Nantucket Memorial to Westerly State Airport ACK → WST
79 nautical miles (91 statute miles) west on a straight line, true course 275°, about 289° magnetic at the departure end (variation 14W). At 120 knots that is 52 min at the quickest height in today's winds (4,500 ft, a 29-knot headwind), arriving about 3:32 am EDT (07:32 UTC), after sunset at the destination. Right now ACK is low IFR, wind from the south-southeast (160°) at 3 knots; WST is marginal VFR, wind from the north (360°) at 8 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: 5 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 E22E: thunderstorms (a convective SIGMET) up to 40,000 ft, moving from the southwest at 20 knots, until 3:55 am EDT (07:55 UTC). Near the route, 59 nm along the route.
as issued
WSUS31 KKCI 120555 MKCE WST 120555 CONVECTIVE SIGMET 22E VALID UNTIL 0755Z NY NJ PA DE MD VA DC WV AND MA RI DE NJ NY CSTL WTRS FROM 40E HTO-80SSW ACK-100ESE SIE-30SW CSN-40SSE JST-40E HTO AREA EMBD TS MOV FROM 24020KT. TOPS TO FL400.
- AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). 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 first 49 nm of the route.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 10,000 ft. Over the whole route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 30 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 ACK.
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 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 |
|---|---|---|---|---|---|---|
| 4,500 ft | 250° at 31 kt | +29 kt | 91 kt | 52 min | 3:32 am EDT (07:32 UTC) | |
| 6,500 ft | 270° at 37 kt | +37 kt | 15 °C | 83 kt | 57 min | 3:37 am EDT (07:37 UTC) |
| 8,500 ft | 270° at 38 kt | +38 kt | 11 °C | 82 kt | 58 min | 3:38 am EDT (07:38 UTC) |
| 10,500 ft | 270° at 39 kt | +39 kt | 7 °C | 81 kt | 59 min | 3:39 am EDT (07:39 UTC) |
| 12,500 ft | 270° at 40 kt | +40 kt | 3 °C | 80 kt | 59 min | 3:39 am EDT (07:39 UTC) |
| 14,500 ft | 260° at 41 kt | +39 kt | -1 °C | 81 kt | 59 min | 3:39 am EDT (07:39 UTC) |
| 16,500 ft | 250° at 43 kt | +38 kt | -5 °C | 82 kt | 58 min | 3:38 am EDT (07:38 UTC) |
| 18,000 ft FL180 | 240° at 46 kt | +38 kt | -8 °C | 82 kt | 58 min | 3:38 am EDT (07:38 UTC) |
| 24,000 ft FL240 | 230° at 52 kt | +37 kt | -17 °C | 83 kt | 57 min | 3:37 am EDT (07:37 UTC) |
| 30,000 ft FL300 | 240° at 74 kt | +61 kt | -31 °C | 59 kt | 1 h 20 min | 4:00 am EDT (08:00 UTC) |
| 34,000 ft FL340 | 240° at 83 kt | +68 kt | -41 °C | 52 kt | 1 h 31 min | 4:11 am EDT (08:11 UTC) |
| 39,000 ft FL390 | 240° at 91 kt | +75 kt | -53 °C | 45 kt | 1 h 45 min | 4:25 am EDT (08:25 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| ACK | used from 0 nm out; 25 nm from the line | 230/29 | 270/37 16° | 270/38 10° | 270/40 4° | 240/46 -8° | 230/52 -17° | 240/74 -31° | 240/83 -41° | 240/91 -53° |
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 |
|---|---|---|---|---|---|---|---|
| ACK Nantucket, MA | departure | low IFR Sky: overcast at 200 feet Weather: mist | from the south-southeast (160°) at 3 knots | 1.25 mi | 200 ft | 46 ft | 2:37 am EDT (06:37 UTC) |
| MVY Vineyard Haven, MA | 30 nm out, 8 nm northeast of the line, tower | low IFR Sky: overcast at 300 feet Weather: light rain | from the north-northeast (030°) at 11 knots | 10+ mi | 300 ft | 66 ft | 05:53 UTC |
| WST Westerly, RI | destination | marginal VFR Sky: a broken layer at 1,100 feet, overcast at 1,600 feet | from the north (360°) at 8 knots | 10+ mi | 1,100 ft | 81 ft | 2:37 am EDT (06:37 UTC) |
The highest airport on this list sits at 81 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At WST when you get there the forecast at the estimated arrival, 3:32 am EDT (07:32 UTC)
WST has no terminal forecast; use the nearest airport that does.
The forecast for ACK, the departure
- From Mon 2:00 am EDT (06:00 UTC): wind from the east at 16 knots, gusting to 23, visibility 3 miles, rain, mist, overcast at 300 feet
- From Mon 5:00 am EDT (09:00 UTC): wind from the north-northeast at 13 knots, gusting to 18, visibility 2 miles, mist, overcast at 300 feet
- From Mon 11:00 am EDT (15:00 UTC): wind from the north-northeast at 15 knots, gusting to 22, visibility more than 6 miles, a broken layer at 800 feet
- From Mon 4:00 pm EDT (20:00 UTC): wind from the north at 13 knots, visibility more than 6 miles, scattered clouds at 5,000 feet
- From Mon 8:00 pm EDT (00:00 UTC): wind from the north at 3 knots, visibility more than 6 miles, scattered clouds at 5,000 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 ACK 6:04 pm EDT (22:04 UTC), at WST 6:11 pm EDT (22:11 UTC) (civil twilight ends 6:39 pm EDT (22:39 UTC)). At 120 knots the arrival at WST is before sunrise there (6:55 am EDT (10:55 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: Nantucket Memorial, Westerly State Airport.