 2027 Local 14 nm from the route, 1643 nm along the route · security · until 2 January · ZLA
- 6/2657 Calexico, CA, Saturday, July 4, 2026 through Saturday, January 2, 2027 Local 14 nm from the route, 1643 nm along the route · security · until 2 January · ZLA
- 6/4812 El Centro, CA, Wednesday, July 15, 2026 through Tuesday, July 13, 2027 Local 12 nm from the route, 1663 nm along the route · security · until 13 July · ZLA
- 6/2652 Coyote Wells, CA, Saturday, July 4, 2026 through Saturday, January 2, 2027 Local 9 nm from the route, at the destination end · security · until 2 January · ZLA
Daylight
Sunset at GSP 6:58 pm EDT (22:58 UTC), at SDM 6:17 pm PDT (01:17 UTC) (civil twilight ends 6:42 pm PDT (01:42 UTC)). At 120 knots the arrival at SDM is after sunset there (6:18 pm PDT (01:18 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: Greenville Spartanburg International, Brown Field Municipal.