Dane County Rgnl/Truax Field to Blue Grass Airport MSN → LEX
375 nautical miles (431 statute miles) southeast on a straight line, true course 143°, about 146° magnetic at the departure end (variation 3W). At 120 knots that is 2 h 10 min at the quickest height in today's winds (39,000 ft, a 53-knot tailwind), arriving about 4:02 am EDT (08:02 UTC), after sunset at the destination. Right now MSN is VFR, wind from the south-southwest (200°) at 8 knots; LEX is low IFR, wind from the west-southwest (240°) 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: 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 SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the last 187 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 MSN.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- B38M at 29,000 ft, 49 nm southwest, 11:52 pm CDT (04:52 UTC): no turbulence from 23,000 ft to 29,000 ft. 158 nm along the route, 49 nm southwest of the line.
as filed, and in English
TIP UA /OV RBS/TM 0452/FL290/TP B38M/TB NEG 230-290
- Report
- a routine report filed through TIP
- Where
- over RBS
- Time
- 04:52 UTC
- Height
- at 29,000 ft
- Aircraft
- B38M
- Turbulence
- no from 23,000 ft to 29,000 ft
Winds aloft along the route, and the time en route the forecast for use 02:00–09:00 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 5 forecast points nearest it (DBQ, JOT, IND, CVG, LOU). 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 | 270° at 18 kt | −11 kt | 131 kt | 2 h 52 min | 4:44 am EDT (08:44 UTC) | |
| 5,500 ft | 290° at 19 kt | −16 kt | 136 kt | 2 h 45 min | 4:37 am EDT (08:37 UTC) | |
| 7,500 ft | 300° at 18 kt | −16 kt | 12 °C | 136 kt | 2 h 45 min | 4:37 am EDT (08:37 UTC) |
| 9,500 ft | 310° at 15 kt | −14 kt | 9 °C | 134 kt | 2 h 48 min | 4:40 am EDT (08:40 UTC) |
| 11,500 ft | 310° at 11 kt | −11 kt | 5 °C | 131 kt | 2 h 52 min | 4:44 am EDT (08:44 UTC) |
| 13,500 ft | 300° at 13 kt | −13 kt | 1 °C | 133 kt | 2 h 49 min | 4:41 am EDT (08:41 UTC) |
| 15,500 ft | 300° at 17 kt | −16 kt | -2 °C | 136 kt | 2 h 45 min | 4:37 am EDT (08:37 UTC) |
| 17,500 ft | 300° at 21 kt | −19 kt | -6 °C | 139 kt | 2 h 42 min | 4:34 am EDT (08:34 UTC) |
| 18,000 ft FL180 | 300° at 22 kt | −19 kt | -7 °C | 139 kt | 2 h 42 min | 4:34 am EDT (08:34 UTC) |
| 24,000 ft FL240 | 310° at 28 kt | −27 kt | -19 °C | 147 kt | 2 h 33 min | 4:25 am EDT (08:25 UTC) |
| 30,000 ft FL300 | 320° at 36 kt | −36 kt | -34 °C | 156 kt | 2 h 24 min | 4:16 am EDT (08:16 UTC) |
| 34,000 ft FL340 | 310° at 53 kt | −50 kt | -43 °C | 170 kt | 2 h 12 min | 4:04 am EDT (08:04 UTC) |
| 39,000 ft FL390 | 310° at 56 kt | −53 kt | -51 °C | 173 kt | 2 h 10 min | 4:02 am EDT (08:02 UTC) |
Based on data from the 12th at 00:00 UTC; valid on the 12th at 06:00 UTC for use 02:00 to 09:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| DBQ | used from 0 nm out; 79 nm from the line | 230/33 | 250/30 16° | 280/15 9° | 260/15 5° | 260/21 -7° | 260/24 -20° | 250/37 -33° | 270/42 -43° | 280/63 -52° |
| JOT | used from 49 nm out; 39 nm from the line | 250/23 | 270/22 15° | 250/16 10° | 240/9 4° | 280/22 -7° | 280/29 -19° | 300/29 -34° | 290/50 -43° | 300/64 -52° |
| IND | used from 197 nm out; 26 nm from the line | 290/16 | 310/20 16° | 320/21 10° | 330/13 3° | 300/25 -7° | 320/32 -19° | 330/46 -34° | 320/61 -43° | 320/63 -50° |
