Boeing Fld/King County International to Rifle Garfield County BFI → RIL
794 nautical miles (913 statute miles) southeast on a straight line, true course 122°, about 107° magnetic at the departure end (variation 15E). At 120 knots that is 5 h 53 min at the quickest height in today's winds (39,000 ft, a 15-knot tailwind), arriving about 12:39 am MDT (06:39 UTC), after sunset at the destination. 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: 4 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 W71W: thunderstorms (a convective SIGMET) up to 27,000 ft, moving from the south at 40 knots, until 6:55 pm PDT (01:55 UTC). Over the route from 486 to 595 nm out.
as issued
WSUS33 KKCI 112355 MKCW WST 112355 CONVECTIVE SIGMET 71W VALID UNTIL 0155Z WY UT ID FROM 40S DBS-40WNW BPI-30WSW MTU-30SSW DTA-30SE TWF-40S DBS AREA EMBD TS MOV FROM 20040KT. TOPS TO FL270.
- SIGMET W68W: thunderstorms (a convective SIGMET) up to 36,000 ft, moving from the southwest at 40 knots, until 6:55 pm PDT (01:55 UTC). Over the last 60 nm of the route.
as issued
WSUS33 KKCI 112355 MKCW WST 112355 CONVECTIVE SIGMET 68W VALID UNTIL 0155Z CO NM AZ UT FROM 30W CHE-20NNW TBE-60SE ABQ-40N SJN-30SW MTU-30W CHE AREA TS MOV FROM 23040KT. TOPS TO FL360.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 25,000 ft to 39,000 ft. Over the first 0 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 14,000 ft. Over the route from 119 to 298 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 625 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the last 526 nm of 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 367 to 556 nm out.
- AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 367 to 685 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 268 nm of the route.
- 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 last 248 nm of the route.
- AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 724 to 764 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
- A339 at 16,000 ft, 43 nm southwest, 4:35 pm PDT (23:35 UTC): moderate chop turbulence up to 16,000 ft, remarks: during the climb zlc. 585 nm along the route, 43 nm southwest of the line.
as filed, and in English
OGD UA /OV OGD063012/TM 2335/FL160/TP A339/TB MOD CHOP 160 BLO/RM DURC /ZLC
- Report
- a routine report filed through OGD
- Where
- 12 nm northeast (063°) of OGD
- Time
- 23:35 UTC
- Height
- at 16,000 ft
- Aircraft
- A339
- Turbulence
- moderate chop at 16,000 ft below
- Remarks
- during the climb zlc
- E75L at 14,500 ft, 49 nm southwest, 4:05 pm PDT (23:05 UTC): moderate turbulence up to 15,800 ft, heavy rain, remarks: during the climb zlc. 585 nm along the route, 49 nm southwest of the line.
as filed, and in English
OGD UA /OV OGD086008/TM 2305/FL145/TP E75L/WX +RA/TB MOD 158 BLO/RM DURC /ZLC
- Report
- a routine report filed through OGD
- Where
- 8 nm east (086°) of OGD
- Time
- 23:05 UTC
- Height
- at 14,500 ft
- Aircraft
- E75L
- Weather
- heavy rain
- Turbulence
- moderate at 15,800 ft below
- Remarks
- during the climb zlc
- C650 at 40,000 ft, 39 nm east, 4:48 pm PDT (23:48 UTC): moderate turbulence, remarks: ZDVWC-03. At the destination end, 39 nm east of the line.
as filed, and in English
ASE UA /OV DBL/TM 2348/FL400/TP C650/TB MOD /RM ZDVWC-03
- Report
- a routine report filed through ASE
- Where
- over DBL
- Time
- 23:48 UTC
- Height
- at 40,000 ft
- Aircraft
- C650
- Turbulence
- moderate
- Remarks
- ZDVWC-03
- E170 at 10,000 ft, 46 nm southwest, 4:41 pm PDT (23:41 UTC): moderate turbulence up to 10,000 ft, remarks: during the climb. At the destination end, 46 nm southwest of the line.
