Boeing Fld/King County International to Valley International BFI → HRL
1,728 nautical miles (1,988 statute miles) southeast on a straight line, true course 129°, about 114° magnetic at the departure end (variation 15E). At 120 knots that is 13 h 43 min at the quickest height in today's winds (39,000 ft, a 6-knot tailwind), arriving about 7:41 pm CDT (00:41 UTC), after sunset at the destination. Right now BFI is VFR, wind calm; HRL is VFR, wind from the south-southeast (150°) at 6 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 30 to 330 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 180 to 859 nm out.
- AIRMET ZULU 2C: moderate icing up to 18,000 ft. Near the route, 210 nm along the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 380 to 779 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 419 to 479 nm out.
- AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 599 to 809 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the route from 629 to 1079 nm out.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the route from 829 to 1029 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 15 forecast points nearest it (SEA, YKM, LWS, BOI, PIH, SLC, GJT, FMN, ABQ, ROW, INK, DRT, LRD, CRP, BRO). 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 | 210° at 7 kt | +3 kt | 10 °C | 117 kt | 14 h 46 min | 8:44 pm CDT (01:44 UTC) |
| 7,500 ft | 220° at 11 kt | +3 kt | 7 °C | 117 kt | 14 h 46 min | 8:44 pm CDT (01:44 UTC) |
| 9,500 ft | 220° at 13 kt | +3 kt | 5 °C | 117 kt | 14 h 46 min | 8:44 pm CDT (01:44 UTC) |
| 11,500 ft | 220° at 17 kt | +4 kt | 1 °C | 116 kt | 14 h 54 min | 8:52 pm CDT (01:52 UTC) |
| 13,500 ft | 220° at 21 kt | +4 kt | -3 °C | 116 kt | 14 h 54 min | 8:52 pm CDT (01:52 UTC) |
| 15,500 ft | 220° at 24 kt | +4 kt | -6 °C | 116 kt | 14 h 54 min | 8:52 pm CDT (01:52 UTC) |
| 17,500 ft | 220° at 26 kt | +5 kt | -10 °C | 115 kt | 15 h 02 min | 9:00 pm CDT (02:00 UTC) |
| 18,000 ft FL180 | 220° at 27 kt | +5 kt | -11 °C | 115 kt | 15 h 02 min | 9:00 pm CDT (02:00 UTC) |
| 24,000 ft FL240 | 230° at 33 kt | −1 kt | -21 °C | 121 kt | 14 h 17 min | 8:15 pm CDT (01:15 UTC) |
| 30,000 ft FL300 | 230° at 38 kt | −1 kt | -31 °C | 121 kt | 14 h 17 min | 8:15 pm CDT (01:15 UTC) |
| 34,000 ft FL340 | 240° at 40 kt | −5 kt | -37 °C | 125 kt | 13 h 49 min | 7:47 pm CDT (00:47 UTC) |
| 39,000 ft FL390 | 240° at 36 kt | −6 kt | -46 °C | 126 kt | 13 h 43 min | 7:41 pm CDT (00:41 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; 23 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; 17 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° |
| LWS | used from 200 nm out; 91 nm from the line | L/V | 340/5 -3° | L/V -6° | 040/7 -10° | 100/23 -22° | 180/30 -31° | 190/11 -34° | 200/11 -36° | 220/23 -40° |
| BOI | used from 250 nm out; 75 nm from the line | 320/11 1° | 280/8 -5° | 220/14 -11° | 200/60 -19° | 190/66 -31° | 210/46 -32° | 220/50 -33° | 220/43 -39° | |
| PIH | used from 449 nm out; 74 nm from the line | 070/8 | 150/19 1° | 180/32 -4° | 210/44 -17° | 210/37 -28° | 210/74 -31° | 220/68 -35° | 220/60 -43° | |
| SLC | used from 499 nm out; 76 nm from the line | 200/16 | 210/23 4° | 220/34 -3° | 210/40 -16° | 220/66 -23° | 220/64 -31° | 220/57 -36° | 220/50 -43° | |
| GJT | used from 699 nm out; 78 nm from the line | 220/26 6° | 230/39 0° | 220/55 -13° | 230/60 -23° | 230/78 -31° | 230/80 -35° | 230/74 -44° | ||
| FMN | used from 849 nm out; 39 nm from the line | 220/16 6° | 220/39 1° | 220/50 -10° | 230/67 -23° | 230/94 -29° | 230/102 -35° | 230/90 -46° | ||
| ABQ | used from 949 nm out; 65 nm from the line | 220/19 9° | 220/35 3° | 230/50 -8° | 240/64 -19° | 230/83 -26° | 230/85 -36° | 230/80 -48° | ||
| ROW | used from 1099 nm out; 56 nm from the line | 230/12 | 230/17 13° | 220/30 7° | 230/41 -5° | 240/52 -17° | 230/66 -28° | 240/63 -38° | 240/60 -50° | |
| INK | used from 1248 nm out; 34 nm from the line | 220/17 21° | 230/12 14° | 210/13 7° | 220/29 -5° | 240/41 -14° | 230/43 -28° | 250/41 -38° | 250/33 -51° | |
