George Bush Intcntl/Houston Airport to Grand Junction Regional IAH → GJT
850 nautical miles (979 statute miles) northwest on a straight line, true course 314°, about 311° magnetic at the departure end (variation 3E). At 120 knots that is 6 h 26 min at the quickest height in today's winds (4,500 ft, a 12-knot tailwind), arriving about 3:30 am MDT (09:30 UTC), after sunset at the destination. Right now IAH is VFR, wind from the south-southeast (160°) at 4 knots; GJT is VFR, wind variable at 3 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: 30 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 3W: 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 524 to 603 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 307 nm of the route.
- AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft. Over the route from 583 to 692 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 653 to 791 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 last 168 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the last 148 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. 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 IAH.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- BE9L at 24,500 ft, 46 nm northeast, 9:21 pm CDT (02:21 UTC): moderate turbulence, remarks: ZDVWC-41. 692 nm along the route, 46 nm northeast of the line.
as filed, and in English
PUB UA /OV PUB250040/TM 0221/FL245/TP BE9L/TB OCNL MOD/RM ZDVWC-41
- Report
- a routine report filed through PUB
- Where
- 40 nm west (250°) of PUB
- Time
- 02:21 UTC
- Height
- at 24,500 ft
- Aircraft
- BE9L
- Turbulence
- occasional moderate
- Remarks
- ZDVWC-41
- B39M at 27,000 ft, 2 nm south, 7:42 pm CDT (00:42 UTC): light chop turbulence, remarks: zhu. At the departure end, 2 nm south 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
- A320 at 35,000 ft, 10 nm north, 7:43 pm CDT (00:43 UTC): light chop turbulence, remarks: ZFW47. 386 nm along the route, 10 nm north of the line.
as filed, and in English
CDS UA /OV CDS270030/TM 0043/FL350/TP A320/TB LGT CHOP/RM ZFW47
- Report
- a routine report filed through CDS
- Where
- 30 nm west (270°) of CDS
- Time
- 00:43 UTC
- Height
- at 35,000 ft
- Aircraft
- A320
- Turbulence
- light chop
- Remarks
- ZFW47
- E145 at 7,400 ft, 8 nm southwest, 7:15 pm CDT (00:15 UTC): remarks: reported below minimums visibility 1/2SM ZDVWC-41. 682 nm along the route, 8 nm southwest of the line.
as filed, and in English
ALS UA /OV ALS/TM 0015/FL074/TP E145/SK VASE UNKN/RM REPORTED BLO MINIMUMS VIS 1/2SM ZDVWC-41
- Report
- a routine report filed through ALS
- Where
- over ALS
- Time
- 00:15 UTC
- Height
- at 7,400 ft
- Aircraft
- E145
- Sky
- vase unknown
- Remarks
- reported below minimums visibility 1/2SM ZDVWC-41
- CL35 at 43,000 ft, 46 nm northeast, 7:21 pm CDT (00:21 UTC): remarks: mtw +/-300FT zdvwc. 692 nm along the route, 46 nm northeast of the line.
as filed, and in English
PUB UA /OV PUB250040/TM 0021/FL430/TP CL35/RM MTW +/-300FT ZDVWC
- Report
- a routine report filed through PUB
- Where
- 40 nm west (250°) of PUB
- Time
- 00:21 UTC
- Height
- at 43,000 ft
- Aircraft
- CL35
- Remarks
- mtw +/-300FT zdvwc
- E145 at 7,400 ft, 6 nm south, 7:15 pm CDT (00:15 UTC): remarks: base reported below minimums 1/2 miles visibility ZDVWC-41. 692 nm along the route, 6 nm south of the line.
as filed, and in English
ALS UA /OV KALS/TM 0015/FL074/TP E145/RM BASE REPORTED BELOW MINIMUMS 1/2 SM VIS ZDVWC-41
- Report
- a routine report filed through ALS
- Where
- over KALS
- Time
- 00:15 UTC
- Height
- at 7,400 ft
- Aircraft
- E145
- Remarks
- base reported below minimums 1/2 miles visibility ZDVWC-41
- B38M at 36,000 ft, 24 nm northeast, 9:22 pm CDT (02:22 UTC): light turbulence, remarks: mtw +/-200FT ZDVWC-30. 702 nm along the route, 24 nm northeast of the line.
