General Mitchell International to Boise Air Trml/Gowen Field MKE → BOI
1,233 nautical miles (1,419 statute miles) west on a straight line, true course 281°, about 285° magnetic at the departure end (variation 4W). At 120 knots that is 11 h 38 min at the quickest height in today's winds (4,500 ft, a 14-knot headwind), arriving about 4:39 pm MDT (22:39 UTC). Right now MKE is VFR, wind from the southwest (230°) at 9 knots; BOI is VFR, wind from the west-northwest (290°) 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: 2 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 2W: 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, 189 nm along 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 route from 368 to 1193 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, 746 nm along the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 815 to 1193 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 815 to 1173 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 MKE.
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 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 10 forecast points nearest it (GRB, DBQ, LSE, MCW, FSD, PIR, RAP, LND, PIH, 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 |
|---|---|---|---|---|---|---|
| 4,500 ft | 250° at 17 kt | +14 kt | 13 °C | 106 kt | 11 h 38 min | 4:39 pm MDT (22:39 UTC) |
| 6,500 ft | 240° at 17 kt | +14 kt | 15 °C | 106 kt | 11 h 38 min | 4:39 pm MDT (22:39 UTC) |
| 8,500 ft | 230° at 18 kt | +14 kt | 9 °C | 106 kt | 11 h 38 min | 4:39 pm MDT (22:39 UTC) |
| 10,500 ft | 230° at 22 kt | +17 kt | 5 °C | 103 kt | 11 h 58 min | 4:59 pm MDT (22:59 UTC) |
| 12,500 ft | 230° at 25 kt | +19 kt | 1 °C | 101 kt | 12 h 12 min | 5:13 pm MDT (23:13 UTC) |
| 14,500 ft | 230° at 28 kt | +20 kt | -4 °C | 100 kt | 12 h 20 min | 5:21 pm MDT (23:21 UTC) |
| 16,500 ft | 220° at 30 kt | +21 kt | -8 °C | 99 kt | 12 h 27 min | 5:28 pm MDT (23:28 UTC) |
| 18,000 ft FL180 | 220° at 32 kt | +22 kt | -12 °C | 98 kt | 12 h 35 min | 5:36 pm MDT (23:36 UTC) |
| 24,000 ft FL240 | 220° at 37 kt | +26 kt | -23 °C | 94 kt | 13 h 07 min | 6:08 pm MDT (00:08 UTC) |
| 30,000 ft FL300 | 230° at 43 kt | +35 kt | -34 °C | 85 kt | 14 h 30 min | 7:31 pm MDT (01:31 UTC) |
| 34,000 ft FL340 | 240° at 47 kt | +42 kt | -37 °C | 78 kt | 15 h 48 min | 8:49 pm MDT (02:49 UTC) |
| 39,000 ft FL390 | 250° at 50 kt | +48 kt | -45 °C | 72 kt | 17 h 08 min | 10:09 pm MDT (04:09 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| GRB | used from 0 nm out; 89 nm from the line | 250/32 | 250/22 17° | 240/18 8° | 280/21 6° | 280/34 -11° | 280/35 -21° | 280/39 -37° | 270/52 -45° | 290/60 -49° |
| DBQ | used from 50 nm out; 69 nm from the line | 250/27 | 260/23 17° | 240/26 10° | 260/30 4° | 280/26 -9° | 280/36 -21° | 270/41 -36° | 280/52 -41° | 290/67 -48° |
| LSE | used from 99 nm out; 42 nm from the line | 250/25 | 240/21 17° | 240/28 11° | 250/28 5° | 280/24 -10° | 280/31 -21° | 260/35 -37° | 270/45 -43° | 280/59 -47° |
| MCW | used from 199 nm out; 30 nm from the line | 250/36 | 250/24 19° | 240/26 11° | 250/30 5° | 270/22 -9° | 260/30 -21° | 260/31 -36° | 280/53 -38° | 280/66 -48° |
| FSD | used from 298 nm out; 67 nm from the line | 210/20 | 230/23 21° | 220/25 14° | 230/30 5° | 230/26 -9° | 240/30 -21° | 270/33 -36° | 260/47 -37° | 270/58 -47° |
| PIR | used from 448 nm out; 74 nm from the line | 230/15 15° | 220/22 14° | 220/24 6° | 200/32 -10° | 210/48 -22° | 240/45 -33° | 240/43 -37° | 250/55 -46° | |
| RAP | used from 597 nm out; 42 nm from the line | 250/28 16° | 260/31 10° | 240/25 4° | 210/35 -10° | 200/45 -23° | 230/47 -31° | 230/47 -36° | 230/51 -46° | |
| LND | used from 796 nm out; 118 nm from the line | 240/10 3° | 240/30 0° | 220/42 -13° | 230/52 -23° | 220/54 -33° | 220/52 -36° | 220/53 -44° | ||