| CVG | used from 296 nm out; 31 nm from the line | 320/18 | 350/32 16° | 350/35 10° | 350/30 3° | 330/30 -7° | 340/44 -20° | 340/58 -35° | 330/72 -41° | 320/36 -49° |
| LOU | used from 345 nm out; 42 nm from the line | 310/18 | 340/28 16° | 340/29 10° | 350/27 3° | 330/27 -7° | 340/39 -19° | 330/58 -33° | 330/67 -41° | 330/40 -49° |
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 |
|---|---|---|---|---|---|---|---|
| MSN Madison, WI | departure | VFR | from the south-southwest (200°) at 8 knots | 10+ mi | none | 886 ft | 11:53 pm CDT (04:53 UTC) |
| JVL Janesville, WI | 30 nm out, 9 nm southwest of the line, tower | VFR | from the south (180°) at 3 knots | 10+ mi | none | 807 ft | 05:35 UTC |
| DKB De Kalb, IL | 79 nm out, 21 nm southwest of the line | VFR | from the south-southwest (210°) at 9 knots | 10+ mi | none | 912 ft | 05:35 UTC |
| DPA Chicago/West Chicago, IL | 89 nm out, 5 nm southwest of the line, tower | VFR | from the south (170°) at 3 knots | 10+ mi | none | 758 ft | 04:52 UTC |
| GYY Gary/Chicago, IN | 128 nm out, 16 nm northeast of the line, tower | VFR | from the south (180°) at 5 knots | 10+ mi | none | 596 ft | 05:35 UTC |
| LAF Lafayette, IN | 197 nm out, 9 nm southwest of the line, tower | VFR Sky: a few clouds at 200 feet | calm | 9 mi | none | 605 ft | 05:35 UTC |
| IND Indianapolis, IN | 246 nm out, 9 nm southwest of the line, tower | VFR | from the southeast (130°) at 4 knots | 10+ mi | none | 796 ft | 04:54 UTC |
| BAK Columbus, IN | 276 nm out, 10 nm southwest of the line, tower | VFR | calm | 10+ mi | none | 656 ft | 01:45 UTC |
| OVO North Vernon, IN | 296 nm out, 6 nm southwest of the line | no report just now | 757 ft | ||||
| FFT Frankfort, KY | 355 nm out, 8 nm south of the line | reported, no category | calm | none | 812 ft | 04:53 UTC | |
| LEX Lexington, KY | destination | low IFR Sky: sky obscured at 200 feet Weather: fog | from the west-southwest (240°) at 5 knots | 0.5 mi | 200 ft | 979 ft | 1:25 am EDT (05:25 UTC) |
The highest airport on this list sits at 979 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At LEX when you get there the forecast at the estimated arrival, 4:02 am EDT (08:02 UTC)
Wind from the west at 4 knots, visibility ½ mile, fog, clear skies low IFR
The whole forecast for LEX
- From Mon 2:00 am EDT (06:00 UTC): wind from the west at 4 knots, visibility ½ mile, fog, clear skies
- At times between Mon 5:00 am EDT (09:00 UTC) and 9:00 am EDT (13:00 UTC): visibility ¼ mile, fog, overcast at 100 feet
- From Mon 10:00 am EDT (14:00 UTC): wind from the south-southwest at 6 knots, visibility more than 6 miles, a few clouds at 25,000 feet
- From Mon 8:00 pm EDT (00:00 UTC): wind from the south at 3 knots, visibility more than 6 miles, clear skies
The forecast for MSN, the departure
- From Mon 1:00 am CDT (06:00 UTC): wind from the south at 7 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
- From Mon 8:00 pm CDT (01:00 UTC): wind from the south-southwest at 8 knots, visibility more than 6 miles, low-level wind shear, 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 MSN 6:19 pm CDT (23:19 UTC), at LEX 7:05 pm EDT (23:05 UTC) (civil twilight ends 7:31 pm EDT (23:31 UTC)). At 120 knots the arrival at LEX is before sunrise there (7:43 am EDT (11:43 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: Dane County Rgnl/Truax Field, Blue Grass Airport.