Rampart Airport to Barter Island Airport RMP → BTI
313 nautical miles (360 statute miles) northeast on a straight line, true course 025°, about 001° magnetic at the departure end (variation 24E). At 120 knots that is 2 h 10 min at the quickest height in today's winds (30,000 ft, a 24-knot tailwind), arriving about 11:21 pm AKDT (07:21 UTC), after sunset at the destination. Right now BTI is low IFR, wind from the west-southwest (240°) at 6 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.
Turbulence No turbulence warning in force along the route. No pilot has reported turbulence near the line in the last three hours. The government's turbulence forecast map ↗
Icing No icing warning in force along the route. No pilot has reported icing near the line in the last three hours. The freezing level is below 7,500 ft, the lowest forecast height, so any cloud could carry ice. The government's icing forecast map ↗
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 RMP.
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 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 (BTT, FYU, BTI). 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 | 260° at 12 kt | −8 kt | 128 kt | 2 h 27 min | 11:38 pm AKDT (07:38 UTC) | |
| 5,500 ft | 260° at 15 kt | −10 kt | 130 kt | 2 h 24 min | 11:35 pm AKDT (07:35 UTC) | |
| 7,500 ft | 260° at 15 kt | −10 kt | -11 °C | 130 kt | 2 h 24 min | 11:35 pm AKDT (07:35 UTC) |
| 9,500 ft | 260° at 16 kt | −11 kt | -15 °C | 131 kt | 2 h 23 min | 11:34 pm AKDT (07:34 UTC) |
| 11,500 ft | 250° at 16 kt | −11 kt | -19 °C | 131 kt | 2 h 23 min | 11:34 pm AKDT (07:34 UTC) |
| 13,500 ft | 250° at 17 kt | −13 kt | -24 °C | 133 kt | 2 h 21 min | 11:32 pm AKDT (07:32 UTC) |
| 15,500 ft | 250° at 18 kt | −14 kt | -28 °C | 134 kt | 2 h 20 min | 11:31 pm AKDT (07:31 UTC) |
| 17,500 ft | 250° at 20 kt | −15 kt | -32 °C | 135 kt | 2 h 19 min | 11:30 pm AKDT (07:30 UTC) |
| 18,000 ft FL180 | 250° at 20 kt | −16 kt | -33 °C | 136 kt | 2 h 18 min | 11:29 pm AKDT (07:29 UTC) |
| 24,000 ft FL240 | 240° at 24 kt | −21 kt | -43 °C | 141 kt | 2 h 13 min | 11:24 pm AKDT (07:24 UTC) |
| 30,000 ft FL300 | 250° at 34 kt | −24 kt | -55 °C | 144 kt | 2 h 10 min | 11:21 pm AKDT (07:21 UTC) |
| 34,000 ft FL340 | 260° at 32 kt | −18 kt | -57 °C | 138 kt | 2 h 16 min | 11:27 pm AKDT (07:27 UTC) |
| 39,000 ft FL390 | 260° at 24 kt | −16 kt | -52 °C | 136 kt | 2 h 18 min | 11:29 pm AKDT (07:29 UTC) |
Based on data from the 13th at 00:00 UTC; valid on the 13th 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| BTT | used from 0 nm out; 76 nm from the line | 240/6 | 250/9 -7° | 240/12 -14° | 230/16 -20° | 230/23 -34° | 230/27 -42° | 260/41 -53° | 270/43 -58° | 250/25 -53° |
| FYU | used from 98 nm out; 77 nm from the line | 250/13 | 250/17 -7° | 250/17 -13° | 250/15 -20° | 250/17 -32° | 230/17 -43° | 260/20 -54° | 270/22 -58° | 250/26 -51° |
| BTI | used from 196 nm out; 93 nm from the line | 270/15 | 260/19 -8° | 270/19 -15° | 270/19 -21° | 260/22 -33° | 250/29 -44° | 240/41 -57° | 250/33 -55° | 270/23 -52° |
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 |
|---|---|---|---|---|---|---|---|
| RMP Rampart, AK | departure | no report just now | 306 ft | ||||
| SVS Stevens Village, AK | 39 nm out, 11 nm southeast of the line | no report just now | 328 ft | ||||
| WCR Chandalar Lake, AK | 127 nm out, 17 nm west of the line | no report just now | 1,920 ft | ||||
| ARC Arctic Village, AK | 186 nm out, 25 nm east of the line | IFR Sky: overcast at 800 feet | from the north-northwest (330°) at 3 knots | 10+ mi | 800 ft | 2,092 ft | 04:56 UTC |
| BTI Barter Island, AK | destination | low IFR Sky: overcast at 300 feet | from the west-southwest (240°) at 6 knots | 10+ mi | 300 ft | 55 ft | 8:56 pm AKDT (04:56 UTC) |
