Nantucket Memorial to Morrisville-Stowe State Airport ACK → MVL
227 nautical miles (261 statute miles) northwest on a straight line, true course 331°, about 345° magnetic at the departure end (variation 14W). At 120 knots that is 1 h 47 min at the quickest height in today's winds (24,000 ft, a 7-knot tailwind), arriving about 5:14 am EDT (09:14 UTC), after sunset at the destination. Right now ACK is low IFR, wind from the west (260°) at 6 knots; MVL is marginal VFR, wind from the southeast (140°) at 3 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: 2 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
- 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 first 207 nm of the 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 39 nm of the route.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 10,000 ft. Over the first 177 nm of the route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 207 nm of the route.
- AIRMET ZULU 1C: moderate icing up to 22,000 ft. Over the last 138 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 89 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
- UAL932 at 35,000 ft, 29 nm northeast, 12:34 am EDT (04:34 UTC): moderate turbulence, wind 240° at 69 knots. 39 nm along the route, 29 nm northeast of the line.
as filed, and in English
ARP UAL932 4206N 06957W 0434 F350 240/069KT TB MOD TURB IC
- Report
- a routine report filed through ARP
- UAL932 at 35,000 ft, 27 nm northeast, 12:33 am EDT (04:33 UTC): moderate turbulence. 39 nm along the route, 27 nm northeast of the line.
as filed, and in English
ARP UAL932 4206N 07001W 0433 F350 TB MODERATE SK CLEAR IC NONE
- Report
- a routine report filed through ARP
- UAL330 at 35,000 ft, 16 nm southwest, 12:30 am EDT (04:30 UTC): moderate turbulence, wind 235° at 92 knots. 128 nm along the route, 16 nm southwest of the line.
as filed, and in English
ARP UAL330 4257N 07145W 0430 F350 235/092KT TB MOD TURB CONT MOD CHOP IC
- Report
- a routine report filed through ARP
- B763 descending, 4 nm southwest, 2:21 am EDT (06:21 UTC): overcast above 40,000 ft. 118 nm along the route, 4 nm southwest of the line.
as filed, and in English
MHT UA /OV KMHT/TM 0621/FLDURD/TP B763/SK OVC004
- Report
- a routine report filed through MHT
- Where
- over KMHT
- Time
- 06:21 UTC
- Height
- during the descent
- Aircraft
- B763
- Sky
- overcast from 400 ft
- B763 descending, 4 nm southwest, 1:55 am EDT (05:55 UTC): a routine report with nothing remarked on. 118 nm along the route, 4 nm southwest of the line.
as filed, and in English
MHT UA /OV RWY 35/TM 0555/FLDURD/TP B763/SK 004-005 FT
- Report
- a routine report filed through MHT
- Where
- runway 35
- Time
- 05:55 UTC
- Height
- during the descent
- Aircraft
- B763
- Sky
- from 400 ft to 500 ft ft
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 3 forecast points nearest it (ACK, BOS, BML). 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 | 230° at 13 kt | −2 kt | 122 kt | 1 h 52 min | 5:19 am EDT (09:19 UTC) | |
| 6,500 ft | 250° at 18 kt | +3 kt | 10 °C | 117 kt | 1 h 56 min | 5:23 am EDT (09:23 UTC) |
| 8,500 ft | 270° at 22 kt | +11 kt | 8 °C | 109 kt | 2 h 05 min | 5:32 am EDT (09:32 UTC) |
| 10,500 ft | 270° at 24 kt | +12 kt | 5 °C | 108 kt | 2 h 06 min | 5:33 am EDT (09:33 UTC) |
| 12,500 ft | 260° at 26 kt | +10 kt | 1 °C | 110 kt | 2 h 04 min | 5:31 am EDT (09:31 UTC) |
