Joslin Fld/Magic Valley Regional to George Bush Intcntl/Houston Airport TWF → IAH
1,188 nautical miles (1,367 statute miles) southeast on a straight line, true course 123°, about 110° magnetic at the departure end (variation 13E). At 120 knots that is 8 h 26 min at the quickest height in today's winds (34,000 ft, a 21-knot tailwind), arriving about 11:11 am CDT (16:11 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: 1 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 C12C: thunderstorms (a convective SIGMET) up to 25,000 ft, moving from the southwest at 40 knots, until 2:55 am MDT (08:55 UTC). Over the route from 489 to 539 nm out.
as issued
WSUS32 KKCI 120655 MKCC WST 120655 CONVECTIVE SIGMET 12C VALID UNTIL 0855Z CO NM FROM 40W PUB-30SSE PUB-30W CIM-50WSW ALS-40W PUB DMSHG AREA TS MOV FROM 22040KT. TOPS TO FL250.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft, from 12:00 am MDT (06:00 UTC). Over the first 299 nm of the route.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft, from 12:00 am MDT (06:00 UTC). Over the first 10 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist), from 12:00 am MDT (06:00 UTC). Over the first 349 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft, from 12:00 am MDT (06:00 UTC). Over the route from 160 to 639 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft, from 12:00 am MDT (06:00 UTC). Over the route from 180 to 469 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), from 12:00 am MDT (06:00 UTC). Over the route from 309 to 529 nm out.
- AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft, from 12:00 am MDT (06:00 UTC). Over the route from 479 to 589 nm out.
- 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), from 12:00 am MDT (06:00 UTC). Over the route from 649 to 649 nm out.
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 TWF.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- PC12 at 12,000 ft, 36 nm southwest, 1:08 am MDT (07:08 UTC): light turbulence, no icing, 4 °C, remarks: instrument conditions ZDVWC-11. 319 nm along the route, 36 nm southwest of the line.
as filed, and in English
GJT UA /OV JNC237019/TM 0708/FL120/TP PC12/TA 04/TB OCNL LGT/IC NEG/RM IMC. ZDVWC-11
- Report
- a routine report filed through GJT
- Where
- 19 nm southwest (237°) of JNC
- Time
- 07:08 UTC
- Height
- at 12,000 ft
- Aircraft
- PC12
- Temperature
- 4 °C
- Turbulence
- occasional light
- Icing
- none
- Remarks
- instrument conditions ZDVWC-11
- E170 at 4,800 ft, 10 nm southwest, 12:31 am MDT (06:31 UTC): no turbulence, no icing, clear from 4,800 ft to 60,000 ft, remarks: during the descent rnav Y 11 lgjt zdvwc. 339 nm along the route, 10 nm southwest of the line.
as filed, and in English
GJT UA /OV GJT/TM 0631/FL048/TP E170/SK SKC/TB NEG/IC NEG/RM DURD RNAV Y 11 LGJT. ZDVWC
- Report
- a routine report filed through GJT
- Where
- over GJT
- Time
- 06:31 UTC
- Height
- at 4,800 ft
- Aircraft
- E170
- Sky
- clear
- Turbulence
- none
- Icing
- none
- Remarks
- during the descent rnav Y 11 lgjt zdvwc
- PC12 at 26,000 ft, 17 nm northeast, 12:27 am MDT (06:27 UTC): light chop turbulence, remarks: ZDVWC-12. 449 nm along the route, 17 nm northeast of the line.
as filed, and in English
GUC UA /OV HBU090040/TM 0627/FL260/TP PC12/TB OCNL LGT CHOP/RM ZDVWC-12
- Report
- a routine report filed through GUC
- Where
- 40 nm east (090°) of HBU
- Time
- 06:27 UTC
- Height
- at 26,000 ft
- Aircraft
- PC12
- Turbulence
- occasional light chop
- Remarks
- ZDVWC-12
- A320 at 31,000 ft, 43 nm northeast, 12:58 am MDT (06:58 UTC): light chop turbulence, remarks: mtw a 10-knot loss of airspeed 100FT zdvwc. 489 nm along the route, 43 nm northeast of the line.
