Conroe/North Houston Regional to Valley International CXO → HRL
275 nautical miles (316 statute miles) southwest on a straight line, true course 206°, about 201° magnetic at the departure end (variation 5E). At 120 knots that is 2 h 05 min at the quickest height in today's winds (39,000 ft, a 12-knot tailwind), arriving about 11:48 pm CDT (04:48 UTC), after sunset at the destination. Right now CXO is VFR, wind from the southeast (130°) at 5 knots; HRL is VFR, wind from the east (100°) at 5 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: 86 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 CXO.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- B39M at 27,000 ft, 14 nm southeast, 7:42 pm CDT (00:42 UTC): light chop turbulence, remarks: zhu. 20 nm along the route, 14 nm southeast of the line.
as filed, and in English
IAH UA /OV IH340035/TM 0042/FL270/TP B39M/TB LT CHOP DURC/RM ZHU
- Report
- a routine report filed through IAH
- Where
- IH340035
- Time
- 00:42 UTC
- Height
- at 27,000 ft
- Aircraft
- B39M
- Turbulence
- lt chop during the climb
- Remarks
- zhu
- B38M at 36,000 ft, 36 nm southeast, 7:26 pm CDT (00:26 UTC): light chop turbulence, remarks: zhu. 137 nm along the route, 36 nm southeast of the line.
as filed, and in English
CRP UA /OV CRP075080/TM 0026/FL360/TP B38M/TB OCNL LGT CHOP/RM ZHU
- Report
- a routine report filed through CRP
- Where
- 80 nm east (075°) of CRP
- Time
- 00:26 UTC
- Height
- at 36,000 ft
- Aircraft
- B38M
- Turbulence
- occasional light chop
- Remarks
- zhu
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 4 forecast points nearest it (HOU, PSX, CRP, BRO). 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 | 160° at 22 kt | +15 kt | 105 kt | 2 h 37 min | 12:20 am CDT (05:20 UTC) | |
| 6,500 ft | 170° at 20 kt | +15 kt | 18 °C | 105 kt | 2 h 37 min | 12:20 am CDT (05:20 UTC) |
| 8,500 ft | 180° at 15 kt | +13 kt | 15 °C | 107 kt | 2 h 34 min | 12:17 am CDT (05:17 UTC) |
| 10,500 ft | 190° at 12 kt | +11 kt | 12 °C | 109 kt | 2 h 31 min | 12:14 am CDT (05:14 UTC) |
| 12,500 ft | 210° at 10 kt | +10 kt | 8 °C | 110 kt | 2 h 30 min | 12:13 am CDT (05:13 UTC) |
| 14,500 ft | 220° at 8 kt | +8 kt | 4 °C | 112 kt | 2 h 27 min | 12:10 am CDT (05:10 UTC) |
| 16,500 ft | 230° at 6 kt | +6 kt | -1 °C | 114 kt | 2 h 25 min | 12:08 am CDT (05:08 UTC) |
| 18,000 ft FL180 | 250° at 6 kt | +4 kt | -4 °C | 116 kt | 2 h 22 min | 12:05 am CDT (05:05 UTC) |
| 24,000 ft FL240 | 240° at 6 kt | +5 kt | -14 °C | 115 kt | 2 h 23 min | 12:06 am CDT (05:06 UTC) |
| 30,000 ft FL300 | 330° at 10 kt | −5 kt | -29 °C | 125 kt | 2 h 12 min | 11:55 pm CDT (04:55 UTC) |
| 34,000 ft FL340 | 310° at 9 kt | −1 kt | -40 °C | 121 kt | 2 h 16 min | 11:59 pm CDT (04:59 UTC) |
| 39,000 ft FL390 | 350° at 16 kt | −12 kt | -52 °C | 132 kt | 2 h 05 min | 11:48 pm CDT (04:48 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| HOU | used from 0 nm out; 27 nm from the line | 160/22 | 150/27 19° | 180/16 14° | 250/7 9° | 270/10 -5° | 270/16 -13° | 310/23 -29° | 310/26 -40° | 330/20 -52° |
| PSX | used from 49 nm out; 34 nm from the line | 160/24 | 160/23 19° | 180/14 15° | 210/11 9° | 240/8 -4° | 250/8 -13° | 320/14 -29° | 300/16 -40° | 340/17 -51° |