| DRT | used from 1398 nm out; 56 nm from the line | 160/26 | 180/14 17° | 200/18 15° | 200/20 9° | 210/21 -3° | 220/14 -13° | 210/17 -29° | 280/12 -39° | 320/20 -51° |
| LRD | used from 1548 nm out; 46 nm from the line | 160/22 | 170/23 18° | 190/18 15° | 210/12 10° | 220/17 -4° | 200/11 -15° | 150/13 -29° | 060/8 -40° | 030/28 -51° |
| CRP | used from 1648 nm out; 63 nm from the line | 140/21 | 160/22 17° | 180/14 13° | 210/6 9° | 270/10 -5° | 200/8 -13° | L/V -29° | L/V -40° | 030/28 -51° |
| BRO | used from 1698 nm out; 38 nm from the line | 160/15 | 160/15 18° | 170/11 14° | 150/7 9° | L/V -4° | 170/6 -15° | 100/15 -29° | 100/14 -41° | 040/26 -51° |
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) |
| YKM Yakima, WA | 90 nm out, 3 nm east of the line, tower | VFR Sky: a broken layer at 9,000 feet | calm | 10+ mi | 9,000 ft | 1,098 ft | 10:53 UTC |
| PDT Pendleton, OR | 180 nm out, 8 nm northeast of the line, tower | VFR Sky: a broken layer at 6,000 feet, overcast at 7,500 feet | from the southwest (220°) at 3 knots | 10+ mi | 6,000 ft | 1,494 ft | 10:53 UTC |
| TWF Twin Falls, ID | 449 nm out, 5 nm southwest of the line, tower | marginal VFR Sky: overcast at 2,600 feet | from the southwest (220°) at 8 knots | 10+ mi | 2,600 ft | 4,153 ft | 10:53 UTC |
| SLC Salt Lake City, UT | 599 nm out, 4 nm northeast of the line, tower | VFR Sky: a few clouds at 4,000 feet, scattered clouds at 7,500 feet, a broken layer at 10,000 feet, a broken layer at 13,000 feet | from the south-southeast (150°) at 13 knots, gusting to 20 | 10+ mi | 10,000 ft | 4,230 ft | 10:54 UTC |
| CNY Moab, UT | 759 nm out, 4 nm southwest of the line | VFR Sky: a few clouds at 8,500 feet, a broken layer at 12,000 feet | from the east-southeast (110°) at 6 knots | 10+ mi | 12,000 ft | 4,579 ft | 10:53 UTC |
| SAF Santa Fe, NM | 1019 nm out, 4 nm north of the line, tower | VFR Sky: scattered clouds at 5,500 feet | calm | 10+ mi | none | 6,348 ft | 10:53 UTC |
| HOB Hobbs, NM | 1238 nm out, 5 nm southeast of the line, tower | VFR | from the west-southwest (250°) at 5 knots | 10+ mi | none | 3,660 ft | 10:55 UTC |
| OZA Ozona, TX | 1398 nm out, 11 nm northeast of the line | marginal VFR Sky: scattered clouds at 1,600 feet, overcast at 2,700 feet | from the south (180°) at 9 knots, gusting to 15 | 10+ mi | 2,700 ft | 2,376 ft | 10:35 UTC |
| HBV Hebbronville, TX | 1638 nm out, 7 nm southwest of the line | VFR | calm | 10+ mi | none | 662 ft | 07:35 UTC |
| HRL Harlingen, TX | destination | VFR | from the south-southeast (150°) at 6 knots | 10+ mi | none | 36 ft | 5:52 am CDT (10:52 UTC) |
The highest airport on this list sits at 6,348 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At HRL when you get there the forecast at the estimated arrival, 7:41 pm CDT (00:41 UTC)
Wind from the south-southeast at 12 knots, gusting to 20, visibility more than 6 miles, scattered clouds at 7,000 feet VFR
The whole forecast for HRL
- From Mon 1:00 am CDT (06:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 2,500 feet
- From Mon 9:00 am CDT (14:00 UTC): wind from the south-southeast at 7 knots, visibility more than 6 miles, a few clouds at 25,000 feet
- From Mon 1:00 pm CDT (18:00 UTC): wind from the south-southeast at 12 knots, gusting to 20, visibility more than 6 miles, scattered clouds at 7,000 feet
- From Mon 9:00 pm CDT (02:00 UTC): wind from the southeast at 9 knots, visibility more than 6 miles, a few clouds at 7,000 feet
The forecast for BFI, the departure
- From Mon 2:00 am PDT (09:00 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 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
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 6:25 pm PDT (01:25 UTC), at HRL 7:04 pm CDT (00:04 UTC) (civil twilight ends 7:28 pm CDT (00:28 UTC)). At 120 knots the arrival at HRL is after sunset there (7:05 pm CDT (00:05 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, Valley International.