Joslin Fld/Magic Valley Regional to Tucson International TWF → TUS
645 nautical miles (742 statute miles) south on a straight line, true course 164°, about 151° magnetic at the departure end (variation 13E). At 120 knots that is 6 h 31 min at the quickest height in today's winds (7,500 ft, a 21-knot headwind), arriving about 1:40 pm MST (20:40 UTC). Right now TWF is VFR, wind from the southwest (220°) at 4 knots; TUS is VFR, wind from the south (180°) at 7 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: 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
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the first 367 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 575 nm of the route.
- AIRMET SIERRA 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Near the route, 30 nm along the route.
- AIRMET SIERRA 2E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 258 to 506 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the route from 298 to 506 nm out.
- AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 347 to 536 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
- B739 at 27,000 ft, 42 nm west, 6:56 am MDT (12:56 UTC): moderate chop turbulence. At the departure end, 42 nm west of the line.
as filed, and in English
TWF UA /OV TWF247042/TM 1256/FL270/TP B739/TB MOD CHOP/ZLC
- Report
- a routine report filed through TWF
- Where
- 42 nm southwest (247°) of TWF
- Time
- 12:56 UTC
- Height
- at 27,000 ft
- Aircraft
- B739
- Turbulence
- moderate chop/zlc
- BCS3 at 19,000 ft, 45 nm east, 7:32 am MDT (13:32 UTC): moderate rime icing, -15 °C. 208 nm along the route, 45 nm east of the line.
as filed, and in English
DTA UA /OV DTA038010/TM 1332/FL190/TP BCS3/TA M15/IC MOD RIME 140-190 TOP 200/ZLC
- Report
- a routine report filed through DTA
- Where
- 10 nm northeast (038°) of DTA
- Time
- 13:32 UTC
- Height
- at 19,000 ft
- Aircraft
- BCS3
- Temperature
- −15 °C
- Icing
- moderate rime from 14,000 ft to 19,000 ft top 200/ZLC
- B752 at 10,000 ft, 16 nm west, 7:15 am MDT (13:15 UTC): moderate turbulence, remarks: during the climb. 555 nm along the route, 16 nm west of the line.
as filed, and in English
PHX UA /OV PXR050015/TM 1315/FL100/TP B752/TB MOD/RM DURC
- Report
- a routine report filed through PHX
- Where
- 15 nm northeast (050°) of PXR
- Time
- 13:15 UTC
- Height
- at 10,000 ft
- Aircraft
- B752
- Turbulence
- moderate
- Remarks
- during the climb
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 7 forecast points nearest it (PIH, SLC, ELY, BCE, PRC, PHX, TUS). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 7,500 ft | 200° at 26 kt | +21 kt | 6 °C | 99 kt | 6 h 31 min | 1:40 pm MST (20:40 UTC) |
| 9,500 ft | 200° at 31 kt | +25 kt | 3 °C | 95 kt | 6 h 47 min | 1:56 pm MST (20:56 UTC) |
| 11,500 ft | 210° at 34 kt | +26 kt | -1 °C | 94 kt | 6 h 52 min | 2:01 pm MST (21:01 UTC) |
| 13,500 ft | 210° at 38 kt | +27 kt | -4 °C | 93 kt | 6 h 56 min | 2:05 pm MST (21:05 UTC) |
| 15,500 ft | 210° at 44 kt | +29 kt | -8 °C | 91 kt | 7 h 05 min | 2:14 pm MST (21:14 UTC) |
| 17,500 ft | 220° at 49 kt | +31 kt | -12 °C | 89 kt | 7 h 15 min | 2:24 pm MST (21:24 UTC) |
| 18,000 ft FL180 | 220° at 51 kt | +32 kt | -13 °C | 88 kt | 7 h 20 min | 2:29 pm MST (21:29 UTC) |
| 24,000 ft FL240 | 220° at 65 kt | +39 kt | -22 °C | 81 kt | 7 h 58 min | 3:07 pm MST (22:07 UTC) |
| 30,000 ft FL300 | 220° at 75 kt | +44 kt | -30 °C | 76 kt | 8 h 29 min | 3:38 pm MST (22:38 UTC) |
| 34,000 ft FL340 | 220° at 75 kt | +43 kt | -36 °C | 77 kt | 8 h 23 min | 3:32 pm MST (22:32 UTC) |
| 39,000 ft FL390 | 220° at 72 kt | +41 kt | -45 °C | 79 kt | 8 h 10 min | 3:19 pm MST (22:19 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| PIH | used from 0 nm out; 91 nm from the line | 070/8 | 150/19 1° | 180/32 -4° | 210/44 -17° | 210/37 -28° | 210/74 -31° | 220/68 -35° | 220/60 -43° | |
| SLC | used from 50 nm out; 98 nm from the line | 200/16 | 210/23 4° | 220/34 -3° | 210/40 -16° | 220/66 -23° | 220/64 -31° | 220/57 -36° | 220/50 -43° | |
| ELY | used from 149 nm out; 70 nm from the line | 210/34 1° | 220/40 -4° | 220/39 -17° | 210/51 -24° | 220/65 -30° | 220/60 -37° | 220/56 -44° | ||
| BCE | used from 248 nm out; 42 nm from the line | 200/32 -2° | 210/57 -15° | 220/71 -22° | 220/69 -30° | 220/64 -38° | 220/67 -44° | |||
| PRC | used from 397 nm out; 66 nm from the line | 200/37 6° | 200/35 0° | 220/60 -11° | 220/71 -20° | 220/88 -29° | 220/98 -35° | 220/94 -45° | ||
