Plan a flight · Sun 11:11 pm MDT (05:11 UTC)

Rapid City Regional to General Edward Lawrence Logan International RAP → BOS

1,397 nautical miles (1,608 statute miles) east on a straight line, true course 083°, about 075° magnetic at the departure end (variation 8E). At 120 knots that is 7 h 56 min at the quickest height in today's winds (39,000 ft, a 56-knot tailwind), arriving about 9:07 am EDT (13:07 UTC). Right now RAP is IFR, wind from the north-northeast (030°) at 7 knots; BOS is IFR, wind from the north-northeast (030°) at 11 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

SIGMET 8C: thunderstorms (a convective SIGMET) up to 32,000 ft, moving from the southwest at 40 knots, until 12:55 am MDT (06:55 UTC). Near the route, at the departure end.

as issued

WSUS32 KKCI 120455
MKCC WST 120455
CONVECTIVE SIGMET 8C
VALID UNTIL 0655Z
NE SD WY
FROM 50WNW RAP-20SSW RAP-60NW BFF-40ENE DDY-50WNW RAP
DMSHG AREA TS MOV FROM 22040KT. TOPS TO FL320.

AIRMET SIERRA 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the first 309 nm of the route.
AIRMET TANGO 1W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Near the route, at the departure end.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Near the route, at the departure end.
AIRMET TANGO 3W: 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 route from 469 to 619 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 609 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 279 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1168 to 1318 nm out.
AIRMET ZULU 1C: moderate icing up to 22,000 ft. Over the route from 1188 to 1378 nm out.
AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 10,000 ft. Over the last 90 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 RAP.

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

UAL330 at 35,000 ft, 26 nm north, 10:30 pm MDT (04:30 UTC): moderate turbulence, wind 235° at 92 knots. At the destination end, 26 nm north 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
UAL932 at 35,000 ft, 50 nm east, 10:34 pm MDT (04:34 UTC): moderate turbulence, wind 240° at 69 knots. At the destination end, 50 nm east 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, 47 nm east, 10:33 pm MDT (04:33 UTC): moderate turbulence. At the destination end, 47 nm east 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
A321 at 16,500 ft, 2 nm north, 9:25 pm MDT (03:25 UTC): light turbulence, remarks: during the climb. 389 nm along the route, 2 nm north of the line.
as filed, and in English
```
MSP UA /OV MSP235040/TM 0325/FL165/TP A321/TB CONS LGT /RM DURC
```
Report
a routine report filed through MSP
Where
40 nm southwest (235°) of MSP
Time
03:25 UTC
Height
at 16,500 ft
Aircraft
A321
Turbulence
continuous light
Remarks
during the climb
CRJ7 descending, 28 nm north, 10:09 pm MDT (04:09 UTC): a routine report with nothing remarked on. At the destination end, 28 nm north of the line.
as filed, and in English
```
MHT UA /OV RWY 6/TM 0409/FLDURD/TP CRJ7/SK 006
```
Report
a routine report filed through MHT
Where
runway 6
Time
04:09 UTC
Height
during the descent
Aircraft
CRJ7
Sky
at 600 ft
CRJ9 descending, 28 nm north, 9:16 pm MDT (03:16 UTC): a routine report with nothing remarked on. At the destination end, 28 nm north of the line.
as filed, and in English
```
MHT UA /OV RWY 6/TM 0316/FLDURD/TP CRJ9/SK 004
```
Report
a routine report filed through MHT
Where
runway 6
Time
03:16 UTC
Height
during the descent
Aircraft
CRJ9
Sky
at 400 ft
B38M descending, 28 nm north, 8:53 pm MDT (02:53 UTC): overcast above 1,500 ft; scattered clouds above 500 ft. At the destination end, 28 nm north of the line.
as filed, and in English
```
MHT UA /OV RWY 17/TM 0253/FLDURD/TP B38M/SK 015 OVC / 005 SCT
```
Report
a routine report filed through MHT
Where
runway 17
Time
02:53 UTC
Height
during the descent
Aircraft
B38M
Sky
at 1,500 ft overcast; at 500 ft scattered
B38M descending, 28 nm north, 8:14 pm MDT (02:14 UTC): remarks: mod-hvy precip. At the destination end, 28 nm north of the line.
as filed, and in English
```
MHT UA /OV RWY 17/TM 0214/FLDURD/TP B38M/SK 015/RM MOD-HVY PRECIP
```
Report
a routine report filed through MHT
Where
runway 17
Time
02:14 UTC
Height
during the descent
Aircraft
B38M
Sky
at 1,500 ft
Remarks
mod-hvy precip
B738 at 300 ft, 0 nm south, 9:00 pm MDT (03:00 UTC): a broken layer above 500 ft, remarks: during the descent runway 4R bos. At the destination end, 0 nm south of the line.
as filed, and in English
```
BOS UA /OV KBOS/TM 0300/FL003/TP B738/SK BKN005/RM DURD RY 4R BOS
```
Report
a routine report filed through BOS
Where
over KBOS
Time
03:00 UTC
Height
at 300 ft
Aircraft
B738
Sky
a broken layer from 500 ft
Remarks
during the descent runway 4R bos

