Sacramento Mather Airport to Boise Air Trml/Gowen Field MHR → BOI
378 nautical miles (435 statute miles) northeast on a straight line, true course 036°, about 023° magnetic at the departure end (variation 13E). At 120 knots that is 2 h 16 min at the quickest height in today's winds (34,000 ft, a 47-knot tailwind), arriving about 1:33 am MDT (07:33 UTC), after sunset at the destination. Right now MHR is VFR, wind from the southwest (230°) at 7 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: 132 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 TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the first 169 nm of the route.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the last 80 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Near the route, at the destination end.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Near the route, at the destination end.
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 MHR.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
No pilot reports within 50 nautical miles of the line in the last three hours.
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 4 forecast points nearest it (SAC, RNO, 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 |
|---|---|---|---|---|---|---|
| 5,500 ft | 350° at 6 kt | +4 kt | 2 °C | 116 kt | 3 h 16 min | 2:33 am MDT (08:33 UTC) |
| 7,500 ft | 330° at 7 kt | +2 kt | 0 °C | 118 kt | 3 h 12 min | 2:29 am MDT (08:29 UTC) |
| 9,500 ft | 300° at 7 kt | −1 kt | -3 °C | 121 kt | 3 h 07 min | 2:24 am MDT (08:24 UTC) |
| 11,500 ft | 240° at 12 kt | −12 kt | -7 °C | 132 kt | 2 h 52 min | 2:09 am MDT (08:09 UTC) |
| 13,500 ft | 220° at 19 kt | −19 kt | -11 °C | 139 kt | 2 h 43 min | 2:00 am MDT (08:00 UTC) |
| 15,500 ft | 220° at 26 kt | −26 kt | -14 °C | 146 kt | 2 h 35 min | 1:52 am MDT (07:52 UTC) |
| 17,500 ft | 210° at 32 kt | −32 kt | -17 °C | 152 kt | 2 h 29 min | 1:46 am MDT (07:46 UTC) |
| 18,000 ft FL180 | 210° at 34 kt | −34 kt | -18 °C | 154 kt | 2 h 27 min | 1:44 am MDT (07:44 UTC) |
| 24,000 ft FL240 | 210° at 37 kt | −37 kt | -26 °C | 157 kt | 2 h 24 min | 1:41 am MDT (07:41 UTC) |
| 30,000 ft FL300 | 220° at 42 kt | −42 kt | -30 °C | 162 kt | 2 h 20 min | 1:37 am MDT (07:37 UTC) |
| 34,000 ft FL340 | 230° at 48 kt | −47 kt | -33 °C | 167 kt | 2 h 16 min | 1:33 am MDT (07:33 UTC) |
| 39,000 ft FL390 | 230° at 42 kt | −41 kt | -41 °C | 161 kt | 2 h 21 min | 1:38 am MDT (07:38 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| SAC | used from 0 nm out; 33 nm from the line | 110/6 | L/V 4° | 010/11 -2° | 350/11 -7° | 340/24 -16° | 360/44 -23° | 330/24 -30° | 270/21 -35° | 230/23 -43° |
| RNO | used from 50 nm out; 27 nm from the line | 010/9 | 320/10 -2° | 210/23 -9° | 210/34 -19° | 220/36 -25° | 230/31 -29° | 230/41 -33° | 230/38 -42° | |
| BAM | used from 199 nm out; 89 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 299 nm out; 55 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 |
|---|---|---|---|---|---|---|---|
| MHR Sacramento, CA | departure | VFR | from the southwest (230°) at 7 knots | 10+ mi | none | 98 ft | 8:15 pm PDT (03:15 UTC) |
| AUN Auburn, CA | 30 nm out, 7 nm west of the line | VFR | calm | 10+ mi | none | 1,538 ft | 04:55 UTC |
| TRK Truckee, CA | 70 nm out, 17 nm southeast of the line, tower | VFR | from the southwest (230°) at 9 knots | 10+ mi | none | 5,904 ft | 04:55 UTC |
| RNO Reno, NV | 90 nm out, 24 nm southeast of the line, tower | VFR Sky: a few clouds at 8,000 feet | variable at 4 knots | 10+ mi | none | 4,414 ft | 04:55 UTC |
| REO Rome, OR | 289 nm out, 20 nm northwest of the line | reported, no category | from the north-northeast (020°) at 8 knots | none | 4,053 ft | 04:52 UTC | |
| 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 5,904 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, 1:33 am MDT (07:33 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 MHR, the departure
- From Sun 5:00 pm PDT (00:00 UTC): wind from the southwest at 7 knots, visibility more than 6 miles, clear skies
- From Sun 10:00 pm PDT (05:00 UTC): wind from the south-southeast at 7 knots, visibility more than 6 miles, clear skies
- From Mon 6:00 am PDT (13:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 25,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/3475 BEALE AFB, CA, Sunday, March 8, 2026 through Sunday, November 1, 2026 Local 16 nm from the route, 20 nm along the route · security · until 1 November · ZOA
Daylight
Sunset at MHR 6:31 pm PDT (01:31 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: Sacramento Mather Airport, Boise Air Trml/Gowen Field.