Green Bay/Austin Straubel International to Des Moines International GRB → DSM
301 nautical miles (346 statute miles) southwest on a straight line, true course 236°, about 238° magnetic at the departure end (variation 2W). At 120 knots that is 2 h 50 min at the quickest height in today's winds (10,500 ft, a 14-knot headwind), arriving about 4:49 am CDT (09:49 UTC), after sunset at the destination. Right now GRB is VFR, wind from the south-southwest (210°) at 6 knots; DSM is VFR, wind from the south (190°) at 10 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
- AIRMET TANGO 3W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Over the last 271 nm of 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 GRB.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
No pilot reports within 50 nautical miles of the line in the last three hours.
Winds aloft along the route, and the time en route the forecast for use 02:00–09:00 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 4 forecast points nearest it (GRB, LSE, DBQ, DSM). 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 | 240° at 31 kt | +31 kt | 89 kt | 3 h 23 min | 5:22 am CDT (10:22 UTC) | |
| 6,500 ft | 250° at 25 kt | +23 kt | 15 °C | 97 kt | 3 h 06 min | 5:05 am CDT (10:05 UTC) |
| 8,500 ft | 260° at 16 kt | +15 kt | 11 °C | 105 kt | 2 h 52 min | 4:51 am CDT (09:51 UTC) |
| 10,500 ft | 260° at 15 kt | +14 kt | 7 °C | 106 kt | 2 h 50 min | 4:49 am CDT (09:49 UTC) |
| 12,500 ft | 250° at 16 kt | +16 kt | 4 °C | 104 kt | 2 h 54 min | 4:53 am CDT (09:53 UTC) |
| 14,500 ft | 260° at 19 kt | +17 kt | 0 °C | 103 kt | 2 h 55 min | 4:54 am CDT (09:54 UTC) |
| 16,500 ft | 270° at 22 kt | +18 kt | -5 °C | 102 kt | 2 h 57 min | 4:56 am CDT (09:56 UTC) |
| 18,000 ft FL180 | 270° at 24 kt | +19 kt | -8 °C | 101 kt | 2 h 59 min | 4:58 am CDT (09:58 UTC) |
| 24,000 ft FL240 | 270° at 28 kt | +23 kt | -20 °C | 97 kt | 3 h 06 min | 5:05 am CDT (10:05 UTC) |
| 30,000 ft FL300 | 270° at 38 kt | +33 kt | -34 °C | 87 kt | 3 h 28 min | 5:27 am CDT (10:27 UTC) |
| 34,000 ft FL340 | 270° at 46 kt | +36 kt | -43 °C | 84 kt | 3 h 35 min | 5:34 am CDT (10:34 UTC) |
| 39,000 ft FL390 | 280° at 65 kt | +45 kt | -53 °C | 75 kt | 4 h 01 min | 6:00 am CDT (11:00 UTC) |
Based on data from the 12th at 00:00 UTC; valid on the 12th at 06:00 UTC for use 02:00 to 09:00 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 | 250/36 | 270/23 16° | 270/14 9° | 240/18 4° | 280/26 -9° | 280/29 -20° | 290/42 -36° | 290/51 -45° | 290/72 -55° |
| LSE | used from 97 nm out; 49 nm from the line | 230/40 | 240/24 17° | 240/13 10° | 250/13 6° | 280/22 -9° | 250/28 -21° | 250/41 -34° | 260/42 -44° | 270/62 -53° |
| DBQ | used from 145 nm out; 38 nm from the line | 230/33 | 250/30 16° | 280/15 9° | 260/15 5° | 260/21 -7° | 260/24 -20° | 250/37 -33° | 270/42 -43° | 280/63 -52° |
| DSM | used from 242 nm out; 34 nm from the line | 230/40 | 250/33 17° | 250/18 12° | 240/17 5° | 260/28 -8° | 270/34 -19° | 260/41 -33° | 260/55 -41° | 270/62 -51° |
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-southwest (210°) at 6 knots | 10+ mi | none | 695 ft | 1:53 am CDT (06:53 UTC) |
| ATW Appleton, WI | 19 nm out, 3 nm south of the line, tower | VFR | from the south (190°) at 6 knots | 10+ mi | none | 918 ft | 06:55 UTC |
| DLL Baraboo, WI | 87 nm out, 8 nm south of the line | VFR | from the south-southwest (200°) at 8 knots | 10+ mi | none | 980 ft | 06:35 UTC |
| OVS Boscobel, WI | 136 nm out, 2 nm southeast of the line | VFR | calm | 10+ mi | none | 672 ft | 06:53 UTC |
| IIB Independence, IA | 204 nm out, 4 nm south of the line | VFR | from the south (180°) at 8 knots | 10+ mi | none | 979 ft | 06:55 UTC |
| ALO Waterloo, IA | 223 nm out, 15 nm north of the line, tower | VFR | from the south (180°) at 9 knots | 10+ mi | none | 873 ft | 06:54 UTC |
| TNU Newton, IA | 271 nm out, 11 nm southeast of the line | VFR Sky: a few clouds at 1,600 feet | from the south (190°) at 7 knots | 10+ mi | none | 952 ft | 06:55 UTC |
| DSM Des Moines, IA | destination | VFR Sky: a few clouds at 21,000 feet | from the south (190°) at 10 knots | 10+ mi | none | 957 ft | 1:54 am CDT (06:54 UTC) |
The highest airport on this list sits at 980 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At DSM when you get there the forecast at the estimated arrival, 4:49 am CDT (09:49 UTC)
Wind from the south at 9 knots, visibility more than 6 miles, low-level wind shear, scattered clouds at 25,000 feet VFR
The whole forecast for DSM
- From Mon 1:00 am CDT (06:00 UTC): wind from the south at 9 knots, visibility more than 6 miles, low-level wind shear, scattered clouds at 25,000 feet
- From Mon 9:00 am CDT (14:00 UTC): wind from the south-southwest at 12 knots, visibility more than 6 miles, a few clouds at 25,000 feet
- From Mon 11:00 am CDT (16:00 UTC): wind from the south-southwest at 12 knots, gusting to 19, visibility more than 6 miles, a few clouds at 25,000 feet
- From Mon 9:00 pm CDT (02:00 UTC): wind from the west-southwest at 10 knots, visibility more than 6 miles, a few clouds at 25,000 feet
- From Tue 12:00 am CDT (05:00 UTC): wind from the west-northwest at 8 knots, visibility more than 6 miles, clear skies
The forecast for GRB, the departure
- From Mon 1:00 am CDT (06:00 UTC): wind from the south-southwest at 6 knots, visibility more than 6 miles, low-level wind shear, a broken layer at 25,000 feet
- From Mon 5:00 am CDT (10:00 UTC): wind from the south-southwest at 6 knots, visibility more than 6 miles, a broken layer at 20,000 feet
- From Mon 11:00 am CDT (16:00 UTC): wind from the south-southwest at 6 knots, visibility more than 6 miles, clear skies
- From Mon 5:00 pm CDT (22:00 UTC): wind from the south at 4 knots, visibility more than 6 miles, scattered clouds at 6,000 feet, scattered clouds at 15,000 feet
- 30% chance between Mon 6:00 pm CDT (23:00 UTC) and 10:00 pm CDT (03:00 UTC): light rain showers, a broken layer at 6,000 feet
- From Mon 10:00 pm CDT (03:00 UTC): wind from the east-southeast at 4 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 DSM 6:38 pm CDT (23:38 UTC) (civil twilight ends 7:06 pm CDT (00:06 UTC)). At 120 knots the arrival at DSM is before sunrise there (7:23 am CDT (12:23 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, Des Moines International.