Bozeman Yellowstone International to New York Stewart International BZN → SWF
1,615 nautical miles (1,859 statute miles) east on a straight line, true course 086°, about 073° magnetic at the departure end (variation 13E). At 120 knots that is 9 h 14 min at the quickest height in today's winds (39,000 ft, a 55-knot tailwind), arriving about 7:48 am EDT (11:48 UTC). Right now BZN is IFR, wind calm; SWF is marginal VFR, wind from the east-northeast (060°) at 10 knots, gusting to 14. 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
- SIGMET 8W: thunderstorms (a convective SIGMET) up to 35,000 ft, moving from the southwest at 40 knots, until 9:55 pm MDT (03:55 UTC). Near the route, 169 nm along the route.
as issued
WSUS33 KKCI 120155 MKCW WST 120155 CONVECTIVE SIGMET 8W VALID UNTIL 0355Z CO MT WY FROM 40N SHR-60WNW RAP-20ENE CYS-30SW CYS-10NW BOY-40N SHR AREA TS MOV FROM 22040KT. TOPS TO FL350.
- 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 429 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the first 389 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 130 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Near the route, 110 nm along the route.
- AIRMET ZULU 3C: moderate icing up to 22,000 ft. Near the route, 130 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 route from 538 to 628 nm out.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 219 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). Over the last 189 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1436 to 1595 nm out.
- AIRMET ZULU 1C: moderate icing up to 22,000 ft. Near the route, 1515 nm along the route.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 13,000 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 BZN.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
Not fetched just now.
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 14 forecast points nearest it (BIL, MLS, DIK, ABR, AXN, MSP, LSE, GRB, TVC, CLE, BUF, SYR, AVP, JFK). 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 | 260° at 12 kt | −11 kt | 131 kt | 12 h 20 min | 10:54 am EDT (14:54 UTC) | |
| 5,500 ft | 240° at 6 kt | −6 kt | 5 °C | 126 kt | 12 h 49 min | 11:23 am EDT (15:23 UTC) |
| 7,500 ft | 240° at 10 kt | −9 kt | 10 °C | 129 kt | 12 h 31 min | 11:05 am EDT (15:05 UTC) |
| 9,500 ft | 240° at 14 kt | −13 kt | 7 °C | 133 kt | 12 h 09 min | 10:43 am EDT (14:43 UTC) |
| 11,500 ft | 240° at 20 kt | −17 kt | 4 °C | 137 kt | 11 h 47 min | 10:21 am EDT (14:21 UTC) |
| 13,500 ft | 240° at 23 kt | −21 kt | 0 °C | 141 kt | 11 h 27 min | 10:01 am EDT (14:01 UTC) |
| 15,500 ft | 250° at 25 kt | −24 kt | -5 °C | 144 kt | 11 h 13 min | 9:47 am EDT (13:47 UTC) |
| 17,500 ft | 250° at 27 kt | −26 kt | -9 °C | 146 kt | 11 h 04 min | 9:38 am EDT (13:38 UTC) |
| 18,000 ft FL180 | 260° at 27 kt | −27 kt | -10 °C | 147 kt | 10 h 59 min | 9:33 am EDT (13:33 UTC) |
| 24,000 ft FL240 | 260° at 29 kt | −29 kt | -21 °C | 149 kt | 10 h 50 min | 9:24 am EDT (13:24 UTC) |
| 30,000 ft FL300 | 260° at 33 kt | −33 kt | -36 °C | 153 kt | 10 h 33 min | 9:07 am EDT (13:07 UTC) |
| 34,000 ft FL340 | 260° at 43 kt | −43 kt | -43 °C | 163 kt | 9 h 54 min | 8:28 am EDT (12:28 UTC) |
| 39,000 ft FL390 | 270° at 54 kt | −55 kt | -50 °C | 175 kt | 9 h 14 min | 7:48 am EDT (11:48 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| BIL | used from 0 nm out; 84 nm from the line | 080/13 | 180/9 -2° | 210/38 0° | 220/51 -11° | 210/46 -22° | 210/58 -35° | 230/73 -39° | 230/72 -45° | |
| MLS | used from 150 nm out; 55 nm from the line | 150/23 2° | 190/29 4° | 210/44 2° | 220/32 -10° | 210/36 -21° | 200/48 -37° | 230/63 -40° | 240/71 -47° | |
| DIK | used from 299 nm out; 59 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° | |
| ABR | used from 449 nm out; 63 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° |
| AXN | used from 598 nm out; 41 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° |
| MSP | used from 698 nm out; 42 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 847 nm out; 74 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 897 nm out; 53 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 1047 nm out; 31 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° |
| CLE | used from 1196 nm out; 137 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° |
| BUF | used from 1296 nm out; 72 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 1446 nm out; 64 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° |
| AVP | used from 1495 nm out; 47 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° |
| JFK | used from 1595 nm out; 61 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° |
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 |
|---|---|---|---|---|---|---|---|
