Boca Raton Airport to Nantucket Memorial BCT → ACK
1,022 nautical miles (1,177 statute miles) northeast on a straight line, true course 027°, about 032° magnetic at the departure end (variation 5W). At 120 knots that is 5 h 23 min at the quickest height in today's winds (34,000 ft, a 70-knot tailwind), arriving about 7:05 am EDT (11:05 UTC). 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 E20E: thunderstorms (a convective SIGMET) up to 44,000 ft, moving from the west at 20 knots, until 2:55 am EDT (06:55 UTC). Over the route from 159 to 288 nm out.
as issued
WSUS31 KKCI 120455 MKCE WST 120455 CONVECTIVE SIGMET 20E VALID UNTIL 0655Z FL GA CSTL WTRS FROM 180SE CHS-230SSE ILM-120ENE TRV-100NE TRV-180SE CHS AREA TS MOV FROM 26020KT. TOPS TO FL440. REF INTL SIGMET LIMA SERIES.
- SIGMET E17E: thunderstorms (a convective SIGMET) up to 44,000 ft, moving from the southwest at 25 knots, until 2:55 am EDT (06:55 UTC). Over the route from 506 to 725 nm out.
as issued
WSUS31 KKCI 120455 MKCE WST 120455 CONVECTIVE SIGMET 17E VALID UNTIL 0655Z NC VA CSTL WTRS FROM 160SE SIE-190SE ECG-140SE ILM-70E ORF-160SE SIE AREA TS MOV FROM 24025KT. TOPS TO FL440. REF INTL SIGMET LIMA SERIES.
- SIGMET E19E: thunderstorms (a convective SIGMET) up to 43,000 ft, moving from the southwest at 20 knots, until 2:55 am EDT (06:55 UTC). Near the route, 913 nm along the route.
as issued
WSUS31 KKCI 120455 MKCE WST 120455 CONVECTIVE SIGMET 19E VALID UNTIL 0655Z CT NY NJ PA DE MD VA DC WV AND DE NJ NY MD CT VA CSTL WTRS FROM 20NNW HTO-70SSE HTO-90SE SIE-20WNW LYH-40ESE AIR-20NNW HTO AREA EMBD TS MOV FROM 24020KT. TOPS TO FL430.
- SIGMET E18E: thunderstorms (a convective SIGMET) up to 30,000 ft, moving from the southwest at 35 knots, until 2:55 am EDT (06:55 UTC). Over the last 89 nm of the route.
as issued
WSUS31 KKCI 120455 MKCE WST 120455 CONVECTIVE SIGMET 18E VALID UNTIL 0655Z MA RI CT AND MA RI NY CSTL WTRS FROM 40E BOS-130SE ACK-170S ACK-50SE HTO-20NW PVD-40E BOS AREA EMBD TS MOV FROM 24035KT. TOPS TO FL300.
- AIRMET TANGO 1W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 437 to 596 nm out.
- 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 last 258 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 last 40 nm of the route.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 10,000 ft. 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 BCT.
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 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 7 forecast points nearest it (MIA, MLB, CHS, ILM, ORF, ACY, 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 | 250° at 18 kt | −14 kt | 134 kt | 7 h 38 min | 9:20 am EDT (13:20 UTC) | |
| 5,500 ft | 250° at 20 kt | −16 kt | 136 kt | 7 h 31 min | 9:13 am EDT (13:13 UTC) | |
| 7,500 ft | 250° at 24 kt | −19 kt | 12 °C | 139 kt | 7 h 21 min | 9:03 am EDT (13:03 UTC) |
| 9,500 ft | 240° at 27 kt | −23 kt | 10 °C | 143 kt | 7 h 09 min | 8:51 am EDT (12:51 UTC) |
| 11,500 ft | 240° at 29 kt | −25 kt | 7 °C | 145 kt | 7 h 03 min | 8:45 am EDT (12:45 UTC) |
| 13,500 ft | 240° at 31 kt | −28 kt | 3 °C | 148 kt | 6 h 54 min | 8:36 am EDT (12:36 UTC) |
| 15,500 ft | 240° at 34 kt | −30 kt | -1 °C | 150 kt | 6 h 49 min | 8:31 am EDT (12:31 UTC) |
| 17,500 ft | 240° at 37 kt | −33 kt | -5 °C | 153 kt | 6 h 41 min | 8:23 am EDT (12:23 UTC) |
| 18,000 ft FL180 | 240° at 38 kt | −34 kt | -6 °C | 154 kt | 6 h 38 min | 8:20 am EDT (12:20 UTC) |
| 24,000 ft FL240 | 240° at 47 kt | −41 kt | -17 °C | 161 kt | 6 h 21 min | 8:03 am EDT (12:03 UTC) |
| 30,000 ft FL300 | 220° at 63 kt | −61 kt | -31 °C | 181 kt | 5 h 39 min | 7:21 am EDT (11:21 UTC) |
| 34,000 ft FL340 | 220° at 71 kt | −70 kt | -40 °C | 190 kt | 5 h 23 min | 7:05 am EDT (11:05 UTC) |
| 39,000 ft FL390 | 230° at 65 kt | −62 kt | -51 °C | 182 kt | 5 h 37 min | 7:19 am EDT (11:19 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| MIA | used from 0 nm out; 61 nm from the line | 150/7 | 140/5 17° | 160/5 14° | L/V 9° | 230/8 -5° | 230/8 -17° | 150/11 -32° | 150/25 -41° | 180/29 -51° |
| MLB | used from 50 nm out; 72 nm from the line | 230/6 | 230/12 17° | 240/13 12° | 240/14 7° | 240/20 -5° | 240/24 -16° | 210/21 -32° | 190/33 -41° | 200/36 -52° |
| CHS | used from 248 nm out; 189 nm from the line | 280/21 | 270/23 12° | 280/28 11° | 260/35 6° | 250/41 -5° | 250/45 -16° | 230/59 -32° | 220/74 -40° | 230/67 -52° |
| ILM | used from 347 nm out; 153 nm from the line | 270/22 | 270/23 11° | 260/35 10° | 240/41 6° | 240/49 -5° | 240/61 -16° | 230/74 -30° | 220/79 -40° | 230/71 -51° |
| ORF | used from 546 nm out; 141 nm from the line | 250/24 | 230/32 11° | 220/37 10° | 220/37 6° | 230/47 -5° | 230/62 -17° | 220/89 -30° | 220/93 -40° | 230/77 -51° |
| ACY | used from 744 nm out; 134 nm from the line | 220/19 | 220/18 14° | 210/36 9° | 210/35 5° | 220/36 -8° | 240/49 -21° | 220/90 -31° | 230/103 -40° | 230/81 -50° |
| ACK | used from 893 nm out; 104 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 |
|---|---|---|---|---|---|---|---|
| BCT Boca Raton, FL | departure | no report just now | 12 ft | ||||
| DJT West Palm Beach, FL | 20 nm out, 8 nm west of the line, tower | no report just now | 19 ft | ||||
| ACK Nantucket, MA | destination | no report just now | 46 ft |
The highest airport on this list sits at 46 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, 7:05 am EDT (11:05 UTC)
ACK has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 5/2809 Palm Beach, FL, Monday, October 20, 2025 through Tuesday, October 20, 2026 Local 4 nm from the route, at the departure end · security · until 20 October · ZMA
Daylight
Sunset at BCT 6:55 pm EDT (22:55 UTC), at ACK 6:04 pm EDT (22:04 UTC) (civil twilight ends 6:32 pm EDT (22:32 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: Boca Raton Airport, Nantucket Memorial.