Phoenix Sky Harbor International to Boise Air Trml/Gowen Field PHX → BOI
639 nautical miles (736 statute miles) north on a straight line, true course 343°, about 331° magnetic at the departure end (variation 12E). At 120 knots that is 3 h 58 min at the quickest height in today's winds (30,000 ft, a 41-knot tailwind), arriving about 3:15 am MDT (09:15 UTC), after sunset at the destination. Right now PHX is VFR, wind from the east (080°) at 6 knots; BOI is VFR, wind from the south (190°) at 4 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: 4,672 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 W14W: thunderstorms (a convective SIGMET) up to 28,000 ft, moving from the southwest at 20 knots, until 11:55 pm MST (06:55 UTC). Over the route from 440 to 480 nm out.
as issued
WSUS33 KKCI 120455 MKCW WST 120455 CONVECTIVE SIGMET 14W VALID UNTIL 0655Z NV FROM 40NW BVL-20WNW ELY-20SSE OAL-40WNW OAL-50NE BAM-40NW BVL AREA TS MOV FROM 24020KT. TOPS TO FL280.
- AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft. Over the first 160 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 20 to 579 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 70 to 420 nm out.
- 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 150 to 190 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 170 to 579 nm out.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the last 130 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 PHX.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- B737 at 37,000 ft, 43 nm southwest, 8:20 pm MST (03:20 UTC): scattered clouds, -41 °C, wind 220° at 89 knots, remarks: produced by skypath. At the departure end, 43 nm southwest of the line.
as filed, and in English
GYR UA /OV GBN112009 /TM 0320 /FL370 /TP B737 /SK FEW-SCT /TA M41 /WV 22089KT /RM PRODUCED BY SKYPATH
- Report
- a routine report filed through GYR
- Where
- 9 nm east (112°) of GBN
- Time
- 03:20 UTC
- Height
- at 37,000 ft
- Aircraft
- B737
- Sky
- few-sct
- Temperature
- −41 °C
- Wind
- from 220° at 89 knots
- Remarks
- produced by skypath
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 6 forecast points nearest it (PHX, PRC, BCE, ELY, BAM, BOI). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 8,500 ft | 210° at 20 kt | −14 kt | 2 °C | 134 kt | 4 h 46 min | 4:03 am MDT (10:03 UTC) |
| 10,500 ft | 210° at 23 kt | −14 kt | -1 °C | 134 kt | 4 h 46 min | 4:03 am MDT (10:03 UTC) |
| 12,500 ft | 210° at 26 kt | −16 kt | -4 °C | 136 kt | 4 h 42 min | 3:59 am MDT (09:59 UTC) |
| 14,500 ft | 210° at 34 kt | −22 kt | -7 °C | 142 kt | 4 h 30 min | 3:47 am MDT (09:47 UTC) |
| 16,500 ft | 210° at 42 kt | −27 kt | -11 °C | 147 kt | 4 h 21 min | 3:38 am MDT (09:38 UTC) |
| 18,000 ft FL180 | 210° at 48 kt | −31 kt | -14 °C | 151 kt | 4 h 14 min | 3:31 am MDT (09:31 UTC) |
| 24,000 ft FL240 | 210° at 59 kt | −36 kt | -24 °C | 156 kt | 4 h 06 min | 3:23 am MDT (09:23 UTC) |
| 30,000 ft FL300 | 220° at 70 kt | −41 kt | -29 °C | 161 kt | 3 h 58 min | 3:15 am MDT (09:15 UTC) |
| 34,000 ft FL340 | 220° at 71 kt | −36 kt | -34 °C | 156 kt | 4 h 06 min | 3:23 am MDT (09:23 UTC) |
| 39,000 ft FL390 | 230° at 61 kt | −28 kt | -43 °C | 148 kt | 4 h 19 min | 3:36 am MDT (09:36 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| PHX | used from 0 nm out; 25 nm from the line | 150/5 | 200/21 12° | 200/27 6° | 200/35 3° | 220/58 -8° | 220/69 -19° | 220/87 -26° | 230/93 -35° | 230/79 -47° |
| PRC | used from 50 nm out; 2 nm from the line | 210/25 5° | 200/30 1° | 220/55 -10° | 220/61 -21° | 220/84 -28° | 230/90 -34° | 230/73 -45° | ||
| BCE | used from 200 nm out; 71 nm from the line | 220/27 -1° | 210/40 -13° | 220/54 -21° | 220/64 -30° | 220/64 -34° | 220/52 -44° | |||
| ELY | used from 300 nm out; 58 nm from the line | 200/39 3° | 210/27 -2° | 210/45 -15° | 220/56 -24° | 210/60 -28° | 210/63 -34° | 220/61 -43° | ||
| BAM | used from 450 nm out; 87 nm from the line | 310/7 0° | 270/19 -7° | 200/38 -17° | 190/49 -28° | 220/69 -29° | 220/63 -33° | 230/48 -41° | ||
| BOI | used from 549 nm out; 65 nm from the line | 300/7 2° | 280/5 -4° | 210/16 -9° | 210/60 -20° | 210/75 -29° | 210/63 -32° | 220/64 -32° | 220/54 -39° |
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 |
|---|---|---|---|---|---|---|---|