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 13 forecast points nearest it (RAP, PIR, ABR, FSD, MSP, LSE, GRB, TVC, BUF, SYR, ALB, BDL, BOS). 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 14 kt	−13 kt		133 kt	10 h 30 min	11:41 am EDT (15:41 UTC)
5,500 ft	250° at 12 kt	−12 kt	17 °C	132 kt	10 h 35 min	11:46 am EDT (15:46 UTC)
7,500 ft	260° at 12 kt	−12 kt	12 °C	132 kt	10 h 35 min	11:46 am EDT (15:46 UTC)
9,500 ft	250° at 12 kt	−12 kt	8 °C	132 kt	10 h 35 min	11:46 am EDT (15:46 UTC)
11,500 ft	250° at 15 kt	−15 kt	5 °C	135 kt	10 h 21 min	11:32 am EDT (15:32 UTC)
13,500 ft	260° at 18 kt	−18 kt	0 °C	138 kt	10 h 07 min	11:18 am EDT (15:18 UTC)
15,500 ft	260° at 20 kt	−20 kt	-4 °C	140 kt	9 h 59 min	11:10 am EDT (15:10 UTC)
17,500 ft	270° at 23 kt	−23 kt	-9 °C	143 kt	9 h 46 min	10:57 am EDT (14:57 UTC)
18,000 ft FL180	270° at 24 kt	−24 kt	-10 °C	144 kt	9 h 42 min	10:53 am EDT (14:53 UTC)
24,000 ft FL240	260° at 30 kt	−29 kt	-21 °C	149 kt	9 h 23 min	10:34 am EDT (14:34 UTC)
30,000 ft FL300	270° at 37 kt	−36 kt	-36 °C	156 kt	8 h 57 min	10:08 am EDT (14:08 UTC)
34,000 ft FL340	270° at 44 kt	−43 kt	-43 °C	163 kt	8 h 34 min	9:45 am EDT (13:45 UTC)
39,000 ft FL390	270° at 57 kt	−56 kt	-51 °C	176 kt	7 h 56 min	9:07 am EDT (13:07 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
RAP	used from 0 nm out; 25 nm from the line		180/23 12°	200/38 13°	210/38 6°	220/28 -10°	230/34 -21°	230/37 -36°	250/52 -38°	250/59 -46°
PIR	used from 50 nm out; 46 nm from the line		170/22 19°	190/25 13°	210/32 6°	240/23 -9°	250/32 -21°	250/38 -36°	260/44 -40°	260/52 -47°
ABR	used from 200 nm out; 68 nm from the line	070/14	250/10 17°	270/16 11°	260/28 5°	260/36 -10°	260/41 -22°	270/33 -37°	260/42 -42°	260/50 -48°
FSD	used from 250 nm out; 51 nm from the line	190/9	230/30 18°	240/23 13°	240/20 6°	260/22 -9°	250/31 -21°	250/43 -36°	260/49 -43°	270/53 -47°
MSP	used from 349 nm out; 54 nm from the line	230/26	240/30 17°	240/24 12°	250/22 5°	250/35 -10°	260/36 -21°	250/41 -36°	250/49 -45°	260/58 -52°
LSE	used from 449 nm out; 50 nm from the line	230/40	240/24 17°	240/13 10°	250/13 6°	280/22 -9°	250/28 -21°	250/41 -34°	260/42 -44°	270/62 -53°
GRB	used from 549 nm out; 68 nm from the line	250/36	270/23 16°	270/14 9°	240/18 4°	280/26 -9°	280/29 -20°	290/42 -36°	290/51 -45°	290/72 -55°
TVC	used from 699 nm out; 38 nm from the line	260/31	280/22 15°	290/18 10°	270/13 2°	290/25 -10°	300/35 -21°	310/52 -37°	320/59 -47°	300/84 -54°
BUF	used from 898 nm out; 140 nm from the line	320/10	010/16 10°	360/10 6°	340/13 2°	330/22 -11°	300/25 -23°	320/31 -38°	300/29 -44°	280/36 -50°
SYR	used from 1098 nm out; 46 nm from the line	280/13	350/18 10°	340/10 6°	300/15 1°	280/17 -12°	270/16 -23°	280/25 -38°	250/40 -42°	240/53 -50°
ALB	used from 1198 nm out; 50 nm from the line	120/9	270/8 10°	L/V 5°	260/9 1°	260/34 -10°	250/42 -22°	240/57 -35°	240/70 -42°	240/65 -50°
BDL	used from 1298 nm out; 44 nm from the line	120/24	290/23 12°	280/21 8°	250/36 3°	250/41 -11°	230/48 -21°	230/78 -32°	230/96 -41°	230/86 -52°
BOS	used from 1348 nm out; 25 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°

