Plan a flight · Mon 7:02 am EDT (11:02 UTC)

Westchester County to Joslin Fld/Magic Valley Regional HPN → TWF

1,810 nautical miles (2,083 statute miles) west on a straight line, true course 286°, about 299° magnetic at the departure end (variation 13W). At 120 knots that is 16 h 55 min at the quickest height in today's winds (6,500 ft, a 13-knot headwind), arriving about 9:57 pm MDT (03:57 UTC), after sunset at the destination. Right now HPN is IFR, wind from the north (350°) at 8 knots; TWF is marginal VFR, wind from the southwest (220°) at 8 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 SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the first 497 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 33,000 ft. Over the first 90 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 60 to 249 nm out.
AIRMET TANGO 2W: 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, 836 nm along the route.
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 last 776 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). Over the route from 1363 to 1432 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Near the route, 1442 nm along the route.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the last 308 nm of the route.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 219 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 HPN.

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

urgent SF50 descending, 25 nm south, 6:50 am EDT (10:50 UTC): light turbulence, overcast above 1,200 ft, remarks: during the descent runway 5. At the departure end, 25 nm south of the line.
as filed, and in English
```
MMU UUA /OV MMU/TM 1050/FLDURD/TP SF50/SK OVC012/TB LGT/RM DURD RWY 5
```
Report
an urgent report filed through MMU
Where
over MMU
Time
10:50 UTC
Height
during the descent
Aircraft
SF50
Sky
overcast from 1,200 ft
Turbulence
light
Remarks
during the descent runway 5
A320 climbing, 30 nm south, 6:42 am EDT (10:42 UTC): a routine report with nothing remarked on. At the departure end, 30 nm south of the line.
as filed, and in English
```
JFK UA /OV JFK150005/TM 1042/FLDURC/TP A320/SK 010-TOP024
```
Report
a routine report filed through JFK
Where
5 nm southeast (150°) of JFK
Time
10:42 UTC
Height
during the climb
Aircraft
A320
Sky
010-TOP024
B737 climbing, 32 nm southeast, 6:05 am EDT (10:05 UTC): a routine report with nothing remarked on. At the departure end, 32 nm southeast of the line.
as filed, and in English
```
ISP UA /OV ISP/TM 1005/FLDURC/TP B737/SK BASES 009
```
Report
a routine report filed through ISP
Where
over ISP
Time
10:05 UTC
Height
during the climb
Aircraft
B737
Sky
bases 900 ft
A21N at 35,000 ft, 41 nm north, 4:52 am EDT (08:52 UTC): light to moderate chop turbulence, remarks: zob. 199 nm along the route, 41 nm north of the line.
as filed, and in English
```
ROC UA /OV GEE190015/TM 0852/FL350/TP A21N/TB LGHT-MOD CHOP/RM ZOB
```
Report
a routine report filed through ROC
Where
15 nm south (190°) of GEE
Time
08:52 UTC
Height
at 35,000 ft
Aircraft
A21N
Turbulence
lght-mod chop
Remarks
zob
C208 at 2,700 ft, 14 nm south, 6:01 am EDT (10:01 UTC): remarks: zob. 229 nm along the route, 14 nm south of the line.
as filed, and in English
```
BFD UA /OV BFD/TM 1001/FL027/TP C208/SK BASE027 TOP043/RM ZOB
```
Report
a routine report filed through BFD
Where
over BFD
Time
10:01 UTC
Height
at 2,700 ft
Aircraft
C208
Sky
BASE027 TOP043
Remarks
zob
B739 at 9,000 ft, 8 nm southwest, 6:33 am EDT (10:33 UTC): no turbulence, no icing, clear from 9,000 ft to 60,000 ft, wind 295° at 13 knots, remarks: during the descent. 428 nm along the route, 8 nm southwest of the line.
as filed, and in English
```
DTW UA /OV DXO033026/TM 1033/FL090/TP B739/SK SKC/WV 29513KTS/TB NEG/IC NEG/RM DURD
```
Report
a routine report filed through DTW
Where
26 nm northeast (033°) of DXO
Time
10:33 UTC
Height
at 9,000 ft
Aircraft
B739
Sky
clear
Wind
from 295° at 13 knots
Turbulence
none
Icing
none
Remarks
during the descent
CL35 at 6,000 ft, 8 nm southwest, 6:47 am EDT (10:47 UTC): overcast from 1,400 ft to 2,600 ft; clear from 2,600 ft to 60,000 ft, remarks: clear above 2,600 ft. 448 nm along the route, 8 nm southwest of the line.
as filed, and in English
```
PTK UA /OV PTK270006/TM 1047/FL060/TP CL35/SK OVC014-TOP026/RM CLEAR ABOVE 026
```
Report
a routine report filed through PTK
Where
6 nm west (270°) of PTK
Time
10:47 UTC
Height
at 6,000 ft
Aircraft
CL35
Sky
overcast from 1,400 ft, tops 2,600 ft
Remarks
clear above 2,600 ft
BE9L at 17,000 ft, 19 nm south, 5:42 am EDT (09:42 UTC): light rime icing from 15,000 ft to 17,000 ft, 0 °C, remarks: zdvwc. 1472 nm along the route, 19 nm south of the line.
as filed, and in English
```
CPR UA /OV DDY250025/TM 0942/FL170/TP BE9L/TA 00/IC LGT RIME 150-170/RM ZDVWC
```
Report
a routine report filed through CPR
Where
25 nm west (250°) of DDY
Time
09:42 UTC
Height
at 17,000 ft
Aircraft
BE9L
Temperature
0 °C
Icing
light rime from 15,000 ft to 17,000 ft
Remarks
zdvwc

