Boeing Fld/King County International to Yuma Mcas/Yuma International BFI → NYL
959 nautical miles (1,104 statute miles) southeast on a straight line, true course 156°, about 141° magnetic at the departure end (variation 15E). At 120 knots that is 7 h 09 min at the quickest height in today's winds (24,000 ft, a 14-knot tailwind), arriving about 11:34 am MST (18:34 UTC). Right now BFI is VFR, wind calm; NYL is VFR, wind from the east-southeast (120°) at 4 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 TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the route from 40 to 480 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 210 to 590 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 550 to 560 nm out.
- AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 630 to 779 nm out.
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 BFI.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
No pilot reports within 50 nautical miles of the line in the last three hours.
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 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 8 forecast points nearest it (SEA, YKM, RDM, LKV, BAM, BIH, LAS, BLH). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 5,500 ft | 240° at 5 kt | +1 kt | 3 °C | 119 kt | 8 h 04 min | 12:29 pm MST (19:29 UTC) |
| 7,500 ft | 280° at 3 kt | −1 kt | -1 °C | 121 kt | 7 h 56 min | 12:21 pm MST (19:21 UTC) |
| 9,500 ft | 280° at 2 kt | −1 kt | -3 °C | 121 kt | 7 h 56 min | 12:21 pm MST (19:21 UTC) |
| 11,500 ft | 280° at 4 kt | −1 kt | -7 °C | 121 kt | 7 h 56 min | 12:21 pm MST (19:21 UTC) |
| 13,500 ft | 280° at 6 kt | −2 kt | -10 °C | 122 kt | 7 h 52 min | 12:17 pm MST (19:17 UTC) |
| 15,500 ft | 280° at 7 kt | −3 kt | -12 °C | 123 kt | 7 h 48 min | 12:13 pm MST (19:13 UTC) |
| 17,500 ft | 280° at 9 kt | −3 kt | -15 °C | 123 kt | 7 h 48 min | 12:13 pm MST (19:13 UTC) |
| 18,000 ft FL180 | 280° at 9 kt | −4 kt | -16 °C | 124 kt | 7 h 44 min | 12:09 pm MST (19:09 UTC) |
| 24,000 ft FL240 | 300° at 19 kt | −14 kt | -25 °C | 134 kt | 7 h 09 min | 11:34 am MST (18:34 UTC) |
| 30,000 ft FL300 | 280° at 22 kt | −9 kt | -33 °C | 129 kt | 7 h 26 min | 11:51 am MST (18:51 UTC) |
| 34,000 ft FL340 | 250° at 31 kt | 0 | -38 °C | 120 kt | 8 h | 12:25 pm MST (19:25 UTC) |
| 39,000 ft FL390 | 230° at 36 kt | +13 kt | -43 °C | 107 kt | 8 h 58 min | 1:23 pm MST (20:23 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| SEA | used from 0 nm out; 21 nm from the line | 350/5 | 010/6 0° | 010/9 -4° | 010/27 -6° | 010/51 -15° | 360/58 -26° | 360/60 -41° | 350/55 -48° | 340/30 -45° |
| YKM | used from 50 nm out; 43 nm from the line | 360/6 | 360/11 -1° | 030/20 -7° | 040/21 -11° | 020/55 -18° | 010/84 -26° | 010/79 -40° | 010/45 -42° | 350/23 -42° |
| RDM | used from 150 nm out; 43 nm from the line | 360/14 -2° | 020/25 -8° | 360/34 -13° | 360/75 -16° | 360/88 -25° | 360/80 -39° | 350/47 -42° | 360/11 -43° | |
| LKV | used from 250 nm out; 76 nm from the line | 010/10 -8° | 360/20 -11° | 360/58 -19° | 360/92 -25° | 350/69 -37° | 310/34 -37° | 240/26 -41° | ||
| BAM | used from 400 nm out; 77 nm from the line | 280/9 -2° | 260/18 -8° | 190/47 -19° | 200/50 -29° | 210/56 -29° | 220/54 -34° | 220/45 -42° | ||
| BIH | used from 550 nm out; 93 nm from the line | L/V | 020/6 0° | 140/7 -7° | 210/31 -16° | 230/34 -26° | 220/43 -30° | 220/52 -36° | 220/46 -43° | |
| LAS | used from 699 nm out; 53 nm from the line | 210/20 8° | 210/29 4° | 200/32 -3° | 200/51 -15° | 210/64 -21° | 220/70 -30° | 220/66 -38° | 220/55 -44° | |
| BLH | used from 799 nm out; 80 nm from the line | 240/19 | 210/20 10° | 200/27 4° | 210/34 -2° | 220/59 -10° | 220/67 -20° | 220/75 -29° | 230/78 -38° | 220/90 -47° |
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 |
