Plan a flight · Mon 10:52 am EDT (14:52 UTC)

Portsmouth International AT Pease to Baltimore/Washington International Thurgood Marshall PSM → BWI

353 nautical miles (406 statute miles) southwest on a straight line, true course 230°, about 246° magnetic at the departure end (variation 16W). At 120 knots that is 2 h 27 min at the quickest height in today's winds (30,000 ft, a 24-knot tailwind), arriving about 1:19 pm EDT (17:19 UTC). Right now PSM is VFR, wind calm; BWI is marginal VFR, wind from the northwest (320°) at 10 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: 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

AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 40,000 ft. Over the first 206 nm of the route.
AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Near the route, 39 nm along 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 PSM.

Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first

A320 at 24,000 ft, 8 nm southeast, 9:42 am EDT (13:42 UTC): moderate turbulence. 69 nm along the route, 8 nm southeast of the line.
as filed, and in English
```
ORH UA /OV ORH/TM 1342/FL240/TP A320/TB MOD 240-270 CONS LGT 280-ABV
```
Report
a routine report filed through ORH
Where
over ORH
Time
13:42 UTC
Height
at 24,000 ft
Aircraft
A320
Turbulence
moderate from 24,000 ft to 27,000 ft continuous light 280-ABV
B738 at 36,000 ft, 1 nm northwest, 8:54 am EDT (12:54 UTC): moderate turbulence. 294 nm along the route, 1 nm northwest of the line.
as filed, and in English
```
PTW UA /OV MXE240005/TM 1254/FL360/TP B738/TB MOD
```
Report
a routine report filed through PTW
Where
5 nm southwest (240°) of MXE
Time
12:54 UTC
Height
at 36,000 ft
Aircraft
B738
Turbulence
moderate
E175 at 400 ft, 41 nm northeast, 9:30 am EDT (13:30 UTC): a broken layer above 40,000 ft. At the departure end, 41 nm northeast of the line.
as filed, and in English
```
PWM UA /OV PWM/TM 1330/FL004/TP E175/SK BKN004
```
Report
a routine report filed through PWM
Where
over PWM
Time
13:30 UTC
Height
at 400 ft
Aircraft
E175
Sky
a broken layer from 400 ft
C700 at 600 ft, 20 nm southeast, 9:40 am EDT (13:40 UTC): overcast above 600 ft. 20 nm along the route, 20 nm southeast of the line.
as filed, and in English
```
BVY UA /OV BVY/TM 1340/FL006/TP C700/SK OVC006-TOPUNKN
```
Report
a routine report filed through BVY
Where
over BVY
Time
13:40 UTC
Height
at 600 ft
Aircraft
C700
Sky
overcast from 600 ft, tops unknown
B738 at 700 ft, 29 nm southeast, 10:20 am EDT (14:20 UTC): a broken layer above 700 ft. 29 nm along the route, 29 nm southeast of the line.
as filed, and in English
```
BOS UA /OV BOS/TM 1420/FL007/TP B738/SK BKN007
```
Report
a routine report filed through BOS
Where
over BOS
Time
14:20 UTC
Height
at 700 ft
Aircraft
B738
Sky
a broken layer from 700 ft
A321 at 600 ft, 29 nm southeast, 9:43 am EDT (13:43 UTC): a broken layer above 600 ft. 29 nm along the route, 29 nm southeast of the line.
as filed, and in English
```
BOS UA /OV BOS/TM 1343/FL006/TP A321/SK BKN006
```
Report
a routine report filed through BOS
Where
over BOS
Time
13:43 UTC
Height
at 600 ft
Aircraft
A321
Sky