| 14,500 ft | 260° at 30 kt | +8 kt | -3 °C | 112 kt | 2 h 02 min | 5:29 am EDT (09:29 UTC) |
| 16,500 ft | 250° at 33 kt | +6 kt | -7 °C | 114 kt | 1 h 59 min | 5:26 am EDT (09:26 UTC) |
| 18,000 ft FL180 | 250° at 36 kt | +5 kt | -10 °C | 115 kt | 1 h 58 min | 5:25 am EDT (09:25 UTC) |
| 24,000 ft FL240 | 230° at 52 kt | −7 kt | -19 °C | 127 kt | 1 h 47 min | 5:14 am EDT (09:14 UTC) |
| 30,000 ft FL300 | 240° at 69 kt | −6 kt | -34 °C | 126 kt | 1 h 48 min | 5:15 am EDT (09:15 UTC) |
| 34,000 ft FL340 | 240° at 86 kt | −1 kt | -42 °C | 121 kt | 1 h 53 min | 5:20 am EDT (09:20 UTC) |
| 39,000 ft FL390 | 240° at 90 kt | −1 kt | -53 °C | 121 kt | 1 h 53 min | 5:20 am EDT (09:20 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° |
| BOS | used from 49 nm out; 7 nm from the line | 110/20 | 200/26 12° | 280/24 8° | 260/29 3° | 250/47 -10° | 230/59 -19° | 230/74 -33° | 240/95 -41° | 240/96 -53° |
| BML | used from 148 nm out; 60 nm from the line | 260/22 | 300/13 8° | 280/13 4° | 260/13 0° | 260/16 -11° | 240/45 -21° | 240/59 -36° | 240/77 -44° | 240/83 -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: sky obscured at 300 feet Weather: fog | from the west (260°) at 6 knots | 0.5 mi | 300 ft | 46 ft | 3:21 am EDT (07:21 UTC) |
| HYA Hyannis, MA | 30 nm out, 4 nm east of the line, tower | IFR Sky: overcast at 500 feet Weather: light rain, mist | from the north-northeast (030°) at 11 knots | 3 mi | 500 ft | 54 ft | 06:56 UTC |
| BOS Boston, MA | 79 nm out, 5 nm southwest of the line, tower | IFR Sky: a broken layer at 500 feet, overcast at 1,300 feet Weather: light rain, mist | from the north (010°) at 10 knots | 5 mi | 500 ft | 19 ft | 06:54 UTC |
| LWM Lawrence, MA | 99 nm out, 2 nm north of the line, tower | IFR Sky: overcast at 500 feet Weather: light rain | from the north-northeast (020°) at 10 knots | 10+ mi | 500 ft | 147 ft | 06:54 UTC |
| LEB Lebanon, NH | 177 nm out, 17 nm southwest of the line, tower | IFR Sky: a broken layer at 500 feet, a broken layer at 3,100 feet, overcast at 7,000 feet Weather: light rain, mist | calm | 6 mi | 500 ft | 603 ft | 07:22 UTC |
| MPV Barre/Montpelier, VT | 207 nm out, 8 nm west of the line | low IFR Sky: a broken layer at 6,000 feet, a broken layer at 7,500 feet, overcast at 8,500 feet Weather: rain, mist | calm | 0.75 mi | 6,000 ft | 1,165 ft | 07:10 UTC |
| MVL Morrisville, VT | destination | marginal VFR Sky: overcast at 2,700 feet Weather: light rain | from the southeast (140°) at 3 knots | 10+ mi | 2,700 ft | 732 ft | 2:54 am EDT (06:54 UTC) |
The highest airport on this list sits at 1,165 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At MVL when you get there the forecast at the estimated arrival, 5:14 am EDT (09:14 UTC)
MVL 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
- 6/8802 Foxborough, MA, Saturday, October 17, 2026 through Sunday, October 18, 2026 UTC 22 nm from the route, 69 nm along the route · drones kept away from a public gathering · starts Saturday 17 October · ZBW
Daylight
Sunset at ACK 6:04 pm EDT (22:04 UTC), at MVL 6:11 pm EDT (22:11 UTC) (civil twilight ends 6:40 pm EDT (22:40 UTC)). At 120 knots the arrival at MVL is before sunrise there (7:01 am EDT (11:01 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, Morrisville-Stowe State Airport.