Green Bay/Austin Straubel International to Savannah/Hilton Head International GRB → SAV
810 nautical miles (932 statute miles) southeast on a straight line, true course 154°, about 156° magnetic at the departure end (variation 2W). At 120 knots that is 5 h 02 min at the quickest height in today's winds (39,000 ft, a 41-knot tailwind), arriving about 3:01 pm EDT (19:01 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 SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Near the route, 480 nm along the route.
- AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 6,000 ft. Over the route from 570 to 630 nm out.
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 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 9 forecast points nearest it (GRB, MKG, FWA, CVG, TRI, TYS, GSP, CAE, SAV). 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 | 300° at 18 kt | −14 kt | 134 kt | 6 h 03 min | 4:02 pm EDT (20:02 UTC) | |
| 5,500 ft | 310° at 18 kt | −16 kt | 11 °C | 136 kt | 5 h 57 min | 3:56 pm EDT (19:56 UTC) |
| 7,500 ft | 320° at 18 kt | −18 kt | 12 °C | 138 kt | 5 h 52 min | 3:51 pm EDT (19:51 UTC) |
| 9,500 ft | 320° at 19 kt | −19 kt | 8 °C | 139 kt | 5 h 50 min | 3:49 pm EDT (19:49 UTC) |
| 11,500 ft | 320° at 21 kt | −20 kt | 5 °C | 140 kt | 5 h 47 min | 3:46 pm EDT (19:46 UTC) |
| 13,500 ft | 310° at 23 kt | −22 kt | 2 °C | 142 kt | 5 h 42 min | 3:41 pm EDT (19:41 UTC) |
| 15,500 ft | 310° at 26 kt | −24 kt | -2 °C | 144 kt | 5 h 38 min | 3:37 pm EDT (19:37 UTC) |
| 17,500 ft | 310° at 28 kt | −26 kt | -6 °C | 146 kt | 5 h 33 min | 3:32 pm EDT (19:32 UTC) |
| 18,000 ft FL180 | 310° at 29 kt | −26 kt | -7 °C | 146 kt | 5 h 33 min | 3:32 pm EDT (19:32 UTC) |
| 24,000 ft FL240 | 310° at 31 kt | −27 kt | -19 °C | 147 kt | 5 h 31 min | 3:30 pm EDT (19:30 UTC) |
| 30,000 ft FL300 | 310° at 36 kt | −32 kt | -34 °C | 152 kt | 5 h 20 min | 3:19 pm EDT (19:19 UTC) |
| 34,000 ft FL340 | 310° at 43 kt | −40 kt | -43 °C | 160 kt | 5 h 04 min | 3:03 pm EDT (19:03 UTC) |
| 39,000 ft FL390 | 300° at 48 kt | −41 kt | -51 °C | 161 kt | 5 h 02 min | 3:01 pm EDT (19:01 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; 25 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° |
| MKG | used from 50 nm out; 51 nm from the line | 260/28 | 260/18 15° | 250/16 9° | 260/22 4° | 280/31 -9° | 270/35 -21° | 270/44 -35° | 270/42 -45° | 290/61 -51° |
| FWA | used from 150 nm out; 76 nm from the line | 270/20 | 300/16 15° | 290/14 10° | 280/17 3° | 290/25 -7° | 280/30 -19° | 280/34 -35° | 290/48 -44° | 300/64 -52° |
| CVG | used from 300 nm out; 37 nm from the line | 300/19 | 310/23 15° | 320/20 9° | 310/18 3° | 300/26 -6° | 290/36 -19° | 310/32 -34° | 310/53 -43° | 310/61 -51° |
| TRI | used from 450 nm out; 82 nm from the line | 340/25 11° | 350/37 9° | 350/34 6° | 340/39 -7° | 340/43 -19° | 340/55 -32° | 330/58 -42° | 320/37 -50° | |
| TYS | used from 550 nm out; 49 nm from the line | 330/16 | 350/32 14° | 350/37 9° | 340/30 5° | 330/28 -6° | 340/36 -19° | 330/40 -33° | 330/51 -41° | 330/36 -51° |
| GSP | used from 600 nm out; 19 nm from the line | 340/30 | 360/24 13° | 350/29 10° | 340/33 6° | 340/40 -7° | 350/44 -19° | 340/59 -31° | 350/55 -41° | 300/29 -50° |
| CAE | used from 700 nm out; 46 nm from the line | 340/17 | 330/15 12° | 320/22 9° | 320/31 5° | 330/35 -7° | 320/33 -19° | 340/40 -32° | 350/43 -39° | 320/35 -49° |
| SAV | used from 750 nm out; 35 nm from the line | 330/16 | 310/15 14° | 320/23 10° | 310/30 7° | 310/30 -6° | 300/28 -19° | 270/25 -32° | 300/25 -39° | 320/26 -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 | no report just now | 695 ft | ||||
| MTW Manitowoc, WI | 30 nm out, 8 nm northeast of the line | no report just now | 650 ft | ||||
| BEH Benton Harbor, MI | 160 nm out, 7 nm northeast of the line | no report just now | 649 ft | ||||
| SBN South Bend, IN | 180 nm out, 5 nm southeast of the line, tower | no report just now | 798 ft | ||||
| MIE Muncie, IN | 280 nm out, 3 nm east of the line, tower | no report just now | 937 ft | ||||
| CVG Covington, KY | 360 nm out, 4 nm east of the line, tower | no report just now | 896 ft | ||||
| LEX Lexington, KY | 420 nm out, 18 nm west of the line, tower | no report just now | 979 ft | ||||
| MOR Morristown, TN | 540 nm out, 9 nm southwest of the line | no report just now | 1,312 ft | ||||
| GYH Greenville, SC | 640 nm out, 5 nm east of the line, tower | no report just now | 955 ft | ||||
| GRD Greenwood, SC | 670 nm out, 5 nm southeast of the line | no report just now | 631 ft | ||||
| AGS Augusta, GA | 730 nm out, 9 nm west of the line, tower | no report just now | 145 ft | ||||
| SAV Savannah, GA | destination | no report just now | 50 ft |
The highest airport on this list sits at 1,312 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At SAV when you get there the forecast at the estimated arrival, 3:01 pm EDT (19:01 UTC)
SAV has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/8029 Cincinnati, OH, Friday, October 9, 2026 through Monday, October 12, 2026 Local on the route, 360 nm along the route · a VIP movement · until 12 October · ZID
Daylight
Sunset at GRB 6:13 pm CDT (23:13 UTC), at SAV 6:56 pm EDT (22:56 UTC) (civil twilight ends 7:20 pm EDT (23:20 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, Savannah/Hilton Head International.