Plan a flight · Mon 5:44 am EDT (09:44 UTC)

General Edward Lawrence Logan International to Valley International BOS → HRL

1,627 nautical miles (1,873 statute miles) southwest on a straight line, true course 242°, about 257° magnetic at the departure end (variation 15W). At 120 knots that is 13 h 20 min at the quickest height in today's winds (10,500 ft, a 2-knot tailwind), arriving about 6:04 pm CDT (23:04 UTC). Right now BOS is IFR, wind from the north (350°) at 11 knots; HRL is VFR, wind from the east (090°) at 4 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, fog). Over the first 879 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 33,000 ft. Over the first 309 nm of the route.
AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 6,000 ft. Over the route from 299 to 599 nm out.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 349 to 769 nm out.
AIRMET TANGO 5W: moderate turbulence above 18,000 ft (due to mountain wave) from 29,000 ft to 40,000 ft. Near the route, 599 nm along the route.
AIRMET SIERRA 1E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, mist, fog). Over the route from 1188 to 1288 nm out.

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 BOS.

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

A321 at 9,500 ft, 9 nm northwest, 5:05 am EDT (09:05 UTC): moderate turbulence, remarks: moderate turbulence during the descent jfund arrival from from 9,500 ft to 7,000 ft, smooth below. At the departure end, 9 nm northwest of the line.
as filed, and in English
```
BOS UA /OV BOS350010/TM 0905/FL095/TP A321/TB MOD/RM MOD TB DURD JFUND ARR FROM 095-070, SMOOTH BELOW
```
Report
a routine report filed through BOS
Where
10 nm north (350°) of BOS
Time
09:05 UTC
Height
at 9,500 ft
Aircraft
A321
Turbulence
moderate
Remarks
moderate turbulence during the descent jfund arrival from from 9,500 ft to 7,000 ft, smooth below
B737 at 700 ft, 38 nm southeast, 5:33 am EDT (09:33 UTC): remarks: light rain. 319 nm along the route, 38 nm southeast of the line.
as filed, and in English
```
BWI UA /OV BWI/TM 0933/FL007/TP B737/RM LIGHT RAIN
```
Report
a routine report filed through BWI
Where
over BWI
Time
09:33 UTC
Height
at 700 ft
Aircraft
B737
Remarks
light rain
B737 at 800 ft, 38 nm southeast, 3:30 am EDT (07:30 UTC): remarks: bases 800 ft. 319 nm along the route, 38 nm southeast of the line.
as filed, and in English
```
BWI UA /OV BWI/TM 0730/FL008/TP B737/RM BASES 008
```
Report
a routine report filed through BWI
Where
over BWI
Time
07:30 UTC
Height
at 800 ft
Aircraft
B737
Remarks
bases 800 ft
B738 at 33,000 ft, 14 nm northwest, 4:44 am EDT (08:44 UTC): -39 °C, wind 350° at 65 knots, remarks: produced by skypath. 479 nm along the route, 14 nm northwest of the line.
as filed, and in English
```
EKN UA /OV EKN188027 /TM 0844 /FL330 /TP B738 /TA M39 /WV 35065KT /TB MOD-CONS /RM PRODUCED BY SKYPATH
```
Report
a routine report filed through EKN
Where
27 nm south (188°) of EKN
Time
08:44 UTC
Height
at 33,000 ft
Aircraft
B738
Temperature
−39 °C
Wind
from 350° at 65 knots
Turbulence
mod-cons
Remarks
produced by skypath

Winds aloft along the route, and the time en route the forecast for use 08:00–15:00 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 18 forecast points nearest it (BOS, BDL, JFK, AVP, PSB, EKN, ROA, CRW, TRI, TYS, HSV, BHM, JAN, LCH, HOU, PSX, CRP, BRO). 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	320° at 6 kt	+1 kt	11 °C	119 kt	13 h 40 min	6:24 pm CDT (23:24 UTC)
6,500 ft	330° at 8 kt	0	14 °C	120 kt	13 h 34 min	6:18 pm CDT (23:18 UTC)
8,500 ft	330° at 11 kt	−1 kt	11 °C	121 kt	13 h 27 min	6:11 pm CDT (23:11 UTC)
10,500 ft	330° at 13 kt	−2 kt	8 °C	122 kt	13 h 20 min	6:04 pm CDT (23:04 UTC)
12,500 ft	330° at 14 kt	−1 kt	4 °C	121 kt	13 h 27 min	6:11 pm CDT (23:11 UTC)
14,500 ft	330° at 16 kt	0	0 °C	120 kt	13 h 34 min	6:18 pm CDT (23:18 UTC)
16,500 ft	320° at 18 kt	+1 kt	-4 °C	119 kt	13 h 40 min	6:24 pm CDT (23:24 UTC)
18,000 ft FL180	320° at 20 kt	+2 kt	-7 °C	118 kt	13 h 47 min	6:31 pm CDT (23:31 UTC)
24,000 ft FL240	320° at 20 kt	+3 kt	-18 °C	117 kt	13 h 54 min	6:38 pm CDT (23:38 UTC)
30,000 ft FL300	320° at 31 kt	0	-33 °C	120 kt	13 h 34 min	6:18 pm CDT (23:18 UTC)
34,000 ft FL340	320° at 34 kt	+2 kt	-41 °C	118 kt	13 h 47 min	6:31 pm CDT (23:31 UTC)
39,000 ft FL390	320° at 31 kt	+1 kt	-51 °C	119 kt	13 h 40 min	6:24 pm CDT (23:24 UTC)

