Green Bay/Austin Straubel International to Indianapolis International GRB → IND
298 nautical miles (343 statute miles) south on a straight line, true course 163°, about 165° magnetic at the departure end (variation 2W). At 120 knots that is 1 h 46 min at the quickest height in today's winds (39,000 ft, a 48-knot tailwind), arriving about 11:54 pm EDT (03:54 UTC), after sunset at the destination. Right now GRB is VFR, wind from the south (190°) at 6 knots; IND is VFR, wind calm. 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: 6 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
- E295 at 37,000 ft, 30 nm west, 7:53 pm CDT (00:53 UTC): light chop turbulence. 79 nm along the route, 30 nm west of the line.
as filed, and in English
UES UA /OV BAE/TM 0053/FL370/TP E295/TB OCNL LGT CHOP
- Report
- a routine report filed through UES
- Where
- over BAE
- Time
- 00:53 UTC
- Height
- at 37,000 ft
- Aircraft
- E295
- Turbulence
- occasional light chop
- CRJ7 at 17,000 ft, 7 nm east, 7:04 pm CDT (00:04 UTC): no turbulence. 149 nm along the route, 7 nm east of the line.
as filed, and in English
BEH UA /OV ELX270040/TM 0004/FL170/TP CRJ7/TB NEG
- Report
- a routine report filed through BEH
- Where
- 40 nm west (270°) of ELX
- Time
- 00:04 UTC
- Height
- at 17,000 ft
- Aircraft
- CRJ7
- Turbulence
- none
- B39M at 35,000 ft, 27 nm west, 7:29 pm CDT (00:29 UTC): no turbulence, remarks: smooth. 179 nm along the route, 27 nm west of the line.
as filed, and in English
IKK UA /OV CGT/TM 0029/FL350/TP B39M/TB NEG/RM SMOOTH
- Report
- a routine report filed through IKK
- Where
- over CGT
- Time
- 00:29 UTC
- Height
- at 35,000 ft
- Aircraft
- B39M
- Turbulence
- none
- Remarks
- smooth
- E170 at 23,000 ft, 12 nm west, 6:14 pm CDT (23:14 UTC): light turbulence. 278 nm along the route, 12 nm west of the line.
as filed, and in English
IND UA /OV VHP315020/TM 2314/FL230/TP E170/TB LGT
- Report
- a routine report filed through IND
- Where
- 20 nm northwest (315°) of VHP
- Time
- 23:14 UTC
- Height
- at 23,000 ft
- Aircraft
- E170
- Turbulence
- light
- A21N at 17,000 ft, 45 nm south, 8:28 pm CDT (01:28 UTC): no icing, clear from 17,000 ft to 60,000 ft, remarks: clear since departing KIND southbound. At the destination end, 45 nm south of the line.
as filed, and in English
IND UA /OV IND183045/TM 0128/FL170/TP A21N/SK SKC/IC NEG/RM CLR SINCE DEPARTING KIND SOUTHBOUND
- Report
- a routine report filed through IND
- Where
- 45 nm south (183°) of IND
- Time
- 01:28 UTC
- Height
- at 17,000 ft
- Aircraft
- A21N
- Sky
- clear
- Icing
- none
- Remarks
- clear since departing KIND southbound
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 5 forecast points nearest it (GRB, MKG, JOT, FWA, IND). 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 | 280° at 8 kt | −3 kt | 123 kt | 2 h 25 min | 12:33 am EDT (04:33 UTC) | |
| 5,500 ft | 320° at 13 kt | −11 kt | 131 kt | 2 h 16 min | 12:24 am EDT (04:24 UTC) | |
| 7,500 ft | 320° at 17 kt | −16 kt | 13 °C | 136 kt | 2 h 11 min | 12:19 am EDT (04:19 UTC) |
| 9,500 ft | 320° at 19 kt | −18 kt | 9 °C | 138 kt | 2 h 10 min | 12:18 am EDT (04:18 UTC) |
| 11,500 ft | 330° at 20 kt | −20 kt | 5 °C | 140 kt | 2 h 08 min | 12:16 am EDT (04:16 UTC) |
| 13,500 ft | 330° at 21 kt | −20 kt | 0 °C | 140 kt | 2 h 08 min | 12:16 am EDT (04:16 UTC) |
| 15,500 ft | 320° at 22 kt | −20 kt | -4 °C | 140 kt | 2 h 08 min | 12:16 am EDT (04:16 UTC) |
| 17,500 ft | 320° at 22 kt | −20 kt | -9 °C | 140 kt | 2 h 08 min | 12:16 am EDT (04:16 UTC) |
| 18,000 ft FL180 | 320° at 23 kt | −20 kt | -10 °C | 140 kt | 2 h 08 min | 12:16 am EDT (04:16 UTC) |
| 24,000 ft FL240 | 330° at 36 kt | −35 kt | -21 °C | 155 kt | 1 h 55 min | 12:03 am EDT (04:03 UTC) |
| 30,000 ft FL300 | 330° at 48 kt | −46 kt | -38 °C | 166 kt | 1 h 48 min | 11:56 pm EDT (03:56 UTC) |