as filed, and in English
ALS UA /OV ALS360035/TM 0222/FL360/TP B38M/TB LGT/RM MTW +/-200FT ZDVWC-30
- Report
- a routine report filed through ALS
- Where
- 35 nm north (360°) of ALS
- Time
- 02:22 UTC
- Height
- at 36,000 ft
- Aircraft
- B38M
- Turbulence
- light
- Remarks
- mtw +/-200FT ZDVWC-30
- BE9L at 20,000 ft, 12 nm northeast, 7:34 pm CDT (00:34 UTC): light rime icing, -9 °C, remarks: ZDVWC-41. 712 nm along the route, 12 nm northeast of the line.
as filed, and in English
ALS UA /OV ALS330035/TM 0034/FL200/TP BE9L/TA M09/IC LGT RIME/RM ZDVWC-41
- Report
- a routine report filed through ALS
- Where
- 35 nm northwest (330°) of ALS
- Time
- 00:34 UTC
- Height
- at 20,000 ft
- Aircraft
- BE9L
- Temperature
- −9 °C
- Icing
- light rime
- Remarks
- ZDVWC-41
- SW4 at 20,000 ft, 16 nm northeast, 8:00 pm CDT (01:00 UTC): light rime icing, 0 °C, remarks: ZDVWC-12. 771 nm along the route, 16 nm northeast of the line.
as filed, and in English
GUC UA /OV GUC/TM 0100/FL200/TP SW4/TA 00/IC LGT RIME/RM ZDVWC-12
- Report
- a routine report filed through GUC
- Where
- over GUC
- Time
- 01:00 UTC
- Height
- at 20,000 ft
- Aircraft
- SW4
- Temperature
- 0 °C
- Icing
- light rime
- Remarks
- ZDVWC-12
- LJ60 at 15,000 ft, 17 nm northeast, 7:28 pm CDT (00:28 UTC): light to moderate icing from 16,500 ft to 19,000 ft, -13 °C, remarks: during the descent zdvwc. 801 nm along the route, 17 nm northeast of the line.
as filed, and in English
MTJ UA /OV MTJ030030/TM 0028/FL150/TP LJ60/TA M13/IC LGT-MOD 190-165/RM DURD ZDVWC
- Report
- a routine report filed through MTJ
- Where
- 30 nm northeast (030°) of MTJ
- Time
- 00:28 UTC
- Height
- at 15,000 ft
- Aircraft
- LJ60
- Temperature
- −13 °C
- Icing
- light to moderate from 19,000 ft to 16,500 ft
- Remarks
- during the descent zdvwc
- C501 at 15,000 ft, 3 nm south, 9:32 pm CDT (02:32 UTC): light chop turbulence, light rime icing, -2 °C, remarks: zdvwc. At the destination end, 3 nm south of the line.
as filed, and in English
GJT UA /OV JNC090020/TM 0232/FL150/TP C501/TA M02/TB INTMT LGT CHOP/IC LGT RIME/RM ZDVWC
- Report
- a routine report filed through GJT
- Where
- 20 nm east (090°) of JNC
- Time
- 02:32 UTC
- Height
- at 15,000 ft
- Aircraft
- C501
- Temperature
- −2 °C
- Turbulence
- intermittent light chop
- Icing
- light rime
- Remarks
- zdvwc
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 8 forecast points nearest it (CLL, DAL, ABI, LBB, AMA, TCC, ALS, GJT). 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 | 200° at 31 kt | −12 kt | 17 °C | 132 kt | 6 h 26 min | 3:30 am MDT (09:30 UTC) |
| 6,500 ft | 200° at 30 kt | −10 kt | 17 °C | 130 kt | 6 h 32 min | 3:36 am MDT (09:36 UTC) |
| 8,500 ft | 210° at 25 kt | −3 kt | 14 °C | 123 kt | 6 h 55 min | 3:59 am MDT (09:59 UTC) |
| 10,500 ft | 230° at 26 kt | +4 kt | 9 °C | 116 kt | 7 h 20 min | 4:24 am MDT (10:24 UTC) |
| 12,500 ft | 230° at 26 kt | +6 kt | 5 °C | 114 kt | 7 h 27 min | 4:31 am MDT (10:31 UTC) |
| 14,500 ft | 230° at 28 kt | +5 kt | 1 °C | 115 kt | 7 h 23 min | 4:27 am MDT (10:27 UTC) |
| 16,500 ft | 230° at 29 kt | +4 kt | -3 °C | 116 kt | 7 h 20 min | 4:24 am MDT (10:24 UTC) |
