Westchester County to Bismarck Municipal HPN → BIS
1,212 nautical miles (1,394 statute miles) northwest on a straight line, true course 296°, about 309° magnetic at the departure end (variation 13W). At 120 knots that is 11 h 01 min at the quickest height in today's winds (4,500 ft, a 10-knot headwind), arriving about 12:07 pm CDT (17:07 UTC). Right now HPN is IFR, wind from the north (360°) at 8 knots; BIS is IFR, wind variable at 5 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). Over the first 526 nm of the route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the first 199 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 60 to 209 nm out.
- 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 685 to 785 nm out.
- 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 218 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 B39M at 35,000 ft, 36 nm southwest, 11:15 pm EDT (03:15 UTC): remarks: no inj/dmg zob. 298 nm along the route, 36 nm southwest of the line.
as filed, and in English
DKK UUA /OV DKK280040/TM 0315/FL350/TP B39M/TB MTN WVE ACTN +/-5KTS/RM NO INJ/DMG ZOB
- Report
- an urgent report filed through DKK
- Where
- 40 nm west (280°) of DKK
- Time
- 03:15 UTC
- Height
- at 35,000 ft
- Aircraft
- B39M
- Turbulence
- mountain wve actn a 5-knot loss of airspeed
- Remarks
- no inj/dmg zob
- GA6C descending, 13 nm north, 12:32 am EDT (04:32 UTC): overcast above 1,000 ft, remarks: bases OVC010. At the departure end, 13 nm north of the line.
as filed, and in English
SWF UA /OV SWF 270005/TM 0432/FLDURD/TP GA6C/SK OVC010/RM BASES OVC010
- Report
- a routine report filed through SWF
- Where
- 5 nm west (270°) of SWF
- Time
- 04:32 UTC
- Height
- during the descent
- Aircraft
- GA6C
- Sky
- overcast from 1,000 ft
- Remarks
- bases OVC010
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 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 13 forecast points nearest it (JFK, AVP, SYR, BUF, CLE, TVC, GRB, LSE, DLH, MSP, AXN, ABR, DIK). 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 | 270° at 10 kt | +10 kt | 7 °C | 110 kt | 11 h 01 min | 12:07 pm CDT (17:07 UTC) |
| 6,500 ft | 280° at 13 kt | +13 kt | 13 °C | 107 kt | 11 h 20 min | 12:26 pm CDT (17:26 UTC) |
| 8,500 ft | 270° at 14 kt | +14 kt | 10 °C | 106 kt | 11 h 26 min | 12:32 pm CDT (17:32 UTC) |
| 10,500 ft | 260° at 16 kt | +15 kt | 6 °C | 105 kt | 11 h 33 min | 12:39 pm CDT (17:39 UTC) |
| 12,500 ft | 260° at 18 kt | +17 kt | 3 °C | 103 kt | 11 h 46 min | 12:52 pm CDT (17:52 UTC) |
| 14,500 ft | 270° at 21 kt | +20 kt | -2 °C | 100 kt | 12 h 07 min | 1:13 pm CDT (18:13 UTC) |
| 16,500 ft | 270° at 24 kt | +23 kt | -7 °C | 97 kt | 12 h 30 min | 1:36 pm CDT (18:36 UTC) |
| 18,000 ft FL180 | 270° at 26 kt | +26 kt | -10 °C | 94 kt | 12 h 54 min | 2:00 pm CDT (19:00 UTC) |
| 24,000 ft FL240 | 270° at 31 kt | +30 kt | -21 °C | 90 kt | 13 h 28 min | 2:34 pm CDT (19:34 UTC) |
| 30,000 ft FL300 | 280° at 36 kt | +35 kt | -36 °C | 85 kt | 14 h 16 min | 3:22 pm CDT (20:22 UTC) |
| 34,000 ft FL340 | 270° at 42 kt | +40 kt | -44 °C | 80 kt | 15 h 09 min | 4:15 pm CDT (21:15 UTC) |
| 39,000 ft FL390 | 270° at 53 kt | +52 kt | -51 °C | 68 kt | 17 h 49 min | 6:55 pm CDT (23:55 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| JFK | used from 0 nm out; 41 nm from the line | 250/18 | 250/23 14° | 240/33 9° | 240/33 4° | 240/38 -10° | 240/45 -21° | 230/86 -32° | 230/102 -40° | 230/84 -51° |
| AVP | used from 50 nm out; 28 nm from the line | 150/5 | 350/13 12° | 270/20 8° | 260/17 4° | 260/25 -11° | 240/31 -22° | 240/54 -35° | 230/61 -41° | 240/55 -49° |
| SYR | used from 149 nm out; 72 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° |
| BUF | used from 199 nm out; 30 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° |
| CLE | used from 397 nm out; 144 nm from the line | 340/7 | 010/16 13° | 350/18 8° | 350/20 3° | 340/31 -10° | 340/46 -21° | 340/54 -37° | 330/62 -44° | 340/65 -49° |
| TVC | used from 447 nm out; 95 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° |
| GRB | used from 596 nm out; 56 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° |
| LSE | used from 745 nm out; 103 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° |
