New Castle Airport to Green Bay/Austin Straubel International ILG → GRB
627 nautical miles (722 statute miles) northwest on a straight line, true course 301°, about 311° magnetic at the departure end (variation 10W). At 120 knots that is 5 h 45 min at the quickest height in today's winds (4,500 ft, a 11-knot headwind), arriving about 1:54 pm CDT (18:54 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: 4 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). Over the first 448 nm of the route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 33,000 ft. Over the first 199 nm of the route.
- AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 6,000 ft. Near the route, 70 nm along the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 80 to 209 nm out.
- AIRMET TANGO 2W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Near the route, 548 nm along 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 ILG.
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 westbound cruising heights for this course (VFR: even 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 (ACY, PSB, AGC, CLE, MKG, GRB). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 4,500 ft | 310° at 11 kt | +11 kt | 12 °C | 109 kt | 5 h 45 min | 1:54 pm CDT (18:54 UTC) |
| 6,500 ft | 330° at 12 kt | +11 kt | 13 °C | 109 kt | 5 h 45 min | 1:54 pm CDT (18:54 UTC) |
| 8,500 ft | 330° at 13 kt | +12 kt | 9 °C | 108 kt | 5 h 48 min | 1:57 pm CDT (18:57 UTC) |
| 10,500 ft | 320° at 15 kt | +15 kt | 5 °C | 105 kt | 5 h 58 min | 2:07 pm CDT (19:07 UTC) |
| 12,500 ft | 320° at 19 kt | +18 kt | 2 °C | 102 kt | 6 h 09 min | 2:18 pm CDT (19:18 UTC) |
| 14,500 ft | 320° at 22 kt | +21 kt | -2 °C | 99 kt | 6 h 20 min | 2:29 pm CDT (19:29 UTC) |
| 16,500 ft | 310° at 25 kt | +24 kt | -6 °C | 96 kt | 6 h 32 min | 2:41 pm CDT (19:41 UTC) |
| 18,000 ft FL180 | 310° at 27 kt | +27 kt | -9 °C | 93 kt | 6 h 45 min | 2:54 pm CDT (19:54 UTC) |
| 24,000 ft FL240 | 310° at 29 kt | +28 kt | -21 °C | 92 kt | 6 h 49 min | 2:58 pm CDT (19:58 UTC) |
| 30,000 ft FL300 | 310° at 36 kt | +35 kt | -36 °C | 85 kt | 7 h 23 min | 3:32 pm CDT (20:32 UTC) |
| 34,000 ft FL340 | 310° at 45 kt | +45 kt | -44 °C | 75 kt | 8 h 22 min | 4:31 pm CDT (21:31 UTC) |
| 39,000 ft FL390 | 310° at 48 kt | +47 kt | -51 °C | 73 kt | 8 h 35 min | 4:44 pm CDT (21:44 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| ACY | used from 0 nm out; 74 nm from the line | 350/12 | 340/12 11° | 340/12 6° | 340/13 2° | 270/10 -10° | 240/17 -23° | 230/46 -33° | 230/46 -40° | 240/46 -49° |
| PSB | used from 50 nm out; 60 nm from the line | 020/21 12° | 360/28 7° | 360/29 1° | 350/33 -10° | 350/42 -22° | 350/49 -37° | 340/63 -43° | 350/39 -52° | |
| AGC | used from 199 nm out; 72 nm from the line | 340/11 | 350/12 11° | 360/25 7° | 340/30 2° | 340/41 -8° | 340/44 -21° | 350/59 -36° | 340/68 -42° | 340/50 -51° |
| CLE | used from 249 nm out; 56 nm from the line | 310/7 | 350/20 14° | 340/16 9° | 320/21 2° | 320/32 -8° | 330/34 -20° | 330/45 -36° | 320/60 -45° | 320/64 -51° |
| MKG | used from 398 nm out; 105 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° |
| GRB | used from 548 nm out; 55 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° |
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 |
|---|---|---|---|---|---|---|---|
| ILG Wilmington, DE | departure | no report just now | 79 ft | ||||
| MDT Harrisburg, PA | 60 nm out, 2 nm west of the line, tower | no report just now | 310 ft | ||||
| CXY Harrisburg, PA | 70 nm out, 4 nm southeast of the line, tower | no report just now | 346 ft | ||||
| DUJ Dubois, PA | 179 nm out, 4 nm east of the line | no report just now | 1,816 ft | ||||
| ERI Erie, PA | 249 nm out, 22 nm north of the line, tower | no report just now | 732 ft | ||||
| HZY Ashtabula, OH | 259 nm out, 7 nm southwest of the line | no report just now | 926 ft | ||||
| DET Detroit, MI | 368 nm out, 20 nm southwest of the line, tower | no report just now | 624 ft | ||||
| FNT Flint, MI | 418 nm out, 4 nm south of the line, tower | no report just now | 782 ft | ||||
| MBS Saginaw, MI | 448 nm out, 21 nm northeast of the line, tower | no report just now | 668 ft | ||||
| LDM Ludington, MI | 548 nm out, 1 nm northeast of the line | no report just now | 646 ft | ||||
| MTW Manitowoc, WI | 597 nm out, 13 nm southwest of the line | no report just now | 650 ft | ||||
| GRB Green Bay, WI | destination | no report just now | 695 ft |
The highest airport on this list sits at 1,816 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At GRB when you get there the forecast at the estimated arrival, 1:54 pm CDT (18:54 UTC)
GRB has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/8829 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 6 nm from the route, 249 nm along the route · a VIP movement · today · ZOB
- 6/8587 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 6 nm from the route, 249 nm along the route · a VIP movement · today · ZOB
Daylight
Sunset at ILG 6:28 pm EDT (22:28 UTC), at GRB 6:13 pm CDT (23:13 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
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: New Castle Airport, Green Bay/Austin Straubel International.