|---|---|---|---|---|---|---|---|
| BFI Seattle, WA | departure | VFR | calm | 10+ mi | none | 21 ft | 3:53 am PDT (10:53 UTC) |
| PLU Puyallup, WA | 20 nm out, 11 nm southwest of the line | VFR Sky: a few clouds at 7,500 feet Weather: light drizzle | calm | 10+ mi | none | 537 ft | 11:15 UTC |
| DLS The Dalles, OR | 120 nm out, 5 nm south of the line | VFR Sky: overcast at 11,000 feet | calm | 10+ mi | 11,000 ft | 246 ft | 10:53 UTC |
| TMT Austin, NV | 530 nm out, 21 nm east of the line | VFR Sky: scattered clouds at 6,000 feet, a broken layer at 8,000 feet, overcast at 10,000 feet | calm | 10+ mi | 8,000 ft | 5,735 ft | 11:15 UTC |
| TPH Tonopah, NV | 610 nm out, 5 nm southwest of the line | VFR Sky: scattered clouds at 4,900 feet, a broken layer at 5,500 feet, a broken layer at 8,500 feet | from the south-southwest (210°) at 6 knots | 10+ mi | 5,500 ft | 5,430 ft | 10:56 UTC |
| BTY Beatty, NV | 689 nm out, 16 nm west of the line | no report just now | 3,169 ft | ||||
| BLH Blythe, CA | 899 nm out, 14 nm east of the line | VFR Sky: a broken layer at 7,000 feet, overcast at 11,000 feet | from the south-southeast (150°) at 6 knots | 10+ mi | 7,000 ft | 399 ft | 10:52 UTC |
| NYL Yuma, AZ | destination | VFR Sky: overcast at 6,500 feet | from the east-southeast (120°) at 4 knots | 10+ mi | 6,500 ft | 213 ft | 3:57 am MST (10:57 UTC) |
The highest airport on this list sits at 5,735 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At NYL when you get there the forecast at the estimated arrival, 11:34 am MST (18:34 UTC)
Wind light and variable, a broken layer at 8,000 feet VFR
The whole forecast for NYL
- From Mon 1:00 am MST (08:00 UTC): wind light and variable, a broken layer at 8,000 feet
- Changing between Mon 4:00 am MST (11:00 UTC) and 7:00 am MST (14:00 UTC) to: wind light and variable, a few clouds at 5,000 feet, scattered clouds at 8,000 feet and more above
- From Mon 5:00 pm MST (00:00 UTC): wind from the west at 9 knots, overcast at 8,000 feet
- From Mon 11:00 pm MST (06:00 UTC): wind from the northwest at 10 knots, gusting to 20, a few clouds at 2,000 feet, scattered clouds at 7,000 feet
- From Tue 5:00 am MST (12:00 UTC): wind from the west at 7 knots, gusting to 17, clear skies
The forecast for BFI, the departure
- From Mon 5:00 am PDT (12:00 UTC): wind light and variable, visibility more than 6 miles, clear skies
- From Mon 12:00 pm PDT (19:00 UTC): wind from the west-southwest at 4 knots, visibility more than 6 miles, clear skies
- From Mon 2:00 pm PDT (21:00 UTC): wind from the west-northwest at 5 knots, visibility more than 6 miles, clear skies
- From Mon 8:00 pm PDT (03:00 UTC): wind calm, visibility more than 6 miles, scattered clouds at 25,000 feet
- From Tue 4:00 am PDT (11:00 UTC): wind from the south-southeast at 4 knots, visibility more than 6 miles, overcast at 10,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/8890 LAS VEGAS, NV, Tuesday, October 13, 2026 Local 13 nm from the route, 759 nm along the route · a VIP movement · starts tomorrow · ZLA
- 6/8891 Bullhead City, AZ, Wednesday, October 14, 2026 Local 22 nm from the route, 819 nm along the route · a VIP movement · starts Wednesday 14 October · ZLA
- 6/2656 Coyote Wells, CA, Saturday, July 4, 2026 through Saturday, January 2, 2027 Local 8 nm from the route, at the destination end · security · until 2 January · ZLA
- 6/2657 Calexico, CA, Saturday, July 4, 2026 through Saturday, January 2, 2027 Local 8 nm from the route, at the destination end · security · until 2 January · ZLA
Daylight
Sunset at BFI 6:25 pm PDT (01:25 UTC), at NYL 6:08 pm MST (01:08 UTC) (civil twilight ends 6:32 pm MST (01:32 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: Boeing Fld/King County International, Yuma Mcas/Yuma International.