Boise Air Trml/Gowen Field to Frederick W Smith Intl/Memphis Airport BOI → MEM
1,315 nautical miles (1,514 statute miles) east on a straight line, true course 104°, about 091° magnetic at the departure end (variation 13E). At 120 knots that is 7 h 55 min at the quickest height in today's winds (34,000 ft, a 46-knot tailwind), arriving about 1:52 pm CDT (18:52 UTC). Right now BOI is VFR, wind from the west-northwest (290°) at 6 knots; MEM is VFR, wind calm. 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: 213 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 SIERRA 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 40 to 179 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 40 to 428 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 60 to 468 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 339 to 598 nm out.
- AIRMET TANGO 1W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Over the route from 399 to 528 nm out.
- AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 409 to 438 nm out.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the route from 418 to 538 nm out.
- AIRMET TANGO 1W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Near the route, 628 nm along the route.
- AIRMET TANGO 2W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Over the route from 737 to 1146 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 BOI.
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 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 11 forecast points nearest it (BOI, PIH, RKS, DEN, GLD, SLN, ICT, TUL, SGF, LIT, MEM). 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 | 250° at 22 kt | −16 kt | 1 °C | 136 kt | 9 h 40 min | 3:37 pm CDT (20:37 UTC) |
| 7,500 ft | 250° at 17 kt | −13 kt | 13 °C | 133 kt | 9 h 53 min | 3:50 pm CDT (20:50 UTC) |
| 9,500 ft | 240° at 16 kt | −10 kt | 9 °C | 130 kt | 10 h 07 min | 4:04 pm CDT (21:04 UTC) |
| 11,500 ft | 230° at 18 kt | −9 kt | 5 °C | 129 kt | 10 h 12 min | 4:09 pm CDT (21:09 UTC) |
| 13,500 ft | 230° at 23 kt | −10 kt | 0 °C | 130 kt | 10 h 07 min | 4:04 pm CDT (21:04 UTC) |
| 15,500 ft | 230° at 29 kt | −12 kt | -5 °C | 132 kt | 9 h 58 min | 3:55 pm CDT (20:55 UTC) |
| 17,500 ft | 230° at 34 kt | −15 kt | -9 °C | 135 kt | 9 h 44 min | 3:41 pm CDT (20:41 UTC) |
| 18,000 ft FL180 | 230° at 36 kt | −15 kt | -10 °C | 135 kt | 9 h 44 min | 3:41 pm CDT (20:41 UTC) |
| 24,000 ft FL240 | 230° at 41 kt | −18 kt | -22 °C | 138 kt | 9 h 32 min | 3:29 pm CDT (20:29 UTC) |
| 30,000 ft FL300 | 240° at 56 kt | −39 kt | -30 °C | 159 kt | 8 h 16 min | 2:13 pm CDT (19:13 UTC) |
| 34,000 ft FL340 | 250° at 58 kt | −46 kt | -36 °C | 166 kt | 7 h 55 min | 1:52 pm CDT (18:52 UTC) |
| 39,000 ft FL390 | 250° at 51 kt | −40 kt | -47 °C | 160 kt | 8 h 13 min | 2:10 pm CDT (19:10 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| BOI | used from 0 nm out; 25 nm from the line | 320/11 1° | 280/8 -5° | 220/14 -11° | 200/60 -19° | 190/66 -31° | 210/46 -32° | 220/50 -33° | 220/43 -39° | |
| PIH | used from 100 nm out; 39 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° | |
| RKS | used from 249 nm out; 67 nm from the line | 250/9 | 230/21 -1° | 210/43 -14° | 220/59 -23° | 220/55 -32° | 220/53 -35° | 220/48 -44° | ||
| DEN | used from 448 nm out; 101 nm from the line | 270/24 11° | 230/13 5° | 230/48 -8° | 230/46 -20° | 230/63 -30° | 240/78 -36° | 240/78 -48° | ||
| GLD | used from 598 nm out; 80 nm from the line | 260/37 | 260/25 14° | 250/27 8° | 230/36 -8° | 230/49 -21° | 250/71 -30° | 260/82 -36° | 250/73 -48° | |
| SLN | used from 797 nm out; 66 nm from the line | 230/49 | 240/41 22° | 230/26 15° | 220/21 7° | 240/38 -8° | 240/44 -21° | 260/77 -29° | 270/70 -36° | 270/63 -48° |
| ICT | used from 897 nm out; 35 nm from the line | 230/45 | 240/33 21° | 230/23 14° | 230/22 7° | 240/29 -7° | 240/36 -20° | 260/78 -29° | 270/69 -36° | 270/56 -49° |