| CRP | used from 147 nm out; 35 nm from the line | 150/24 | 180/19 19° | 190/13 14° | 200/14 9° | 230/5 -4° | 170/6 -14° | 360/6 -29° | L/V -40° | 350/18 -52° |
| BRO | used from 245 nm out; 33 nm from the line | 150/22 | 160/18 18° | 160/13 14° | 150/9 10° | 050/5 -3° | L/V -15° | 100/13 -29° | 120/15 -40° | 080/9 -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 |
|---|---|---|---|---|---|---|---|
| CXO Houston, TX | departure | VFR | from the southeast (130°) at 5 knots | 10+ mi | none | 244 ft | 8:53 pm CDT (01:53 UTC) |
| DWH Houston, TX | 20 nm out, 1 nm east of the line, tower | VFR | from the southeast (140°) at 7 knots | 10+ mi | none | 152 ft | 01:53 UTC |
| SGR Houston, TX | 49 nm out, 9 nm east of the line, tower | VFR | from the southeast (140°) at 6 knots | 10+ mi | none | 81 ft | 01:53 UTC |
| PSX Palacios, TX | 108 nm out, 3 nm east of the line | VFR | from the east-southeast (110°) at 7 knots | 10+ mi | none | 14 ft | 01:53 UTC |
| RAS Port Aransas, TX | 177 nm out, 13 nm northwest of the line | VFR Sky: scattered clouds at 3,000 feet, scattered clouds at 3,800 feet | from the east (100°) at 11 knots, gusting to 17 | 10+ mi | none | 5 ft | 02:35 UTC |
| HRL Harlingen, TX | destination | VFR Sky: scattered clouds at 5,000 feet | from the east (100°) at 5 knots | 10+ mi | none | 36 ft | 8:52 pm CDT (01:52 UTC) |
The highest airport on this list sits at 244 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At HRL when you get there the forecast at the estimated arrival, 11:48 pm CDT (04:48 UTC)
Wind from the southeast at 8 knots, visibility more than 6 miles, a few clouds at 5,000 feet VFR
The whole forecast for HRL
- From Sun 7:00 pm CDT (00:00 UTC): wind from the east at 13 knots, visibility more than 6 miles, a few clouds at 5,000 feet
- From Sun 8:00 pm CDT (01:00 UTC): wind from the southeast at 8 knots, visibility more than 6 miles, a few clouds at 5,000 feet
- From Mon 11:00 am CDT (16:00 UTC): wind from the southeast at 14 knots, gusting to 22, visibility more than 6 miles, scattered clouds at 4,500 feet
The forecast for CXO, the departure
- From Sun 7:00 pm CDT (00:00 UTC): wind from the south-southeast at 10 knots, visibility more than 6 miles, a few clouds at 25,000 feet
- From Sun 8:00 pm CDT (01:00 UTC): wind from the southeast at 5 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
- From Mon 4:00 am CDT (09:00 UTC): wind from the southeast at 2 knots, visibility more than 6 miles, scattered clouds at 2,000 feet, scattered clouds at 25,000 feet
- At times between Mon 4:00 am CDT (09:00 UTC) and 8:00 am CDT (13:00 UTC): visibility 3 miles, mist
- From Mon 11:00 am CDT (16:00 UTC): wind from the south-southeast at 8 knots, visibility more than 6 miles, scattered clouds at 2,500 feet, scattered clouds at 3,500 feet
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 CXO 6:54 pm CDT (23:54 UTC), at HRL 7:05 pm CDT (00:05 UTC) (civil twilight ends 7:29 pm CDT (00:29 UTC)). At 120 knots the arrival at HRL is before sunrise there (7:28 am CDT (12:28 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: Conroe/North Houston Regional, Valley International.