St. Louis Lambert International to Dane County Rgnl/Truax Field STL → MSN
268 nautical miles (308 statute miles) north on a straight line, true course 010°, about 011° magnetic at the departure end (variation 1W). At 120 knots that is 1 h 58 min at the quickest height in today's winds (3,500 ft, a 16-knot tailwind), arriving about 9:52 pm CDT (02:52 UTC), after sunset at the destination. Right now STL is VFR, wind from the southeast (130°) at 6 knots; MSN is VFR, wind from the south (180°) at 5 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: 3 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
No SIGMET or AIRMET covers any part of this route right now.
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
- B737 at 32,000 ft, 16 nm east, 5:42 pm CDT (22:42 UTC): light clear-air turbulence. At the destination end, 16 nm east of the line.
as filed, and in English
UES UA /OV BAE270030/TM 2242/FL320/TP B737/TB OCNL LGT CAT
- Report
- a routine report filed through UES
- Where
- 30 nm west (270°) of BAE
- Time
- 22:42 UTC
- Height
- at 32,000 ft
- Aircraft
- B737
- Turbulence
- occasional light clear-air turbulence
- B738 at 36,000 ft, 46 nm east, 5:11 pm CDT (22:11 UTC): no turbulence. At the destination end, 46 nm east of the line.
as filed, and in English
UES UA /OV BAE/TM 2211/FL360/TP B738/TB NEG
- Report
- a routine report filed through UES
- Where
- over BAE
- Time
- 22:11 UTC
- Height
- at 36,000 ft
- Aircraft
- B738
- Turbulence
- none
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 4 forecast points nearest it (STL, SPI, BRL, DBQ). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 3,500 ft | 220° at 18 kt | −16 kt | 136 kt | 1 h 58 min | 9:52 pm CDT (02:52 UTC) | |
| 5,500 ft | 240° at 18 kt | −11 kt | 131 kt | 2 h 03 min | 9:57 pm CDT (02:57 UTC) | |
| 7,500 ft | 250° at 20 kt | −10 kt | 13 °C | 130 kt | 2 h 04 min | 9:58 pm CDT (02:58 UTC) |
| 9,500 ft | 250° at 21 kt | −9 kt | 9 °C | 129 kt | 2 h 05 min | 9:59 pm CDT (02:59 UTC) |
| 11,500 ft | 270° at 20 kt | −5 kt | 6 °C | 125 kt | 2 h 09 min | 10:03 pm CDT (03:03 UTC) |
| 13,500 ft | 270° at 19 kt | −2 kt | 2 °C | 122 kt | 2 h 12 min | 10:06 pm CDT (03:06 UTC) |
| 15,500 ft | 280° at 18 kt | 0 | -3 °C | 120 kt | 2 h 14 min | 10:08 pm CDT (03:08 UTC) |
| 17,500 ft | 290° at 17 kt | +2 kt | -7 °C | 118 kt | 2 h 16 min | 10:10 pm CDT (03:10 UTC) |
| 18,000 ft FL180 | 290° at 16 kt | +2 kt | -8 °C | 118 kt | 2 h 16 min | 10:10 pm CDT (03:10 UTC) |
| 24,000 ft FL240 | 300° at 24 kt | +9 kt | -19 °C | 111 kt | 2 h 25 min | 10:19 pm CDT (03:19 UTC) |
| 30,000 ft FL300 | 320° at 43 kt | +25 kt | -34 °C | 95 kt | 2 h 49 min | 10:43 pm CDT (03:43 UTC) |
| 34,000 ft FL340 | 320° at 57 kt | +37 kt | -44 °C | 83 kt | 3 h 14 min | 11:08 pm CDT (04:08 UTC) |
| 39,000 ft FL390 | 310° at 67 kt | +30 kt | -52 °C | 90 kt | 2 h 59 min | 10:53 pm CDT (03:53 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° |
| SPI | used from 50 nm out; 21 nm from the line | 210/13 | 260/11 17° | 270/18 10° | 290/21 4° | 310/20 -8° | 330/25 -19° | 320/49 -34° | 320/60 -44° | 320/59 -50° |
| BRL | used from 99 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° |
| DBQ | used from 149 nm out; 66 nm from the line | 220/23 | 240/22 16° | 240/24 10° | 260/18 5° | 270/16 -8° | 290/27 -19° | 310/42 -35° | 320/55 -44° | 300/71 -52° |
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 6 knots | 10+ mi | none | 617 ft | 6:51 pm CDT (23:51 UTC) |
| SPI Springfield, IL | 69 nm out, 20 nm east of the line, tower | VFR | from the south-southeast (160°) at 5 knots | 10+ mi | none | 597 ft | 23:52 UTC |
| PIA Peoria, IL | 119 nm out, 11 nm east of the line, tower | VFR | calm | 10+ mi | none | 660 ft | 23:54 UTC |
| EZI Kewanee, IL | 149 nm out, 7 nm west of the line | no report just now | 858 ft | ||||
| RFD Chicago/Rockford, IL | 218 nm out, 21 nm east of the line, tower | VFR Sky: a few clouds at 25,000 feet | from the southeast (130°) at 3 knots | 10+ mi | none | 742 ft | 23:54 UTC |
| JVL Janesville, WI | 238 nm out, 19 nm east of the line, tower | VFR Sky: scattered clouds at 25,000 feet | from the south (190°) at 6 knots | 10+ mi | none | 807 ft | 00:45 UTC |
| MSN Madison, WI | destination | VFR | from the south (180°) at 5 knots | 10+ mi | none | 886 ft | 6:53 pm CDT (23:53 UTC) |
The highest airport on this list sits at 886 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At MSN when you get there the forecast at the estimated arrival, 9:52 pm CDT (02:52 UTC)
Wind from the south at 8 knots, visibility more than 6 miles, a few clouds at 25,000 feet VFR
The whole forecast for MSN
- From Sun 7:00 pm CDT (00:00 UTC): wind from the south at 8 knots, visibility more than 6 miles, a few clouds at 25,000 feet
- From Sun 11:00 pm CDT (04:00 UTC): wind from the south at 6 knots, visibility more than 6 miles, low-level wind shear, a broken layer at 25,000 feet
- From Mon 7:00 am CDT (12:00 UTC): wind from the south-southwest at 10 knots, visibility more than 6 miles, scattered 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 MSN 6:19 pm CDT (23:19 UTC) (civil twilight ends 6:48 pm CDT (23:48 UTC)). At 120 knots the arrival at MSN is after sunset there (6:21 pm CDT (23:21 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, Dane County Rgnl/Truax Field.