Abraham Lincoln Capital Airport to Missoula Montana Airport SPI → MSO
1,141 nautical miles (1,313 statute miles) northwest on a straight line, true course 300°, about 301° magnetic at the departure end (variation 1W). At 120 knots that is 10 h 34 min at the quickest height in today's winds (8,500 ft, a 12-knot headwind), arriving about 1:38 pm MDT (19:38 UTC). 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: 1 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 C14C: thunderstorms (a convective SIGMET) up to 35,000 ft, moving from the southwest at 40 knots, until 4:55 am CDT (09:55 UTC). Over the route from 615 to 645 nm out.
as issued
WSUS32 KKCI 120755 MKCC WST 120755 CONVECTIVE SIGMET 14C VALID UNTIL 0955Z SD ND FROM 50SE DIK-50ENE DPR-40ENE RAP-50NNW RAP-50SE DIK AREA TS MOV FROM 22040KT. TOPS TO FL350.
- 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 69 to 446 nm out.
- 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 714 nm of the route.
- 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 675 to 734 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 744 to 893 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 268 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 18,000 ft. Over the last 238 nm of the route.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 50 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 SPI.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
Not fetched just now.
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 12 forecast points nearest it (SPI, BRL, DSM, OMA, FSD, ONL, PIR, RAP, MLS, BIL, GTF, GPI). 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 20 kt | +15 kt | 12 °C | 105 kt | 10 h 52 min | 1:56 pm MDT (19:56 UTC) |
| 6,500 ft | 250° at 18 kt | +13 kt | 14 °C | 107 kt | 10 h 40 min | 1:44 pm MDT (19:44 UTC) |
| 8,500 ft | 250° at 18 kt | +12 kt | 11 °C | 108 kt | 10 h 34 min | 1:38 pm MDT (19:38 UTC) |
| 10,500 ft | 240° at 20 kt | +12 kt | 4 °C | 108 kt | 10 h 34 min | 1:38 pm MDT (19:38 UTC) |
| 12,500 ft | 240° at 21 kt | +12 kt | 1 °C | 108 kt | 10 h 34 min | 1:38 pm MDT (19:38 UTC) |
| 14,500 ft | 230° at 23 kt | +12 kt | -3 °C | 108 kt | 10 h 34 min | 1:38 pm MDT (19:38 UTC) |
| 16,500 ft | 230° at 24 kt | +12 kt | -7 °C | 108 kt | 10 h 34 min | 1:38 pm MDT (19:38 UTC) |
| 18,000 ft FL180 | 230° at 25 kt | +12 kt | -10 °C | 108 kt | 10 h 34 min | 1:38 pm MDT (19:38 UTC) |
| 24,000 ft FL240 | 230° at 37 kt | +16 kt | -23 °C | 104 kt | 10 h 58 min | 2:02 pm MDT (20:02 UTC) |
| 30,000 ft FL300 | 240° at 44 kt | +27 kt | -34 °C | 93 kt | 12 h 16 min | 3:20 pm MDT (21:20 UTC) |
| 34,000 ft FL340 | 240° at 50 kt | +33 kt | -38 °C | 87 kt | 13 h 07 min | 4:11 pm MDT (22:11 UTC) |
| 39,000 ft FL390 | 250° at 54 kt | +39 kt | -46 °C | 81 kt | 14 h 05 min | 5:09 pm MDT (23:09 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| SPI | used from 0 nm out; 25 nm from the line | 260/28 | 250/22 15° | 250/14 9° | 260/20 6° | 280/27 -7° | 280/34 -19° | 280/48 -32° | 280/59 -41° | 300/60 -49° |
| BRL | used from 50 nm out; 20 nm from the line | 250/32 | 250/19 17° | 260/15 11° | 270/16 3° | 290/23 -7° | 260/42 -20° | 270/52 -34° | 280/63 -39° | 290/64 -48° |
| DSM | used from 149 nm out; 34 nm from the line | 250/47 | 260/25 20° | 240/19 11° | 240/31 5° | 250/26 -9° | 260/38 -20° | 260/47 -34° | 270/58 -37° | 270/61 -47° |
| OMA | used from 248 nm out; 58 nm from the line | 230/47 | 240/33 21° | 230/22 13° | 220/27 5° | 240/35 -8° | 250/43 -21° | 260/47 -33° | 260/59 -36° | 270/58 -46° |
| FSD | used from 347 nm out; 54 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° |
| ONL | used from 397 nm out; 46 nm from the line | 250/31 22° | 230/27 16° | 220/25 8° | 230/25 -9° | 220/29 -22° | 250/42 -33° | 250/48 -36° | 250/52 -46° | |
| PIR | used from 496 nm out; 41 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 595 nm out; 40 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° | |
| MLS | used from 744 nm out; 75 nm from the line | 290/17 -1° | 250/18 0° | 230/25 0° | 220/31 -11° | 220/32 -24° | 220/50 -32° | 220/60 -38° | 230/71 -46° | |
| BIL | used from 843 nm out; 34 nm from the line | 300/14 | 270/19 -2° | 260/26 -2° | 220/28 -13° | 210/51 -25° | 220/56 -33° | 220/61 -39° | 220/72 -45° | |
| GTF | used from 992 nm out; 65 nm from the line | L/V | L/V -7° | 240/8 -8° | 240/30 -14° | 240/40 -28° | 210/52 -38° | 210/76 -38° | 220/72 -43° | |
| GPI | used from 1091 nm out; 95 nm from the line | 090/8 -4° | 140/7 -7° | 090/10 -8° | 110/10 -19° | 210/25 -30° | 200/24 -40° | 210/31 -39° | 210/35 -42° |
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 |
|---|---|---|---|---|---|---|---|
| SPI Springfield, IL | departure | no report just now | 597 ft | ||||
| FSW Fort Madison, IA | 89 nm out, 6 nm northeast of the line | no report just now | 721 ft | ||||
| DSM Des Moines, IA | 208 nm out, 2 nm northeast of the line, tower | no report just now | 957 ft | ||||
| SUX Sioux City, IA | 337 nm out, 6 nm southwest of the line, tower | no report just now | 1,098 ft | ||||
| VMR Vermillion, SD | 367 nm out, 6 nm north of the line | no report just now | 1,146 ft | ||||
| ICR Winner, SD | 506 nm out, 14 nm south of the line | no report just now | 2,032 ft | ||||
| PHP Philip, SD | 585 nm out, 7 nm southwest of the line | no report just now | 2,209 ft | ||||
| EFC Belle Fourche, SD | 694 nm out, 3 nm south of the line | no report just now | 3,190 ft | ||||
| BIL Billings, MT | 903 nm out, 5 nm south of the line, tower | no report just now | 3,662 ft | ||||
| HWQ Harlowton, MT | 962 nm out, 17 nm north of the line | no report just now | 4,311 ft | ||||
| HLN Helena, MT | 1052 nm out, 3 nm north of the line, tower | no report just now | 3,877 ft | ||||
| MSO Missoula, MT | destination | no report just now | 3,205 ft |
The highest airport on this list sits at 4,311 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At MSO when you get there the forecast at the estimated arrival, 1:38 pm MDT (19:38 UTC)
MSO has no terminal forecast; use the nearest airport that does.
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 SPI 6:24 pm CDT (23:24 UTC), at MSO 6:53 pm MDT (00:53 UTC) (civil twilight ends 7:23 pm MDT (01:23 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: Abraham Lincoln Capital Airport, Missoula Montana Airport.
