Boise Air Trml/Gowen Field to Palm Springs International BOI → PSP
585 nautical miles (673 statute miles) south on a straight line, true course 181°, about 168° magnetic at the departure end (variation 13E). At 120 knots that is 5 h 11 min at the quickest height in today's winds (5,500 ft, a 7-knot headwind), arriving about 11:57 pm PDT (06:57 UTC), after sunset at the destination. Right now BOI is VFR, wind from the east-southeast (120°) at 9 knots; PSP is VFR, wind from the northwest (320°) at 8 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: 164 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 5W: thunderstorms (a convective SIGMET) up to 33,000 ft, moving from the southwest at 20 knots, until 8:55 pm MDT (02:55 UTC). Over the route from 178 to 307 nm out.
as issued
WSUS33 KKCI 120055 MKCW WST 120055 CONVECTIVE SIGMET 5W VALID UNTIL 0255Z NV FROM 10NNE BAM-40WSW BVL-60SW ELY-10SE OAL-30WNW OAL-10NNE BAM AREA TS MOV FROM 23020KT. TOPS TO FL330.
- AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the first 565 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the first 396 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 168 to 307 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 258 to 406 nm out.
- AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. Near the route, 416 nm along the route.
- AIRMET SIERRA 6E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 30 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 BOI.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- B38M at 14,000 ft, 24 nm west, 6:13 pm MDT (00:13 UTC): moderate turbulence, light rime icing, 8 °C. 555 nm along the route, 24 nm west of the line.
as filed, and in English
ONT UA /OV ONT053034/TM 0013/FL140/TP B38M/TA 08/TB MODERATE TURBULENCE/IC LIGHT RIME ICE 190 - 170
- Report
- a routine report filed through ONT
- Where
- 34 nm northeast (053°) of ONT
- Time
- 00:13 UTC
- Height
- at 14,000 ft
- Aircraft
- B38M
- Temperature
- 8 °C
- Turbulence
- moderate turbulence
- Icing
- light rime ice at 19,000 ft at 17,000 ft
- CL60 descending, 2 nm southeast, 5:00 pm MDT (23:00 UTC): remarks: + 10 knots on final. At the departure end, 2 nm southeast of the line.
as filed, and in English
BOI UA /OV BOI/TM 2300/FLDURD/TP CL60/RM +/- 10 KTS ON FINAL
- Report
- a routine report filed through BOI
- Where
- over BOI
- Time
- 23:00 UTC
- Height
- during the descent
- Aircraft
- CL60
- Remarks
- + 10 knots on final
- G280 at 41,000 ft, 49 nm east, 5:37 pm MDT (23:37 UTC): light to moderate clear-air turbulence, remarks: ZDVWC-46. 476 nm along the route, 49 nm east of the line.
as filed, and in English
ALS UA /OV LAS190035/TM 2337/FL410/TP G280/TB LGT-MOD CAT/RM ZDVWC-46
- Report
- a routine report filed through ALS
- Where
- 35 nm south (190°) of LAS
- Time
- 23:37 UTC
- Height
- at 41,000 ft
- Aircraft
- G280
- Turbulence
- light to moderate clear-air turbulence
- Remarks
- ZDVWC-46
- A21N at 29,500 ft, 5 nm northeast, 4:50 pm MDT (22:50 UTC): remarks: mountain wave 10-15 kts/zlawc. 515 nm along the route, 5 nm northeast of the line.
as filed, and in English
DAG UA /OV DAG045010/TM 2250/FL295/TP A21N/RM MTN WAVE /- 10-15 KTS/ZLAWC AWC-WEB
- Report
- a routine report filed through DAG
- Where
- 10 nm northeast (045°) of DAG
- Time
- 22:50 UTC
- Height
- at 29,500 ft
- Aircraft
- A21N
- Remarks
- mountain wave 10-15 kts/zlawc
Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 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 6 forecast points nearest it (BOI, BAM, ELY, BIH, LAS, ONT). 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 | 220° at 10 kt | +7 kt | 7 °C | 113 kt | 5 h 11 min | 11:57 pm PDT (06:57 UTC) |
| 7,500 ft | 230° at 12 kt | +9 kt | 4 °C | 111 kt | 5 h 16 min | 12:02 am PDT (07:02 UTC) |
| 9,500 ft | 230° at 16 kt | +11 kt | 2 °C | 109 kt | 5 h 22 min | 12:08 am PDT (07:08 UTC) |
| 11,500 ft | 230° at 23 kt | +15 kt | -2 °C | 105 kt | 5 h 34 min | 12:20 am PDT (07:20 UTC) |
| 13,500 ft | 230° at 28 kt | +20 kt | -6 °C | 100 kt | 5 h 51 min | 12:37 am PDT (07:37 UTC) |