as filed, and in English
PUB UA /OV PUB260040/TM 0658/FL310/TP A320/TB LGT CHOP/RM MTW +/-10KT 100FT. ZDVWC
- Report
- a routine report filed through PUB
- Where
- 40 nm west (260°) of PUB
- Time
- 06:58 UTC
- Height
- at 31,000 ft
- Aircraft
- A320
- Turbulence
- light chop
- Remarks
- mtw a 10-knot loss of airspeed 100FT 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 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 11 forecast points nearest it (PIH, SLC, GJT, ALS, TCC, AMA, LBB, ABI, DAL, CLL, HOU). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 5,500 ft | 200° at 23 kt | +9 kt | 17 °C | 111 kt | 10 h 42 min | 1:27 pm CDT (18:27 UTC) |
| 7,500 ft | 210° at 24 kt | +4 kt | 13 °C | 116 kt | 10 h 14 min | 12:59 pm CDT (17:59 UTC) |
| 9,500 ft | 220° at 22 kt | −1 kt | 9 °C | 121 kt | 9 h 49 min | 12:34 pm CDT (17:34 UTC) |
| 11,500 ft | 230° at 25 kt | −5 kt | 5 °C | 125 kt | 9 h 30 min | 12:15 pm CDT (17:15 UTC) |
| 13,500 ft | 230° at 27 kt | −5 kt | 1 °C | 125 kt | 9 h 30 min | 12:15 pm CDT (17:15 UTC) |
| 15,500 ft | 220° at 30 kt | −4 kt | -3 °C | 124 kt | 9 h 35 min | 12:20 pm CDT (17:20 UTC) |
| 17,500 ft | 220° at 33 kt | −2 kt | -7 °C | 122 kt | 9 h 44 min | 12:29 pm CDT (17:29 UTC) |
| 18,000 ft FL180 | 220° at 34 kt | −2 kt | -8 °C | 122 kt | 9 h 44 min | 12:29 pm CDT (17:29 UTC) |
| 24,000 ft FL240 | 220° at 43 kt | −4 kt | -19 °C | 124 kt | 9 h 35 min | 12:20 pm CDT (17:20 UTC) |
| 30,000 ft FL300 | 240° at 54 kt | −16 kt | -28 °C | 136 kt | 8 h 44 min | 11:29 am CDT (16:29 UTC) |
| 34,000 ft FL340 | 240° at 52 kt | −21 kt | -36 °C | 141 kt | 8 h 26 min | 11:11 am CDT (16:11 UTC) |
| 39,000 ft FL390 | 240° at 43 kt | −19 kt | -47 °C | 139 kt | 8 h 33 min | 11:18 am CDT (16:18 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| PIH | used from 0 nm out; 74 nm from the line | L/V | 240/13 1° | 240/15 -3° | 210/42 -15° | 200/70 -25° | 220/74 -29° | 220/71 -36° | 220/62 -43° | |
| SLC | used from 100 nm out; 33 nm from the line | 200/5 | 230/8 2° | 220/20 -2° | 210/40 -12° | 190/53 -25° | 210/62 -30° | 220/69 -34° | 220/64 -43° | |
| GJT | used from 250 nm out; 64 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° | ||
| ALS | used from 399 nm out; 76 nm from the line | 230/37 4° | 220/54 -9° | 230/62 -22° | 240/77 -26° | 240/74 -33° | 230/59 -45° | |||
| TCC | used from 599 nm out; 67 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° | |
| AMA | used from 699 nm out; 19 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° | |
| LBB | used from 799 nm out; 68 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° | |
| ABI | used from 848 nm out; 70 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° | |
| DAL | used from 998 nm out; 71 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° |
| CLL | used from 1048 nm out; 53 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° |
| HOU | used from 1148 nm out; 39 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° |
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 |
|---|---|---|---|---|---|---|---|
| TWF Twin Falls, ID | departure | no report just now | 4,153 ft | ||||
| BYI Burley, ID | 20 nm out, 21 nm northeast of the line | no report just now | 4,153 ft | ||||
| OGD Ogden, UT | 140 nm out, 5 nm west of the line, tower | no report just now | 4,472 ft | ||||
| GJT Grand Junction, CO | 339 nm out, 10 nm southwest of the line, tower | no report just now | 4,861 ft | ||||
| GUC Gunnison, CO | 419 nm out, 7 nm northeast of the line | no report just now | 7,679 ft | ||||
| RTN Raton, NM | 579 nm out, 6 nm west of the line | no report just now | 6,352 ft | ||||
| DHT Dalhart, TX | 679 nm out, 22 nm northeast of the line | no report just now | 3,991 ft | ||||
| AMA Amarillo, TX | 739 nm out, 13 nm northeast of the line, tower | no report just now | 3,606 ft | ||||
| BKD Breckenridge, TX | 938 nm out, 8 nm south of the line | no report just now | 1,284 ft | ||||
| ACT Waco, TX | 1048 nm out, 3 nm east of the line, tower | no report just now | 516 ft | ||||
| CLL College Station, TX | 1128 nm out, 11 nm southwest of the line, tower | no report just now | 320 ft | ||||
| IAH Houston, TX | destination | no report just now | 95 ft |
The highest airport on this list sits at 7,679 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At IAH when you get there the forecast at the estimated arrival, 11:11 am CDT (16:11 UTC)
IAH has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/0543 MCGREGOR, TX 13 nm from the route, 1048 nm along the route · security · ZFW
Daylight
Sunset at TWF 6:59 pm MDT (00:59 UTC), at IAH 6:54 pm CDT (23:54 UTC) (civil twilight ends 7:18 pm CDT (00:18 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: Joslin Fld/Magic Valley Regional, George Bush Intcntl/Houston Airport.