Plan a flight · Mon 11:00 am CDT (16:00 UTC)

Green Bay/Austin Straubel International to Birmingham-Shuttlesworth International GRB → BHM

659 nautical miles (758 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 18 min at the quickest height in today's winds (39,000 ft, a 33-knot tailwind), arriving about 3:18 pm CDT (20:18 UTC). Right now GRB is VFR, wind from the southwest (220°) at 7 knots; BHM is VFR, wind from the west (270°) 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

E170 at 24,000 ft, 37 nm east, 10:18 am CDT (15:18 UTC): moderate turbulence. 329 nm along the route, 37 nm east of the line.
as filed, and in English
```
IND UA /OV OOM/TM 1518/FL240/TP E170/TB MOD
```
Report
a routine report filed through IND
Where
over OOM
Time
15:18 UTC
Height
at 24,000 ft
Aircraft
E170
Turbulence
moderate
E170 at 21,000 ft, 37 nm east, 10:18 am CDT (15:18 UTC): moderate turbulence. 329 nm along the route, 37 nm east of the line.
as filed, and in English
```
IND UA /OV OOM/TM 1518/FL210/TP E170/TB MOD
```
Report
a routine report filed through IND
Where
over OOM
Time
15:18 UTC
Height
at 21,000 ft
Aircraft
E170
Turbulence
moderate
B39M at 36,000 ft, 7 nm northwest, 8:18 am CDT (13:18 UTC): no turbulence. 140 nm along the route, 7 nm northwest of the line.
as filed, and in English
```
PWK UA /OV OBK/TM 1318/FL360/TP B39M/TB NEG
```
Report
a routine report filed through PWK
Where
over OBK
Time
13:18 UTC
Height
at 36,000 ft
Aircraft
B39M
Turbulence
none
C17 at 2,000 ft, 33 nm west, 10:06 am CDT (15:06 UTC): overcast above 2,000 ft, remarks: during the descent. 160 nm along the route, 33 nm west of the line.
as filed, and in English
```
KADW UA /OV 1L ARR/TM 1506/FL020/TP C17/SK OVC020/WV 23KT HEAD WIND/RM DURD
```
Report
a routine report filed through KADW
Where
1L arrival
Time
15:06 UTC
Height
at 2,000 ft
Aircraft
C17
Sky
overcast from 2,000 ft
Wind
23 knots head wind
Remarks
during the descent

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 7 forecast points nearest it (GRB, JOT, IND, EVV, BNA, HSV, BHM). 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 16 kt	+3 kt		117 kt	5 h 38 min	4:38 pm CDT (21:38 UTC)
5,500 ft	250° at 17 kt	+3 kt		117 kt	5 h 38 min	4:38 pm CDT (21:38 UTC)
7,500 ft	260° at 20 kt	+1 kt	13 °C	119 kt	5 h 32 min	4:32 pm CDT (21:32 UTC)
9,500 ft	270° at 24 kt	−3 kt	10 °C	123 kt	5 h 21 min	4:21 pm CDT (21:21 UTC)
11,500 ft	280° at 26 kt	−6 kt	6 °C	126 kt	5 h 14 min	4:14 pm CDT (21:14 UTC)
13,500 ft	280° at 27 kt	−8 kt	2 °C	128 kt	5 h 09 min	4:09 pm CDT (21:09 UTC)
15,500 ft	280° at 27 kt	−9 kt	-2 °C	129 kt	5 h 07 min	4:07 pm CDT (21:07 UTC)
17,500 ft	280° at 28 kt	−10 kt	-6 °C	130 kt	5 h 04 min	4:04 pm CDT (21:04 UTC)
18,000 ft FL180	290° at 28 kt	−10 kt	-7 °C	130 kt	5 h 04 min	4:04 pm CDT (21:04 UTC)
24,000 ft FL240	280° at 34 kt	−10 kt	-19 °C	130 kt	5 h 04 min	4:04 pm CDT (21:04 UTC)
30,000 ft FL300	290° at 42 kt	−17 kt	-34 °C	137 kt	4 h 49 min	3:49 pm CDT (20:49 UTC)
34,000 ft FL340	300° at 49 kt	−26 kt	-39 °C	146 kt	4 h 31 min	3:31 pm CDT (20:31 UTC)
39,000 ft FL390	300° at 53 kt	−33 kt	-48 °C	153 kt	4 h 18 min	3:18 pm CDT (20:18 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 100 nm out; 56 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 250 nm out; 57 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 349 nm out; 18 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 449 nm out; 36 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 549 nm out; 21 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°
BHM	used from 649 nm out; 5 nm from the line	310/11	310/13 16°	310/18 11°	300/17 6°	300/14 -5°	300/20 -17°	320/35 -30°	320/43 -40°	340/38 -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	90 nm out, 3 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	160 nm out, 3 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
DNV Danville, IL	260 nm out, 3 nm west of the line	no report just now				696 ft
HUF Terre Haute, IN	299 nm out, 8 nm southeast of the line, tower	VFR	from the southwest (230°) at 8 knots	10+ mi	none	589 ft	15:53 UTC
EVV Evansville, IN	389 nm out, 12 nm west of the line, tower	VFR	from the southwest (230°) at 7 knots	10+ mi	none	421 ft	15:54 UTC
OWB Owensboro, KY	409 nm out, 4 nm northeast of the line, tower	VFR	from the southwest (230°) at 5 knots	10+ mi	none	407 ft	15:56 UTC
JWN Nashville, TN	499 nm out, 8 nm east of the line, tower	VFR	calm	10+ mi	none	501 ft	15:50 UTC
DCU Decatur, AL	589 nm out, 5 nm southwest of the line	VFR	from the northwest (310°) at 8 knots	10+ mi	none	592 ft	15:53 UTC
HSV Huntsville, AL	599 nm out, 6 nm northeast of the line, tower	VFR Sky: a few clouds at 25,000 feet	from the northwest (310°) at 6 knots	10+ mi	none	628 ft	15:53 UTC
BHM Birmingham, AL	destination	VFR Sky: a few clouds at 4,200 feet, a few clouds at 25,000 feet	from the west (270°) at 6 knots	10+ mi	none	650 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 BHM when you get there the forecast at the estimated arrival, 3:18 pm CDT (20:18 UTC)

Wind from the west-northwest at 5 knots, visibility more than 6 miles, clear skies VFR

The whole forecast for BHM

From Mon 7:00 am CDT (12:00 UTC): wind calm, visibility more than 6 miles, a few clouds at 25,000 feet
From Mon 11:00 am CDT (16:00 UTC): wind from the west-northwest at 5 knots, 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 17 nm from the route, 489 nm along the route · security · until 1 August · ZME

Daylight

Sunset at GRB 6:13 pm CDT (23:13 UTC), at BHM 6:17 pm CDT (23:17 UTC) (civil twilight ends 6:42 pm CDT (23:42 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

Radar now, the upper Mississippi valley · loop National Weather Service

Radar now, the central Great Lakes · loop National Weather Service

Radar now, the lower Mississippi valley · loop National Weather Service

Radar, the whole country · loop National Weather Service

Surface analysis now Weather Prediction Center

Forecast chart, 12 hours ahead Weather Prediction Center

Forecast chart, 24 hours ahead Weather Prediction Center

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, Birmingham-Shuttlesworth International.