| PHX Phoenix, AZ | departure | VFR Sky: a few clouds at 5,000 feet, scattered clouds at 7,000 feet, a broken layer at 9,500 feet | from the east (080°) at 6 knots | 10+ mi | 9,500 ft | 1,134 ft | 9:51 pm MST (04:51 UTC) |
| DVT Phoenix, AZ | 20 nm out, 4 nm southeast of the line, tower | VFR Sky: a few clouds at 4,300 feet, a broken layer at 5,000 feet, overcast at 8,000 feet | from the east (090°) at 3 knots | 10+ mi | 5,000 ft | 1,478 ft | 04:53 UTC |
| PRC Prescott, AZ | 80 nm out, 4 nm southeast of the line, tower | VFR Sky: a few clouds at 3,600 feet, a broken layer at 5,500 feet, overcast at 9,500 feet | from the south-southwest (200°) at 7 knots | 10+ mi | 5,500 ft | 5,045 ft | 04:53 UTC |
| SGU St George, UT | 230 nm out, 7 nm southwest of the line | VFR Sky: a few clouds at 4,500 feet, scattered clouds at 5,500 feet, overcast at 12,000 feet | from the south-southeast (160°) at 7 knots | 10+ mi | 12,000 ft | 2,883 ft | 04:56 UTC |
| CDC Cedar City, UT | 260 nm out, 24 nm east of the line | VFR Sky: a broken layer at 9,000 feet | from the south-southwest (200°) at 15 knots | 10+ mi | 9,000 ft | 5,622 ft | 04:53 UTC |
| ELY Ely, NV | 380 nm out, 24 nm southwest of the line | VFR Sky: a broken layer at 4,300 feet, a broken layer at 5,000 feet, overcast at 6,500 feet | from the south-southeast (160°) at 12 knots, gusting to 21 | 10+ mi | 4,300 ft | 6,259 ft | 04:53 UTC |
| LWL Wells, NV | 480 nm out, 7 nm northeast of the line | no report just now | 5,769 ft | ||||
| BOI Boise, ID | destination | VFR Sky: overcast at 8,000 feet | from the south (190°) at 4 knots | 10+ mi | 8,000 ft | 2,871 ft | 10:53 pm MDT (04:53 UTC) |
The highest airport on this list sits at 6,259 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At BOI when you get there the forecast at the estimated arrival, 3:15 am MDT (09:15 UTC)
Wind from the west-northwest at 5 knots, visibility more than 6 miles, a few clouds at 5,000 feet, a broken layer at 8,000 feet VFR
The whole forecast for BOI
- From Sun 7:00 pm MDT (01:00 UTC): wind from the northwest at 11 knots, visibility more than 6 miles, showers nearby, scattered clouds at 5,000 feet, overcast at 7,000 feet
- At times between Sun 7:00 pm MDT (01:00 UTC) and 10:00 pm MDT (04:00 UTC): wind variable at 10 knots, light rain showers, overcast at 5,000 feet
- From Mon 12:00 am MDT (06:00 UTC): wind from the west-northwest at 5 knots, visibility more than 6 miles, a few clouds at 5,000 feet, a broken layer at 8,000 feet
- From Mon 12:00 pm MDT (18:00 UTC): wind from the northwest at 10 knots, visibility more than 6 miles, a broken layer at 10,000 feet
The forecast for PHX, the departure
- From Sun 8:00 pm MST (03:00 UTC): wind from the west-northwest at 6 knots, visibility more than 6 miles, scattered clouds at 6,000 feet, a broken layer at 7,000 feet
- From Sun 11:00 pm MST (06:00 UTC): wind from the south-southeast at 11 knots, visibility more than 6 miles, a few clouds at 4,000 feet, scattered clouds at 7,000 feet
- From Mon 2:00 am MST (09:00 UTC): wind from the east-southeast at 10 knots, visibility more than 6 miles, a few clouds at 4,000 feet, scattered clouds at 7,000 feet
- From Mon 9:00 am MST (16:00 UTC): wind from the south at 11 knots, gusting to 20, visibility more than 6 miles, scattered clouds at 4,000 feet, a broken layer at 7,000 feet
- From Mon 1:00 pm MST (20:00 UTC): wind from the west-southwest at 14 knots, gusting to 22, visibility more than 6 miles, showers nearby, scattered clouds at 5,000 feet, a broken layer at 7,000 feet
- From Mon 7:00 pm MST (02:00 UTC): wind from the west-southwest at 9 knots, visibility more than 6 miles, showers nearby, scattered clouds at 5,000 feet, a broken layer at 7,000 feet
- From Mon 10:00 pm MST (05:00 UTC): wind from the east-southeast at 7 knots, visibility more than 6 miles, showers nearby, scattered clouds at 5,000 feet, a broken layer at 7,000 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 PHX 5:58 pm MST (00:58 UTC), at BOI 7:06 pm MDT (01:06 UTC) (civil twilight ends 7:35 pm MDT (01:35 UTC)). At 120 knots the arrival at BOI is before sunrise there (7:55 am MDT (13:55 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: Phoenix Sky Harbor International, Boise Air Trml/Gowen Field.