| 18,000 ft FL180 | 220° at 30 kt | +3 kt | -6 °C | 117 kt | 7 h 16 min | 4:20 am MDT (10:20 UTC) |
| 24,000 ft FL240 | 240° at 38 kt | +10 kt | -17 °C | 110 kt | 7 h 44 min | 4:48 am MDT (10:48 UTC) |
| 30,000 ft FL300 | 250° at 52 kt | +23 kt | -28 °C | 97 kt | 8 h 46 min | 5:50 am MDT (11:50 UTC) |
| 34,000 ft FL340 | 250° at 48 kt | +26 kt | -37 °C | 94 kt | 9 h 03 min | 6:07 am MDT (12:07 UTC) |
| 39,000 ft FL390 | 260° at 39 kt | +26 kt | -48 °C | 94 kt | 9 h 03 min | 6:07 am MDT (12:07 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| CLL | used from 0 nm out; 40 nm from the line | 170/22 | 170/26 18° | 200/15 14° | 240/13 8° | 240/15 -5° | 260/17 -13° | 290/27 -29° | 290/22 -40° | 320/30 -51° |
| DAL | used from 148 nm out; 72 nm from the line | 190/29 | 220/23 17° | 220/17 13° | 250/18 8° | 230/18 -5° | 240/18 -15° | 270/34 -29° | 280/33 -39° | 300/36 -51° |
| ABI | used from 198 nm out; 59 nm from the line | 200/31 17° | 210/21 15° | 240/15 9° | 250/14 -4° | 250/24 -14° | 250/36 -28° | 270/35 -38° | 290/41 -50° | |
| LBB | used from 346 nm out; 61 nm from the line | 200/36 18° | 220/19 15° | 240/20 8° | 230/24 -4° | 240/37 -16° | 250/57 -28° | 250/51 -38° | 270/47 -50° | |
| AMA | used from 396 nm out; 34 nm from the line | 210/38 | 230/29 14° | 240/29 7° | 220/27 -5° | 240/37 -18° | 240/66 -28° | 250/59 -37° | 260/47 -49° | |
| TCC | used from 494 nm out; 43 nm from the line | 210/42 | 230/33 14° | 230/32 6° | 220/35 -6° | 230/49 -19° | 240/72 -27° | 250/62 -36° | 250/52 -48° | |
| ALS | used from 593 nm out; 72 nm from the line | 230/37 4° | 220/54 -9° | 230/62 -22° | 240/77 -26° | 240/74 -33° | 230/59 -45° | |||
| GJT | used from 791 nm out; 35 nm from the line | 210/43 7° | 230/45 1° | 220/49 -12° | 220/62 -22° | 220/59 -28° | 230/60 -33° | 220/55 -45° |
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 |
|---|---|---|---|---|---|---|---|
| IAH Houston, TX | departure | VFR | from the south-southeast (160°) at 4 knots | 10+ mi | none | 95 ft | 9:53 pm CDT (02:53 UTC) |
| CLL College Station, TX | 59 nm out, 11 nm southwest of the line, tower | VFR | from the south-southeast (160°) at 8 knots | 10+ mi | none | 320 ft | 02:53 UTC |
| ACT Waco, TX | 138 nm out, 5 nm northeast of the line, tower | VFR | from the south-southeast (160°) at 12 knots | 10+ mi | none | 516 ft | 02:51 UTC |
| SEP Stephenville, TX | 198 nm out, 1 nm southwest of the line | VFR Sky: scattered clouds at 12,000 feet | from the south-southeast (160°) at 3 knots | 10+ mi | none | 1,321 ft | 02:55 UTC |
| AMA Amarillo, TX | 445 nm out, 19 nm northeast of the line, tower | VFR | from the south (170°) at 21 knots, gusting to 27 | 10+ mi | none | 3,606 ft | 02:53 UTC |
| RTN Raton, NM | 613 nm out, 2 nm northeast of the line | VFR Sky: a broken layer at 9,000 feet, overcast at 11,000 feet | from the west-southwest (240°) at 9 knots | 10+ mi | 9,000 ft | 6,352 ft | 02:53 UTC |
| ALS Alamosa, CO | 692 nm out, 6 nm south of the line | VFR Sky: a few clouds at 4,500 feet, a broken layer at 6,000 feet, a broken layer at 8,000 feet Weather: light rain | from the south (170°) at 10 knots | 9 mi | 6,000 ft | 7,539 ft | 02:52 UTC |