| PHX | used from 496 nm out; 47 nm from the line | 190/15 | 210/25 12° | 200/34 4° | 200/34 2° | 220/58 -9° | 220/75 -19° | 220/91 -28° | 220/100 -35° | 220/95 -47° |
| TUS | used from 595 nm out; 25 nm from the line | 200/12 13° | 200/34 7° | 210/41 4° | 230/53 -7° | 220/69 -19° | 220/84 -27° | 220/88 -36° | 220/83 -48° |
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 | VFR Sky: a broken layer at 4,000 feet, overcast at 4,800 feet | from the southwest (220°) at 4 knots | 10+ mi | 4,000 ft | 4,153 ft | 7:53 am MDT (13:53 UTC) |
| ENV Wendover, UT | 109 nm out, 10 nm west of the line | VFR Sky: scattered clouds at 5,000 feet, a broken layer at 7,500 feet, overcast at 10,000 feet | from the north (360°) at 7 knots | 10+ mi | 7,500 ft | 4,236 ft | 13:56 UTC |
| MLF Milford, UT | 248 nm out, 5 nm south of the line | VFR Sky: a few clouds at 12,000 feet | from the south-southwest (200°) at 8 knots | 10+ mi | none | 5,042 ft | 13:52 UTC |
| CDC Cedar City, UT | 298 nm out, 18 nm west of the line | VFR Sky: overcast at 9,500 feet | from the south-southwest (200°) at 16 knots, gusting to 23 | 10+ mi | 9,500 ft | 5,622 ft | 13:53 UTC |
| KNB Kanab, UT | 337 nm out, 4 nm south of the line | reported, no category | from the north (360°) at 0 knots | 10+ mi | none | 4,867 ft | 13:55 UTC |
| GCN Grand Canyon, AZ | 407 nm out, 0 nm southwest of the line, tower | IFR Sky: a broken layer at 600 feet, overcast at 1,100 feet Weather: mist | from the south-southwest (210°) at 11 knots, gusting to 17 | 4 mi | 600 ft | 6,608 ft | 13:54 UTC |
| FLG Flagstaff, AZ | 456 nm out, 10 nm east of the line, tower | marginal VFR Sky: a broken layer at 1,200 feet, a broken layer at 2,300 feet, overcast at 4,000 feet Weather: light rain | from the south-southwest (210°) at 16 knots, gusting to 32 | 10+ mi | 1,200 ft | 7,014 ft | 13:57 UTC |
| IWA Phoenix, AZ | 565 nm out, 17 nm west of the line, tower | VFR Sky: overcast at 9,000 feet | from the south-southeast (160°) at 4 knots | 10+ mi | 9,000 ft | 1,384 ft | 13:52 UTC |
| AVQ Marana, AZ | 625 nm out, 9 nm west of the line | VFR Sky: a few clouds at 8,500 feet | from the southwest (220°) at 6 knots | 10+ mi | none | 2,031 ft | 13:55 UTC |
| TUS Tucson, AZ | destination | VFR | from the south (180°) at 7 knots | 10+ mi | none | 2,643 ft | 6:53 am MST (13:53 UTC) |
The highest airport on this list sits at 7,014 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At TUS when you get there the forecast at the estimated arrival, 1:40 pm MST (20:40 UTC)
Wind from the south-southwest at 14 knots, gusting to 22, visibility more than 6 miles, scattered clouds at 6,000 feet, a broken layer at 8,000 feet VFR
The whole forecast for TUS
- From Mon 5:00 am MST (12:00 UTC): wind from the south-southeast at 5 knots, visibility more than 6 miles, a broken layer at 7,000 feet
- From Mon 10:00 am MST (17:00 UTC): wind from the south-southwest at 14 knots, gusting to 22, visibility more than 6 miles, scattered clouds at 6,000 feet, a broken layer at 8,000 feet
- From Mon 4:00 pm MST (23:00 UTC): wind from the southwest at 16 knots, gusting to 25, visibility more than 6 miles, showers nearby, a broken layer at 6,000 feet
- From Mon 11:00 pm MST (06:00 UTC): wind from the west-southwest at 8 knots, visibility more than 6 miles, scattered clouds at 6,000 feet, a broken layer at 8,000 feet
The forecast for TWF, the departure
- From Mon 6:00 am MDT (12:00 UTC): wind from the southwest at 7 knots, visibility 6 miles, light rain, mist, scattered clouds at 1,500 feet, overcast at 2,500 feet
- From Mon 10:00 am MDT (16:00 UTC): wind from the west at 7 knots, visibility 6 miles, light rain showers, mist, scattered clouds at 1,500 feet, a broken layer at 3,500 feet
- From Mon 12:00 pm MDT (18:00 UTC): wind from the west-northwest at 6 knots, visibility more than 6 miles, showers nearby, scattered clouds at 4,000 feet, overcast at 8,000 feet
- From Mon 8:00 pm MDT (02:00 UTC): wind from the west-southwest at 8 knots, visibility more than 6 miles, showers nearby, overcast at 4,000 feet
- From Tue 1:00 am MDT (07:00 UTC): wind from the west-southwest at 11 knots, gusting to 20, visibility 6 miles, light rain showers, mist, scattered clouds at 1,500 feet, overcast 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 TWF 6:59 pm MDT (00:59 UTC), at TUS 5:53 pm MST (00:53 UTC) (civil twilight ends 6:18 pm MST (01:18 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, Tucson International.