as filed, and in English
GJT UA /OV GJT144009/TM 2341/FL100/TP E170/TB MOD SFC-100/RM DURC
- Report
- a routine report filed through GJT
- Where
- 9 nm southeast (144°) of GJT
- Time
- 23:41 UTC
- Height
- at 10,000 ft
- Aircraft
- E170
- Turbulence
- moderate from the surface to 10,000 ft
- Remarks
- during the climb
- C680A at 16,000 ft, 44 nm southeast, 3:59 pm PDT (22:59 UTC): moderate turbulence, scattered clouds above 16,000 ft, remarks: during the descent. At the destination end, 44 nm southeast of the line.
as filed, and in English
ASE UA /OV HAERI/TM 2259/FL160/TP C680A/SK SCT160/TB CONS MOD/RM DURD
- Report
- a routine report filed through ASE
- Where
- haeri
- Time
- 22:59 UTC
- Height
- at 16,000 ft
- Aircraft
- C680A
- Sky
- scattered clouds from 16,000 ft
- Turbulence
- continuous moderate
- Remarks
- during the descent
- C680 at 18,000 ft, 37 nm southeast, 3:35 pm PDT (22:35 UTC): moderate turbulence, remarks: from 18,000 ft to 10,000 ft. At the destination end, 37 nm southeast of the line.
as filed, and in English
ASE UA /OV ASE230020/TM 2235/FL180/TP C680/TB MOD/RM 180-100
- Report
- a routine report filed through ASE
- Where
- 20 nm southwest (230°) of ASE
- Time
- 22:35 UTC
- Height
- at 18,000 ft
- Aircraft
- C680
- Turbulence
- moderate
- Remarks
- from 18,000 ft to 10,000 ft
- C700 at 16,000 ft, 49 nm east, 2:55 pm PDT (21:55 UTC): moderate turbulence. At the destination end, 49 nm east of the line.
as filed, and in English
ASE UA /OV WERNR/TM 2155/FL160/TP C700/TB MOD
- Report
- a routine report filed through ASE
- Where
- wernr
- Time
- 21:55 UTC
- Height
- at 16,000 ft
- Aircraft
- C700
- Turbulence
- moderate
- E550 at 21,000 ft, 6 nm southwest, 4:27 pm PDT (23:27 UTC): light turbulence, a few clouds above 7,000 ft, remarks: during the climb zlc. 417 nm along the route, 6 nm southwest of the line.
as filed, and in English
SUN UA /OV SUN/TM 2327/FL210/TP E550/SK FEW070/TB CONS LGT/RM DURC /ZLC
- Report
- a routine report filed through SUN
- Where
- over SUN
- Time
- 23:27 UTC
- Height
- at 21,000 ft
- Aircraft
- E550
- Sky
- a few clouds from 7,000 ft
- Turbulence
- continuous light
- Remarks
- during the climb zlc
- C68A at 31,000 ft, 20 nm northeast, 2:49 pm PDT (21:49 UTC): a routine report with nothing remarked on. 446 nm along the route, 20 nm northeast of the line.
as filed, and in English
SUN UA /OV HLE060040/TM 2149/FL310/TP C68A/SK BASE074-TOP300 /ZLC
- Report
- a routine report filed through SUN
- Where
- 40 nm northeast (060°) of HLE
- Time
- 21:49 UTC
- Height
- at 31,000 ft
- Aircraft
- C68A
- Sky
- BASE074-TOP300; zlc
- C337 at 10,000 ft, 17 nm southwest, 3:04 pm PDT (22:04 UTC): light rime icing, -1 °C. 526 nm along the route, 17 nm southwest of the line.