| TUL | used from 996 nm out; 80 nm from the line | 230/42 | 250/23 17° | 220/16 14° | 240/10 8° | 240/20 -6° | 260/28 -17° | 270/61 -29° | 280/52 -38° | 290/46 -50° |
| SGF | used from 1046 nm out; 48 nm from the line | 230/37 | 260/20 15° | 250/16 13° | 250/15 8° | 260/28 -7° | 250/31 -17° | 280/59 -31° | 280/59 -39° | 290/55 -50° |
| LIT | used from 1196 nm out; 72 nm from the line | 250/22 | 250/25 18° | 240/23 12° | 240/20 7° | 250/17 -6° | 260/25 -17° | 300/45 -29° | 300/49 -40° | 310/43 -51° |
| MEM | used from 1246 nm out; 45 nm from the line | 250/19 | 260/19 17° | 270/20 12° | 270/16 6° | 270/21 -6° | 290/27 -17° | 300/37 -30° | 300/49 -40° | 310/40 -51° |
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: a broken layer at 10,000 feet | from the west-northwest (290°) at 6 knots | 10+ mi | 10,000 ft | 2,871 ft | 3:53 am MDT (09:53 UTC) |
| SUN Hailey, ID | 80 nm out, 18 nm northeast of the line, tower | VFR Sky: scattered clouds at 2,500 feet, a broken layer at 3,600 feet, overcast at 4,300 feet Weather: light rain | calm | 7 mi | 3,600 ft | 5,319 ft | 10:35 UTC |
| PIH Pocatello, ID | 159 nm out, 5 nm northeast of the line, tower | marginal VFR Sky: overcast at 2,800 feet | from the north (360°) at 4 knots | 10+ mi | 2,800 ft | 4,451 ft | 09:53 UTC |
| BPI Big Piney, WY | 269 nm out, 18 nm northeast of the line | VFR Sky: overcast at 11,000 feet | calm | 10+ mi | 11,000 ft | 6,993 ft | 09:53 UTC |
| SAA Saratoga, WY | 438 nm out, 4 nm northwest of the line | reported, no category | from the south-southeast (150°) at 13 knots, gusting to 19 | 10+ mi | none | 7,014 ft | 10:30 UTC |
| CYS Cheyenne, WY | 528 nm out, 18 nm north of the line, tower | VFR | from the west-southwest (240°) at 15 knots, gusting to 29 | 10+ mi | none | 6,159 ft | 09:53 UTC |
| RYA Wray, CO | 658 nm out, 4 nm northeast of the line | no report just now | 3,677 ft | ||||
| HUT Hutchinson, KS | 897 nm out, 22 nm southwest of the line, tower | VFR | from the south (180°) at 9 knots | 10+ mi | none | 1,542 ft | 09:52 UTC |
| CNU Chanute, KS | 1006 nm out, 8 nm northeast of the line | VFR | from the south (190°) at 11 knots | 10+ mi | none | 1,002 ft | 09:52 UTC |
| BBG Branson, MO | 1136 nm out, 1 nm west of the line, tower | VFR | calm | 10+ mi | none | 1,302 ft | 10:35 UTC |
| BVX Batesville, AR | 1226 nm out, 6 nm southwest of the line | VFR | calm | 10+ mi | none | 465 ft | 09:56 UTC |
| MEM Memphis, TN | destination | VFR Sky: a few clouds at 25,000 feet | calm | 10+ mi | none | 340 ft | 4:54 am CDT (09:54 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 MEM when you get there the forecast at the estimated arrival, 1:52 pm CDT (18:52 UTC)
Wind from the west-southwest at 10 knots, gusting to 17, visibility more than 6 miles, clear skies VFR
The whole forecast for MEM
- From Mon 4:00 am CDT (09:00 UTC): wind from the south at 5 knots, visibility more than 6 miles, a few clouds at 25,000 feet
- From Mon 11:00 am CDT (16:00 UTC): wind from the west-southwest at 10 knots, gusting to 17, visibility more than 6 miles, clear skies
- From Mon 7:00 pm CDT (00:00 UTC): wind from the south-southwest at 6 knots, visibility more than 6 miles, clear skies
The forecast for BOI, the departure
- From Mon 12:00 am MDT (06:00 UTC): wind light and variable, visibility more than 6 miles, a broken layer at 8,000 feet
- From Mon 2:00 am MDT (08:00 UTC): wind from the west-northwest at 5 knots, visibility more than 6 miles, scattered clouds at 4,000 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 7:05 pm MDT (01:05 UTC), at MEM 6:29 pm CDT (23:29 UTC) (civil twilight ends 6:54 pm CDT (23:54 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, Frederick W Smith Intl/Memphis Airport.