Luis Munoz Marin International to Huntsville Intl-Carl T Jones Field SJU → HSV
1,474 nautical miles (1,697 statute miles) northwest on a straight line, true course 315°, about 326° magnetic at the departure end (variation 11W). At 120 knots that is 11 h 05 min at the quickest height in today's winds (39,000 ft, a 13-knot tailwind), arriving about 6:33 am CDT (11:33 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: 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
- SIGMET E18E: thunderstorms (a convective SIGMET) up to 45,000 ft, moving from the southwest at 15 knots, until 9:55 pm AST (01:55 UTC). Over the route from 897 to 976 nm out.
as issued
WSUS31 KKCI 112355 MKCE WST 112355 CONVECTIVE SIGMET 18E VALID UNTIL 0155Z FL AND FL GA CSTL WTRS FROM 180SSE ILM-150ENE TRV-60NE PBI-20S TRV-140SE CHS-180SSE ILM AREA TS MOV FROM 23015KT. TOPS ABV FL450.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Near the route, 1345 nm along the route.
- AIRMET TANGO 6W: moderate turbulence above 18,000 ft from 28,000 ft to 40,000 ft. Over the last 50 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 SJU.
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 8 forecast points nearest it (MIA, MLB, JAX, SAV, CSG, ATL, BHM, HSV). 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 | 280° at 7 kt | +6 kt | 114 kt | 12 h 56 min | 8:24 am CDT (13:24 UTC) | |
| 6,500 ft | 300° at 9 kt | +9 kt | 16 °C | 111 kt | 13 h 17 min | 8:45 am CDT (13:45 UTC) |
| 8,500 ft | 280° at 10 kt | +8 kt | 14 °C | 112 kt | 13 h 10 min | 8:38 am CDT (13:38 UTC) |
| 10,500 ft | 280° at 11 kt | +9 kt | 11 °C | 111 kt | 13 h 17 min | 8:45 am CDT (13:45 UTC) |
| 12,500 ft | 280° at 11 kt | +10 kt | 7 °C | 110 kt | 13 h 24 min | 8:52 am CDT (13:52 UTC) |
| 14,500 ft | 260° at 12 kt | +8 kt | 3 °C | 112 kt | 13 h 10 min | 8:38 am CDT (13:38 UTC) |
| 16,500 ft | 250° at 14 kt | +6 kt | -2 °C | 114 kt | 12 h 56 min | 8:24 am CDT (13:24 UTC) |
| 18,000 ft FL180 | 240° at 17 kt | +5 kt | -5 °C | 115 kt | 12 h 49 min | 8:17 am CDT (13:17 UTC) |
| 24,000 ft FL240 | 220° at 14 kt | +1 kt | -16 °C | 119 kt | 12 h 23 min | 7:51 am CDT (12:51 UTC) |
| 30,000 ft FL300 | 210° at 16 kt | −2 kt | -31 °C | 122 kt | 12 h 05 min | 7:33 am CDT (12:33 UTC) |
| 34,000 ft FL340 | 190° at 24 kt | −12 kt | -40 °C | 132 kt | 11 h 10 min | 6:38 am CDT (11:38 UTC) |
| 39,000 ft FL390 | 180° at 22 kt | −13 kt | -52 °C | 133 kt | 11 h 05 min | 6:33 am CDT (11:33 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| MIA | used from 0 nm out; 884 nm from the line | 190/8 | L/V 18° | 180/5 14° | L/V 9° | 190/10 -5° | 160/10 -16° | 150/13 -30° | 160/26 -40° | 150/23 -52° |
| MLB | used from 797 nm out; 203 nm from the line | 240/7 | 240/11 17° | 240/13 13° | 250/15 8° | 230/25 -5° | 210/25 -16° | 210/24 -31° | 190/29 -41° | 190/27 -53° |
| JAX | used from 996 nm out; 106 nm from the line | 280/14 | 300/22 16° | 260/27 15° | 260/26 9° | 240/41 -6° | 230/38 -16° | 220/44 -32° | 200/49 -41° | 200/52 -53° |
| SAV | used from 1146 nm out; 51 nm from the line | 260/18 | 290/26 13° | 270/33 12° | 260/40 9° | 240/47 -5° | 230/53 -16° | 220/61 -31° | 210/64 -41° | 210/64 -52° |
| CSG | used from 1245 nm out; 73 nm from the line | 300/20 | 330/41 15° | 320/42 11° | 320/41 7° | 300/33 -6° | 290/33 -18° | 270/32 -34° | 260/31 -41° | 260/24 -51° |
| ATL | used from 1295 nm out; 33 nm from the line | 300/23 | 320/26 14° | 320/34 10° | 320/41 5° | 290/32 -6° | 290/31 -18° | 280/28 -33° | 260/32 -41° | 250/28 -50° |
| BHM | used from 1395 nm out; 54 nm from the line | 300/16 | 330/32 16° | 320/37 11° | 330/37 6° | 310/33 -7° | 310/30 -18° | 320/40 -34° | 330/43 -41° | 330/30 -49° |
| HSV | used from 1444 nm out; 15 nm from the line | 290/15 | 330/34 16° | 330/38 11° | 330/40 5° | 320/36 -7° | 320/31 -18° | 320/44 -34° | 330/53 -41° | 330/34 -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 |
|---|---|---|---|---|---|---|---|
| SJU San Juan, PR | departure | no report just now | 9 ft | ||||
| JES Jesup, GA | 1165 nm out, 2 nm north of the line | no report just now | 107 ft | ||||
| MCN Macon, GA | 1275 nm out, 4 nm northwest of the line, tower | no report just now | 354 ft | ||||
| ATL Atlanta, GA | 1345 nm out, 21 nm northeast of the line, tower | no report just now | 1,026 ft | ||||
| HSV Huntsville, AL | destination | no report just now | 628 ft |
The highest airport on this list sits at 1,026 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At HSV when you get there the forecast at the estimated arrival, 6:33 am CDT (11:33 UTC)
HSV has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/4508 CEIBA, PR 24 nm from the route, at the departure end · security · ZSU
- 6/6783 Perry, GA, Friday, October 9, 2026 through Monday, October 19, 2026 UTC 14 nm from the route, 1275 nm along the route · drones kept away from a public gathering · until 19 October · ZTL
Daylight
Sunset at SJU 6:03 pm AST (22:03 UTC), at HSV 6:16 pm CDT (23:16 UTC) (civil twilight ends 6:41 pm CDT (23:41 UTC)). At 120 knots the arrival at HSV is before sunrise there (6:50 am CDT (11:50 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: Luis Munoz Marin International, Huntsville Intl-Carl T Jones Field.