as filed, and in English
LGU UA /OV MLD 35NW/TM 2204/FL100/TP C337/TA M01/IC LGT RIME /ZLC
- Report
- a routine report filed through LGU
- Where
- mld 35NW
- Time
- 22:04 UTC
- Height
- at 10,000 ft
- Aircraft
- C337
- Temperature
- −1 °C
- Icing
- light rime zlc
- UAL796 at 30,000 ft, 18 nm northeast, 5:09 pm PDT (00:09 UTC): light chop turbulence, wind 230° at 42 knots. At the destination end, 18 nm northeast of the line.
as filed, and in English
ARP UAL796 4004N 10755W 0009 F300 230/042KT TB OCNL LGT CHOP IC
- Report
- a routine report filed through ARP
- B39M at 31,000 ft, 18 nm northeast, 3:44 pm PDT (22:44 UTC): remarks: mountain wave a 15-knot loss of airspeed zdvwc. At the destination end, 18 nm northeast of the line.
as filed, and in English
EEO UA /OV EKR/TM 2244/FL310/TP B39M/RM MTN WAVE +/-15KTS ZDVWC
- Report
- a routine report filed through EEO
- Where
- over EKR
- Time
- 22:44 UTC
- Height
- at 31,000 ft
- Aircraft
- B39M
- Remarks
- mountain wave a 15-knot loss of airspeed zdvwc
- UAL1791 at 31,000 ft, 9 nm northeast, 3:40 pm PDT (22:40 UTC): light turbulence, -34 °C, wind 224° at 52 knots. At the destination end, 9 nm northeast of the line.
as filed, and in English
ARP UAL1791 3959N 10807W 2240 F310 MS34 224/052KT TB LIGHT SK CLEAR IC NONE
- Report
- a routine report filed through ARP
- B38M at 32,000 ft, 9 nm northeast, 4:32 pm PDT (23:32 UTC): light turbulence, no icing, remarks: ZDVWC-04. At the destination end, 9 nm northeast of the line.
as filed, and in English
EEO UA /OV EKR146023/TM 2332/FL320/TP B38M/TB CONS LGT /IC NEG/RM ZDVWC-04
- Report
- a routine report filed through EEO
- Where
- 23 nm southeast (146°) of EKR
- Time
- 23:32 UTC
- Height
- at 32,000 ft
- Aircraft
- B38M
- Turbulence
- continuous light
- Icing
- none
- Remarks
- ZDVWC-04
4 more routine reports are on the map.
Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 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, LWS, BOI, PIH, SLC, RKS, GJT). 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 | 350° at 8 kt | −5 kt | 4 °C | 125 kt | 6 h 21 min | 1:07 am MDT (07:07 UTC) |
| 7,500 ft | 210° at 6 kt | +2 kt | -1 °C | 118 kt | 6 h 44 min | 1:30 am MDT (07:30 UTC) |
| 9,500 ft | 210° at 10 kt | +3 kt | -3 °C | 117 kt | 6 h 47 min | 1:33 am MDT (07:33 UTC) |
| 11,500 ft | 210° at 18 kt | +4 kt | -6 °C | 116 kt | 6 h 51 min | 1:37 am MDT (07:37 UTC) |
| 13,500 ft | 210° at 23 kt | +5 kt | -7 °C | 115 kt | 6 h 54 min | 1:40 am MDT (07:40 UTC) |
| 15,500 ft | 210° at 26 kt | +7 kt | -11 °C | 113 kt | 7 h 02 min | 1:48 am MDT (07:48 UTC) |
| 17,500 ft | 200° at 29 kt | +8 kt | -15 °C | 112 kt | 7 h 05 min | 1:51 am MDT (07:51 UTC) |
| 18,000 ft FL180 | 200° at 29 kt | +8 kt | -16 °C | 112 kt | 7 h 05 min | 1:51 am MDT (07:51 UTC) |
| 24,000 ft FL240 | 210° at 31 kt | +6 kt | -25 °C | 114 kt | 6 h 58 min | 1:44 am MDT (07:44 UTC) |
| 30,000 ft FL300 | 210° at 35 kt | +5 kt | -34 °C | 115 kt | 6 h 54 min | 1:40 am MDT (07:40 UTC) |
| 34,000 ft FL340 | 230° at 44 kt | −6 kt | -37 °C | 126 kt | 6 h 18 min | 1:04 am MDT (07:04 UTC) |