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 16 forecast points nearest it (JFK, AVP, PSB, BUF, CLE, MKG, GRB, DBQ, LSE, MCW, FSD, ONL, PIR, RAP, LND, PIH). 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	260° at 13 kt	+14 kt	16 °C	106 kt	17 h 05 min	10:07 pm MDT (04:07 UTC)
6,500 ft	270° at 12 kt	+13 kt	15 °C	107 kt	16 h 55 min	9:57 pm MDT (03:57 UTC)
8,500 ft	260° at 13 kt	+13 kt	10 °C	107 kt	16 h 55 min	9:57 pm MDT (03:57 UTC)
10,500 ft	250° at 16 kt	+16 kt	6 °C	104 kt	17 h 24 min	10:26 pm MDT (04:26 UTC)
12,500 ft	250° at 19 kt	+20 kt	2 °C	100 kt	18 h 06 min	11:08 pm MDT (05:08 UTC)
14,500 ft	250° at 20 kt	+21 kt	-3 °C	99 kt	18 h 17 min	11:19 pm MDT (05:19 UTC)
16,500 ft	250° at 21 kt	+22 kt	-7 °C	98 kt	18 h 28 min	11:30 pm MDT (05:30 UTC)
18,000 ft FL180	250° at 22 kt	+23 kt	-11 °C	97 kt	18 h 40 min	11:42 pm MDT (05:42 UTC)
24,000 ft FL240	250° at 26 kt	+27 kt	-22 °C	93 kt	19 h 28 min	12:30 am MDT (06:30 UTC)
30,000 ft FL300	260° at 34 kt	+36 kt	-35 °C	84 kt	21 h 33 min	2:35 am MDT (08:35 UTC)
34,000 ft FL340	260° at 39 kt	+42 kt	-40 °C	78 kt	23 h 12 min	4:14 am MDT (10:14 UTC)
39,000 ft FL390	270° at 45 kt	+48 kt	-48 °C	72 kt	25 h 08 min	6:10 am MDT (12:10 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
JFK	used from 0 nm out; 39 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 50 nm out; 20 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 149 nm out; 64 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°
BUF	used from 199 nm out; 56 nm from the line	300/11	330/15 11°	340/26 8°	330/28 2°	340/31 -10°	340/32 -21°	340/52 -37°	340/59 -46°	330/66 -53°
CLE	used from 298 nm out; 78 nm from the line	310/7	350/20 14°	340/16 9°	320/21 2°	320/32 -8°	330/34 -20°	330/45 -36°	320/60 -45°	320/64 -51°
MKG	used from 448 nm out; 99 nm from the line	260/28	260/18 15°	250/16 9°	260/22 4°	280/31 -9°	270/35 -21°	270/44 -35°	270/42 -45°	290/61 -51°
GRB	used from 647 nm out; 73 nm from the line	250/32	250/22 17°	240/18 8°	280/21 6°	280/34 -11°	280/35 -21°	280/39 -37°	270/52 -45°	290/60 -49°
DBQ	used from 696 nm out; 76 nm from the line	250/27	260/23 17°	240/26 10°	260/30 4°	280/26 -9°	280/36 -21°	270/41 -36°	280/52 -41°	290/67 -48°
LSE	used from 746 nm out; 32 nm from the line	250/25	240/21 17°	240/28 11°	250/28 5°	280/24 -10°	280/31 -21°	260/35 -37°	270/45 -43°	280/59 -47°
MCW	used from 845 nm out; 28 nm from the line	250/36	250/24 19°	240/26 11°	250/30 5°	270/22 -9°	260/30 -21°	260/31 -36°	280/53 -38°	280/66 -48°
FSD	used from 945 nm out; 61 nm from the line	210/20	230/23 21°	220/25 14°	230/30 5°	230/26 -9°	240/30 -21°	270/33 -36°	260/47 -37°	270/58 -47°
ONL	used from 1094 nm out; 73 nm from the line		250/31 22°	230/27 16°	220/25 8°	230/25 -9°	220/29 -22°	250/42 -33°	250/48 -36°	250/52 -46°
PIR	used from 1144 nm out; 45 nm from the line		230/15 15°	220/22 14°	220/24 6°	200/32 -10°	210/48 -22°	240/45 -33°	240/43 -37°	250/55 -46°
RAP	used from 1243 nm out; 45 nm from the line		250/28 16°	260/31 10°	240/25 4°	210/35 -10°	200/45 -23°	230/47 -31°	230/47 -36°	230/51 -46°
LND	used from 1442 nm out; 92 nm from the line			240/10 3°	240/30 0°	220/42 -13°	230/52 -23°	220/54 -33°	220/52 -36°	220/53 -44°
PIH	used from 1641 nm out; 58 nm from the line		070/8	150/19 1°	180/32 -4°	210/44 -17°	210/37 -28°	210/74 -31°	220/68 -35°	220/60 -43°

