Plan a flight · Sun 7:48 pm EDT (23:48 UTC)

Nantucket Memorial to Ronald Reagan Washington Ntl Airport ACK → DCA

351 nautical miles (404 statute miles) west on a straight line, true course 248°, about 262° magnetic at the departure end (variation 14W). At 120 knots that is 3 h 08 min at the quickest height in today's winds (4,500 ft, a 8-knot headwind), arriving about 10:56 pm EDT (02:56 UTC), after sunset at the destination. Right now ACK is VFR, wind from the east (080°) at 11 knots; DCA is IFR, wind from the north-northeast (020°) at 9 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: 537 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 E12E: thunderstorms (a convective SIGMET) up to 34,000 ft, moving from the southwest at 30 knots, until 8:55 pm EDT (00:55 UTC). Over the last 146 nm of the route.

as issued

WSUS31 KKCI 112255
MKCE WST 112255
CONVECTIVE SIGMET 12E
VALID UNTIL 0055Z
NJ PA DE MD VA DC WV AND NJ CSTL WTRS
FROM 30WNW SAX-40ESE CYN-20SW DCA-50SSE JST-30WNW SAX
AREA EMBD TS MOV FROM 24030KT. TOPS TO FL340.

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 2W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the first 293 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

BCS3 at 8,000 ft, 32 nm north, 6:58 pm EDT (22:58 UTC): moderate turbulence, remarks: during the descent. 98 nm along the route, 32 nm north of the line.
as filed, and in English
```
JPX UA /OV JPX360010/TM 2258/FL080/TP BCS3/TB MOD/RM DURD
```
Report
a routine report filed through JPX
Where
10 nm north (360°) of JPX
Time
22:58 UTC
Height
at 8,000 ft
Aircraft
BCS3
Turbulence
moderate
Remarks
during the descent
TBM9 descending, 28 nm northwest, 7:45 pm EDT (23:45 UTC): moderate turbulence, a broken layer above 700 ft. 137 nm along the route, 28 nm northwest of the line.
as filed, and in English
```
ISP UA /OV ISP/TM 2345/FLDURD/TP TBM9/SK BKN007/TB MOD
```
Report
a routine report filed through ISP
Where
over ISP
Time
23:45 UTC
Height
during the descent
Aircraft
TBM9
Sky
a broken layer from 700 ft
Turbulence
moderate
TBM9 descending, 28 nm northwest, 6:55 pm EDT (22:55 UTC): moderate turbulence, a broken layer above 700 ft. 137 nm along the route, 28 nm northwest of the line.
as filed, and in English
```
ISP UA /OV ISP/TM 2255/FLDURD/TP TBM9/SK BKN007/TB MOD
```
Report
a routine report filed through ISP
Where
over ISP
Time
22:55 UTC
Height
during the descent
Aircraft
TBM9
Sky
a broken layer from 700 ft
Turbulence
moderate
A32N , 32 nm northwest, 7:01 pm EDT (23:01 UTC): moderate turbulence. 166 nm along the route, 32 nm northwest of the line.
as filed, and in English
```
JFK UA /OV JFK10008/TM 2301/FL3000/TP A32N/TB MOD TURB
```
Report
a routine report filed through JFK
Where
JFK10008
Time
23:01 UTC
Height
at 300,000 ft
Aircraft
A32N
Turbulence
moderate turbulence
A333 at 3,000 ft, 8 nm north, 7:10 pm EDT (23:10 UTC): moderate turbulence. 176 nm along the route, 8 nm north of the line.
as filed, and in English
```
JFK UA /OV JFK180025/TM 2310/FL030/TP A333/TB MOD TURB
```
Report
a routine report filed through JFK
Where
25 nm south (180°) of JFK
Time
23:10 UTC
Height
at 3,000 ft
Aircraft
A333
Turbulence
moderate turbulence
B38M at 25,000 ft, 18 nm northwest, 6:25 pm EDT (22:25 UTC): moderate turbulence. 234 nm along the route, 18 nm northwest of the line.
as filed, and in English
```
TEB UA /OV 3958N 07457W/TM 2225/FL250/TP B38M/TB MOD