Based on data from the 12th at 06:00 UTC; valid on the 12th at 12:00 UTC for use 08:00 to 15:00 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; 25 nm from the line	020/10	360/20 10°	340/19 7°	290/21 2°	270/35 -9°	260/42 -22°	250/55 -38°	240/75 -43°	250/72 -51°
BDL	used from 50 nm out; 14 nm from the line	020/15	010/19 10°	340/10 7°	300/17 3°	280/23 -10°	250/35 -22°	250/44 -38°	250/55 -42°	250/57 -51°
JFK	used from 100 nm out; 46 nm from the line	020/25	290/9 12°	300/12 7°	320/14 3°	290/17 -10°	240/27 -21°	240/44 -36°	240/53 -41°	240/51 -50°
AVP	used from 200 nm out; 52 nm from the line	010/20	020/24 11°	360/19 8°	350/23 2°	320/24 -11°	330/25 -22°	330/27 -37°	310/28 -42°	290/30 -50°
PSB	used from 299 nm out; 84 nm from the line		020/21 12°	360/28 7°	360/29 1°	350/33 -10°	350/42 -22°	350/49 -37°	340/63 -43°	350/39 -52°
EKN	used from 349 nm out; 83 nm from the line		330/20 10°	350/29 7°	340/32 2°	340/44 -8°	350/50 -21°	350/63 -35°	340/69 -40°	330/42 -50°
ROA	used from 499 nm out; 49 nm from the line	310/32	340/32 14°	350/25 9°	340/24 3°	340/42 -8°	340/52 -20°	350/62 -34°	350/64 -39°	310/44 -48°
CRW	used from 549 nm out; 61 nm from the line	320/17	340/23 12°	340/32 8°	340/35 4°	330/40 -7°	340/45 -20°	340/57 -34°	340/64 -42°	320/38 -50°
TRI	used from 599 nm out; 25 nm from the line		340/25 11°	350/37 9°	350/34 6°	340/39 -7°	340/43 -19°	340/55 -32°	330/58 -42°	320/37 -50°
TYS	used from 699 nm out; 11 nm from the line	330/16	350/32 14°	350/37 9°	340/30 5°	330/28 -6°	340/36 -19°	330/40 -33°	330/51 -41°	330/36 -51°
HSV	used from 799 nm out; 51 nm from the line	300/20	310/14 16°	310/18 10°	310/15 4°	320/19 -5°	290/16 -18°	320/36 -32°	320/47 -41°	330/42 -50°
BHM	used from 898 nm out; 38 nm from the line	310/19	310/15 16°	320/19 11°	330/15 5°	330/23 -5°	320/14 -18°	320/36 -32°	330/44 -40°	340/36 -51°
JAN	used from 998 nm out; 66 nm from the line	240/10	260/15 18°	280/10 11°	290/6 6°	290/15 -5°	300/15 -17°	320/35 -30°	330/38 -40°	330/39 -51°
LCH	used from 1198 nm out; 75 nm from the line	170/21	160/23 18°	170/13 13°	170/6 8°	300/12 -7°	280/16 -14°	320/27 -30°	330/23 -41°	340/38 -51°
HOU	used from 1348 nm out; 69 nm from the line	180/22	180/20 16°	170/7 15°	L/V 8°	220/11 -6°	260/15 -13°	310/20 -30°	320/20 -40°	350/32 -51°
PSX	used from 1448 nm out; 59 nm from the line	160/24	190/17 17°	200/10 15°	L/V 8°	260/7 -5°	220/10 -12°	310/11 -30°	320/13 -40°	010/29 -51°
CRP	used from 1497 nm out; 71 nm from the line	140/21	160/22 17°	180/14 13°	210/6 9°	270/10 -5°	200/8 -13°	L/V -29°	L/V -40°	030/28 -51°
BRO	used from 1547 nm out; 63 nm from the line	160/15	160/15 18°	170/11 14°	150/7 9°	L/V -4°	170/6 -15°	100/15 -29°	100/14 -41°	040/26 -51°