a broken layer from 600 ft
B738 at 600 ft, 29 nm southeast, 9:05 am EDT (13:05 UTC): a broken layer above 600 ft. 29 nm along the route, 29 nm southeast of the line.
as filed, and in English
```
BOS UA /OV BOS/TM 1305/FL006/TP B738/SK BKN006
```
Report
a routine report filed through BOS
Where
over BOS
Time
13:05 UTC
Height
at 600 ft
Aircraft
B738
Sky
a broken layer from 600 ft
E75S at 600 ft, 29 nm southeast, 8:53 am EDT (12:53 UTC): a broken layer above 600 ft. 29 nm along the route, 29 nm southeast of the line.
as filed, and in English
```
BOS UA /OV BOS/TM 1253/FL006/TP E75S/SK BKN006
```
Report
a routine report filed through BOS
Where
over BOS
Time
12:53 UTC
Height
at 600 ft
Aircraft
E75S
Sky
a broken layer from 600 ft
A321 at 500 ft, 29 nm southeast, 8:15 am EDT (12:15 UTC): a broken layer above 500 ft. 29 nm along the route, 29 nm southeast of the line.
as filed, and in English
```
BOS UA /OV BOS/TM 1215/FL005/TP A321/SK BKN005
```
Report
a routine report filed through BOS
Where
over BOS
Time
12:15 UTC
Height
at 500 ft
Aircraft
A321
Sky
a broken layer from 500 ft
EC45 at 700 ft, 15 nm southeast, 10:23 am EDT (14:23 UTC): a broken layer above 700 ft, remarks: bases 70,000 ft feet. 39 nm along the route, 15 nm southeast of the line.
as filed, and in English
```
BED UA /OV BED/TM 1423/FL007/TP EC45/SK BKN007/RM BASES 700 FEET
```
Report
a routine report filed through BED
Where
over BED
Time
14:23 UTC
Height
at 700 ft
Aircraft
EC45
Sky
a broken layer from 700 ft
Remarks
bases 70,000 ft feet
CL60 at 700 ft, 15 nm southeast, 9:40 am EDT (13:40 UTC): overcast above 700 ft. 39 nm along the route, 15 nm southeast of the line.
as filed, and in English
```
BED UA /OV BED/TM 1340/FL007/TP CL60/SK OVC007
```
Report
a routine report filed through BED
Where
over BED
Time
13:40 UTC
Height
at 700 ft
Aircraft
CL60
Sky
overcast from 700 ft
CL35 at 600 ft, 15 nm southeast, 8:57 am EDT (12:57 UTC): a broken layer above 600 ft. 39 nm along the route, 15 nm southeast of the line.
as filed, and in English
```
BED UA /OV BED/TM 1257/FL006/TP CL35/SK BKN006
```
Report
a routine report filed through BED
Where
over BED
Time
12:57 UTC
Height
at 600 ft
Aircraft
CL35
Sky
a broken layer from 600 ft
PC12 at 600 ft, 45 nm southeast, 9:00 am EDT (13:00 UTC): overcast above 600 ft, remarks: bases runway 34 departure end. 69 nm along the route, 45 nm southeast of the line.
as filed, and in English
```
PVD UA /OV PVD/TM 1300/FL006/TP PC12/SK OVC006/RM BASES RY34 DEPARTURE END
```
Report
a routine report filed through PVD
Where
over PVD
Time
13:00 UTC
Height
at 600 ft
Aircraft
PC12
Sky
overcast from 600 ft
Remarks
bases runway 34 departure end
A320 at 2,500 ft, 4 nm southwest, 8:08 am EDT (12:08 UTC): a routine report with nothing remarked on. 98 nm along the route, 4 nm southwest of the line.
as filed, and in English
```
BDL UA /OV KBDL075005/TM 1208/FL025/TP A320/SK BASES010 TOPS040/WX 3SM
```
Report
a routine report filed through BDL
Where
5 nm east (075°) of KBDL
Time
12:08 UTC
Height
at 2,500 ft
Aircraft
A320
Sky
BASES010 TOPS040
Weather
3SM

16 more routine reports are on the map.