| 15,500 ft | 220° at 33 kt | +25 kt | -10 °C | 95 kt | 6 h 09 min | 12:55 am PDT (07:55 UTC) |
| 17,500 ft | 220° at 38 kt | +30 kt | -14 °C | 90 kt | 6 h 30 min | 1:16 am PDT (08:16 UTC) |
| 18,000 ft FL180 | 220° at 39 kt | +31 kt | -15 °C | 89 kt | 6 h 34 min | 1:20 am PDT (08:20 UTC) |
| 24,000 ft FL240 | 210° at 50 kt | +44 kt | -24 °C | 76 kt | 7 h 42 min | 2:28 am PDT (09:28 UTC) |
| 30,000 ft FL300 | 220° at 64 kt | +53 kt | -29 °C | 67 kt | 8 h 44 min | 3:30 am PDT (10:30 UTC) |
| 34,000 ft FL340 | 220° at 65 kt | +54 kt | -34 °C | 66 kt | 8 h 52 min | 3:38 am PDT (10:38 UTC) |
| 39,000 ft FL390 | 220° at 60 kt | +47 kt | -43 °C | 73 kt | 8 h 01 min | 2:47 am PDT (09:47 UTC) |
Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| BOI | used from 0 nm out; 25 nm from the line | 330/14 4° | 230/5 -2° | 220/20 -7° | 210/37 -20° | 200/59 -26° | 200/67 -34° | 210/73 -35° | 220/62 -41° | |
| BAM | used from 99 nm out; 60 nm from the line | 270/8 4° | 230/27 -4° | 220/49 -18° | 210/52 -26° | 220/77 -29° | 220/71 -33° | 220/63 -43° | ||
| ELY | used from 248 nm out; 73 nm from the line | 210/20 4° | 240/21 -1° | 230/37 -13° | 200/58 -25° | 220/73 -27° | 220/73 -36° | 220/69 -44° | ||
| BIH | used from 347 nm out; 93 nm from the line | L/V | 210/14 6° | 210/20 -2° | 230/26 -14° | 220/32 -24° | 220/63 -27° | 220/56 -35° | 230/50 -44° | |
| LAS | used from 396 nm out; 68 nm from the line | 200/25 11° | 230/22 5° | 240/25 -1° | 220/37 -12° | 220/44 -21° | 210/52 -27° | 210/60 -34° | 220/58 -44° | |
| ONT | used from 495 nm out; 75 nm from the line | 230/11 | 200/17 6° | 230/27 4° | 230/32 -2° | 210/39 -12° | 220/51 -20° | 220/48 -29° | 210/51 -34° | 210/52 -44° |
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 |
|---|---|---|---|---|---|---|---|
| BOI Boise, ID | departure | VFR Sky: scattered clouds at 7,000 feet, overcast at 9,000 feet | from the east-southeast (120°) at 9 knots | 10+ mi | 9,000 ft | 2,871 ft | 6:53 pm MDT (00:53 UTC) |
| EKO Elko, NV | 168 nm out, 24 nm east of the line | VFR Sky: a few clouds at 4,400 feet, scattered clouds at 5,500 feet, scattered clouds at 7,500 feet | from the south (170°) at 14 knots, gusting to 17 | 10+ mi | none | 5,139 ft | 00:56 UTC |
| BTY Beatty, NV | 406 nm out, 18 nm west of the line | no report just now | 3,169 ft | ||||
| DAG Daggett, CA | 525 nm out, 15 nm west of the line | VFR | from the southwest (230°) at 23 knots, gusting to 31 | 10+ mi | none | 1,930 ft | 00:50 UTC |
| PSP Palm Springs, CA | destination | VFR Sky: a few clouds at 11,000 feet | from the northwest (320°) at 8 knots | 10+ mi | none | 476 ft | 5:53 pm PDT (00:53 UTC) |
The highest airport on this list sits at 5,139 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At PSP when you get there the forecast at the estimated arrival, 11:57 pm PDT (06:57 UTC)
Wind light and variable, visibility more than 6 miles, a few clouds at 10,000 feet VFR
The whole forecast for PSP
- From Sun 5:00 pm PDT (00:00 UTC): wind from the north-northwest at 11 knots, gusting to 18, visibility more than 6 miles, a few clouds at 5,000 feet, scattered clouds at 10,000 feet
- From Sun 11:00 pm PDT (06:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 10,000 feet
- From Mon 2:00 pm PDT (21:00 UTC): wind from the northwest at 11 knots, gusting to 18, visibility more than 6 miles, a few clouds at 10,000 feet
The forecast for BOI, the departure
- 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
Temporary flight restrictions on the line or within 25 nm of it
- 6/8887 Indio, CA, Sunday, October 11, 2026 through Monday, October 12, 2026 Local 15 nm from the route, at the destination end · security · until 12 October · ZLA
Daylight
Sunset at BOI 7:06 pm MDT (01:06 UTC), at PSP 6:16 pm PDT (01:16 UTC) (civil twilight ends 6:41 pm PDT (01:41 UTC)). At 120 knots the arrival at PSP is before sunrise there (6:48 am PDT (13:48 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: Boise Air Trml/Gowen Field, Palm Springs International.