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
HPN White Plains, NY	departure	IFR Sky: overcast at 700 feet	from the north (350°) at 8 knots	10+ mi	700 ft	439 ft	6:56 am EDT (10:56 UTC)
AVP Wilkes-Barre/Scranton, PA	90 nm out, 9 nm southwest of the line, tower	marginal VFR Sky: overcast at 1,200 feet	calm	10+ mi	1,200 ft	961 ft	10:54 UTC
ERI Erie, PA	298 nm out, 13 nm south of the line, tower	marginal VFR Sky: overcast at 3,000 feet	variable at 4 knots	10+ mi	3,000 ft	732 ft	00:51 UTC
PTK Pontiac, MI	448 nm out, 7 nm south of the line, tower	IFR Sky: a broken layer at 600 feet, a broken layer at 1,100 feet	from the southwest (220°) at 5 knots	7 mi	600 ft	980 ft	10:53 UTC
MKG Muskegon, MI	567 nm out, 6 nm northwest of the line, tower	VFR Sky: scattered clouds at 25,000 feet	from the south (190°) at 8 knots	10+ mi	none	628 ft	10:55 UTC
RST Rochester, MN	845 nm out, 21 nm north of the line, tower	VFR	from the south (180°) at 10 knots	9 mi	none	1,317 ft	10:54 UTC
FSD Sioux Falls, SD	1034 nm out, 8 nm southeast of the line, tower	VFR Sky: a few clouds at 10,000 feet, a few clouds at 25,000 feet	from the north-northeast (030°) at 3 knots	10+ mi	none	1,430 ft	10:56 UTC
ICR Winner, SD	1164 nm out, 17 nm south of the line	low IFR Sky: overcast at 200 feet Weather: light rain, mist	from the north (010°) at 8 knots	3 mi	200 ft	2,032 ft	10:53 UTC
HSR Hot Springs, SD	1323 nm out, 12 nm south of the line	no report just now				3,150 ft
RIW Riverton, WY	1542 nm out, 9 nm south of the line	marginal VFR Sky: overcast at 2,000 feet	from the north (010°) at 11 knots	10+ mi	2,000 ft	5,516 ft	10:53 UTC
PIH Pocatello, ID	1721 nm out, 10 nm northwest of the line, tower	marginal VFR Sky: a few clouds at 1,000 feet, a broken layer at 2,500 feet, overcast at 3,100 feet Weather: light rain	from the west-northwest (290°) at 8 knots	8 mi	2,500 ft	4,451 ft	10:53 UTC
TWF Twin Falls, ID	destination	marginal VFR Sky: overcast at 2,600 feet	from the southwest (220°) at 8 knots	10+ mi	2,600 ft	4,153 ft	4:53 am MDT (10:53 UTC)