| AJZ Delta, CO | 821 nm out, 3 nm southwest of the line | reported, no category | from the west-southwest (240°) at 6 knots | none | 5,193 ft | 02:55 UTC | |
| GJT Grand Junction, CO | destination | VFR Sky: a few clouds at 8,500 feet, a few clouds at 11,000 feet | variable at 3 knots | 10+ mi | none | 4,861 ft | 8:53 pm MDT (02:53 UTC) |
The highest airport on this list sits at 7,539 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At GJT when you get there the forecast at the estimated arrival, 3:30 am MDT (09:30 UTC)
Wind from the south-southeast at 6 knots, visibility more than 6 miles, low-level wind shear, a few clouds at 6,000 feet, scattered clouds at 11,000 feet VFR
The whole forecast for GJT
- From Sun 9:00 pm MDT (03:00 UTC): wind from the south-southeast at 6 knots, visibility more than 6 miles, low-level wind shear, a few clouds at 6,000 feet, scattered clouds at 11,000 feet
- 30% chance between Sun 9:00 pm MDT (03:00 UTC) and 12:00 am MDT (06:00 UTC): visibility 4 miles, light rain showers, a broken layer at 5,000 feet
- From Mon 11:00 am MDT (17:00 UTC): wind from the south at 18 knots, gusting to 27, visibility more than 6 miles, scattered clouds at 3,500 feet, a broken layer at 7,000 feet
- 30% chance between Mon 11:00 am MDT (17:00 UTC) and 1:00 pm MDT (19:00 UTC): visibility 4 miles, light rain showers, a broken layer at 3,500 feet, a broken layer at 4,500 feet
- From Mon 1:00 pm MDT (19:00 UTC): wind from the south at 16 knots, gusting to 24, visibility more than 6 miles, scattered clouds at 5,000 feet, a broken layer at 6,000 feet
- 30% chance between Mon 1:00 pm MDT (19:00 UTC) and 4:00 pm MDT (22:00 UTC): visibility 4 miles, light rain showers, a broken layer at 5,000 feet, a broken layer at 6,000 feet
- From Mon 4:00 pm MDT (22:00 UTC): wind from the southwest at 13 knots, gusting to 24, visibility more than 6 miles, a few clouds at 7,000 feet, scattered clouds at 10,000 feet
- 30% chance between Mon 4:00 pm MDT (22:00 UTC) and 6:00 pm MDT (00:00 UTC): visibility 4 miles, light rain showers, a broken layer at 7,000 feet
The forecast for IAH, the departure
- From Sun 10:00 pm CDT (03:00 UTC): wind from the south-southeast at 7 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
- From Mon 4:00 am CDT (09:00 UTC): wind from the east-southeast at 4 knots, visibility more than 6 miles, scattered clouds at 2,500 feet, scattered clouds at 25,000 feet
- From Mon 12:00 pm CDT (17:00 UTC): wind from the southeast at 11 knots, visibility more than 6 miles, scattered clouds at 3,500 feet, a broken layer at 25,000 feet
- 30% chance between Mon 1:00 pm CDT (18:00 UTC) and 5:00 pm CDT (22:00 UTC): light rain showers
Temporary flight restrictions on the line or within 25 nm of it
- 6/0543 MCGREGOR, TX 11 nm from the route, 138 nm along the route · security · ZFW
Daylight
Sunset at IAH 6:54 pm CDT (23:54 UTC), at GJT 6:40 pm MDT (00:40 UTC) (civil twilight ends 7:06 pm MDT (01:06 UTC)). At 120 knots the arrival at GJT is before sunrise there (7:20 am MDT (13:20 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: George Bush Intcntl/Houston Airport, Grand Junction Regional.