| DLH | used from 795 nm out; 78 nm from the line | 080/28 | 240/21 15° | 250/26 9° | 250/32 3° | 260/42 -11° | 270/40 -21° | 260/43 -36° | 260/46 -46° | 260/65 -54° |
| MSP | used from 844 nm out; 63 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° |
| AXN | used from 894 nm out; 69 nm from the line | 100/14 | 250/21 14° | 240/24 12° | 240/31 5° | 260/36 -10° | 260/40 -21° | 250/42 -36° | 260/48 -45° | 260/53 -50° |
| ABR | used from 1043 nm out; 76 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° |
| DIK | used from 1192 nm out; 95 nm from the line | 150/24 7° | 200/38 6° | 220/53 0° | 230/51 -9° | 230/49 -21° | 240/37 -37° | 240/47 -44° | 250/65 -48° |
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: a broken layer at 800 feet, overcast at 1,600 feet | from the north (360°) at 8 knots | 10+ mi | 800 ft | 439 ft | 1:56 am EDT (05:56 UTC) |
| SWF New York, NY | 30 nm out, 16 nm northeast of the line, tower | marginal VFR Sky: scattered clouds at 700 feet, overcast at 2,000 feet | from the north-northeast (030°) at 9 knots | 7 mi | 2,000 ft | 490 ft | 05:45 UTC |
| ELM Elmira/Corning, NY | 159 nm out, 2 nm east of the line, tower | low IFR Sky: overcast at 200 feet | calm | 10+ mi | 200 ft | 955 ft | 05:53 UTC |
| BUF Buffalo, NY | 248 nm out, 12 nm north of the line, tower | VFR Sky: scattered clouds at 12,000 feet, a broken layer at 14,000 feet | from the south (170°) at 3 knots | 10+ mi | 14,000 ft | 726 ft | 05:54 UTC |
| BAX Bad Axe, MI | 437 nm out, 8 nm southwest of the line | IFR Sky: overcast at 700 feet | from the southwest (230°) at 6 knots | 10+ mi | 700 ft | 763 ft | 05:55 UTC |
| TVC Traverse City, MI | 566 nm out, 13 nm north of the line, tower | VFR | from the south-southwest (200°) at 9 knots | 10+ mi | none | 623 ft | 05:53 UTC |
| SUE Sturgeon Bay, WI | 646 nm out, 4 nm southeast of the line | VFR | from the southwest (230°) at 9 knots | 10+ mi | none | 724 ft | 05:57 UTC |
| SSQ Shell Lake, WI | 844 nm out, 4 nm east of the line | no report just now | 1,233 ft | ||||
| GTG Grantsburg, WI | 874 nm out, 3 nm southeast of the line | no report just now | 927 ft | ||||
| FFM Fergus Falls, MN | 1023 nm out, 4 nm southeast of the line | marginal VFR Sky: overcast at 1,100 feet | from the north-northeast (030°) at 7 knots | 10+ mi | 1,100 ft | 1,182 ft | 05:55 UTC |
| JMS Jamestown, ND | 1132 nm out, 20 nm north of the line | IFR Sky: overcast at 600 feet | from the north-northeast (020°) at 12 knots | 10+ mi | 600 ft | 1,499 ft | 05:56 UTC |
| BIS Bismarck, ND | destination | IFR Sky: overcast at 700 feet Weather: light rain | variable at 5 knots | 10+ mi | 700 ft | 1,661 ft | 12:52 am CDT (05:52 UTC) |
The highest airport on this list sits at 1,661 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At BIS when you get there the forecast at the estimated arrival, 12:07 pm CDT (17:07 UTC)
Wind from the northeast at 10 knots, visibility more than 6 miles, light rain showers, overcast at 700 feet IFR
The whole forecast for BIS
- From Mon 1:00 am CDT (06:00 UTC): wind from the northeast at 10 knots, visibility more than 6 miles, light rain showers, overcast at 700 feet
- At times between Mon 1:00 am CDT (06:00 UTC) and 3:00 am CDT (08:00 UTC): visibility 3 miles, light rain, mist
- From Mon 1:00 pm CDT (18:00 UTC): wind from the north at 8 knots, visibility more than 6 miles, overcast at 800 feet
- From Mon 4:00 pm CDT (21:00 UTC): wind from the north-northwest at 9 knots, visibility more than 6 miles, overcast at 1,000 feet
The forecast for HPN, the departure
- From Mon 2:00 am EDT (06:00 UTC): wind from the north at 10 knots, visibility 6 miles, mist, showers nearby, overcast at 600 feet
- From Mon 7:00 am EDT (11:00 UTC): wind from the north at 9 knots, visibility more than 6 miles, overcast at 800 feet
- From Mon 10:00 am EDT (14:00 UTC): wind from the north-northwest at 9 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 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 21 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 BIS 6:59 pm CDT (23:59 UTC) (civil twilight ends 7:30 pm CDT (00:30 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
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, Bismarck Municipal.