John F Kennedy International to Nampa Municipal JFK → MAN
1,891 nautical miles (2,176 statute miles) west on a straight line, true course 290°, about 303° magnetic at the departure end (variation 13W). At 120 knots that is 16 h 44 min at the quickest height in today's winds (4,500 ft, a 7-knot headwind), arriving about 4:30 pm MDT (22:30 UTC). 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: 903 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 E19E: thunderstorms (a convective SIGMET) up to 43,000 ft, moving from the southwest at 20 knots, until 2:55 am EDT (06:55 UTC). Over the first 30 nm of the route.
as issued
WSUS31 KKCI 120455 MKCE WST 120455 CONVECTIVE SIGMET 19E VALID UNTIL 0655Z CT NY NJ PA DE MD VA DC WV AND DE NJ NY MD CT VA CSTL WTRS FROM 20NNW HTO-70SSE HTO-90SE SIE-20WNW LYH-40ESE AIR-20NNW HTO AREA EMBD TS MOV FROM 24020KT. TOPS TO FL430.
- SIGMET 8C: thunderstorms (a convective SIGMET) up to 32,000 ft, moving from the southwest at 40 knots, until 2:55 am EDT (06:55 UTC). Near the route, 1354 nm along the route.
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 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the first 557 nm of the route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the first 209 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 90 to 259 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 707 to 876 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 route from 1005 to 1821 nm out.
- 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 1324 to 1533 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the route from 1354 to 1553 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 1383 to 1573 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 1423 to 1861 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1473 to 1851 nm out.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the last 159 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 JFK.
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 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 (JFK, AVP, PSB, BUF, CLE, MKG, GRB, LSE, MSP, FSD, ABR, PIR, RAP, BIL, LND, DLN, PIH, BOI). 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 | 240° at 9 kt | +7 kt | 12 °C | 113 kt | 16 h 44 min | 4:30 pm MDT (22:30 UTC) |
| 6,500 ft | 250° at 9 kt | +9 kt | 13 °C | 111 kt | 17 h 02 min | 4:48 pm MDT (22:48 UTC) |
| 8,500 ft | 240° at 12 kt | +10 kt | 10 °C | 110 kt | 17 h 11 min | 4:57 pm MDT (22:57 UTC) |
| 10,500 ft | 240° at 15 kt | +13 kt | 5 °C | 107 kt | 17 h 40 min | 5:26 pm MDT (23:26 UTC) |
| 12,500 ft | 240° at 18 kt | +15 kt | 2 °C | 105 kt | 18 h 01 min | 5:47 pm MDT (23:47 UTC) |
| 14,500 ft | 240° at 20 kt | +18 kt | -3 °C | 102 kt | 18 h 32 min | 6:18 pm MDT (00:18 UTC) |
| 16,500 ft | 250° at 22 kt | +21 kt | -7 °C | 99 kt | 19 h 06 min | 6:52 pm MDT (00:52 UTC) |
| 18,000 ft FL180 | 250° at 24 kt | +24 kt | -11 °C | 96 kt | 19 h 42 min | 7:28 pm MDT (01:28 UTC) |
| 24,000 ft FL240 | 250° at 30 kt | +29 kt | -22 °C | 91 kt | 20 h 47 min | 8:33 pm MDT (02:33 UTC) |
| 30,000 ft FL300 | 250° at 36 kt | +36 kt | -35 °C | 84 kt | 22 h 31 min | 10:17 pm MDT (04:17 UTC) |
| 34,000 ft FL340 | 260° at 45 kt | +45 kt | -41 °C | 75 kt | 25 h 13 min | 12:59 am MDT (06:59 UTC) |
| 39,000 ft FL390 | 260° at 50 kt | +51 kt | -48 °C | 69 kt | 27 h 24 min | 3:10 am MDT (09:10 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; 25 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; 25 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° |
| PSB | used from 149 nm out; 50 nm from the line | 360/13 13° | 330/14 7° | 300/11 3° | 290/12 -11° | 240/23 -23° | 270/25 -36° | 250/34 -40° | 250/45 -48° | |
| BUF | used from 249 nm out; 65 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 299 nm out; 75 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° |
| MKG | used from 448 nm out; 104 nm from the line | 260/22 | 290/16 15° | 300/11 10° | 290/5 3° | 300/26 -9° | 300/32 -20° | 320/48 -36° | 320/61 -45° | 310/74 -53° |
| GRB | used from 647 nm out; 58 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 746 nm out; 28 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° |
| MSP | used from 846 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° |
| FSD | used from 946 nm out; 76 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° |
| ABR | used from 1095 nm out; 66 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° |
| PIR | used from 1145 nm out; 20 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° | |
| RAP | used from 1244 nm out; 45 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° | |
| BIL | used from 1443 nm out; 115 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° | |
| LND | used from 1543 nm out; 87 nm from the line | 200/23 6° | 220/31 1° | 220/39 -11° | 230/39 -23° | 220/51 -28° | 220/66 -37° | 230/68 -45° | ||
| DLN | used from 1642 nm out; 85 nm from the line | 090/6 -6° | 240/22 -4° | 210/34 -16° | 210/62 -25° | 210/66 -34° | 210/82 -36° | 220/77 -42° | ||
| PIH | used from 1692 nm out; 65 nm from the line | L/V | 240/13 1° | 240/15 -3° | 210/42 -15° | 200/70 -25° | 220/74 -29° | 220/71 -36° | 220/62 -43° | |
| BOI | used from 1791 nm out; 62 nm from the line | 300/7 2° | 280/5 -4° | 210/16 -9° | 210/60 -20° | 210/75 -29° | 210/63 -32° | 220/64 -32° | 220/54 -39° |
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 |
|---|---|---|---|---|---|---|---|
| JFK New York, NY | departure | no report just now | 13 ft | ||||
| MMU Morristown, NJ | 30 nm out, 1 nm southwest of the line, tower | no report just now | 186 ft | ||||
| ERI Erie, PA | 299 nm out, 5 nm southwest of the line, tower | no report just now | 732 ft | ||||
| PTK Pontiac, MI | 448 nm out, 7 nm south of the line, tower | no report just now | 980 ft | ||||
| MKG Muskegon, MI | 577 nm out, 4 nm south of the line, tower | no report just now | 628 ft | ||||
| LSE La Crosse, WI | 796 nm out, 3 nm northwest of the line, tower | no report just now | 655 ft | ||||
| TKC Tracy, MN | 985 nm out, 4 nm northwest of the line | no report just now | 1,335 ft | ||||
| RAP Rapid City, SD | 1304 nm out, 23 nm south of the line, tower | no report just now | 3,203 ft | ||||
| GCC Gillette, WY | 1413 nm out, 3 nm southwest of the line | no report just now | 4,365 ft | ||||
| GEY Greybull, WY | 1523 nm out, 13 nm north of the line | no report just now | 3,941 ft | ||||
| SUN Hailey, ID | 1791 nm out, 20 nm south of the line, tower | no report just now | 5,319 ft | ||||
| MAN Nampa, ID | destination | no report just now | 2,537 ft |
The highest airport on this list sits at 5,319 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At MAN when you get there the forecast at the estimated arrival, 4:30 pm MDT (22:30 UTC)
MAN has no terminal forecast; use the nearest airport that does.
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 3 nm from the route, at the departure end · security · until 20 October · ZNY
Daylight
Sunset at JFK 6:19 pm EDT (22:19 UTC), at MAN 7:08 pm MDT (01:08 UTC) (civil twilight ends 7:36 pm MDT (01:36 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: John F Kennedy International, Nampa Municipal.