| 39,000 ft FL390 | 240° at 49 kt | −15 kt | -43 °C | 135 kt | 5 h 53 min | 12:39 am MDT (06:39 UTC) |
Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 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; 23 nm from the line | 360/9 | 350/10 1° | 010/10 -5° | 030/20 -11° | 020/60 -17° | 010/86 -26° | 360/90 -40° | 010/68 -42° | 360/31 -43° |
| YKM | used from 50 nm out; 20 nm from the line | 030/16 | 020/18 0° | 030/30 -8° | 030/23 -13° | 020/40 -23° | 010/73 -29° | 010/54 -36° | 360/29 -37° | 330/16 -40° |
| LWS | used from 149 nm out; 78 nm from the line | 010/5 | 050/14 -2° | 040/12 -6° | 160/7 -10° | 190/30 -22° | 200/54 -27° | 200/48 -35° | 210/40 -37° | 230/32 -41° |
| BOI | used from 298 nm out; 58 nm from the line | 330/14 4° | 230/5 -2° | 220/20 -7° | 210/37 -20° | 200/59 -26° | 200/67 -34° | 210/73 -35° | 220/62 -41° | |
| PIH | used from 397 nm out; 74 nm from the line | 270/10 | 270/13 1° | 210/16 -2° | 200/56 -11° | 200/51 -23° | 200/68 -33° | 220/77 -37° | 230/73 -44° | |
| SLC | used from 546 nm out; 74 nm from the line | 280/8 | 210/39 5° | 210/52 -1° | 200/50 -11° | 200/56 -23° | 220/61 -28° | 230/73 -37° | 230/73 -45° | |
| RKS | used from 595 nm out; 70 nm from the line | 190/43 | 210/65 3° | 210/57 -9° | 210/56 -21° | 210/47 -33° | 230/63 -37° | 240/77 -46° | ||
| GJT | used from 744 nm out; 45 nm from the line | 210/40 11° | 210/46 3° | 210/61 -10° | 210/68 -22° | 220/57 -29° | 230/59 -36° | 240/66 -46° |
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 | no report just now | 21 ft | ||||
| ESW Easton, WA | 50 nm out, 11 nm north of the line | no report just now | 2,226 ft | ||||
| PSC Pasco, WA | 149 nm out, 8 nm northeast of the line, tower | no report just now | 410 ft | ||||
| PDT Pendleton, OR | 179 nm out, 14 nm southwest of the line, tower | no report just now | 1,494 ft | ||||
| JSY Joseph, OR | 248 nm out, 8 nm north of the line | no report just now | 4,126 ft | ||||
| SUN Hailey, ID | 417 nm out, 6 nm southwest of the line, tower | no report just now | 5,319 ft | ||||
| PIH Pocatello, ID | 496 nm out, 12 nm northeast of the line, tower | no report just now | 4,451 ft | ||||
| FBR Fort Bridger, WY | 625 nm out, 5 nm east of the line | no report just now | 7,038 ft | ||||
| VEL Vernal, UT | 694 nm out, 13 nm southwest of the line | no report just now | 5,274 ft | ||||
| EEO Meeker, CO | 764 nm out, 19 nm northeast of the line | no report just now | 6,415 ft | ||||
| RIL Rifle, CO | destination | no report just now | 5,536 ft |
The highest airport on this list sits at 7,038 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At RIL when you get there the forecast at the estimated arrival, 12:39 am MDT (06:39 UTC)
RIL has no terminal forecast; use the nearest airport that does.
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 BFI 6:27 pm PDT (01:27 UTC), at RIL 6:36 pm MDT (00:36 UTC) (civil twilight ends 7:03 pm MDT (01:03 UTC)). At 120 knots the arrival at RIL is before sunrise there (7:17 am MDT (13:17 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, Rifle Garfield County.