Monterey Regional to Seattle-Tacoma International MRY → SEA
653 nautical miles (751 statute miles) north on a straight line, true course 358°, about 343° magnetic at the departure end (variation 15E). At 120 knots that is 5 h 44 min at the quickest height in today's winds (4,500 ft, a 6-knot headwind), arriving about 7:05 am PDT (14:05 UTC), after sunset at the destination. Right now MRY is VFR, wind from the east (090°) at 7 knots; SEA is VFR, wind from the west (270°) at 3 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: 660 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 first 564 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 MRY.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- E75L at 10,000 ft, 10 nm west, 10:40 pm PDT (05:40 UTC): light to moderate chop turbulence, remarks: during the descent rnav-z runway 32 100-60. 336 nm along the route, 10 nm west of the line.
as filed, and in English
MFR UA /OV ACLOB/TM 0540/FL100/TP E75L/TB LGT-MOD CHOP/RM DURD RNAV-Z RWY32 100-60
- Report
- a routine report filed through MFR
- Where
- aclob
- Time
- 05:40 UTC
- Height
- at 10,000 ft
- Aircraft
- E75L
- Turbulence
- light to moderate chop
- Remarks
- during the descent rnav-z runway 32 100-60
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 7 forecast points nearest it (SFO, SAC, RBL, SIY, RDM, PDX, 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 | 050° at 10 kt | +6 kt | 0 °C | 114 kt | 5 h 44 min | 7:05 am PDT (14:05 UTC) |
| 6,500 ft | 040° at 11 kt | +8 kt | 1 °C | 112 kt | 5 h 50 min | 7:11 am PDT (14:11 UTC) |
| 8,500 ft | 030° at 13 kt | +11 kt | -3 °C | 109 kt | 5 h 59 min | 7:20 am PDT (14:20 UTC) |
| 10,500 ft | 010° at 18 kt | +17 kt | -6 °C | 103 kt | 6 h 20 min | 7:41 am PDT (14:41 UTC) |
| 12,500 ft | 010° at 25 kt | +25 kt | -9 °C | 95 kt | 6 h 52 min | 8:13 am PDT (15:13 UTC) |
| 14,500 ft | 360° at 37 kt | +37 kt | -11 °C | 83 kt | 7 h 52 min | 9:13 am PDT (16:13 UTC) |
| 16,500 ft | 360° at 49 kt | +49 kt | -13 °C | 71 kt | 9 h 12 min | 10:33 am PDT (17:33 UTC) |
| 18,000 ft FL180 | 360° at 58 kt | +58 kt | -15 °C | 62 kt | 10 h 32 min | 11:53 am PDT (18:53 UTC) |
| 24,000 ft FL240 | 360° at 80 kt | +80 kt | -24 °C | 40 kt | 16 h 20 min | 5:41 pm PDT (00:41 UTC) |
| 30,000 ft FL300 | 360° at 69 kt | +69 kt | -36 °C | 51 kt | 12 h 48 min | 2:09 pm PDT (21:09 UTC) |
| 34,000 ft FL340 | 350° at 37 kt | +36 kt | -40 °C | 84 kt | 7 h 46 min | 9:07 am PDT (16:07 UTC) |
| 39,000 ft FL390 | 290° at 18 kt | +6 kt | -42 °C | 114 kt | 5 h 44 min | 7:05 am PDT (14:05 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| SFO | used from 0 nm out; 45 nm from the line | 120/13 | 090/14 5° | 040/14 -1° | 350/17 -5° | 360/42 -14° | 360/64 -23° | 350/38 -32° | 300/19 -37° | 250/18 -44° |
| SAC | used from 99 nm out; 22 nm from the line | 110/6 | L/V 4° | 010/11 -2° | 350/11 -7° | 340/24 -16° | 360/44 -23° | 330/24 -30° | 270/21 -35° | 230/23 -43° |
| RBL | used from 148 nm out; 43 nm from the line | 020/16 | 360/6 5° | L/V -2° | 340/10 -8° | 360/59 -15° | 360/87 -23° | 360/68 -35° | 330/28 -37° | 260/26 -42° |
| SIY | used from 247 nm out; 45 nm from the line | 050/17 1° | 010/16 -5° | 360/26 -8° | 360/71 -14° | 360/94 -23° | 360/88 -37° | 350/41 -40° | 290/17 -41° | |
