Green Bay/Austin Straubel International to Huntsville Intl-Carl T Jones Field GRB → HSV
595 nautical miles (684 statute miles) south on a straight line, true course 174°, about 176° magnetic at the departure end (variation 2W). At 120 knots that is 3 h 53 min at the quickest height in today's winds (39,000 ft, a 33-knot tailwind), arriving about 2:57 pm CDT (19:57 UTC). Right now GRB is VFR, wind from the southwest (220°) at 7 knots; HSV is VFR, wind from the northwest (310°) at 6 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: 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
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 GRB.
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 14:00–21:00 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 | 250° at 17 kt | +4 kt | 116 kt | 5 h 08 min | 4:12 pm CDT (21:12 UTC) | |
| 5,500 ft | 250° at 19 kt | +4 kt | 116 kt | 5 h 08 min | 4:12 pm CDT (21:12 UTC) | |
| 7,500 ft | 260° at 21 kt | +1 kt | 13 °C | 119 kt | 5 h | 4:04 pm CDT (21:04 UTC) |
| 9,500 ft | 270° at 25 kt | −2 kt | 10 °C | 122 kt | 4 h 53 min | 3:57 pm CDT (20:57 UTC) |
| 11,500 ft | 280° at 27 kt | −6 kt | 6 °C | 126 kt | 4 h 43 min | 3:47 pm CDT (20:47 UTC) |
| 13,500 ft | 280° at 28 kt | −8 kt | 2 °C | 128 kt | 4 h 39 min | 3:43 pm CDT (20:43 UTC) |
| 15,500 ft | 280° at 28 kt | −9 kt | -2 °C | 129 kt | 4 h 37 min | 3:41 pm CDT (20:41 UTC) |
| 17,500 ft | 280° at 29 kt | −10 kt | -6 °C | 130 kt | 4 h 35 min | 3:39 pm CDT (20:39 UTC) |
| 18,000 ft FL180 | 290° at 29 kt | −10 kt | -7 °C | 130 kt | 4 h 35 min | 3:39 pm CDT (20:39 UTC) |
| 24,000 ft FL240 | 280° at 35 kt | −10 kt | -20 °C | 130 kt | 4 h 35 min | 3:39 pm CDT (20:39 UTC) |
| 30,000 ft FL300 | 290° at 43 kt | −16 kt | -34 °C | 136 kt | 4 h 22 min | 3:26 pm CDT (20:26 UTC) |
| 34,000 ft FL340 | 290° at 50 kt | −25 kt | -39 °C | 145 kt | 4 h 06 min | 3:10 pm CDT (20:10 UTC) |
| 39,000 ft FL390 | 300° at 55 kt | −33 kt | -48 °C | 153 kt | 3 h 53 min | 2:57 pm CDT (19:57 UTC) |
Based on data from the 12th at 12:00 UTC; valid on the 12th at 18:00 UTC for use 14:00 to 21:00 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; 25 nm from the line | 260/10 | 240/27 16° | 260/31 10° | 270/25 5° | 280/31 -10° | 280/35 -22° | 270/46 -37° | 290/43 -40° | 300/64 -48° |
| JOT | used from 99 nm out; 57 nm from the line | 230/30 | 250/26 16° | 270/27 11° | 280/34 5° | 290/32 -8° | 280/37 -21° | 280/40 -36° | 290/46 -37° | 290/56 -47° |
| IND | used from 248 nm out; 56 nm from the line | 260/18 | 250/20 15° | 260/26 9° | 290/28 5° | 290/30 -7° | 280/40 -20° | 280/46 -35° | 290/53 -38° | 300/58 -47° |
| EVV | used from 347 nm out; 22 nm from the line | 270/15 | 250/15 14° | 260/24 11° | 270/28 6° | 280/30 -7° | 280/34 -18° | 290/48 -33° | 290/59 -38° | 300/56 -48° |
| BNA | used from 446 nm out; 38 nm from the line | 270/14 | 270/10 14° | 280/19 11° | 280/26 6° | 280/25 -6° | 280/31 -18° | 300/44 -32° | 300/53 -40° | 310/51 -49° |
| HSV | used from 545 nm out; 25 nm from the line | 290/11 | 300/10 15° | 300/17 12° | 290/20 6° | 290/18 -5° | 290/25 -17° | 310/38 -31° | 320/47 -40° | 330/43 -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 |
|---|---|---|---|---|---|---|---|
| GRB Green Bay, WI | departure | VFR | from the southwest (220°) at 7 knots | 10+ mi | none | 695 ft | 10:53 am CDT (15:53 UTC) |
