Topeka Regional to Boeing Fld/King County International FOE → BFI
1,266 nautical miles (1,457 statute miles) northwest on a straight line, true course 303°, about 298° magnetic at the departure end (variation 5E). At 120 knots that is 10 h 13 min at the quickest height in today's winds (4,500 ft, a 4-knot tailwind), arriving about 8:32 am PDT (15:32 UTC). Right now FOE is VFR, wind from the south (190°) at 12 knots, gusting to 22; 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
- SIGMET 8C: thunderstorms (a convective SIGMET) up to 32,000 ft, moving from the southwest at 40 knots, until 1:55 am CDT (06:55 UTC). Over the route from 458 to 478 nm out.
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 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 first 379 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the route from 379 to 668 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 448 to 688 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 468 to 648 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 528 to 777 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 568 to 1056 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 578 to 957 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 787 to 1146 nm out.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 817 to 997 nm out.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 179 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 FOE.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- UAL1076 at 30,000 ft, 8 nm northeast, 9:36 pm CDT (02:36 UTC): light turbulence, wind 225° at 60 knots. 628 nm along the route, 8 nm northeast of the line.
as filed, and in English
ARP UAL1076 4405N 10749W 0236 F300 225/060KT TB CONT LGT TURB IC
- Report
- a routine report filed through ARP
- GLF5 descending, 45 nm north, 10:46 pm CDT (03:46 UTC): remarks: broke out 100-150FT above ground. 797 nm along the route, 45 nm north of the line.
as filed, and in English
BZN UA /OV BZN/TM 0346/FLDURD/TP GLF5/RM BROKE OUT 100-150FT AGL
- Report
- a routine report filed through BZN
- Where
- over BZN
- Time
- 03:46 UTC
- Height
- during the descent
- Aircraft
- GLF5
- Remarks
- broke out 100-150FT above ground
- E75L at 1,500 ft, 40 nm south, 11:49 pm CDT (04:49 UTC): remarks: low-level wind shear loss of 8 knots on final. 1116 nm along the route, 40 nm south of the line.
as filed, and in English
PSC UA /OV PSC120003/TM 0449/FL015/TP E75L/RM LLWS LOSS OF 8 KTS ON FINAL
- Report
- a routine report filed through PSC
- Where
- 3 nm southeast (120°) of PSC
- Time
- 04:49 UTC
- Height
- at 1,500 ft
- Aircraft
- E75L
- Remarks
- low-level wind shear loss of 8 knots on final
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 11 forecast points nearest it (MKC, SLN, GRI, BFF, LND, BIL, DLN, LWS, GEG, 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 | 200° at 15 kt | −4 kt | 16 °C | 124 kt | 10 h 13 min | 8:32 am PDT (15:32 UTC) |
| 6,500 ft | 200° at 13 kt | −2 kt | 8 °C | 122 kt | 10 h 23 min | 8:42 am PDT (15:42 UTC) |
| 8,500 ft | 210° at 10 kt | 0 | 2 °C | 120 kt | 10 h 33 min | 8:52 am PDT (15:52 UTC) |
| 10,500 ft | 220° at 13 kt | +2 kt | 2 °C | 118 kt | 10 h 44 min | 9:03 am PDT (16:03 UTC) |
| 12,500 ft | 220° at 16 kt | +3 kt | -1 °C | 117 kt | 10 h 49 min | 9:08 am PDT (16:08 UTC) |
| 14,500 ft | 220° at 18 kt | +4 kt | -5 °C | 116 kt | 10 h 55 min | 9:14 am PDT (16:14 UTC) |
| 16,500 ft | 220° at 20 kt | +5 kt | -9 °C | 115 kt | 11 h 01 min | 9:20 am PDT (16:20 UTC) |
| 18,000 ft FL180 | 220° at 22 kt | +6 kt | -13 °C | 114 kt | 11 h 06 min | 9:25 am PDT (16:25 UTC) |
| 24,000 ft FL240 | 220° at 30 kt | +6 kt | -24 °C | 114 kt | 11 h 06 min | 9:25 am PDT (16:25 UTC) |
| 30,000 ft FL300 | 230° at 35 kt | +14 kt | -33 °C | 106 kt | 11 h 57 min | 10:16 am PDT (17:16 UTC) |
| 34,000 ft FL340 | 240° at 43 kt | +22 kt | -37 °C | 98 kt | 12 h 55 min | 11:14 am PDT (18:14 UTC) |
| 39,000 ft FL390 | 240° at 47 kt | +29 kt | -44 °C | 91 kt | 13 h 55 min | 12:14 pm PDT (19:14 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| MKC | used from 0 nm out; 71 nm from the line | 220/44 | 250/28 18° | 250/18 13° | 240/12 6° | 280/24 -6° | 240/34 -18° | 260/47 -30° | 260/51 -40° | 270/58 -50° |
