Boise Air Trml/Gowen Field to Friedman Memorial BOI → SUN
84 nautical miles (97 statute miles) east on a straight line, true course 092°, about 079° magnetic at the departure end (variation 13E). At 120 knots that is 32 min at the quickest height in today's winds (39,000 ft, a 38-knot tailwind), arriving about 7:08 pm MDT (01:08 UTC), after sunset at the destination. Right now BOI is VFR, wind calm; SUN is marginal VFR, wind from the east-southeast (120°) at 5 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: 12 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 3C: moderate icing up to 22,000 ft. Over the whole route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the whole route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 65 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). Over the last 37 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
- 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
- E550 at 21,000 ft, 0 nm northwest, 5:27 pm MDT (23:27 UTC): light turbulence, a few clouds above 7,000 ft, remarks: during the climb zlc. At the destination end, 0 nm northwest of the line.
as filed, and in English
SUN UA /OV SUN/TM 2327/FL210/TP E550/SK FEW070/TB CONS LGT/RM DURC /ZLC
- Report
- a routine report filed through SUN
- Where
- over SUN
- Time
- 23:27 UTC
- Height
- at 21,000 ft
- Aircraft
- E550
- Sky
- a few clouds from 7,000 ft
- Turbulence
- continuous light
- Remarks
- during the climb zlc
- C68A at 31,000 ft, 40 nm east, 3:49 pm MDT (21:49 UTC): a routine report with nothing remarked on. At the destination end, 40 nm east of the line.
as filed, and in English
SUN UA /OV HLE060040/TM 2149/FL310/TP C68A/SK BASE074-TOP300 /ZLC
- Report
- a routine report filed through SUN
- Where
- 40 nm northeast (060°) of HLE
- Time
- 21:49 UTC
- Height
- at 31,000 ft
- Aircraft
- C68A
- Sky
- BASE074-TOP300; zlc
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 1 forecast point nearest it (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 |
|---|---|---|---|---|---|---|
| 5,500 ft | 330° at 14 kt | −7 kt | 4 °C | 127 kt | 40 min | 7:16 pm MDT (01:16 UTC) |
| 7,500 ft | 310° at 7 kt | −6 kt | 1 °C | 126 kt | 40 min | 7:16 pm MDT (01:16 UTC) |
| 9,500 ft | 230° at 7 kt | −5 kt | -3 °C | 125 kt | 40 min | 7:16 pm MDT (01:16 UTC) |
| 11,500 ft | 220° at 17 kt | −11 kt | -6 °C | 131 kt | 38 min | 7:14 pm MDT (01:14 UTC) |
| 13,500 ft | 220° at 24 kt | −14 kt | -10 °C | 134 kt | 38 min | 7:14 pm MDT (01:14 UTC) |
| 15,500 ft | 210° at 30 kt | −15 kt | -15 °C | 135 kt | 37 min | 7:13 pm MDT (01:13 UTC) |
| 17,500 ft | 210° at 36 kt | −17 kt | -19 °C | 137 kt | 37 min | 7:13 pm MDT (01:13 UTC) |
| 18,000 ft FL180 | 210° at 37 kt | −17 kt | -20 °C | 137 kt | 37 min | 7:13 pm MDT (01:13 UTC) |
| 24,000 ft FL240 | 200° at 59 kt | −18 kt | -26 °C | 138 kt | 37 min | 7:13 pm MDT (01:13 UTC) |
| 30,000 ft FL300 | 200° at 67 kt | −21 kt | -34 °C | 141 kt | 36 min | 7:12 pm MDT (01:12 UTC) |
| 34,000 ft FL340 | 210° at 73 kt | −34 kt | -35 °C | 154 kt | 33 min | 7:09 pm MDT (01:09 UTC) |
| 39,000 ft FL390 | 220° at 62 kt | −38 kt | -41 °C | 158 kt | 32 min | 7:08 pm MDT (01:08 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; 23 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° |
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: overcast at 4,200 feet Weather: light rain | calm | 10+ mi | 4,200 ft | 2,871 ft | 5:53 pm MDT (23:53 UTC) |
| SUN Hailey, ID | destination | marginal VFR Sky: scattered clouds at 300 feet, a broken layer at 1,300 feet, overcast at 2,200 feet Weather: light rain | from the east-southeast (120°) at 5 knots | 7 mi | 1,300 ft | 5,319 ft | 5:47 pm MDT (23:47 UTC) |
The highest airport on this list sits at 5,319 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At SUN when you get there the forecast at the estimated arrival, 7:08 pm MDT (01:08 UTC)
Wind from the south-southeast at 6 knots, visibility 6 miles, light rain showers, mist, overcast at 1,500 feet marginal VFR
The whole forecast for SUN
- From Sun 6:00 pm MDT (00:00 UTC): wind from the south-southeast at 6 knots, visibility 6 miles, light rain showers, mist, overcast at 1,500 feet
- From Sun 8:00 pm MDT (02:00 UTC): wind from the west-northwest at 6 knots, visibility more than 6 miles, showers nearby, scattered clouds at 1,000 feet, a broken layer at 2,500 feet
- From Mon 4:00 am MDT (10:00 UTC): wind light and variable, visibility more than 6 miles, light rain showers, scattered clouds at 1,500 feet, a broken layer at 2,500 feet
- From Mon 2:00 pm MDT (20:00 UTC): wind from the southeast at 6 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, a broken layer at 4,000 feet
The forecast for BOI, the departure
- From Sun 6:00 pm MDT (00:00 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 6:00 pm MDT (00:00 UTC) and 10:00 pm MDT (04:00 UTC): 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
No temporary flight restriction on or near this route right now.
Daylight
Sunset at BOI 7:06 pm MDT (01:06 UTC), at SUN 6:59 pm MDT (00:59 UTC) (civil twilight ends 7:27 pm MDT (01:27 UTC)). At 120 knots the arrival at SUN is after sunset there (7:00 pm MDT (01:00 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, Friedman Memorial.