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
RAP Rapid City, SD	departure	IFR Sky: scattered clouds at 400 feet, overcast at 700 feet Weather: light rain, mist	from the north-northeast (030°) at 7 knots	6 mi	700 ft	3,203 ft	10:52 pm MDT (04:52 UTC)
PIR Pierre, SD	120 nm out, 7 nm north of the line	IFR Sky: overcast at 900 feet	from the northeast (050°) at 10 knots	10+ mi	900 ft	1,744 ft	04:53 UTC
HON Huron, SD	210 nm out, 1 nm northwest of the line	IFR Sky: overcast at 700 feet	from the north-northwest (340°) at 9 knots	10+ mi	700 ft	1,288 ft	04:55 UTC
FCM Minneapolis, MN	409 nm out, 20 nm north of the line, tower	VFR	from the south-southwest (210°) at 9 knots	10+ mi	none	906 ft	04:53 UTC
EAU Eau Claire, WI	499 nm out, 23 nm north of the line, tower	VFR	from the south (180°) at 6 knots	10+ mi	none	913 ft	04:56 UTC
GRB Green Bay, WI	639 nm out, 6 nm northeast of the line, tower	VFR	from the south (190°) at 4 knots	10+ mi	none	695 ft	04:53 UTC
CAD Cadillac, MI	759 nm out, 1 nm north of the line	VFR	from the southwest (220°) at 7 knots	10+ mi	none	1,306 ft	04:55 UTC
BAX Bad Axe, MI	868 nm out, 17 nm south of the line	IFR Sky: a broken layer at 900 feet	from the southwest (220°) at 5 knots	10+ mi	900 ft	763 ft	04:55 UTC
ROC Rochester, NY	1098 nm out, 21 nm south of the line, tower	VFR Sky: a few clouds at 1,000 feet, overcast at 6,500 feet	from the southwest (230°) at 3 knots	10+ mi	6,500 ft	558 ft	04:54 UTC
RME Rome, NY	1198 nm out, 5 nm north of the line, tower	VFR Sky: overcast at 3,700 feet	calm	10+ mi	3,700 ft	504 ft	04:53 UTC
SCH Schenectady, NY	1268 nm out, 4 nm southwest of the line, tower	marginal VFR Sky: a broken layer at 1,100 feet, overcast at 2,000 feet Weather: rain	from the northeast (040°) at 4 knots	7 mi	1,100 ft	377 ft	00:51 UTC
BOS Boston, MA	destination	IFR Sky: a broken layer at 500 feet, a broken layer at 2,700 feet, overcast at 4,000 feet Weather: light rain, mist	from the north-northeast (030°) at 11 knots	4 mi	500 ft	19 ft	12:57 am EDT (04:57 UTC)

The highest airport on this list sits at 3,203 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At BOS when you get there the forecast at the estimated arrival, 9:07 am EDT (13:07 UTC)

Wind from the north at 7 knots, visibility 3 miles, mist, a broken layer at 800 feet IFR

The whole forecast for BOS

From Sun 8:00 pm EDT (00:00 UTC): wind from the southeast at 4 knots, visibility 4 miles, heavy rain, mist, scattered clouds at 2,200 feet, a broken layer at 2,800 feet and more above
From Sun 10:00 pm EDT (02:00 UTC): wind from the east-southeast at 5 knots, visibility 3 miles, light rain, mist, overcast at 1,000 feet
From Sun 11:00 pm EDT (03:00 UTC): wind from the east at 6 knots, visibility 2 miles, light rain, mist, overcast at 800 feet
From Mon 2:00 am EDT (06:00 UTC): wind from the northeast at 8 knots, visibility 2 miles, light rain showers, mist, overcast at 300 feet
From Mon 9:00 am EDT (13:00 UTC): wind from the north at 7 knots, visibility 3 miles, mist, a broken layer at 800 feet
From Mon 1:00 pm EDT (17:00 UTC): wind from the north-northwest at 5 knots, visibility more than 6 miles, scattered clouds at 15,000 feet
From Mon 11:00 pm EDT (03:00 UTC): wind from the north-northeast at 5 knots, visibility more than 6 miles, scattered clouds at 4,500 feet

The forecast for RAP, the departure

From Sun 9:00 pm MDT (03:00 UTC): wind from the east-southeast at 8 knots, visibility 2 miles, mist, a broken layer at 400 feet
30% chance between Sun 10:00 pm MDT (04:00 UTC) and 2:00 am MDT (08:00 UTC): visibility 3 miles, light rain showers, mist, scattered clouds at 800 feet, a broken layer at 1,500 feet
From Mon 10:00 am MDT (16:00 UTC): wind from the north-northwest at 20 knots, gusting to 30, visibility more than 6 miles, a few clouds at 1,500 feet, scattered clouds at 3,500 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 18 nm from the route, at the destination end · drones kept away from a public gathering · starts Saturday 17 October · ZBW

Daylight

Sunset at RAP 6:13 pm MDT (00:13 UTC), at BOS 6:07 pm EDT (22:07 UTC) (civil twilight ends 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 northern Rockies · loop National Weather Service

Radar now, the upper Mississippi valley · loop National Weather Service

Radar now, the central Great Lakes · 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: Rapid City Regional, General Edward Lawrence Logan International.