Green Bay/Austin Straubel International to Snow Lake Seaplane Base GRB → IN2
214 nautical miles (246 statute miles) southeast on a straight line, true course 140°, about 142° magnetic at the departure end (variation 2W). At 120 knots that is 1 h 13 min at the quickest height in today's winds (39,000 ft, a 57-knot tailwind), arriving about 1:17 pm EDT (17:17 UTC). Right now GRB is VFR, wind from the southwest (220°) at 7 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 28,000 ft, 24 nm northeast, 8:10 am CDT (13:10 UTC): moderate chop turbulence. 156 nm along the route, 24 nm northeast of the line.
as filed, and in English
GRR UA /OV VIO/TM 1310/FL280/TP E170/TB OCNL MOD CHOP
- Report
- a routine report filed through GRR
- Where
- over VIO
- Time
- 13:10 UTC
- Height
- at 28,000 ft
- Aircraft
- E170
- Turbulence
- occasional moderate chop
- B39M at 34,000 ft, 21 nm southwest, 9:01 am CDT (14:01 UTC): no turbulence. 126 nm along the route, 21 nm southwest of the line.
as filed, and in English
BIV UA /OV PMM300030/TM 1401/FL340/TP B39M/TB NEG
- Report
- a routine report filed through BIV
- Where
- 30 nm northwest (300°) of PMM
- Time
- 14:01 UTC
- Height
- at 34,000 ft
- Aircraft
- B39M
- Turbulence
- none
- E170 at 4,800 ft, 46 nm south, 10:21 am CDT (15:21 UTC): no turbulence. At the destination end, 46 nm south of the line.
as filed, and in English
FWA UA /OV FWA/TM 1521/FL048/TP E170/WX VIS 10/TB NEG
- Report
- a routine report filed through FWA
- Where
- over FWA
- Time
- 15:21 UTC
- Height
- at 4,800 ft
- Aircraft
- E170
- Weather
- visibility, 10
- Turbulence
- none
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 3 forecast points nearest it (GRB, MKG, FWA). 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 | 240° at 23 kt | −5 kt | 125 kt | 1 h 43 min | 1:47 pm EDT (17:47 UTC) | |
| 5,500 ft | 240° at 25 kt | −5 kt | 125 kt | 1 h 43 min | 1:47 pm EDT (17:47 UTC) | |
| 7,500 ft | 250° at 26 kt | −11 kt | 12 °C | 131 kt | 1 h 38 min | 1:42 pm EDT (17:42 UTC) |
| 9,500 ft | 270° at 27 kt | −17 kt | 8 °C | 137 kt | 1 h 34 min | 1:38 pm EDT (17:38 UTC) |
| 11,500 ft | 280° at 26 kt | −19 kt | 6 °C | 139 kt | 1 h 32 min | 1:36 pm EDT (17:36 UTC) |
| 13,500 ft | 280° at 27 kt | −20 kt | 2 °C | 140 kt | 1 h 32 min | 1:36 pm EDT (17:36 UTC) |
| 15,500 ft | 280° at 28 kt | −21 kt | -3 °C | 141 kt | 1 h 31 min | 1:35 pm EDT (17:35 UTC) |
| 17,500 ft | 280° at 28 kt | −22 kt | -8 °C | 142 kt | 1 h 30 min | 1:34 pm EDT (17:34 UTC) |
| 18,000 ft FL180 | 280° at 29 kt | −22 kt | -9 °C | 142 kt | 1 h 30 min | 1:34 pm EDT (17:34 UTC) |
| 24,000 ft FL240 | 280° at 33 kt | −26 kt | -22 °C | 146 kt | 1 h 28 min | 1:32 pm EDT (17:32 UTC) |
| 30,000 ft FL300 | 270° at 42 kt | −27 kt | -38 °C | 147 kt | 1 h 27 min | 1:31 pm EDT (17:31 UTC) |
| 34,000 ft FL340 | 290° at 45 kt | −39 kt | -41 °C | 159 kt | 1 h 21 min | 1:25 pm EDT (17:25 UTC) |
| 39,000 ft FL390 | 300° at 61 kt | −57 kt | -48 °C | 177 kt | 1 h 13 min | 1:17 pm EDT (17:17 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; 24 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° |
| MKG | used from 49 nm out; 42 nm from the line | 240/27 | 240/26 15° | 270/27 9° | 280/27 5° | 280/28 -9° | 280/32 -22° | 270/41 -38° | 290/44 -41° | 300/60 -48° |
| FWA | used from 194 nm out; 53 nm from the line | 250/18 | 260/22 15° | 260/27 7° | 290/26 6° | 290/28 -8° | 290/39 -20° | 280/36 -37° | 290/54 -39° | 310/60 -48° |
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) |
| MTW Manitowoc, WI | 29 nm out, 1 nm northeast of the line | VFR | from the west-southwest (250°) at 12 knots | 10+ mi | none | 650 ft | 15:56 UTC |
| MKG Muskegon, MI | 117 nm out, 13 nm northeast of the line, tower | VFR Sky: a broken layer at 25,000 feet | from the south (180°) at 11 knots | 10+ mi | 25,000 ft | 628 ft | 15:55 UTC |
| BIV Holland, MI | 136 nm out, 1 nm east of the line | VFR | from the southwest (220°) at 11 knots, gusting to 18 | 10+ mi | none | 697 ft | 15:53 UTC |
| AZO Kalamazoo, MI | 175 nm out, 1 nm east of the line, tower | VFR | from the south (180°) at 6 knots | 10+ mi | none | 873 ft | 15:53 UTC |
| IN2 Jamestown, IN | destination | no report just now | 965 ft |
The highest airport on this list sits at 965 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At IN2 when you get there the forecast at the estimated arrival, 1:17 pm EDT (17:17 UTC)
IN2 has no terminal forecast; use the nearest airport that does.
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
No temporary flight restriction on or near this route right now.
Daylight
Sunset at GRB 6:13 pm CDT (23:13 UTC), at IN2 7:03 pm EDT (23:03 UTC) (civil twilight ends 7:31 pm EDT (23:31 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, Snow Lake Seaplane Base.