Yuma Mcas/Yuma International to Boeing Fld/King County International NYL → BFI
959 nautical miles (1,104 statute miles) north on a straight line, true course 341°, about 328° magnetic at the departure end (variation 13E). At 120 knots that is 7 h 19 min at the quickest height in today's winds (39,000 ft, a 11-knot tailwind), arriving about 6:14 am PDT (13:14 UTC), after sunset at the destination. Right now NYL is VFR, wind from the north-northwest (330°) at 6 knots; BFI is VFR, wind calm. 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 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft. Over the route from 10 to 140 nm out.
- AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. Over the route from 110 to 260 nm out.
- AIRMET TANGO 3W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Near the route, 230 nm along the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 270 to 310 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 350 to 410 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 410 to 430 nm out.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 380 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 709 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 NYL.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- PC12 at 17,000 ft, 36 nm west, 9:52 pm MST (04:52 UTC): moderate turbulence, moderate rime icing, -15 °C, remarks: entered by zoa fdcs. 350 nm along the route, 36 nm west of the line.
as filed, and in English
TPH UA /OV OAL/TM 0452/FL 170/TP PC12/TA M15/TB MOD/IC MOD RIME/RM ENTERED BY ZOA FDCS AWC-WEB
- Report
- a routine report filed through TPH
- Where
- over OAL
- Time
- 04:52 UTC
- Height
- at 17,000 ft
- Aircraft
- PC12
- Temperature
- −15 °C
- Turbulence
- moderate
- Icing
- moderate rime
- Remarks
- entered by zoa fdcs
- B737 at 14,500 ft, 40 nm east, 10:30 pm MST (05:30 UTC): light turbulence. 190 nm along the route, 40 nm east of the line.
as filed, and in English
LAS UA /OV LAS155012/TM 0530/FL145/TP B737/TB LGT
- Report
- a routine report filed through LAS
- Where
- 12 nm southeast (155°) of LAS
- Time
- 05:30 UTC
- Height
- at 14,500 ft
- Aircraft
- B737
- Turbulence
- light
- B737 at 16,000 ft, 3 nm south, 8:45 pm MST (03:45 UTC): light rime icing, -9 °C. 190 nm along the route, 3 nm south of the line.
as filed, and in English
LAS UA /OV LAS215045/TM 0345/FL160/TP B737/TA M09/IC LGT RIME
- Report
- a routine report filed through LAS
- Where
- 45 nm southwest (215°) of LAS
- Time
- 03:45 UTC
- Height
- at 16,000 ft
- Aircraft
- B737
- Temperature
- −9 °C
- Icing
- light rime
- B737 at 10,000 ft, 35 nm west, 9:25 pm MST (04:25 UTC): no icing, remarks: during the descent runway 5. 759 nm along the route, 35 nm west of the line.