```
Report
a routine report filed through TEB
Where
3958N 07457W
Time
22:25 UTC
Height
at 25,000 ft
Aircraft
B38M
Turbulence
moderate
B764 at 35,000 ft, 30 nm south, 7:18 pm EDT (23:18 UTC): light to moderate turbulence. At the departure end, 30 nm south of the line.
as filed, and in English
```
ACK UA /OV ACK200035/TM 2318/FL350/TP B764/TB LGT OCNL MOD
```
Report
a routine report filed through ACK
Where
35 nm south (200°) of ACK
Time
23:18 UTC
Height
at 35,000 ft
Aircraft
B764
Turbulence
light occasional moderate
BE40 at 16,000 ft, 16 nm northwest, 7:02 pm EDT (23:02 UTC): light to moderate chop turbulence. At the departure end, 16 nm northwest of the line.
as filed, and in English
```
MVY UA /OV MVY090010/TM 2302/FL160/TP BE40/TB LGT OCNL MOD CHOP
```
Report
a routine report filed through MVY
Where
10 nm east (090°) of MVY
Time
23:02 UTC
Height
at 16,000 ft
Aircraft
BE40
Turbulence
light occasional moderate chop
PC12 at 11,000 ft, 7 nm north, 5:21 pm EDT (21:21 UTC): light turbulence, imc, heavy rain. 39 nm along the route, 7 nm north of the line.
as filed, and in English
```
MVY UA /OV SEY110030/TM 2121/FL110/TP PC12/SK IMC/WX +RA/TB LGT -MOD CHOP
```
Report
a routine report filed through MVY
Where
30 nm east (110°) of SEY
Time
21:21 UTC
Height
at 11,000 ft
Aircraft
PC12
Sky
instrument conditions
Weather
heavy rain
Turbulence
light moderate chop
BCS3 at 14,000 ft, 50 nm north, 6:45 pm EDT (22:45 UTC): light to moderate turbulence from 9,000 ft to 14,000 ft. 49 nm along the route, 50 nm north of the line.
as filed, and in English
```
BOS UA /OV PROVI/TM 2245/FL140/TP BCS3/TB LGT TO MOD 140-090
```
Report
a routine report filed through BOS
Where
provi
Time
22:45 UTC
Height
at 14,000 ft
Aircraft
BCS3
Turbulence
light to moderate from 14,000 ft to 9,000 ft
GLF5 at 14,000 ft, 22 nm north, 4:59 pm EDT (20:59 UTC): light to moderate chop turbulence. 68 nm along the route, 22 nm north of the line.
as filed, and in English
```
BID UA /OV SEY/TM 2059/FL140/TP GLF5/TB LGT-MOD CHOP
```
Report
a routine report filed through BID
Where
over SEY
Time
20:59 UTC
Height
at 14,000 ft
Aircraft
GLF5
Turbulence
light to moderate chop
GL5T at 14,000 ft, 22 nm north, 4:54 pm EDT (20:54 UTC): light to moderate rime icing, 0 °C. 68 nm along the route, 22 nm north of the line.
as filed, and in English
```
BID UA /OV SEY/TM 2054/FL140/TP GL5T/TA 00/IC LGT-MOD RIME
```
Report
a routine report filed through BID
Where
over SEY
Time
20:54 UTC
Height
at 14,000 ft
Aircraft
GL5T
Temperature
0 °C
Icing
light to moderate rime
GL5T at 14,000 ft, 22 nm north, 4:52 pm EDT (20:52 UTC): light to moderate chop turbulence. 68 nm along the route, 22 nm north of the line.
as filed, and in English
```
BID UA /OV SEY/TM 2052/FL140/TP GL5T/TB INTMT LGT-MOD CHOP
```
Report
a routine report filed through BID
Where
over SEY
Time
20:52 UTC
Height
at 14,000 ft
Aircraft
GL5T
Turbulence
intermittent light to moderate chop
E55P at 2,000 ft, 19 nm northwest, 7:02 pm EDT (23:02 UTC): remarks: during the climb. 98 nm along the route, 19 nm northwest of the line.
as filed, and in English
```
JPX UA /OV JPX170003/TM 2302/FL020/TP E55P/SK BASES 007/RM DURC
```
Report
a routine report filed through JPX
Where
3 nm south (170°) of JPX
Time
23:02 UTC
Height
at 2,000 ft
Aircraft
E55P
Sky
bases 700 ft
Remarks
during the climb

16 more routine reports are on the map.

Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 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 4 forecast points nearest it (ACK, JFK, ACY, RIC). 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	180° at 22 kt	+8 kt		112 kt	3 h 08 min	10:56 pm EDT (02:56 UTC)
6,500 ft	200° at 25 kt	+15 kt	12 °C	105 kt	3 h 21 min	11:09 pm EDT (03:09 UTC)
8,500 ft	220° at 26 kt	+23 kt	11 °C	97 kt	3 h 37 min	11:25 pm EDT (03:25 UTC)
10,500 ft	230° at 29 kt	+27 kt	7 °C	93 kt	3 h 46 min	11:34 pm EDT (03:34 UTC)
12,500 ft	230° at 31 kt	+31 kt	4 °C	89 kt	3 h 57 min	11:45 pm EDT (03:45 UTC)
14,500 ft	240° at 35 kt	+34 kt	0 °C	86 kt	4 h 05 min	11:53 pm EDT (03:53 UTC)
16,500 ft	240° at 38 kt	+38 kt	-4 °C	82 kt	4 h 17 min	12:05 am EDT (04:05 UTC)
18,000 ft FL180	240° at 41 kt	+40 kt	-7 °C	80 kt	4 h 23 min	12:11 am EDT (04:11 UTC)
24,000 ft FL240	240° at 50 kt	+50 kt	-17 °C	70 kt	5 h 01 min	12:49 am EDT (04:49 UTC)
30,000 ft FL300	230° at 70 kt	+68 kt	-31 °C	52 kt	6 h 45 min	2:33 am EDT (06:33 UTC)
34,000 ft FL340	230° at 77 kt	+75 kt	-41 °C	45 kt	7 h 48 min	3:36 am EDT (07:36 UTC)
39,000 ft FL390	240° at 85 kt	+84 kt	-54 °C	36 kt	9 h 45 min	5:33 am EDT (09:33 UTC)

Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 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; 24 nm from the line	150/19	170/30 8°	210/31 9°	230/42 3°	250/44 -7°	250/50 -17°	240/62 -32°	250/71 -42°	250/86 -55°
JFK	used from 98 nm out; 58 nm from the line	140/43	170/35 13°	230/18 9°	250/25 5°	240/40 -7°	230/50 -17°	230/75 -31°	230/78 -41°	230/88 -53°
ACY	used from 195 nm out; 21 nm from the line	230/15	230/22 15°	230/31 11°	230/27 6°	230/40 -7°	230/51 -17°	230/71 -31°	230/81 -41°	230/86 -53°
RIC	used from 342 nm out; 85 nm from the line	190/33	200/29 14°	210/31 12°	210/38 6°	230/42 -7°	230/68 -16°	220/84 -29°	220/86 -40°	220/81 -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
ACK Nantucket, MA	departure	VFR Sky: a few clouds at 2,400 feet, scattered clouds at 3,400 feet, a broken layer at 4,300 feet Weather: light rain	from the east (080°) at 11 knots	7 mi	4,300 ft	46 ft	6:53 pm EDT (22:53 UTC)
MVY Vineyard Haven, MA	20 nm out, 17 nm northwest of the line, tower	marginal VFR Sky: a broken layer at 2,200 feet, a broken layer at 3,200 feet, overcast at 4,000 feet Weather: heavy rain	from the east (080°) at 12 knots	10+ mi	2,200 ft	66 ft	23:12 UTC
BID Block Island, RI	68 nm out, 22 nm north of the line	IFR Sky: overcast at 700 feet Weather: rain, mist	from the east-northeast (060°) at 14 knots, gusting to 23	2.5 mi	700 ft	107 ft	23:36 UTC
FOK Westhampton Beach, NY	117 nm out, 22 nm northwest of the line, tower	IFR Sky: a broken layer at 700 feet, overcast at 1,400 feet Weather: light rain, mist	from the east-northeast (070°) at 12 knots, gusting to 21	3 mi	700 ft	66 ft	23:36 UTC
MJX Toms River, NJ	205 nm out, 5 nm west of the line	low IFR Sky: overcast at 400 feet Weather: light rain	from the northeast (050°) at 12 knots	6 mi	400 ft	86 ft	22:56 UTC
ACY Atlantic City, NJ	234 nm out, 17 nm southeast of the line, tower	low IFR Sky: overcast at 200 feet Weather: mist	calm	0.5 mi	200 ft	74 ft	22:54 UTC
ILG Wilmington, DE	273 nm out, 16 nm north of the line, tower	IFR Sky: a broken layer at 500 feet, overcast at 1,300 feet Weather: rain	from the northeast (050°) at 15 knots	5 mi	500 ft	79 ft	22:51 UTC
BWI Baltimore, MD	332 nm out, 11 nm north of the line, tower	low IFR Sky: overcast at 400 feet Weather: light drizzle, mist	from the north-northeast (030°) at 6 knots	3 mi	400 ft	143 ft	23:37 UTC
DCA Washington, DC	destination	IFR Sky: overcast at 700 feet	from the north-northeast (020°) at 9 knots	10+ mi	700 ft	14 ft	6:52 pm EDT (22:52 UTC)