| BZN Bozeman, MT | departure | IFR Sky: scattered clouds at 400 feet, overcast at 1,400 feet Weather: light snow, mist | calm | 1 mi | 1,400 ft | 4,473 ft | 8:22 pm MDT (02:22 UTC) |
| BIL Billings, MT | 110 nm out, 5 nm south of the line, tower | IFR Sky: a broken layer at 800 feet, overcast at 1,200 feet Weather: light rain, light snow, mist | from the north (010°) at 13 knots | 5 mi | 800 ft | 3,662 ft | 01:53 UTC |
| LEM Lemmon, SD | 379 nm out, 2 nm north of the line | no report just now | 2,572 ft | ||||
| MOX Morris, MN | 638 nm out, 2 nm west of the line | VFR Sky: a few clouds at 10,000 feet, a few clouds at 12,000 feet | from the northwest (310°) at 9 knots, gusting to 16 | 7 mi | none | 1,135 ft | 01:55 UTC |
| STC St Cloud, MN | 718 nm out, 9 nm north of the line, tower | VFR | from the north (360°) at 4 knots | 10+ mi | none | 1,030 ft | 01:53 UTC |
| CWA Mosinee, WI | 907 nm out, 5 nm south of the line, tower | VFR | from the south (180°) at 7 knots | 10+ mi | none | 1,277 ft | 01:50 UTC |
| GRB Green Bay, WI | 977 nm out, 10 nm southwest of the line, tower | VFR | from the south (190°) at 6 knots | 10+ mi | none | 695 ft | 01:53 UTC |
| MBS Saginaw, MI | 1157 nm out, 24 nm south of the line, tower | VFR | from the south (180°) at 6 knots | 10+ mi | none | 668 ft | 01:53 UTC |
| BUF Buffalo, NY | 1396 nm out, 10 nm north of the line, tower | VFR Sky: a few clouds at 5,000 feet, scattered clouds at 10,000 feet, scattered clouds at 16,000 feet | from the east-northeast (060°) at 6 knots | 10+ mi | none | 726 ft | 01:54 UTC |
| ELM Elmira/Corning, NY | 1486 nm out, 8 nm southwest of the line, tower | VFR Sky: a few clouds at 200 feet, scattered clouds at 1,000 feet, overcast at 3,300 feet | from the northeast (040°) at 3 knots | 10+ mi | 3,300 ft | 955 ft | 02:12 UTC |
| SWF New York, NY | destination | marginal VFR Sky: a few clouds at 700 feet, overcast at 1,500 feet Weather: light rain, mist | from the east-northeast (060°) at 10 knots, gusting to 14 | 3 mi | 1,500 ft | 490 ft | 7:45 pm EDT (23:45 UTC) |
The highest airport on this list sits at 4,473 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At SWF when you get there the forecast at the estimated arrival, 7:48 am EDT (11:48 UTC)
Wind from the north-northeast at 5 knots, visibility more than 6 miles, a broken layer at 800 feet, overcast at 1,500 feet IFR
The whole forecast for SWF
- From Sun 8:00 pm EDT (00:00 UTC): wind from the east at 9 knots, visibility 4 miles, rain, mist, a broken layer at 600 feet, overcast at 1,000 feet
- From Sun 10:00 pm EDT (02:00 UTC): wind from the northeast at 7 knots, visibility 5 miles, light rain showers, mist, a few clouds at 400 feet, overcast at 600 feet
- From Mon 7:00 am EDT (11:00 UTC): wind from the north-northeast at 5 knots, visibility more than 6 miles, a broken layer at 800 feet, overcast at 1,500 feet
- From Mon 9:00 am EDT (13:00 UTC): wind from the north-northeast at 6 knots, visibility more than 6 miles, a broken layer at 2,000 feet
- From Mon 12:00 pm EDT (16:00 UTC): wind from the north at 7 knots, visibility more than 6 miles, a few clouds at 2,000 feet, a broken layer at 5,000 feet
- From Mon 4:00 pm EDT (20:00 UTC): wind from the northwest at 6 knots, visibility more than 6 miles, scattered clouds at 5,000 feet
- From Mon 9:00 pm EDT (01:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 5,000 feet
The forecast for BZN, the departure
- From Sun 6:00 pm MDT (00:00 UTC): wind light and variable, visibility ½ mile, snow, fog, overcast at 300 feet
- At times between Sun 9:00 pm MDT (03:00 UTC) and 12:00 am MDT (06:00 UTC): visibility 2 miles, light snow, mist, scattered clouds at 300 feet, overcast at 1,200 feet
- From Mon 12:00 am MDT (06:00 UTC): wind from the west at 7 knots, visibility 2 miles, light snow, mist, overcast at 800 feet
- At times between Mon 12:00 am MDT (06:00 UTC) and 3:00 am MDT (09:00 UTC): visibility 6 miles, light snow, mist, overcast at 800 feet
- From Mon 3:00 am MDT (09:00 UTC): wind light and variable, visibility more than 6 miles, overcast at 800 feet
- From Mon 12:00 pm MDT (18:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 800 feet, overcast at 2,000 feet
- From Mon 5:00 pm MDT (23:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 1,500 feet, a broken layer at 11,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/6656 ANOKA, MN, Monday, October 5, 2026 through Monday, October 19, 2026 Local 6 nm from the route, 748 nm along the route · security · until 19 October · ZMP
Daylight
Sunset at BZN 6:44 pm MDT (00:44 UTC), at SWF 6:20 pm EDT (22:20 UTC) (civil twilight ends 6:48 pm EDT (22:48 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: Bozeman Yellowstone International, New York Stewart International.