The highest airport on this list sits at 2,092 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
The codes as issued, and in English, for every airport in the table
ARC Arctic Village, AK
the observation as issued, and in English
METAR PARC 130456Z AUTO 33003KT 10SM OVC008 M03/M04 A2956 RMK AO2 SLP062 T10281044 FZRANO TSNO
- METAR
- a routine hourly observation
- PARC
- the station, PARC
- 130456Z
- observed 04:56 UTC on the 13th
- AUTO
- fully automated report, nobody checked it
- 33003KT
- wind from the north-northwest at 3 knots
- 10SM
- visibility 10 miles
- OVC008
- overcast at 800 feet
- M03/M04
- temperature -3 °C (27 °F), dew point -4 °C (25 °F)
- A2956
- altimeter setting 29.56 inches of mercury
- RMK
- remarks follow
- AO2
- automated station with a precipitation sensor
- SLP062
- sea-level pressure 1006.2 hPa
- T10281044
- temperature -2.8 °C (27 °F), dew point -4.4 °C (24 °F)
- FZRANO TSNO
- the freezing-rain sensor is not working, the thunderstorm sensor is not working
BTI Barter Island, AK
the observation as issued, and in English
METAR PABA 130456Z AUTO 24006KT 10SM OVC003 M02/M02 A2957 RMK AO2 SNE12 CIG 001V004 SLP031 P0000 T10171017 FZRANO TSNO $
- METAR
- a routine hourly observation
- PABA
- the station, PABA
- 130456Z
- observed 8:56 pm AKDT (04:56 UTC)
- AUTO
- fully automated report, nobody checked it
- 24006KT
- wind from the west-southwest at 6 knots
- 10SM
- visibility 10 miles
- OVC003
- overcast at 300 feet
- M02/M02
- temperature -2 °C (28 °F), dew point -2 °C (28 °F)
- A2957
- altimeter setting 29.57 inches of mercury
- RMK
- remarks follow
- AO2
- automated station with a precipitation sensor
- SNE12
- snow ended 12 minutes past the hour
- CIG 001V004
- ceiling varying between 100 and 400 feet
- SLP031
- sea-level pressure 1003.1 hPa
- P0000
- a trace of precipitation in the last hour
- T10171017
- temperature -1.7 °C (29 °F), dew point -1.7 °C (29 °F)
- FZRANO TSNO $
- the freezing-rain sensor is not working, the thunderstorm sensor is not working, the station needs maintenance
At BTI when you get there the forecast at the estimated arrival, 11:21 pm AKDT (07:21 UTC)
BTI 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.
Notices to air missions closures and things out of service at both ends; airspace, navigation aids and obstructions near the line
RMP: 4 notices in force. all of them, grouped →
BTI: 6 notices in force. all of them, grouped →
No airspace, navigation-aid or obstruction notice near the line.
From the FAA's notice service (NOTAMs), the site's copy refreshed every few minutes; last checked 2 minutes ago. The FAA has so far issued eFlight its test feed, which misses some notices (checked against the FAA's own search on 12 October: about a third missing at Santa Barbara and Burbank, none at Atlanta or Las Vegas); the request for the full feed is with the FAA. Times are local to the field. This is for planning; the legal briefing comes from Flight Service or the FAA's own tools.
Daylight
Sunset at RMP 6:43 pm AKDT (02:43 UTC), at BTI 6:00 pm AKDT (02:00 UTC) (civil twilight ends 7:02 pm AKDT (03:02 UTC)). At 120 knots the arrival at BTI is after sunset there (6:04 pm AKDT (02:04 UTC)).
Each restriction opens the FAA's own page with the exact area, heights and times.
The wind over the route live wind map, from Windy.com · drag the time bar for the coming hours; the level menu changes the height
Colours show wind speed, the moving lines its direction, at the surface unless you pick a height. Map and forecast by Windy.com; a second opinion beside the government's winds-aloft table above.
Radar and forecast charts for the regions crossed government pictures, the latest each time the page loads · the turbulence and icing forecasts: turbulence ↗ · icing ↗
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: Rampart Airport, Barter Island Airport.