Winds aloft along the route, and the time en route the forecast for use 14:00–21:00 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 (BOS, BDL, JFK, ACY). 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	350° at 22 kt	−11 kt		131 kt	2 h 42 min	1:34 pm EDT (17:34 UTC)
6,500 ft	350° at 24 kt	−11 kt	10 °C	131 kt	2 h 42 min	1:34 pm EDT (17:34 UTC)
8,500 ft	340° at 26 kt	−11 kt	8 °C	131 kt	2 h 42 min	1:34 pm EDT (17:34 UTC)
10,500 ft	350° at 26 kt	−12 kt	6 °C	132 kt	2 h 40 min	1:32 pm EDT (17:32 UTC)
12,500 ft	350° at 27 kt	−12 kt	2 °C	132 kt	2 h 40 min	1:32 pm EDT (17:32 UTC)
14,500 ft	340° at 27 kt	−11 kt	-2 °C	131 kt	2 h 42 min	1:34 pm EDT (17:34 UTC)
16,500 ft	340° at 28 kt	−11 kt	-5 °C	131 kt	2 h 42 min	1:34 pm EDT (17:34 UTC)
18,000 ft FL180	340° at 29 kt	−10 kt	-8 °C	130 kt	2 h 43 min	1:35 pm EDT (17:35 UTC)
24,000 ft FL240	340° at 37 kt	−15 kt	-21 °C	135 kt	2 h 37 min	1:29 pm EDT (17:29 UTC)
30,000 ft FL300	350° at 52 kt	−24 kt	-36 °C	144 kt	2 h 27 min	1:19 pm EDT (17:19 UTC)
34,000 ft FL340	350° at 52 kt	−24 kt	-45 °C	144 kt	2 h 27 min	1:19 pm EDT (17:19 UTC)
39,000 ft FL390	310° at 41 kt	+4 kt	-53 °C	116 kt	3 h 03 min	1:55 pm EDT (17:55 UTC)

Based on data from the 12th at 12:00 UTC; valid on the 12th at 18:00 UTC for use 14:00 to 21:00 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
BOS	used from 0 nm out; 29 nm from the line	340/17	340/23 11°	350/26 8°	350/28 2°	330/27 -9°	330/38 -22°	340/47 -38°	340/49 -46°	290/36 -54°
BDL	used from 49 nm out; 34 nm from the line	330/20	340/23 12°	340/25 8°	340/27 3°	330/30 -9°	330/39 -21°	340/48 -37°	340/53 -46°	320/33 -55°
JFK	used from 147 nm out; 35 nm from the line	360/20	340/23 11°	340/26 8°	350/26 3°	350/30 -8°	350/36 -21°	350/52 -36°	350/54 -44°	320/45 -53°
ACY	used from 245 nm out; 53 nm from the line	010/26	360/24 11°	350/28 8°	350/26 4°	340/29 -8°	350/39 -21°	350/57 -35°	350/52 -43°	310/50 -50°

