Block Island State Airport to Nantucket Memorial BID → ACK
69 nautical miles (79 statute miles) east on a straight line, true course 085°, about 100° magnetic at the departure end (variation 15W). At 120 knots that is 19 min at the quickest height in today's winds (34,000 ft, a 97-knot tailwind), arriving about 5:19 am EDT (09:19 UTC), after sunset at the destination. 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
- SIGMET E27E: thunderstorms (a convective SIGMET) up to 35,000 ft, moving from the southwest at 20 knots, until 5:55 am EDT (09:55 UTC). Over the last 59 nm of the route.
as issued
WSUS31 KKCI 120755 MKCE WST 120755 CONVECTIVE SIGMET 27E VALID UNTIL 0955Z MA RI NY AND MA RI DE NJ NY MD CT CSTL WTRS FROM 60NE ACK-90ESE ACK-200SSE HTO-160SE SIE-HTO-60NE ACK AREA EMBD TS MOV FROM 24020KT. TOPS TO FL350. REF INTL SIGMET LIMA SERIES.
- AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist, fog). Over the whole route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the whole route.
- AIRMET TANGO 4W: 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 10 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 BID.
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 08:00–15:00 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 (ACK). 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 | 320° at 16 kt | −9 kt | 129 kt | 32 min | 5:32 am EDT (09:32 UTC) | |
| 5,500 ft | 280° at 28 kt | −27 kt | 147 kt | 28 min | 5:28 am EDT (09:28 UTC) | |
| 7,500 ft | 260° at 34 kt | −34 kt | 12 °C | 154 kt | 27 min | 5:27 am EDT (09:27 UTC) |
| 9,500 ft | 260° at 36 kt | −36 kt | 8 °C | 156 kt | 27 min | 5:27 am EDT (09:27 UTC) |
| 11,500 ft | 260° at 31 kt | −31 kt | 5 °C | 151 kt | 27 min | 5:27 am EDT (09:27 UTC) |
| 13,500 ft | 260° at 33 kt | −32 kt | 1 °C | 152 kt | 27 min | 5:27 am EDT (09:27 UTC) |
| 15,500 ft | 250° at 36 kt | −35 kt | -4 °C | 155 kt | 27 min | 5:27 am EDT (09:27 UTC) |
| 17,500 ft | 250° at 40 kt | −39 kt | -8 °C | 159 kt | 26 min | 5:26 am EDT (09:26 UTC) |
| 18,000 ft FL180 | 250° at 41 kt | −40 kt | -9 °C | 160 kt | 26 min | 5:26 am EDT (09:26 UTC) |
| 24,000 ft FL240 | 250° at 49 kt | −47 kt | -21 °C | 167 kt | 25 min | 5:25 am EDT (09:25 UTC) |
| 30,000 ft FL300 | 240° at 92 kt | −83 kt | -34 °C | 203 kt | 20 min | 5:20 am EDT (09:20 UTC) |
| 34,000 ft FL340 | 240° at 107 kt | −97 kt | -42 °C | 217 kt | 19 min | 5:19 am EDT (09:19 UTC) |
| 39,000 ft FL390 | 240° at 94 kt | −85 kt | -52 °C | 205 kt | 20 min | 5:20 am EDT (09:20 UTC) |
Based on data from the 12th at 06:00 UTC; valid on the 12th at 12:00 UTC for use 08:00 to 15:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| ACK | used from 0 nm out; 44 nm from the line | 340/16 | 270/32 14° | 260/37 9° | 260/30 4° | 250/41 -9° | 250/49 -21° | 240/92 -34° | 240/107 -42° | 240/94 -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 |
|---|---|---|---|---|---|---|---|
| BID Block Island, RI | departure | no report just now | 107 ft | ||||
| MVY Vineyard Haven, MA | 49 nm out, 11 nm northwest of the line, tower | no report just now | 66 ft | ||||
| ACK Nantucket, MA | destination | no report just now | 46 ft |
The highest airport on this list sits at 107 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At ACK when you get there the forecast at the estimated arrival, 5:19 am EDT (09:19 UTC)
ACK 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 BID 6:10 pm EDT (22:10 UTC), at ACK 6:04 pm EDT (22:04 UTC) (civil twilight ends 6:32 pm EDT (22:32 UTC)). At 120 knots the arrival at ACK is before sunrise there (6:48 am EDT (10:48 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: Block Island State Airport, Nantucket Memorial.