Cold Bay Airport to Unalaska Airport CDB → DUT
154 nautical miles (178 statute miles) southwest on a straight line, true course 241°, about 229° magnetic at the departure end (variation 12E). At 120 knots that is 1 h 21 min at the quickest height in today's winds (30,000 ft, a 6-knot headwind), arriving about 7:34 pm AKDT (03:34 UTC). Right now CDB is VFR, wind from the west (280°) at 11 knots; DUT is VFR, wind from the south-southwest (210°) at 12 knots, gusting to 24. 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: 382 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 CDB.
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 20:00–03:00 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 2 forecast points nearest it (CDB, IKO). 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 19 kt | +18 kt | 102 kt | 1 h 31 min | 7:44 pm AKDT (03:44 UTC) | |
| 6,500 ft | 240° at 21 kt | +21 kt | -8 °C | 99 kt | 1 h 33 min | 7:46 pm AKDT (03:46 UTC) |
| 8,500 ft | 240° at 21 kt | +21 kt | -12 °C | 99 kt | 1 h 33 min | 7:46 pm AKDT (03:46 UTC) |
| 10,500 ft | 240° at 22 kt | +21 kt | -16 °C | 99 kt | 1 h 33 min | 7:46 pm AKDT (03:46 UTC) |
| 12,500 ft | 240° at 22 kt | +22 kt | -21 °C | 98 kt | 1 h 34 min | 7:47 pm AKDT (03:47 UTC) |
| 14,500 ft | 240° at 24 kt | +24 kt | -24 °C | 96 kt | 1 h 36 min | 7:49 pm AKDT (03:49 UTC) |
| 16,500 ft | 240° at 25 kt | +25 kt | -27 °C | 95 kt | 1 h 37 min | 7:50 pm AKDT (03:50 UTC) |
| 18,000 ft FL180 | 240° at 26 kt | +26 kt | -29 °C | 94 kt | 1 h 38 min | 7:51 pm AKDT (03:51 UTC) |
| 24,000 ft FL240 | 250° at 23 kt | +22 kt | -37 °C | 98 kt | 1 h 34 min | 7:47 pm AKDT (03:47 UTC) |
| 30,000 ft FL300 | 270° at 8 kt | +6 kt | -45 °C | 114 kt | 1 h 21 min | 7:34 pm AKDT (03:34 UTC) |
| 34,000 ft FL340 | 230° at 19 kt | +19 kt | -51 °C | 101 kt | 1 h 31 min | 7:44 pm AKDT (03:44 UTC) |
| 39,000 ft FL390 | 230° at 44 kt | +43 kt | -48 °C | 77 kt | 2 h | 8:13 pm AKDT (04:13 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| CDB | used from 0 nm out; 24 nm from the line | 230/16 | 240/21 -7° | 240/21 -13° | 240/22 -20° | 240/26 -29° | 250/23 -37° | 280/8 -45° | 230/19 -51° | 230/44 -48° |
| IKO | used from 145 nm out; 105 nm from the line | 260/21 | 260/22 -7° | 250/22 -14° | 250/22 -21° | 240/24 -31° | 230/16 -40° | 200/14 -46° | 230/24 -47° | 240/38 -46° |
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 |
|---|---|---|---|---|---|---|---|
| CDB Cold Bay, AK | departure | VFR Sky: a broken layer at 3,500 feet, overcast at 4,600 feet Weather: light rain | from the west (280°) at 11 knots | 10+ mi | 3,500 ft | 99 ft | 5:53 pm AKDT (01:53 UTC) |
| KFP False Pass, AK | 29 nm out, 8 nm south of the line | VFR Sky: overcast at 3,900 feet | from the north (350°) at 4 knots | 10+ mi | 3,900 ft | 18 ft | 01:56 UTC |
| 7AK Akutan, AK | 116 nm out, 6 nm south of the line | reported, no category | from the north-northwest (330°) at 8 knots | 4,300 ft | 129 ft | 01:55 UTC | |
| DUT Unalaska, AK | destination | VFR Sky: a few clouds at 2,500 feet, scattered clouds at 3,600 feet, a broken layer at 6,000 feet Weather: light rain | from the south-southwest (210°) at 12 knots, gusting to 24 | 10+ mi | 6,000 ft | 23 ft | 5:56 pm AKDT (01:56 UTC) |
The highest airport on this list sits at 129 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At DUT when you get there the forecast at the estimated arrival, 7:34 pm AKDT (03:34 UTC)
Wind from the southwest at 10 knots, visibility more than 6 miles, light rain showers, scattered clouds at 2,500 feet, a broken layer at 3,500 feet VFR
At times between Sun 4:00 pm AKDT (00:00 UTC) and 8:00 pm AKDT (04:00 UTC): wind from the southwest at 14 knots, gusting to 23
The whole forecast for DUT
- From Sun 4:00 pm AKDT (00:00 UTC): wind from the southwest at 10 knots, visibility more than 6 miles, light rain showers, scattered clouds at 2,500 feet, a broken layer at 3,500 feet
- At times between Sun 4:00 pm AKDT (00:00 UTC) and 8:00 pm AKDT (04:00 UTC): wind from the southwest at 14 knots, gusting to 23
The forecast for CDB, the departure
- From Sun 4:00 pm AKDT (00:00 UTC): wind from the west-southwest at 8 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, a broken layer at 4,000 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 CDB 7:58 pm AKDT (03:58 UTC), at DUT 8:15 pm AKDT (04:15 UTC) (civil twilight ends 8:51 pm AKDT (04:51 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: Cold Bay Airport, Unalaska Airport.