The highest airport on this list sits at 143 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At DCA when you get there the forecast at the estimated arrival, 10:56 pm EDT (02:56 UTC)

Wind from the northeast at 5 knots, visibility 2 miles, rain showers, mist, overcast at 500 feet IFR

The whole forecast for DCA

From Sun 8:00 pm EDT (00:00 UTC): wind from the north-northeast at 9 knots, visibility 5 miles, light rain showers, mist, overcast at 700 feet
From Sun 10:00 pm EDT (02:00 UTC): wind from the northeast at 5 knots, visibility 2 miles, rain showers, mist, overcast at 500 feet
From Mon 1:00 am EDT (05:00 UTC): wind from the north at 7 knots, visibility 4 miles, light rain showers, mist, overcast at 800 feet
From Mon 6:00 am EDT (10:00 UTC): wind from the north-northwest at 10 knots, gusting to 18, visibility more than 6 miles, overcast at 1,200 feet
From Mon 11:00 am EDT (15:00 UTC): wind from the north-northwest at 13 knots, gusting to 22, visibility more than 6 miles, a broken layer at 1,500 feet, overcast at 2,500 feet
From Mon 2:00 pm EDT (18:00 UTC): wind from the north-northwest at 10 knots, gusting to 17, visibility more than 6 miles, a broken layer at 3,500 feet
From Mon 7:00 pm EDT (23:00 UTC): wind from the northwest at 6 knots, visibility more than 6 miles, a few clouds at 5,000 feet, scattered clouds at 25,000 feet

The forecast for ACK, the departure

From Sun 8:00 pm EDT (00:00 UTC): wind from the east at 11 knots, visibility more than 6 miles, light rain, a few clouds at 2,400 feet, scattered clouds at 3,500 feet and more above
From Sun 10:00 pm EDT (02:00 UTC): wind from the east at 14 knots, gusting to 24, visibility 2 miles, rain, mist, overcast at 1,000 feet
From Mon 1:00 am EDT (05:00 UTC): wind from the east at 16 knots, gusting to 23, visibility 3 miles, rain, mist, overcast at 300 feet
From Mon 3:00 am EDT (07:00 UTC): wind from the east-northeast at 15 knots, visibility 1 mile, light rain showers, mist, overcast at 300 feet
From Mon 5:00 am EDT (09:00 UTC): wind from the north-northeast at 15 knots, visibility ¾ mile, mist, overcast at 300 feet
30% chance between Mon 5:00 am EDT (09:00 UTC) and 6:00 am EDT (10:00 UTC): visibility ¾ mile, light rain showers, mist, overcast at 100 feet
From Mon 11:00 am EDT (15:00 UTC): wind from the north-northeast at 15 knots, 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, gusting to 21, visibility more than 6 miles, scattered clouds at 3,000 feet

Temporary flight restrictions on the line or within 25 nm of it

6/8719 Greenwood, DE, Friday, October 16, 2026 through Saturday, October 17, 2026 UTC 24 nm from the route, 293 nm along the route · air shows/sports · starts Friday 16 October · ZDC
6/8886 Greenwood, DE, Sunday, October 18, 2026 UTC 24 nm from the route, 293 nm along the route · air shows/sports · starts Sunday 18 October · ZDC
6/8800 Baltimore, MD, Saturday, October 17, 2026 through Sunday, October 18, 2026 UTC 13 nm from the route, 322 nm along the route · drones kept away from a public gathering · starts Saturday 17 October · ZDC
4/9383 WASHINGTON, DC., USA on the route, at the destination end · security · ZDC
6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local 13 nm from the route, at the destination end · a VIP movement · starts tomorrow · ZDC

Daylight

Sunset at ACK 6:04 pm EDT (22:04 UTC), at DCA 6:34 pm EDT (22:34 UTC) (civil twilight ends 7:01 pm EDT (23:01 UTC)). At 120 knots the arrival at DCA is after sunset there (6:35 pm EDT (22:35 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

Radar now, the Northeast · loop National Weather Service

Radar, the whole country · loop National Weather Service

Surface analysis now Weather Prediction Center

Forecast chart, 12 hours ahead Weather Prediction Center

Forecast chart, 24 hours ahead Weather Prediction Center

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, Ronald Reagan Washington Ntl Airport.