| OSH Oshkosh, WI | 30 nm out, 22 nm west of the line, tower | VFR | from the southwest (220°) at 7 knots | 10+ mi | none | 808 ft | 15:53 UTC |
| MKE Milwaukee, WI | 89 nm out, 4 nm south of the line, tower | VFR Sky: a few clouds at 20,000 feet, a broken layer at 25,000 feet | from the southwest (230°) at 14 knots, gusting to 20 | 10+ mi | 25,000 ft | 728 ft | 15:52 UTC |
| MDW Chicago, IL | 159 nm out, 5 nm south of the line, tower | VFR Sky: scattered clouds at 25,000 feet | from the southwest (230°) at 10 knots | 10+ mi | none | 619 ft | 15:53 UTC |
| IKK Kankakee, IL | 208 nm out, 11 nm west of the line | VFR | from the southwest (230°) at 12 knots | 10+ mi | none | 629 ft | 15:55 UTC |
| DNV Danville, IL | 258 nm out, 5 nm west of the line | no report just now | 696 ft | ||||
| HUF Terre Haute, IN | 307 nm out, 5 nm northeast of the line, tower | VFR | from the southwest (230°) at 8 knots | 10+ mi | none | 589 ft | 15:53 UTC |
| OWB Owensboro, KY | 406 nm out, 1 nm south of the line, tower | VFR | from the southwest (230°) at 5 knots | 10+ mi | none | 407 ft | 15:56 UTC |
| JQD Hartford, KY | 426 nm out, 13 nm east of the line | no report just now | 537 ft | ||||
| JWN Nashville, TN | 505 nm out, 5 nm northeast of the line, tower | VFR | calm | 10+ mi | none | 501 ft | 15:50 UTC |
| LUG Lewisburg, TN | 545 nm out, 5 nm northeast of the line | VFR | calm | 10+ mi | none | 718 ft | 16:00 UTC |
| HSV Huntsville, AL | destination | VFR Sky: a few clouds at 25,000 feet | from the northwest (310°) at 6 knots | 10+ mi | none | 628 ft | 10:53 am CDT (15:53 UTC) |
The highest airport on this list sits at 808 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, 2:57 pm CDT (19:57 UTC)
Wind from the west at 5 knots, visibility more than 6 miles, clear skies VFR
The whole forecast for HSV
- From Mon 7:00 am CDT (12:00 UTC): wind light and variable, visibility 6 miles, mist, clear skies
- From Mon 10:00 am CDT (15:00 UTC): wind from the west at 5 knots, visibility more than 6 miles, clear skies
- From Mon 7:00 pm CDT (00:00 UTC): wind light and variable, visibility more than 6 miles, clear skies
The forecast for GRB, the departure
- From Mon 7:00 am CDT (12:00 UTC): wind from the south-southwest at 6 knots, visibility more than 6 miles, scattered clouds at 20,000 feet
- From Mon 8:00 pm CDT (01:00 UTC): wind from the east-southeast at 3 knots, visibility more than 6 miles, scattered clouds at 6,000 feet, a broken layer at 10,000 feet
- 30% chance between Mon 9:00 pm CDT (02:00 UTC) and 11:00 pm CDT (04:00 UTC): light rain showers, a broken layer at 6,000 feet
- From Mon 11:00 pm CDT (04:00 UTC): wind from the south at 4 knots, visibility more than 6 miles, a broken layer at 2,000 feet
- From Tue 3:00 am CDT (08:00 UTC): wind from the west at 5 knots, visibility more than 6 miles, scattered clouds at 2,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/0708 Goodlettsville, TN, Saturday, August 1, 2026 through Sunday, August 1, 2027 UTC 13 nm from the route, 495 nm along the route · security · until 1 August · ZME
Daylight
Sunset at GRB 6:13 pm CDT (23:13 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: Green Bay/Austin Straubel International, Huntsville Intl-Carl T Jones Field.