Hooper Bay Airport to St. Mary'S Airport HPB → KSM
87 nautical miles (100 statute miles) northeast on a straight line, true course 067°, about 059° magnetic at the departure end (variation 8E). At 120 knots that is 36 min at the quickest height in today's winds (30,000 ft, a 27-knot tailwind), arriving about 5:13 pm AKDT (01:13 UTC). Right now HPB is VFR, wind from the south-southwest (200°) at 16 knots; KSM is marginal VFR, wind from the south (190°) at 14 knots, gusting to 18. 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: 46 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 HPB.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- C208 at 1,500 ft, 7 nm south, 2:24 pm AKDT (22:24 UTC): no turbulence, no icing, overcast from 1,500 ft to 3,000 ft, remarks: durc-bet zan. 19 nm along the route, 7 nm south of the line.
as filed, and in English
VAK UA /OV VAK/TM 2224/FL015/TP C208/SK OVC015 TOP030/TB NEG/IC NEG/RM DURC-BET/ ZAN
- Report
- a routine report filed through VAK
- Where
- over VAK
- Time
- 22:24 UTC
- Height
- at 1,500 ft
- Aircraft
- C208
- Sky
- overcast from 1,500 ft, tops 3,000 ft
- Turbulence
- none
- Icing
- none
- Remarks
- durc-bet zan
- C208 at 9,000 ft, 0 nm southeast, 2:29 pm AKDT (22:29 UTC): no turbulence, no icing, a broken layer from 1,500 ft to 4,000 ft, remarks: DURD-RNAV17 zan. At the destination end, 0 nm southeast of the line.
as filed, and in English
KSM UA /OV KSM/TM 2229/FL090/TP C208/SK BKN015 TOP040/TB NEG/IC NEG/RM DURD-RNAV17/ ZAN
- Report
- a routine report filed through KSM
- Where
- over KSM
- Time
- 22:29 UTC
- Height
- at 9,000 ft
- Aircraft
- C208
- Sky
- a broken layer from 1,500 ft, tops 4,000 ft
- Turbulence
- none
- Icing
- none
- Remarks
- DURD-RNAV17 zan
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 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 1 forecast point nearest it (CZF). 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 | 200° at 27 kt | −18 kt | 138 kt | 38 min | 5:15 pm AKDT (01:15 UTC) | |
| 5,500 ft | 200° at 27 kt | −18 kt | 138 kt | 38 min | 5:15 pm AKDT (01:15 UTC) | |
| 7,500 ft | 200° at 27 kt | −18 kt | -10 °C | 138 kt | 38 min | 5:15 pm AKDT (01:15 UTC) |
| 9,500 ft | 200° at 26 kt | −17 kt | -15 °C | 137 kt | 38 min | 5:15 pm AKDT (01:15 UTC) |
| 11,500 ft | 200° at 24 kt | −16 kt | -19 °C | 136 kt | 38 min | 5:15 pm AKDT (01:15 UTC) |
| 13,500 ft | 200° at 22 kt | −15 kt | -23 °C | 135 kt | 39 min | 5:16 pm AKDT (01:16 UTC) |
| 15,500 ft | 200° at 21 kt | −14 kt | -27 °C | 134 kt | 39 min | 5:16 pm AKDT (01:16 UTC) |
| 17,500 ft | 200° at 20 kt | −14 kt | -31 °C | 134 kt | 39 min | 5:16 pm AKDT (01:16 UTC) |
| 18,000 ft FL180 | 200° at 20 kt | −13 kt | -32 °C | 133 kt | 39 min | 5:16 pm AKDT (01:16 UTC) |
| 24,000 ft FL240 | 210° at 23 kt | −18 kt | -44 °C | 138 kt | 38 min | 5:15 pm AKDT (01:15 UTC) |
| 30,000 ft FL300 | 250° at 27 kt | −27 kt | -47 °C | 147 kt | 36 min | 5:13 pm AKDT (01:13 UTC) |
| 34,000 ft FL340 | 250° at 27 kt | −27 kt | -48 °C | 147 kt | 36 min | 5:13 pm AKDT (01:13 UTC) |
| 39,000 ft FL390 | 240° at 25 kt | −25 kt | -49 °C | 145 kt | 36 min | 5:13 pm AKDT (01:13 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| CZF | used from 0 nm out; 20 nm from the line | 200/27 | 200/27 -7° | 200/26 -14° | 200/23 -20° | 200/20 -32° | 210/23 -44° | 250/27 -47° | 250/27 -48° | 240/25 -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 |
|---|---|---|---|---|---|---|---|
| HPB Hooper Bay, AK | departure | VFR Sky: a few clouds at 1,900 feet, scattered clouds at 2,700 feet, a broken layer at 3,600 feet | from the south-southwest (200°) at 16 knots | 10+ mi | 3,600 ft | 19 ft | 3:56 pm AKDT (23:56 UTC) |
| VAK Chevak, AK | 19 nm out, 7 nm south of the line | marginal VFR Sky: a broken layer at 2,500 feet, a broken layer at 3,200 feet | from the south (180°) at 15 knots | 10+ mi | 2,500 ft | 60 ft | 23:56 UTC |
| KSM St Mary'S, AK | destination | marginal VFR Sky: a broken layer at 1,800 feet, a broken layer at 2,400 feet, overcast at 2,800 feet Weather: light rain, mist | from the south (190°) at 14 knots, gusting to 18 | 6 mi | 1,800 ft | 314 ft | 3:56 pm AKDT (23:56 UTC) |
The highest airport on this list sits at 314 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At KSM when you get there the forecast at the estimated arrival, 5:13 pm AKDT (01:13 UTC)
KSM has no terminal forecast; use the nearest airport that does.
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 HPB 8:00 pm AKDT (04:00 UTC), at KSM 7:48 pm AKDT (03:48 UTC) (civil twilight ends 8:33 pm AKDT (04:33 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: Hooper Bay Airport, St. Mary'S Airport.