Houghton County Memorial to Huntsville Intl-Carl T Jones Field CMX → HSV
756 nautical miles (870 statute miles) south on a straight line, true course 174°, about 176° magnetic at the departure end (variation 2W). At 120 knots that is 4 h 58 min at the quickest height in today's winds (39,000 ft, a 32-knot tailwind), arriving about 8:41 am CDT (13:41 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
- 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 route from 80 to 189 nm out.
- AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist, fog). Over the last 20 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 CMX.
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 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 6 forecast points nearest it (GRB, JOT, IND, EVV, BNA, HSV). 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 | 260° at 23 kt | 0 | 120 kt | 6 h 18 min | 10:01 am CDT (15:01 UTC) | |
| 5,500 ft | 270° at 19 kt | −1 kt | 121 kt | 6 h 15 min | 9:58 am CDT (14:58 UTC) | |
| 7,500 ft | 270° at 16 kt | 0 | 12 °C | 120 kt | 6 h 18 min | 10:01 am CDT (15:01 UTC) |
| 9,500 ft | 260° at 15 kt | 0 | 8 °C | 120 kt | 6 h 18 min | 10:01 am CDT (15:01 UTC) |
| 11,500 ft | 280° at 17 kt | −4 kt | 6 °C | 124 kt | 6 h 06 min | 9:49 am CDT (14:49 UTC) |
| 13,500 ft | 280° at 20 kt | −6 kt | 2 °C | 126 kt | 6 h | 9:43 am CDT (14:43 UTC) |
| 15,500 ft | 280° at 24 kt | −8 kt | -3 °C | 128 kt | 5 h 54 min | 9:37 am CDT (14:37 UTC) |
| 17,500 ft | 290° at 27 kt | −10 kt | -7 °C | 130 kt | 5 h 49 min | 9:32 am CDT (14:32 UTC) |
| 18,000 ft FL180 | 290° at 28 kt | −11 kt | -8 °C | 131 kt | 5 h 46 min | 9:29 am CDT (14:29 UTC) |
| 24,000 ft FL240 | 280° at 32 kt | −9 kt | -20 °C | 129 kt | 5 h 52 min | 9:35 am CDT (14:35 UTC) |
| 30,000 ft FL300 | 280° at 37 kt | −13 kt | -35 °C | 133 kt | 5 h 41 min | 9:24 am CDT (14:24 UTC) |
| 34,000 ft FL340 | 290° at 50 kt | −21 kt | -43 °C | 141 kt | 5 h 22 min | 9:05 am CDT (14:05 UTC) |
| 39,000 ft FL390 | 300° at 56 kt | −32 kt | -50 °C | 152 kt | 4 h 58 min | 8:41 am CDT (13:41 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| GRB | used from 0 nm out; 137 nm from the line | 250/32 | 250/22 17° | 240/18 8° | 280/21 6° | 280/34 -11° | 280/35 -21° | 280/39 -37° | 270/52 -45° | 290/60 -49° |
| JOT | used from 249 nm out; 69 nm from the line | 250/25 | 260/22 14° | 250/17 9° | 270/21 5° | 280/28 -8° | 280/36 -20° | 270/41 -35° | 280/57 -42° | 290/65 -50° |
| IND | used from 398 nm out; 60 nm from the line | 270/22 | 290/19 15° | 270/19 8° | 270/18 4° | 290/28 -7° | 280/35 -20° | 270/37 -34° | 300/51 -42° | 300/61 -51° |
| EVV | used from 498 nm out; 32 nm from the line | 270/25 | 290/17 15° | 260/10 8° | 270/16 5° | 280/29 -6° | 280/33 -19° | 290/38 -33° | 300/53 -41° | 310/54 -51° |
| BNA | used from 597 nm out; 48 nm from the line | 300/20 | 300/14 15° | 300/14 10° | 300/13 4° | 310/22 -5° | 280/24 -18° | 310/37 -33° | 310/50 -41° | 320/49 -51° |
| HSV | used from 697 nm out; 35 nm from the line | 300/20 | 310/14 16° | 310/18 10° | 310/15 4° | 320/19 -5° | 290/16 -18° | 320/36 -32° | 320/47 -41° | 330/42 -50° |
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 |
|---|---|---|---|---|---|---|---|
| CMX Hancock, MI | departure | no report just now | 1,095 ft | ||||
| IMT Iron Mountain Kingsford, MI | 80 nm out, 7 nm east of the line | no report just now | 1,182 ft | ||||
| GRB Green Bay, WI | 159 nm out, 4 nm southwest of the line, tower | no report just now | 695 ft | ||||
| UGN Chicago/Waukegan, IL | 289 nm out, 5 nm west of the line, tower | no report just now | 728 ft | ||||
| MDW Chicago, IL | 328 nm out, 5 nm northwest of the line, tower | no report just now | 619 ft | ||||
| DNV Danville, IL | 418 nm out, 7 nm southwest of the line | no report just now | 696 ft | ||||
| HUF Terre Haute, IN | 468 nm out, 3 nm northeast of the line, tower | no report just now | 589 ft | ||||
| OWB Owensboro, KY | 567 nm out, 2 nm southwest of the line, tower | no report just now | 407 ft | ||||
| JWN Nashville, TN | 667 nm out, 5 nm northeast of the line, tower | no report just now | 501 ft | ||||
| LUG Lewisburg, TN | 707 nm out, 4 nm northeast of the line | no report just now | 718 ft | ||||
| HSV Huntsville, AL | destination | no report just now | 628 ft |
The highest airport on this list sits at 1,182 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At HSV when you get there the forecast at the estimated arrival, 8:41 am CDT (13:41 UTC)
HSV has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/8665 9NM E HERMAN, MI, Friday, October 9, 2026 through Tuesday, October 13, 2026 UTC 5 nm from the route, at the departure end · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 13 October · ZMP
- 6/0708 Goodlettsville, TN, Saturday, August 1, 2026 through Sunday, August 1, 2027 UTC 13 nm from the route, 657 nm along the route · security · until 1 August · ZME
Daylight
Sunset at CMX 7:12 pm EDT (23:12 UTC), at HSV 6:16 pm CDT (23:16 UTC) (civil twilight ends 6:41 pm CDT (23:41 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: Houghton County Memorial, Huntsville Intl-Carl T Jones Field.