as filed, and in English
RDM UA /OV RDM/TM 0425/FL100/TP B737/TA UNKN/IC NEG/RM DURD RWY 5
- Report
- a routine report filed through RDM
- Where
- over RDM
- Time
- 04:25 UTC
- Height
- at 10,000 ft
- Aircraft
- B737
- Temperature
- UNKN
- Icing
- none
- Remarks
- during the descent runway 5
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 9 forecast points nearest it (BLH, LAS, BIH, BAM, LKV, RDM, PDX, YKM, SEA). 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 | 190° at 4 kt | −4 kt | 6 °C | 124 kt | 7 h 44 min | 6:39 am PDT (13:39 UTC) |
| 6,500 ft | 190° at 4 kt | −4 kt | 5 °C | 124 kt | 7 h 44 min | 6:39 am PDT (13:39 UTC) |
| 8,500 ft | light and variable | 0 | -1 °C | 120 kt | 8 h | 6:55 am PDT (13:55 UTC) |
| 10,500 ft | 290° at 2 kt | +1 kt | -4 °C | 119 kt | 8 h 04 min | 6:59 am PDT (13:59 UTC) |
| 12,500 ft | 280° at 5 kt | +2 kt | -7 °C | 118 kt | 8 h 08 min | 7:03 am PDT (14:03 UTC) |
| 14,500 ft | 270° at 6 kt | +1 kt | -10 °C | 119 kt | 8 h 04 min | 6:59 am PDT (13:59 UTC) |
| 16,500 ft | 260° at 8 kt | +1 kt | -14 °C | 119 kt | 8 h 04 min | 6:59 am PDT (13:59 UTC) |
| 18,000 ft FL180 | 250° at 9 kt | 0 | -16 °C | 120 kt | 8 h | 6:55 am PDT (13:55 UTC) |
| 24,000 ft FL240 | 290° at 13 kt | +8 kt | -24 °C | 112 kt | 8 h 34 min | 7:29 am PDT (14:29 UTC) |
| 30,000 ft FL300 | 270° at 25 kt | +6 kt | -32 °C | 114 kt | 8 h 25 min | 7:20 am PDT (14:20 UTC) |
| 34,000 ft FL340 | 240° at 31 kt | −3 kt | -36 °C | 123 kt | 7 h 48 min | 6:43 am PDT (13:43 UTC) |
| 39,000 ft FL390 | 230° at 36 kt | −11 kt | -42 °C | 131 kt | 7 h 19 min | 6:14 am PDT (13:14 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| BLH | used from 0 nm out; 34 nm from the line | 210/13 | 200/21 11° | 200/22 5° | 210/25 -1° | 210/51 -10° | 220/61 -20° | 220/81 -29° | 220/92 -34° | 220/79 -45° |
| LAS | used from 150 nm out; 51 nm from the line | 210/21 10° | 200/18 5° | 200/23 -2° | 210/49 -14° | 210/63 -21° | 220/58 -30° | 220/61 -35° | 210/56 -44° | |
| BIH | used from 300 nm out; 75 nm from the line | L/V | 240/7 1° | 190/13 -3° | 200/26 -16° | 210/43 -26° | 220/54 -28° | 220/51 -35° | 220/47 -43° | |
| BAM | used from 400 nm out; 85 nm from the line | 310/7 0° | 270/19 -7° | 200/38 -17° | 190/49 -28° | 220/69 -29° | 220/63 -33° | 230/48 -41° | ||
| LKV | used from 550 nm out; 78 nm from the line | 010/8 -8° | 350/13 -11° | 340/21 -21° | 360/60 -26° | 350/37 -32° | 310/26 -35° | 260/25 -39° | ||
| RDM | used from 699 nm out; 50 nm from the line | 040/17 -1° | 030/31 -8° | 010/29 -12° | 010/61 -19° | 360/95 -25° | 360/82 -36° | 360/40 -37° | 310/19 -40° | |
| PDX | used from 799 nm out; 68 nm from the line | L/V | 030/7 1° | 020/12 -6° | 020/29 -9° | 010/69 -16° | 010/81 -25° | 360/83 -40° | 360/67 -46° | 320/29 -42° |
| YKM | used from 849 nm out; 43 nm from the line | 070/10 | 040/15 -1° | 020/27 -8° | 030/25 -13° | 020/48 -20° | 010/83 -27° | 010/77 -37° | 010/49 -40° | 350/14 -41° |
| SEA | used from 899 nm out; 31 nm from the line | 050/7 | 050/11 1° | 050/12 -5° | 030/31 -7° | 010/61 -15° | 010/69 -26° | 360/73 -40° | 360/62 -47° | 330/21 -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 |
|---|---|---|---|---|---|---|---|
| NYL Yuma, AZ | departure | VFR | from the north-northwest (330°) at 6 knots | 10+ mi | none | 213 ft | 9:57 pm MST (04:57 UTC) |
| BLH Blythe, CA | 60 nm out, 14 nm east of the line | VFR Sky: a broken layer at 11,000 feet | from the south (170°) at 10 knots | 10+ mi | 11,000 ft | 399 ft | 04:52 UTC |
