William P Hobby Airport to MC Ghee Tyson Airport HOU → TYS
679 nautical miles (781 statute miles) northeast on a straight line, true course 054°, about 051° magnetic at the departure end (variation 3E). At 120 knots that is 5 h 18 min at the quickest height in today's winds (3,500 ft, a 8-knot tailwind), arriving about 2:26 pm EDT (18:26 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: 113 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 1E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, mist, fog). Over the route from 170 to 459 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 last 140 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the last 60 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 HOU.
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 eastbound cruising heights for this course (VFR: odd 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 (HOU, LCH, JAN, BHM, HSV, TYS). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 3,500 ft | 250° at 8 kt | −8 kt | 128 kt | 5 h 18 min | 2:26 pm EDT (18:26 UTC) | |
| 5,500 ft | 260° at 7 kt | −7 kt | 127 kt | 5 h 21 min | 2:29 pm EDT (18:29 UTC) | |
| 7,500 ft | 290° at 7 kt | −5 kt | 14 °C | 125 kt | 5 h 26 min | 2:34 pm EDT (18:34 UTC) |
| 9,500 ft | 310° at 9 kt | −3 kt | 10 °C | 123 kt | 5 h 31 min | 2:39 pm EDT (18:39 UTC) |
| 11,500 ft | 320° at 8 kt | −2 kt | 7 °C | 122 kt | 5 h 34 min | 2:42 pm EDT (18:42 UTC) |
| 13,500 ft | 310° at 10 kt | −2 kt | 3 °C | 122 kt | 5 h 34 min | 2:42 pm EDT (18:42 UTC) |
| 15,500 ft | 310° at 13 kt | −3 kt | -1 °C | 123 kt | 5 h 31 min | 2:39 pm EDT (18:39 UTC) |
| 17,500 ft | 310° at 15 kt | −4 kt | -5 °C | 124 kt | 5 h 29 min | 2:37 pm EDT (18:37 UTC) |
| 18,000 ft FL180 | 310° at 16 kt | −5 kt | -6 °C | 125 kt | 5 h 26 min | 2:34 pm EDT (18:34 UTC) |
| 24,000 ft FL240 | 300° at 16 kt | −6 kt | -17 °C | 126 kt | 5 h 23 min | 2:31 pm EDT (18:31 UTC) |
| 30,000 ft FL300 | 320° at 33 kt | −3 kt | -31 °C | 123 kt | 5 h 31 min | 2:39 pm EDT (18:39 UTC) |
| 34,000 ft FL340 | 330° at 37 kt | 0 | -40 °C | 120 kt | 5 h 40 min | 2:48 pm EDT (18:48 UTC) |
| 39,000 ft FL390 | 330° at 38 kt | +5 kt | -51 °C | 115 kt | 5 h 54 min | 3:02 pm EDT (19:02 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| HOU | used from 0 nm out; 25 nm from the line | 180/22 | 180/20 16° | 170/7 15° | L/V 8° | 220/11 -6° | 260/15 -13° | 310/20 -30° | 320/20 -40° | 350/32 -51° |
| LCH | used from 50 nm out; 48 nm from the line | 170/21 | 160/23 18° | 170/13 13° | 170/6 8° | 300/12 -7° | 280/16 -14° | 320/27 -30° | 330/23 -41° | 340/38 -51° |
| JAN | used from 200 nm out; 89 nm from the line | 240/10 | 260/15 18° | 280/10 11° | 290/6 6° | 290/15 -5° | 300/15 -17° | 320/35 -30° | 330/38 -40° | 330/39 -51° |
| BHM | used from 399 nm out; 83 nm from the line | 310/19 | 310/15 16° | 320/19 11° | 330/15 5° | 330/23 -5° | 320/14 -18° | 320/36 -32° | 330/44 -40° | 340/36 -51° |
| HSV | used from 499 nm out; 9 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° |
| TYS | used from 599 nm out; 55 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° |
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 |
|---|---|---|---|---|---|---|---|
| HOU Houston, TX | departure | no report just now | 46 ft | ||||
| BPT Beaumont/Port Arthur, TX | 60 nm out, 24 nm southeast of the line, tower | no report just now | 14 ft | ||||
| DRI De Ridder, LA | 120 nm out, 3 nm northeast of the line | no report just now | 201 ft | ||||
| AEX Alexandria, LA | 170 nm out, 4 nm northeast of the line, tower | no report just now | 88 ft | ||||
| VKS Vicksburg, MS | 270 nm out, 3 nm northeast of the line | no report just now | 107 ft | ||||
| HKS Jackson, MS | 309 nm out, 16 nm south of the line, tower | no report just now | 341 ft | ||||
| STF Starkville, MS | 399 nm out, 2 nm north of the line | no report just now | 332 ft | ||||
| GTR Columbus/W Point/Starkville, MS | 409 nm out, 4 nm southeast of the line, tower | no report just now | 264 ft | ||||
| HSV Huntsville, AL | 529 nm out, 10 nm northwest of the line, tower | no report just now | 628 ft | ||||
| CHA Chattanooga, TN | 609 nm out, 12 nm south of the line, tower | no report just now | 682 ft | ||||
| MNV Madisonville, TN | 659 nm out, 6 nm south of the line | no report just now | 1,031 ft | ||||
| TYS Knoxville, TN | destination | no report just now | 986 ft |
The highest airport on this list sits at 1,031 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At TYS when you get there the forecast at the estimated arrival, 2:26 pm EDT (18:26 UTC)
TYS 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 HOU 6:54 pm CDT (23:54 UTC), at TYS 7:04 pm EDT (23:04 UTC) (civil twilight ends 7:30 pm EDT (23:30 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: William P Hobby Airport, MC Ghee Tyson Airport.