Spokane International to Waterloo Regional GEG → ALO
1,102 nautical miles (1,269 statute miles) east on a straight line, true course 097°, about 083° magnetic at the departure end (variation 14E). At 120 knots that is 6 h 34 min at the quickest height in today's winds (39,000 ft, a 48-knot tailwind), arriving about 3:45 am CDT (08:45 UTC), after sunset at the destination. 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 ZULU 2C: moderate icing up to 16,000 ft. Over the first 278 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 40 to 377 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 route from 70 to 735 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 70 to 655 nm out.
- AIRMET TANGO 3W: 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 last 109 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 GEG.
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 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 10 forecast points nearest it (GEG, GPI, GTF, BIL, MLS, DIK, PIR, ABR, FSD, MCW). 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 | 110° at 7 kt | +8 kt | 6 °C | 112 kt | 9 h 50 min | 7:01 am CDT (12:01 UTC) |
| 7,500 ft | 160° at 5 kt | +4 kt | 8 °C | 116 kt | 9 h 30 min | 6:41 am CDT (11:41 UTC) |
| 9,500 ft | 200° at 9 kt | 0 | 3 °C | 120 kt | 9 h 11 min | 6:22 am CDT (11:22 UTC) |
| 11,500 ft | 210° at 15 kt | −3 kt | 1 °C | 123 kt | 8 h 58 min | 6:09 am CDT (11:09 UTC) |
| 13,500 ft | 220° at 20 kt | −7 kt | -3 °C | 127 kt | 8 h 41 min | 5:52 am CDT (10:52 UTC) |
| 15,500 ft | 220° at 24 kt | −10 kt | -7 °C | 130 kt | 8 h 29 min | 5:40 am CDT (10:40 UTC) |
| 17,500 ft | 220° at 29 kt | −14 kt | -11 °C | 134 kt | 8 h 13 min | 5:24 am CDT (10:24 UTC) |
| 18,000 ft FL180 | 220° at 30 kt | −15 kt | -12 °C | 135 kt | 8 h 10 min | 5:21 am CDT (10:21 UTC) |
| 24,000 ft FL240 | 230° at 39 kt | −20 kt | -22 °C | 140 kt | 7 h 52 min | 5:03 am CDT (10:03 UTC) |
| 30,000 ft FL300 | 220° at 48 kt | −23 kt | -36 °C | 143 kt | 7 h 42 min | 4:53 am CDT (09:53 UTC) |
| 34,000 ft FL340 | 230° at 55 kt | −34 kt | -43 °C | 154 kt | 7 h 09 min | 4:20 am CDT (09:20 UTC) |
| 39,000 ft FL390 | 250° at 60 kt | −48 kt | -49 °C | 168 kt | 6 h 34 min | 3:45 am CDT (08:45 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| GEG | used from 0 nm out; 25 nm from the line | 050/18 -2° | 060/19 -8° | L/V -11° | 160/11 -24° | 190/17 -31° | 200/19 -35° | 220/14 -37° | 250/11 -41° | |
| GPI | used from 99 nm out; 59 nm from the line | 060/19 -3° | 110/11 -8° | 130/6 -8° | 200/40 -19° | 190/58 -28° | 200/101 -39° | 220/73 -43° | 230/41 -43° | |
| GTF | used from 199 nm out; 39 nm from the line | 070/21 | 080/18 -6° | 120/5 -5° | 180/30 -14° | 200/53 -24° | 210/80 -38° | 220/83 -44° | 230/68 -46° | |
| BIL | used from 298 nm out; 74 nm from the line | 080/24 | 130/14 -1° | 180/33 0° | 210/43 -10° | 220/58 -21° | 200/55 -36° | 220/75 -44° | 240/83 -48° | |
| MLS | used from 447 nm out; 23 nm from the line | 120/22 5° | 170/18 4° | 200/33 1° | 230/49 -10° | 230/58 -21° | 220/54 -37° | 230/64 -44° | 250/74 -49° | |
| DIK | used from 546 nm out; 82 nm from the line | 110/15 6° | 200/17 5° | 230/31 1° | 240/47 -10° | 240/52 -20° | 230/52 -36° | 240/57 -45° | 250/67 -51° | |
| PIR | used from 646 nm out; 77 nm from the line | L/V 17° | 230/13 12° | 220/22 6° | 250/31 -9° | 250/34 -21° | 240/50 -35° | 230/61 -43° | 240/62 -51° | |
| ABR | used from 795 nm out; 65 nm from the line | 030/24 | 220/5 16° | 230/18 12° | 230/32 5° | 240/38 -10° | 250/37 -20° | 240/40 -35° | 240/56 -44° | 250/72 -52° |
| FSD | used from 844 nm out; 39 nm from the line | 200/16 | 220/20 17° | 240/26 13° | 230/19 6° | 240/25 -9° | 240/28 -20° | 250/39 -33° | 250/44 -43° | 260/63 -52° |
| MCW | used from 993 nm out; 36 nm from the line | 200/35 | 240/33 18° | 250/20 10° | 260/10 6° | 270/18 -8° | 260/28 -19° | 280/30 -34° | 290/49 -43° | 280/70 -54° |
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 |
|---|---|---|---|---|---|---|---|
| GEG Spokane, WA | departure | no report just now | 2,385 ft | ||||
| THM Thompson Falls, MT | 89 nm out, 9 nm north of the line | no report just now | 2,467 ft | ||||
| MSO Missoula, MT | 149 nm out, 23 nm south of the line, tower | no report just now | 3,205 ft | ||||
| HWQ Harlowton, MT | 318 nm out, 18 nm south of the line | no report just now | 4,311 ft | ||||
| RPX Roundup, MT | 377 nm out, 5 nm southwest of the line | no report just now | 3,490 ft | ||||
| MLS Miles City, MT | 477 nm out, 21 nm northeast of the line | no report just now | 2,634 ft | ||||
| MKA Miller, SD | 795 nm out, 1 nm northwest of the line | no report just now | 1,569 ft | ||||
| FSD Sioux Falls, SD | 904 nm out, 18 nm southwest of the line, tower | no report just now | 1,430 ft | ||||
| AXA Algona, IA | 1013 nm out, 5 nm south of the line | no report just now | 1,216 ft | ||||
| ALO Waterloo, IA | destination | no report just now | 873 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 ALO when you get there the forecast at the estimated arrival, 3:45 am CDT (08:45 UTC)
ALO 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 GEG 6:08 pm PDT (01:08 UTC), at ALO 6:32 pm CDT (23:32 UTC) (civil twilight ends 7:00 pm CDT (00:00 UTC)). At 120 knots the arrival at ALO is before sunrise there (7:18 am CDT (12:18 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: Spokane International, Waterloo Regional.