St. Louis Lambert International to Des Moines International STL → DSM
225 nautical miles (259 statute miles) northwest on a straight line, true course 319°, about 320° magnetic at the departure end (variation 1W). At 120 knots that is 1 h 51 min at the quickest height in today's winds (4,500 ft, a 2-knot tailwind), arriving about 10:37 pm CDT (03:37 UTC), after sunset at the destination. Right now STL is VFR, wind from the southeast (130°) at 7 knots; DSM is VFR, wind from the south (170°) at 10 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: 814 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 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 39 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 STL.
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 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 4 forecast points nearest it (STL, COU, BRL, DSM). 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 | 220° at 20 kt | −2 kt | 122 kt | 1 h 51 min | 10:37 pm CDT (03:37 UTC) | |
| 6,500 ft | 240° at 21 kt | +6 kt | 15 °C | 114 kt | 1 h 58 min | 10:44 pm CDT (03:44 UTC) |
| 8,500 ft | 250° at 22 kt | +8 kt | 11 °C | 112 kt | 2 h 01 min | 10:47 pm CDT (03:47 UTC) |
| 10,500 ft | 260° at 22 kt | +10 kt | 8 °C | 110 kt | 2 h 03 min | 10:49 pm CDT (03:49 UTC) |
| 12,500 ft | 260° at 21 kt | +12 kt | 4 °C | 108 kt | 2 h 05 min | 10:51 pm CDT (03:51 UTC) |
| 14,500 ft | 270° at 20 kt | +13 kt | 0 °C | 107 kt | 2 h 06 min | 10:52 pm CDT (03:52 UTC) |
| 16,500 ft | 270° at 19 kt | +13 kt | -4 °C | 107 kt | 2 h 06 min | 10:52 pm CDT (03:52 UTC) |
| 18,000 ft FL180 | 280° at 18 kt | +14 kt | -7 °C | 106 kt | 2 h 07 min | 10:53 pm CDT (03:53 UTC) |
| 24,000 ft FL240 | 280° at 18 kt | +14 kt | -18 °C | 106 kt | 2 h 07 min | 10:53 pm CDT (03:53 UTC) |
| 30,000 ft FL300 | 310° at 31 kt | +30 kt | -32 °C | 90 kt | 2 h 30 min | 11:16 pm CDT (04:16 UTC) |
| 34,000 ft FL340 | 300° at 44 kt | +42 kt | -42 °C | 78 kt | 2 h 53 min | 11:39 pm CDT (04:39 UTC) |
| 39,000 ft FL390 | 300° at 62 kt | +60 kt | -52 °C | 60 kt | 3 h 45 min | 12:31 am CDT (05:31 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| STL | used from 0 nm out; 25 nm from the line | 210/13 | 260/16 17° | 270/21 10° | 280/24 5° | 310/20 -7° | 320/22 -18° | 320/44 -33° | 320/59 -43° | 310/69 -51° |
| COU | used from 49 nm out; 63 nm from the line | 210/16 | 220/19 15° | 240/33 10° | 250/29 7° | 280/21 -6° | 280/19 -18° | 300/34 -31° | 300/40 -42° | 300/60 -52° |
| BRL | used from 98 nm out; 55 nm from the line | 200/20 | 250/21 16° | 240/22 10° | 260/20 5° | 270/16 -7° | 290/22 -18° | 320/41 -34° | 320/56 -43° | 310/68 -53° |
| DSM | used from 147 nm out; 54 nm from the line | 200/32 | 240/27 17° | 260/19 10° | 260/16 5° | 260/19 -7° | 240/22 -19° | 270/20 -32° | 270/38 -42° | 290/58 -53° |
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 |
|---|---|---|---|---|---|---|---|
| STL St Louis, MO | departure | VFR Sky: a few clouds at 25,000 feet | from the southeast (130°) at 7 knots | 10+ mi | none | 617 ft | 7:51 pm CDT (00:51 UTC) |
| HAE Hannibal, MO | 78 nm out, 2 nm east of the line | VFR | calm | 10+ mi | none | 768 ft | 23:35 UTC |
| IRK Kirksville, MO | 127 nm out, 22 nm southwest of the line | reported, no category | from the south (170°) at 6 knots | 10+ mi | none | 966 ft | 00:55 UTC |
| TVK Centerville, IA | 167 nm out, 10 nm southwest of the line | VFR | calm | 10+ mi | none | 1,023 ft | 01:35 UTC |
| OXV Knoxville, IA | 196 nm out, 9 nm northeast of the line | VFR | from the south-southeast (160°) at 7 knots | 10+ mi | none | 928 ft | 01:35 UTC |
| DSM Des Moines, IA | destination | VFR Sky: a broken layer at 20,000 feet | from the south (170°) at 10 knots | 10+ mi | 20,000 ft | 957 ft | 7:54 pm CDT (00:54 UTC) |
The highest airport on this list sits at 1,023 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At DSM when you get there the forecast at the estimated arrival, 10:37 pm CDT (03:37 UTC)
Wind from the south at 9 knots, visibility more than 6 miles, low-level wind shear, scattered clouds at 25,000 feet VFR
The whole forecast for DSM
- From Sun 7:00 pm CDT (00:00 UTC): wind from the south at 12 knots, visibility more than 6 miles, a broken layer at 25,000 feet
- From Sun 10:00 pm CDT (03:00 UTC): wind from the south at 9 knots, visibility more than 6 miles, low-level wind shear, scattered clouds at 25,000 feet
- From Mon 9:00 am CDT (14:00 UTC): wind from the south-southwest at 12 knots, visibility more than 6 miles, a few clouds at 25,000 feet
- From Mon 12:00 pm CDT (17:00 UTC): wind from the south-southwest at 12 knots, gusting to 19, visibility more than 6 miles, a few clouds at 25,000 feet
The forecast for STL, the departure
- From Sun 7:00 pm CDT (00:00 UTC): wind from the south at 5 knots, visibility more than 6 miles, clear skies
- From Mon 1:00 am CDT (06:00 UTC): wind from the south-southwest at 6 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 southwest at 12 knots, gusting to 20, 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 STL 6:27 pm CDT (23:27 UTC), at DSM 6:38 pm CDT (23:38 UTC) (civil twilight ends 7:06 pm CDT (00:06 UTC)). At 120 knots the arrival at DSM is after sunset there (6:40 pm CDT (23:40 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: St. Louis Lambert International, Des Moines International.