Henry E Rohlsen Airport to Fernando Luis Ribas Dominicci Airport STX → SIG
87 nautical miles (100 statute miles) northwest on a straight line, true course 302°, about 315° magnetic at the departure end (variation 13W). At 120 knots that is 37 min at the quickest height in today's winds (34,000 ft, a 20-knot tailwind), arriving about 8:25 pm AST (00:25 UTC), after sunset at the destination. Right now STX is VFR, wind from the east-northeast (060°) at 6 knots; SIG is VFR, wind from the east-southeast (110°) at 9 knots, gusting to 15. 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: 825 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 STX.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- B738 at 38,000 ft, 15 nm northeast, 5:04 pm AST (21:04 UTC): a routine report with nothing remarked on. At the departure end, 15 nm northeast of the line.
as filed, and in English
SJU UA /OV SJU124083/TM 2104/FL380/TP B738/SK TOPS FL400
- Report
- a routine report filed through SJU
- Where
- 83 nm southeast (124°) of SJU
- Time
- 21:04 UTC
- Height
- at 38,000 ft
- Aircraft
- B738
- Sky
- tops 40,000 ft
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 1 forecast point nearest it (MIA). 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 | 190° at 4 kt | −1 kt | 121 kt | 43 min | 8:31 pm AST (00:31 UTC) | |
| 6,500 ft | light and variable | 0 | 17 °C | 120 kt | 44 min | 8:32 pm AST (00:32 UTC) |
| 8,500 ft | 180° at 4 kt | −2 kt | 15 °C | 122 kt | 43 min | 8:31 pm AST (00:31 UTC) |
| 10,500 ft | 180° at 2 kt | −1 kt | 12 °C | 121 kt | 43 min | 8:31 pm AST (00:31 UTC) |
| 12,500 ft | light and variable | 0 | 8 °C | 120 kt | 44 min | 8:32 pm AST (00:32 UTC) |
| 14,500 ft | 190° at 4 kt | −2 kt | 3 °C | 122 kt | 43 min | 8:31 pm AST (00:31 UTC) |
| 16,500 ft | 190° at 7 kt | −3 kt | -2 °C | 123 kt | 42 min | 8:30 pm AST (00:30 UTC) |
| 18,000 ft FL180 | 190° at 10 kt | −4 kt | -5 °C | 124 kt | 42 min | 8:30 pm AST (00:30 UTC) |
| 24,000 ft FL240 | 160° at 10 kt | −8 kt | -16 °C | 128 kt | 41 min | 8:29 pm AST (00:29 UTC) |
| 30,000 ft FL300 | 150° at 13 kt | −11 kt | -30 °C | 131 kt | 40 min | 8:28 pm AST (00:28 UTC) |
| 34,000 ft FL340 | 160° at 26 kt | −20 kt | -40 °C | 140 kt | 37 min | 8:25 pm AST (00:25 UTC) |
| 39,000 ft FL390 | 150° at 23 kt | −20 kt | -52 °C | 140 kt | 37 min | 8:25 pm AST (00:25 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; 966 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° |
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 |
|---|---|---|---|---|---|---|---|
| STX Christiansted, VI | departure | VFR | from the east-northeast (060°) at 6 knots | 10+ mi | none | 73 ft | 6:53 pm AST (22:53 UTC) |
| RVR Ceiba, PR | 58 nm out, 3 nm northeast of the line, tower | no report just now | 38 ft | ||||
| SIG San Juan, PR | destination | VFR Sky: scattered clouds at 3,000 feet, scattered clouds at 7,000 feet | from the east-southeast (110°) at 9 knots, gusting to 15 | 10+ mi | none | 9 ft | 6:45 pm AST (22:45 UTC) |
The highest airport on this list sits at 73 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At SIG when you get there the forecast at the estimated arrival, 8:25 pm AST (00:25 UTC)
SIG has no terminal forecast; use the nearest airport that does.
The forecast for STX, the departure
- From Sun 8:00 pm AST (00:00 UTC): wind from the east-northeast at 8 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, a broken layer at 5,000 feet
- From Mon 9:00 am AST (13:00 UTC): wind from the east-southeast at 12 knots, visibility more than 6 miles, showers nearby, scattered clouds at 3,500 feet
- From Mon 7:00 pm AST (23:00 UTC): wind from the east-northeast at 5 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, scattered clouds at 5,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/2698 VIEQUES, PR, Monday, January 19, 2026 through Friday, December 18, 2026 UTC 2 nm from the route, 39 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 18 December · ZSU
- 6/4508 CEIBA, PR 1 nm from the route, 58 nm along the route · security · ZSU
Daylight
Sunset at STX 5:59 pm AST (21:59 UTC), at SIG 6:04 pm AST (22:04 UTC) (civil twilight ends 6:26 pm AST (22:26 UTC)). At 120 knots the arrival at SIG is after sunset there (6:05 pm AST (22:05 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: Henry E Rohlsen Airport, Fernando Luis Ribas Dominicci Airport.