| 34,000 ft FL340 | 320° at 46 kt | −42 kt | -45 °C | 162 kt | 1 h 50 min | 11:58 pm EDT (03:58 UTC) |
| 39,000 ft FL390 | 310° at 58 kt | −48 kt | -49 °C | 168 kt | 1 h 46 min | 11:54 pm EDT (03:54 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| GRB | used from 0 nm out; 25 nm from the line | 240/24 | 260/18 16° | 270/20 11° | 290/14 4° | 280/24 -9° | 300/34 -21° | 310/51 -38° | 310/54 -48° | 300/71 -51° |
| MKG | used from 50 nm out; 62 nm from the line | 250/5 | 320/10 15° | 310/19 9° | 320/21 3° | 310/23 -10° | 330/37 -22° | 330/51 -38° | 320/44 -47° | 300/60 -49° |
| JOT | used from 149 nm out; 53 nm from the line | 230/11 | 290/12 16° | 300/19 10° | 320/19 4° | 300/17 -9° | 330/31 -20° | 320/49 -37° | 320/53 -45° | 320/67 -49° |
| FWA | used from 198 nm out; 70 nm from the line | 350/9 | 350/24 15° | 360/25 9° | 360/29 4° | 350/31 -10° | 340/39 -22° | 330/40 -37° | 320/38 -43° | 320/48 -48° |
| IND | used from 248 nm out; 25 nm from the line | 320/10 | 350/30 16° | 350/32 10° | 350/30 4° | 340/31 -10° | 340/42 -21° | 340/49 -37° | 320/46 -41° | 320/47 -47° |
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 south (190°) at 6 knots | 10+ mi | none | 695 ft | 8:53 pm CDT (01:53 UTC) |
| SBM Sheboygan, WI | 40 nm out, 5 nm south of the line | VFR | from the south (180°) at 7 knots | 7 mi | none | 755 ft | 01:53 UTC |
| MWC Milwaukee, WI | 79 nm out, 20 nm west of the line, tower | VFR | from the south (190°) at 4 knots | 10+ mi | none | 744 ft | 01:55 UTC |
| MKE Milwaukee, WI | 89 nm out, 17 nm southwest of the line, tower | VFR | from the south (190°) at 7 knots | 10+ mi | none | 728 ft | 01:52 UTC |
| GYY Gary/Chicago, IN | 179 nm out, 19 nm west of the line, tower | VFR | calm | 9 mi | none | 596 ft | 01:50 UTC |
| LAF Lafayette, IN | 248 nm out, 17 nm west of the line, tower | VFR | calm | 10+ mi | none | 605 ft | 01:54 UTC |
| FKR Frankfort, IN | 258 nm out, 5 nm south of the line | reported, no category | calm | none | 860 ft | 01:55 UTC | |
| IND Indianapolis, IN | destination | VFR | calm | 10+ mi | none | 796 ft | 9:54 pm EDT (01:54 UTC) |
The highest airport on this list sits at 860 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At IND when you get there the forecast at the estimated arrival, 11:54 pm EDT (03:54 UTC)
Wind light and variable, visibility more than 6 miles, a few clouds at 25,000 feet VFR
The whole forecast for IND
- From Sun 8:00 pm EDT (00:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 25,000 feet
- From Mon 4:00 am EDT (08:00 UTC): wind from the south at 6 knots, visibility 6 miles, mist, scattered clouds at 25,000 feet
- At times between Mon 4:00 am EDT (08:00 UTC) and 8:00 am EDT (12:00 UTC): visibility 4 miles, mist, a few clouds at 700 feet
- From Mon 9:00 am EDT (13:00 UTC): wind from the south-southwest at 10 knots, visibility more than 6 miles, scattered clouds at 20,000 feet
The forecast for GRB, the departure
- From Sun 7:00 pm CDT (00:00 UTC): wind from the south at 7 knots, visibility more than 6 miles, clear skies
- From Sun 9:00 pm CDT (02:00 UTC): wind from the south at 7 knots, visibility more than 6 miles, low-level wind shear, clear skies
- From Mon 12:00 am CDT (05:00 UTC): wind from the south-southwest at 6 knots, visibility more than 6 miles, low-level wind shear, scattered clouds at 20,000 feet
- From Mon 8:00 am CDT (13:00 UTC): wind from the south-southwest at 7 knots, visibility more than 6 miles, a broken layer at 25,000 feet
- From Mon 1:00 pm CDT (18:00 UTC): wind from the southwest at 6 knots, visibility more than 6 miles, scattered clouds at 4,500 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 GRB 6:13 pm CDT (23:13 UTC), at IND 7:10 pm EDT (23:10 UTC) (civil twilight ends 7:37 pm EDT (23:37 UTC)). At 120 knots the arrival at IND is before sunrise there (7:52 am EDT (11:52 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, Indianapolis International.