| SLN | used from 50 nm out; 57 nm from the line | 210/53 | 230/41 20° | 240/26 14° | 230/16 8° | 240/25 -7° | 240/35 -19° | 250/61 -30° | 260/65 -38° | 260/56 -49° |
| GRI | used from 100 nm out; 58 nm from the line | 230/35 21° | 230/23 13° | 220/20 7° | 240/25 -8° | 240/37 -20° | 250/49 -33° | 260/57 -38° | 260/58 -47° | |
| BFF | used from 299 nm out; 83 nm from the line | 180/28 | 220/33 15° | 210/31 7° | 230/32 -9° | 220/41 -21° | 220/40 -33° | 240/47 -36° | 250/54 -46° | |
| LND | used from 548 nm out; 97 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° | ||
| BIL | used from 698 nm out; 93 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° | |
| DLN | used from 747 nm out; 68 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° | ||
| LWS | used from 947 nm out; 67 nm from the line | 070/10 | 080/12 -2° | 030/12 -6° | 080/7 -10° | 170/34 -21° | 160/46 -32° | 200/33 -35° | 220/22 -35° | 230/18 -38° |
| GEG | used from 1096 nm out; 71 nm from the line | 080/16 -2° | 050/17 -7° | 080/9 -10° | 190/33 -21° | 180/31 -32° | L/V -35° | L/V -37° | 270/8 -40° | |
| YKM | used from 1146 nm out; 39 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 1196 nm out; 44 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 |
|---|---|---|---|---|---|---|---|
| FOE Topeka, KS | departure | VFR | from the south (190°) at 12 knots, gusting to 22 | 10+ mi | none | 1,077 ft | 11:53 pm CDT (04:53 UTC) |
| MHK Manhattan, KS | 50 nm out, 16 nm south of the line, tower | VFR | from the south-southwest (200°) at 13 knots, gusting to 21 | 10+ mi | none | 1,066 ft | 04:52 UTC |
| LXN Lexington, NE | 219 nm out, 4 nm southwest of the line | VFR | from the south (180°) at 9 knots | 10+ mi | none | 2,412 ft | 04:55 UTC |
| AIA Alliance, NE | 379 nm out, 6 nm south of the line | VFR | from the east (100°) at 5 knots | 10+ mi | none | 3,930 ft | 04:53 UTC |
| LSK Lusk, WY | 458 nm out, 1 nm east of the line | no report just now | 4,966 ft | ||||
| WRL Worland, WY | 628 nm out, 2 nm southwest of the line | low IFR Sky: overcast at 400 feet Weather: mist | from the north-northeast (020°) at 6 knots | 3 mi | 400 ft | 4,251 ft | 04:53 UTC |
| COD Cody, WY | 688 nm out, 11 nm northeast of the line | marginal VFR Sky: a broken layer at 1,200 feet, overcast at 2,000 feet Weather: unknown precipitation | from the north-northeast (030°) at 11 knots, gusting to 16 | 10+ mi | 1,200 ft | 5,102 ft | 04:56 UTC |
| DLN Dillon, MT | 837 nm out, 7 nm southwest of the line | IFR Sky: a few clouds at 400 feet, overcast at 900 feet Weather: light snow, mist | calm | 1 mi | 900 ft | 5,244 ft | 05:11 UTC |
| GIC Grangeville, ID | 997 nm out, 19 nm south of the line | VFR Sky: a broken layer at 3,500 feet, overcast at 4,200 feet | calm | 10+ mi | 3,500 ft | 3,313 ft | 04:55 UTC |
| LWS Lewiston, ID | 1036 nm out, 7 nm southwest of the line, tower | VFR Sky: overcast at 5,500 feet | calm | 10+ mi | 5,500 ft | 1,442 ft | 04:56 UTC |
| MWH Moses Lake, WA | 1146 nm out, 14 nm northeast of the line, tower | VFR Sky: overcast at 9,000 feet | from the northwest (310°) at 4 knots | 10+ mi | 9,000 ft | 1,188 ft | 04:52 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 5,244 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, 8:32 am PDT (15:32 UTC)
Wind calm, visibility more than 6 miles, patches of fog, clear skies VFR
The whole forecast for BFI
- From Sun 8:00 pm PDT (03:00 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
The forecast for FOE, the departure
- From Sun 7:00 pm CDT (00:00 UTC): wind from the south at 11 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
- From Sun 11:00 pm CDT (04:00 UTC): wind from the south at 16 knots, gusting to 29, visibility more than 6 miles, a few clouds at 25,000 feet
Temporary flight restrictions on the line or within 25 nm of it
No temporary flight restriction on or near this route right now.
Daylight
Sunset at FOE 6:48 pm CDT (23:48 UTC), at BFI 6:27 pm PDT (01:27 UTC) (civil twilight ends 6:58 pm PDT (01:58 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: Topeka Regional, Boeing Fld/King County International.