| PIH | used from 994 nm out; 84 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° | |
| BOI | used from 1144 nm out; 65 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° |
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 |
|---|---|---|---|---|---|---|---|
| MKE Milwaukee, WI | departure | VFR Sky: a few clouds at 18,000 feet, a broken layer at 24,000 feet | from the southwest (230°) at 9 knots | 10+ mi | 24,000 ft | 728 ft | 5:52 am CDT (10:52 UTC) |
| UES Waukesha, WI | 20 nm out, 5 nm east of the line, tower | VFR | from the south-southwest (200°) at 8 knots | 10+ mi | none | 911 ft | 10:45 UTC |
| RST Rochester, MN | 209 nm out, 22 nm north of the line, tower | VFR | from the south (180°) at 10 knots | 9 mi | none | 1,317 ft | 10:54 UTC |
| FRM Fairmont, MN | 288 nm out, 5 nm south of the line | VFR | calm | 10+ mi | none | 1,161 ft | 10:56 UTC |
| FSD Sioux Falls, SD | 388 nm out, 19 nm south of the line, tower | VFR Sky: a few clouds at 10,000 feet, a few clouds at 25,000 feet | from the north-northeast (030°) at 3 knots | 10+ mi | none | 1,430 ft | 10:56 UTC |
| PHP Philip, SD | 597 nm out, 6 nm southwest of the line | low IFR Sky: a broken layer at 400 feet, a broken layer at 1,000 feet, overcast at 1,500 feet | from the east (090°) at 8 knots | 10+ mi | 400 ft | 2,209 ft | 10:55 UTC |
| RAP Rapid City, SD | 666 nm out, 8 nm southeast of the line, tower | low IFR Sky: sky obscured at 200 feet Weather: fog | from the east-southeast (120°) at 7 knots | 0.25 mi | 200 ft | 3,203 ft | 10:52 UTC |
| GCC Gillette, WY | 766 nm out, 12 nm north of the line | IFR Sky: overcast at 700 feet Weather: mist | from the west-northwest (290°) at 17 knots, gusting to 24 | 6 mi | 700 ft | 4,365 ft | 10:53 UTC |
| WRL Worland, WY | 875 nm out, 9 nm south of the line | VFR Sky: scattered clouds at 1,400 feet, a broken layer at 3,100 feet, overcast at 3,900 feet | from the north (360°) at 4 knots | 10+ mi | 3,100 ft | 4,251 ft | 10:53 UTC |
| JAC Jackson, WY | 994 nm out, 23 nm south of the line, tower | VFR Sky: scattered clouds at 11,000 feet | from the east-northeast (070°) at 3 knots | 10+ mi | none | 6,451 ft | 10:56 UTC |
| SUN Hailey, ID | 1154 nm out, 15 nm south of the line, tower | VFR Sky: scattered clouds at 600 feet, a broken layer at 3,700 feet, overcast at 4,300 feet Weather: light rain | from the south (170°) at 4 knots | 7 mi | 3,700 ft | 5,319 ft | 10:55 UTC |
| BOI Boise, ID | destination | VFR Sky: scattered clouds at 9,000 feet | from the west-northwest (290°) at 4 knots | 10+ mi | none | 2,871 ft | 4:53 am MDT (10:53 UTC) |
The highest airport on this list sits at 6,451 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, 4:39 pm MDT (22:39 UTC)
Wind from the northwest at 10 knots, visibility more than 6 miles, a broken layer at 10,000 feet VFR
The whole forecast for BOI
- 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
The forecast for MKE, the departure
- From Mon 5:00 am CDT (10:00 UTC): wind from the southwest at 12 knots, visibility more than 6 miles, a broken layer at 25,000 feet
- From Mon 10:00 am CDT (15:00 UTC): wind from the southwest at 12 knots, gusting to 20, visibility more than 6 miles, a few clouds at 25,000 feet
- From Mon 9:00 pm CDT (02:00 UTC): wind from the southwest at 7 knots, visibility more than 6 miles, low-level wind shear, scattered clouds at 10,000 feet
- From Tue 3:00 am CDT (08:00 UTC): wind from the west at 10 knots, visibility more than 6 miles, a few clouds at 25,000 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 MKE 6:14 pm CDT (23:14 UTC), at BOI 7:05 pm MDT (01:05 UTC) (civil twilight ends 7:33 pm MDT (01:33 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: General Mitchell International, Boise Air Trml/Gowen Field.