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
PSM Portsmouth, NH	departure	VFR Sky: a few clouds at 600 feet, scattered clouds at 20,000 feet	calm	10+ mi	none	100 ft	9:55 am EDT (13:55 UTC)
ASH Nashua, NH	39 nm out, 7 nm north of the line, tower	VFR Sky: a few clouds at 1,000 feet	calm	10+ mi	none	200 ft	13:56 UTC
ORH Worcester, MA	69 nm out, 8 nm southeast of the line, tower	VFR Sky: scattered clouds at 800 feet	variable at 5 knots	10+ mi	none	1,009 ft	13:54 UTC
BDL Windsor Locks, CT	108 nm out, 1 nm north of the line, tower	VFR Sky: a few clouds at 1,000 feet, a few clouds at 2,500 feet	from the north (010°) at 3 knots	10+ mi	none	173 ft	13:51 UTC
DXR Danbury, CT	157 nm out, 1 nm southeast of the line, tower	marginal VFR Sky: a broken layer at 1,800 feet, overcast at 4,200 feet	from the north (350°) at 7 knots, gusting to 16	10+ mi	1,800 ft	456 ft	14:25 UTC
CDW Caldwell, NJ	206 nm out, 3 nm northeast of the line, tower	VFR Sky: a broken layer at 3,600 feet, overcast at 4,300 feet	variable at 3 knots	10+ mi	3,600 ft	172 ft	14:00 UTC
TTN Trenton, NJ	245 nm out, 10 nm southeast of the line, tower	VFR Sky: a few clouds at 1,300 feet, scattered clouds at 3,900 feet	from the north (360°) at 12 knots, gusting to 20	10+ mi	none	212 ft	13:53 UTC
ILG Wilmington, DE	294 nm out, 12 nm southeast of the line, tower	marginal VFR Sky: a broken layer at 1,800 feet, overcast at 2,200 feet	from the north (350°) at 12 knots	10+ mi	1,800 ft	79 ft	13:51 UTC
MTN Baltimore, MD	333 nm out, 5 nm southwest of the line, tower	marginal VFR Sky: overcast at 2,300 feet	from the north (350°) at 9 knots	10+ mi	2,300 ft	22 ft	14:45 UTC
BWI Baltimore, MD	destination	marginal VFR Sky: a broken layer at 2,000 feet, a broken layer at 6,000 feet, a broken layer at 25,000 feet	from the northwest (320°) at 10 knots	10+ mi	2,000 ft	143 ft	9:54 am EDT (13:54 UTC)

The highest airport on this list sits at 1,009 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At BWI when you get there the forecast at the estimated arrival, 1:19 pm EDT (17:19 UTC)

Wind from the northwest at 10 knots, gusting to 18, visibility more than 6 miles, a broken layer at 2,000 feet, overcast at 3,500 feet marginal VFR

The whole forecast for BWI

From Mon 11:00 am EDT (15:00 UTC): wind from the northwest at 10 knots, visibility more than 6 miles, a broken layer at 2,000 feet
From Mon 1:00 pm EDT (17:00 UTC): wind from the northwest at 10 knots, gusting to 18, visibility more than 6 miles, a broken layer at 2,000 feet, overcast at 3,500 feet
From Mon 4:00 pm EDT (20:00 UTC): wind from the west-northwest at 9 knots, visibility more than 6 miles, scattered clouds at 2,500 feet, a broken layer at 3,500 feet
From Mon 8:00 pm EDT (00:00 UTC): wind from the west at 5 knots, visibility more than 6 miles, a few clouds at 5,000 feet
From Tue 10:00 am EDT (14:00 UTC): wind from the south-southwest at 6 knots, visibility more than 6 miles, scattered clouds at 25,000 feet

The forecast for PSM, the departure

From Mon 8:00 am EDT (12:00 UTC): wind calm, visibility 4 miles, mist, overcast at 1,300 feet
From Mon 9:00 am EDT (13:00 UTC): wind light and variable, visibility 3 miles, mist, a broken layer at 2,000 feet
From Mon 11:00 am EDT (15:00 UTC): wind from the west at 7 knots, visibility more than 6 miles, a few clouds at 25,000 feet
From Mon 11:00 pm EDT (03:00 UTC): wind from the north-northeast at 9 knots, visibility more than 6 miles, a broken layer at 1,500 feet

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

5/2811 NEW YORK, NY, Monday, October 20, 2025 through Tuesday, October 20, 2026 Local 13 nm from the route, 196 nm along the route · security · until 20 October · ZNY
4/9383 WASHINGTON, DC., USA 12 nm from the route, at the destination end · security · ZDC

Daylight

Sunset at PSM 6:05 pm EDT (22:05 UTC), at BWI 6:32 pm EDT (22:32 UTC) (civil twilight ends 6:59 pm EDT (22:59 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: Portsmouth International AT Pease, Baltimore/Washington International Thurgood Marshall.