Valley International to Seattle-Tacoma International HRL → SEA
1,725 nautical miles (1,985 statute miles) northwest on a straight line, true course 324°, about 321° magnetic at the departure end (variation 3E). At 120 knots that is 13 h 29 min at the quickest height in today's winds (8,500 ft, a 8-knot tailwind), arriving about 7:29 am PDT (14:29 UTC). 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
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 608 to 1167 nm out.
- AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft. Over the route from 638 to 708 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 788 to 1426 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 808 to 1556 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 858 to 1137 nm out.
- AIRMET TANGO 3W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 927 to 937 nm out.
- AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 967 to 1376 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). Near the route, 1346 nm along the route.
- AIRMET ZULU 2C: moderate icing up to 14,000 ft. Over the route from 1456 to 1615 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 HRL.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
Not fetched just now.
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 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 14 forecast points nearest it (BRO, LRD, DRT, INK, ROW, ABQ, FMN, GJT, SLC, PIH, BOI, LWS, 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 | 160° at 7 kt | −7 kt | 11 °C | 127 kt | 13 h 35 min | 7:35 am PDT (14:35 UTC) |
| 6,500 ft | 170° at 7 kt | −7 kt | 9 °C | 127 kt | 13 h 35 min | 7:35 am PDT (14:35 UTC) |
| 8,500 ft | 200° at 14 kt | −8 kt | 8 °C | 128 kt | 13 h 29 min | 7:29 am PDT (14:29 UTC) |
| 10,500 ft | 210° at 17 kt | −7 kt | 4 °C | 127 kt | 13 h 35 min | 7:35 am PDT (14:35 UTC) |
| 12,500 ft | 210° at 20 kt | −6 kt | 0 °C | 126 kt | 13 h 41 min | 7:41 am PDT (14:41 UTC) |
| 14,500 ft | 210° at 23 kt | −6 kt | -4 °C | 126 kt | 13 h 41 min | 7:41 am PDT (14:41 UTC) |
| 16,500 ft | 210° at 26 kt | −7 kt | -8 °C | 127 kt | 13 h 35 min | 7:35 am PDT (14:35 UTC) |
| 18,000 ft FL180 | 220° at 28 kt | −7 kt | -11 °C | 127 kt | 13 h 35 min | 7:35 am PDT (14:35 UTC) |
| 24,000 ft FL240 | 220° at 33 kt | −4 kt | -20 °C | 124 kt | 13 h 55 min | 7:55 am PDT (14:55 UTC) |
| 30,000 ft FL300 | 230° at 39 kt | −2 kt | -30 °C | 122 kt | 14 h 08 min | 8:08 am PDT (15:08 UTC) |
| 34,000 ft FL340 | 230° at 43 kt | +5 kt | -37 °C | 115 kt | 15 h | 9:00 am PDT (16:00 UTC) |
| 39,000 ft FL390 | 250° at 42 kt | +13 kt | -46 °C | 107 kt | 16 h 07 min | 10:07 am PDT (17:07 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| BRO | used from 0 nm out; 48 nm from the line | 130/16 | 160/16 17° | 160/14 13° | 150/12 8° | L/V -3° | 250/13 -14° | 130/15 -29° | 100/18 -39° | L/V -50° |
| LRD | used from 50 nm out; 56 nm from the line | 130/21 | 150/19 16° | 170/21 12° | 170/12 8° | 230/20 -4° | 200/16 -13° | L/V -28° | L/V -39° | 330/16 -51° |
| DRT | used from 199 nm out; 41 nm from the line | 150/25 | 150/27 16° | 170/19 12° | 200/12 7° | 230/23 -4° | 230/27 -12° | 240/24 -28° | 290/20 -38° | 300/28 -51° |
| INK | used from 349 nm out; 74 nm from the line | 160/27 20° | 190/18 13° | 240/19 7° | 250/23 -4° | 250/33 -15° | 230/45 -28° | 250/45 -39° | 270/49 -50° | |
| ROW | used from 499 nm out; 40 nm from the line | 180/23 | 190/24 15° | 210/27 7° | 230/35 -6° | 240/53 -17° | 240/62 -27° | 250/64 -38° | 260/60 -50° | |
| ABQ | used from 648 nm out; 46 nm from the line | 200/28 13° | 210/28 5° | 210/44 -7° | 230/46 -20° | 230/80 -28° | 240/74 -35° | 240/58 -47° | ||
| FMN | used from 748 nm out; 64 nm from the line | 220/25 13° | 220/28 4° | 210/51 -9° | 220/59 -21° | 230/78 -30° | 230/77 -36° | 230/66 -46° | ||
| GJT | used from 897 nm out; 60 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° | ||
| SLC | used from 1047 nm out; 56 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° | |
| PIH | used from 1197 nm out; 78 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° | |
| BOI | used from 1296 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° | |
| LWS | used from 1496 nm out; 93 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° |
| YKM | used from 1546 nm out; 65 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° |
| SEA | used from 1695 nm out; 15 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° |
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 |
|---|---|---|---|---|---|---|---|
| HRL Harlingen, TX | departure | no report just now | 36 ft | ||||
| HBV Hebbronville, TX | 90 nm out, 7 nm southwest of the line | no report just now | 662 ft | ||||
| CZT Carrizo Springs, TX | 179 nm out, 11 nm southwest of the line | no report just now | 598 ft | ||||
| HOB Hobbs, NM | 489 nm out, 5 nm east of the line, tower | no report just now | 3,660 ft | ||||
| ROW Roswell, NM | 558 nm out, 25 nm southwest of the line, tower | no report just now | 3,671 ft | ||||
| SAF Santa Fe, NM | 708 nm out, 6 nm north of the line, tower | no report just now | 6,348 ft | ||||
| CNY Moab, UT | 967 nm out, 2 nm west of the line | no report just now | 4,579 ft | ||||
| SLC Salt Lake City, UT | 1127 nm out, 7 nm northeast of the line, tower | no report just now | 4,230 ft | ||||
| TWF Twin Falls, ID | 1276 nm out, 3 nm west of the line, tower | no report just now | 4,153 ft | ||||
| PDT Pendleton, OR | 1546 nm out, 12 nm northeast of the line, tower | no report just now | 1,494 ft | ||||
| YKM Yakima, WA | 1635 nm out, 5 nm northeast of the line, tower | no report just now | 1,098 ft | ||||
| SEA Seattle, WA | destination | no report just now | 432 ft |
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 SEA when you get there the forecast at the estimated arrival, 7:29 am PDT (14:29 UTC)
SEA 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 HRL 7:05 pm CDT (00:05 UTC), at SEA 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: Valley International, Seattle-Tacoma International.