| BTY Beatty, NV | 270 nm out, 16 nm west of the line | no report just now | 3,169 ft | ||||
| TPH Tonopah, NV | 350 nm out, 5 nm southwest of the line | VFR Sky: a few clouds at 1,800 feet, a broken layer at 3,300 feet, overcast at 4,700 feet Weather: nearby thunderstorms | from the north (360°) at 15 knots, gusting to 20 | 10+ mi | 3,300 ft | 5,430 ft | 05:41 UTC |
| TMT Austin, NV | 430 nm out, 21 nm east of the line | VFR Sky: scattered clouds at 6,500 feet, a broken layer at 8,000 feet, overcast at 11,000 feet | calm | 10+ mi | 8,000 ft | 5,735 ft | 05:35 UTC |
| DLS The Dalles, OR | 839 nm out, 5 nm south of the line | VFR Sky: a broken layer at 10,000 feet | calm | 10+ mi | 10,000 ft | 246 ft | 04:53 UTC |
| PLU Puyallup, WA | 939 nm out, 11 nm southwest of the line | VFR Weather: light drizzle | calm | 10+ mi | none | 537 ft | 05:35 UTC |
| BFI Seattle, WA | destination | VFR | calm | 10+ mi | none | 21 ft | 9:53 pm PDT (04:53 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 BFI when you get there the forecast at the estimated arrival, 6:14 am PDT (13:14 UTC)
Wind calm, visibility more than 6 miles, patches of fog, clear skies VFR
The whole forecast for BFI
- From Sun 11:00 pm PDT (06:00 UTC): wind calm, visibility more than 6 miles, clear skies
- From Mon 3:00 am PDT (10:00 UTC): wind calm, visibility more than 6 miles, patches of fog, clear skies
- From Mon 9:00 am PDT (16:00 UTC): wind from the south-southeast at 3 knots, visibility more than 6 miles, clear skies
- From Mon 12:00 pm PDT (19:00 UTC): wind from the west-southwest at 3 knots, visibility more than 6 miles, clear skies
- From Mon 2:00 pm PDT (21:00 UTC): wind from the west at 5 knots, visibility more than 6 miles, clear skies
- From Mon 7:00 pm PDT (02:00 UTC): wind calm, visibility more than 6 miles, clear skies
The forecast for NYL, the departure
- From Sun 5:00 pm MST (00:00 UTC): wind from the northwest at 7 knots, a broken layer at 8,000 feet
- From Sun 6:00 pm MST (01:00 UTC): wind from the west-southwest at 8 knots, gusting to 20, a few clouds at 4,000 feet, scattered clouds at 8,000 feet and more above
- At times between Sun 9:00 pm MST (04:00 UTC) and 12:00 am MST (07:00 UTC): light rain showers
- From Mon 12:00 am MST (07:00 UTC): wind from the north-northwest at 8 knots, a few clouds at 3,000 feet, scattered clouds at 5,000 feet and more above
- 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
Temporary flight restrictions on the line or within 25 nm of it
- 6/2656 Coyote Wells, CA, Saturday, July 4, 2026 through Saturday, January 2, 2027 Local 8 nm from the route, at the departure 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 departure end · security · until 2 January · ZLA
- 6/8891 Bullhead City, AZ, Wednesday, October 14, 2026 Local 22 nm from the route, 140 nm along the route · a VIP movement · starts Wednesday 14 October · ZLA
- 6/8890 LAS VEGAS, NV, Tuesday, October 13, 2026 Local 13 nm from the route, 200 nm along the route · a VIP movement · starts tomorrow · ZLA
Daylight
Sunset at NYL 6:09 pm MST (01:09 UTC), at BFI 6:27 pm PDT (01:27 UTC) (civil twilight ends 6:58 pm PDT (01:58 UTC)). At 120 knots the arrival at BFI is before sunrise there (7:23 am PDT (14:23 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: Yuma Mcas/Yuma International, Boeing Fld/King County International.