The highest airport on this list sits at 5,516 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At TWF when you get there the forecast at the estimated arrival, 9:57 pm MDT (03:57 UTC)

Wind from the west-southwest at 8 knots, visibility more than 6 miles, showers nearby, overcast at 4,000 feet VFR

The whole forecast for TWF

From Mon 12:00 am MDT (06:00 UTC): wind from the southwest at 8 knots, visibility more than 6 miles, light rain, a broken layer at 4,000 feet
From Mon 1:00 am MDT (07:00 UTC): wind from the southwest at 7 knots, visibility 5 miles, light rain, mist, scattered clouds at 1,500 feet, overcast at 2,500 feet
From Mon 10:00 am MDT (16:00 UTC): wind from the west at 7 knots, visibility 6 miles, light rain showers, mist, scattered clouds at 1,500 feet, a broken layer at 3,500 feet
From Mon 12:00 pm MDT (18:00 UTC): wind from the west-northwest at 6 knots, visibility more than 6 miles, showers nearby, scattered clouds at 4,000 feet, overcast at 8,000 feet
From Mon 8:00 pm MDT (02:00 UTC): wind from the west-southwest at 8 knots, visibility more than 6 miles, showers nearby, overcast at 4,000 feet

The forecast for HPN, the departure

From Mon 5:00 am EDT (09:00 UTC): wind from the north-northwest at 9 knots, visibility more than 6 miles, a broken layer at 2,000 feet
At times between Mon 5:00 am EDT (09:00 UTC) and 8:00 am EDT (12:00 UTC): a broken layer at 900 feet
From Mon 1:00 pm EDT (17:00 UTC): wind from the north-northwest at 9 knots, visibility more than 6 miles, a few clouds at 2,500 feet, scattered clouds at 5,000 feet
From Mon 10:00 pm EDT (02:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 5,000 feet, a few clouds at 15,000 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 20 nm from the route, at the departure end · security · until 20 October · ZNY

Daylight

Sunset at HPN 6:19 pm EDT (22:19 UTC), at TWF 6:59 pm MDT (00:59 UTC) (civil twilight ends 7:27 pm MDT (01:27 UTC)). At 120 knots the arrival at TWF is after sunset there (7:00 pm MDT (01:00 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 central Great Lakes · loop National Weather Service

Radar now, the upper Mississippi valley · 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: Westchester County, Joslin Fld/Magic Valley Regional.