| RDM | used from 395 nm out; 58 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 494 nm out; 27 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° |
| SEA | used from 593 nm out; 35 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 |
|---|---|---|---|---|---|---|---|
| MRY Monterey, CA | departure | VFR Sky: a broken layer at 4,000 feet | from the east (090°) at 7 knots | 10+ mi | 4,000 ft | 256 ft | 12:54 am PDT (07:54 UTC) |
| SJC San Jose, CA | 49 nm out, 4 nm southwest of the line, tower | VFR | from the southeast (140°) at 9 knots | 10+ mi | none | 62 ft | 07:53 UTC |
| LVK Livermore, CA | 69 nm out, 4 nm southeast of the line, tower | VFR | calm | 10+ mi | none | 399 ft | 07:53 UTC |
| CIC Chico, CA | 188 nm out, 7 nm northeast of the line, tower | VFR Sky: a few clouds at 12,000 feet | from the east-southeast (120°) at 3 knots | 10+ mi | none | 240 ft | 04:15 UTC |
| RDD Redding, CA | 237 nm out, 14 nm west of the line, tower | VFR | from the north (360°) at 12 knots, gusting to 21 | 10+ mi | none | 505 ft | 07:53 UTC |
| SIY Montague, CA | 316 nm out, 19 nm west of the line | VFR | from the north (360°) at 9 knots | 10+ mi | none | 2,651 ft | 07:53 UTC |
| LMT Klamath Falls, OR | 336 nm out, 15 nm east of the line, tower | VFR | from the north (010°) at 6 knots | 10+ mi | none | 4,095 ft | 07:53 UTC |
| TTD Portland, OR | 534 nm out, 9 nm northwest of the line, tower | VFR | calm | 10+ mi | none | 38 ft | 07:53 UTC |
| PLU Puyallup, WA | 633 nm out, 1 nm south of the line | VFR Weather: light drizzle | calm | 10+ mi | none | 537 ft | 08:15 UTC |
| SEA Seattle, WA | destination | VFR | from the west (270°) at 3 knots | 10+ mi | none | 432 ft | 12:53 am PDT (07:53 UTC) |
The highest airport on this list sits at 4,095 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, 7:05 am PDT (14:05 UTC)
Wind from the southeast at 4 knots, visibility more than 6 miles, patches of fog, clear skies VFR
The whole forecast for SEA
- From Sun 11:00 pm PDT (06:00 UTC): wind from the east-northeast at 6 knots, visibility more than 6 miles, clear skies
- From Mon 3:00 am PDT (10:00 UTC): wind from the southeast at 4 knots, 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 4 knots, visibility more than 6 miles, clear skies
- From Mon 11:00 am PDT (18:00 UTC): wind from the west at 6 knots, visibility more than 6 miles, clear skies
- From Mon 8:00 pm PDT (03:00 UTC): wind from the south at 4 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
The forecast for MRY, the departure
- From Sun 11:00 pm PDT (06:00 UTC): wind from the south-southeast at 6 knots, visibility more than 6 miles, a broken layer at 4,000 feet
- From Mon 11:00 am PDT (18:00 UTC): wind from the west-northwest at 8 knots, visibility more than 6 miles, a few clouds at 3,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/3475 BEALE AFB, CA, Sunday, March 8, 2026 through Sunday, November 1, 2026 Local 14 nm from the route, 148 nm along the route · security · until 1 November · ZOA
Daylight
Sunset at MRY 6:33 pm PDT (01:33 UTC), at SEA 6:25 pm PDT (01:25 UTC) (civil twilight ends 6:56 pm PDT (01:56 UTC)). At 120 knots the arrival at SEA 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: Monterey Regional, Seattle-Tacoma International.