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
BOS Boston, MA	departure	IFR Sky: a broken layer at 600 feet, overcast at 1,000 feet Weather: light rain, mist	from the north (350°) at 11 knots	3 mi	600 ft	19 ft	5:02 am EDT (09:02 UTC)
OXC Oxford, CT	110 nm out, 1 nm east of the line, tower	low IFR Sky: overcast at 400 feet	from the north-northeast (030°) at 12 knots, gusting to 17	10+ mi	400 ft	730 ft	08:56 UTC
LNS Lancaster, PA	270 nm out, 5 nm west of the line, tower	marginal VFR Sky: a broken layer at 1,000 feet, overcast at 1,600 feet	from the north-northwest (340°) at 5 knots	10+ mi	1,000 ft	402 ft	09:06 UTC
MRB Martinsburg, WV	359 nm out, 7 nm northwest of the line, tower	marginal VFR Sky: overcast at 1,500 feet	from the north-northwest (330°) at 6 knots	10+ mi	1,500 ft	564 ft	08:53 UTC
LWB Lewisburg, WV	509 nm out, 9 nm southeast of the line, tower	marginal VFR Sky: overcast at 1,900 feet	from the west (280°) at 6 knots	10+ mi	1,900 ft	2,301 ft	05:55 UTC
TYS Knoxville, TN	719 nm out, 10 nm southeast of the line, tower	VFR Sky: a few clouds at 3,300 feet	from the south-southwest (210°) at 6 knots	10+ mi	none	986 ft	08:53 UTC
HSV Huntsville, AL	869 nm out, 16 nm northwest of the line, tower	VFR	from the east (090°) at 3 knots	10+ mi	none	628 ft	08:53 UTC
JAN Jackson, MS	1088 nm out, 10 nm northwest of the line, tower	VFR	from the south-southeast (150°) at 3 knots	10+ mi	none	346 ft	08:54 UTC
LCH Lake Charles, LA	1298 nm out, 15 nm northwest of the line, tower	VFR	from the southeast (130°) at 3 knots	10+ mi	none	14 ft	08:53 UTC
HRL Harlingen, TX	destination	VFR	from the east (090°) at 4 knots	10+ mi	none	36 ft	3:52 am CDT (08:52 UTC)

The highest airport on this list sits at 2,301 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At HRL when you get there the forecast at the estimated arrival, 6:04 pm CDT (23:04 UTC)

Wind from the south-southeast at 12 knots, gusting to 20, visibility more than 6 miles, scattered clouds at 7,000 feet VFR

The whole forecast for HRL

From Mon 1:00 am CDT (06:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 2,500 feet
From Mon 9:00 am CDT (14:00 UTC): wind from the south-southeast at 7 knots, visibility more than 6 miles, a few clouds at 25,000 feet
From Mon 1:00 pm CDT (18:00 UTC): wind from the south-southeast at 12 knots, gusting to 20, visibility more than 6 miles, scattered clouds at 7,000 feet
From Mon 9:00 pm CDT (02:00 UTC): wind from the southeast at 9 knots, visibility more than 6 miles, a few clouds at 7,000 feet

The forecast for BOS, the departure

From Mon 4:00 am EDT (08:00 UTC): wind from the north-northeast at 12 knots, visibility 6 miles, mist, overcast at 800 feet
From Mon 11:00 am EDT (15:00 UTC): wind from the north at 8 knots, visibility more than 6 miles, scattered clouds at 15,000 feet
From Mon 3:00 pm EDT (19:00 UTC): wind from the northwest at 7 knots, visibility more than 6 miles, scattered clouds at 15,000 feet
From Mon 11:00 pm EDT (03:00 UTC): wind from the northeast at 10 knots, visibility more than 6 miles, scattered clouds at 4,500 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 8 nm from the route, at the departure end · drones kept away from a public gathering · starts Saturday 17 October · ZBW
6/7153 North Sicuate, RI, Saturday, October 10, 2026 through Monday, October 12, 2026 UTC 12 nm from the route, at the departure end · drones kept away from a public gathering · until 12 October · ZBW
5/2811 NEW YORK, NY, Monday, October 20, 2025 through Tuesday, October 20, 2026 Local 19 nm from the route, 160 nm along the route · security · until 20 October · ZNY
4/9383 WASHINGTON, DC., USA 15 nm from the route, 339 nm along the route · security · ZDC
6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local 23 nm from the route, 349 nm along the route · a VIP movement · today · ZDC
5/6914 South Padre Island, TX, Tuesday, May 6, 2025 Local 24 nm from the route, at the destination end · security · ended 6 May · ZHU

Daylight

Sunset at BOS 6:07 pm EDT (22:07 UTC), at HRL 7:04 pm CDT (00:04 UTC) (civil twilight ends 7:28 pm CDT (00:28 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 now, the lower Mississippi valley · loop National Weather Service

Radar now, the southern Plains · 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: General Edward Lawrence Logan International, Valley International.