St. Louis Lambert International to Monterey Regional STL → MRY
1,494 nautical miles (1,719 statute miles) west on a straight line, true course 275°, about 276° magnetic at the departure end (variation 1W). At 120 knots that is 14 h 30 min at the quickest height in today's winds (6,500 ft, a 17-knot headwind), arriving about 5:36 pm PDT (00:36 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: 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 W20W: thunderstorms (a convective SIGMET) up to 26,000 ft, moving from the south at 35 knots, until 6:55 am CDT (11:55 UTC). Over the route from 1016 to 1155 nm out.
as issued
WSUS33 KKCI 120955 MKCW WST 120955 CONVECTIVE SIGMET 20W VALID UNTIL 1155Z AZ UT NV FROM 50E ELY-40ENE BCE-70NNE PGS-70N LAS-ELY-50E ELY AREA TS MOV FROM 20035KT. TOPS TO FL260.
- AIRMET TANGO 2W: 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 70 to 538 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 618 to 1046 nm out.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the route from 647 to 837 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 677 to 896 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 787 to 1145 nm out.
- AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 847 to 1275 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 966 to 1135 nm out.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 120 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 STL.
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 08:00–15:00 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 12 forecast points nearest it (STL, COU, MKC, SLN, GLD, PUB, GJT, BCE, ELY, BIH, FAT, SFO). 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 | 240° at 23 kt | +21 kt | 99 kt | 15 h 05 min | 6:11 pm PDT (01:11 UTC) | |
| 6,500 ft | 240° at 19 kt | +17 kt | 14 °C | 103 kt | 14 h 30 min | 5:36 pm PDT (00:36 UTC) |
| 8,500 ft | 240° at 19 kt | +17 kt | 9 °C | 103 kt | 14 h 30 min | 5:36 pm PDT (00:36 UTC) |
| 10,500 ft | 230° at 21 kt | +17 kt | 4 °C | 103 kt | 14 h 30 min | 5:36 pm PDT (00:36 UTC) |
| 12,500 ft | 230° at 24 kt | +19 kt | 1 °C | 101 kt | 14 h 48 min | 5:54 pm PDT (00:54 UTC) |
| 14,500 ft | 230° at 28 kt | +23 kt | -4 °C | 97 kt | 15 h 24 min | 6:30 pm PDT (01:30 UTC) |
| 16,500 ft | 230° at 32 kt | +26 kt | -8 °C | 94 kt | 15 h 54 min | 7:00 pm PDT (02:00 UTC) |
| 18,000 ft FL180 | 230° at 35 kt | +29 kt | -11 °C | 91 kt | 16 h 25 min | 7:31 pm PDT (02:31 UTC) |
| 24,000 ft FL240 | 240° at 41 kt | +36 kt | -22 °C | 84 kt | 17 h 47 min | 8:53 pm PDT (03:53 UTC) |
| 30,000 ft FL300 | 250° at 58 kt | +55 kt | -30 °C | 65 kt | 22 h 59 min | 2:05 am PDT (09:05 UTC) |
| 34,000 ft FL340 | 250° at 60 kt | +58 kt | -37 °C | 62 kt | 24 h 06 min | 3:12 am PDT (10:12 UTC) |
| 39,000 ft FL390 | 250° at 55 kt | +54 kt | -46 °C | 66 kt | 22 h 38 min | 1:44 am PDT (08:44 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| STL | used from 0 nm out; 25 nm from the line | 250/26 | 240/21 15° | 240/22 11° | 250/23 6° | 270/28 -7° | 260/30 -19° | 280/52 -31° | 280/57 -40° | 300/57 -49° |
| COU | used from 50 nm out; 12 nm from the line | 250/36 | 260/14 16° | 250/5 12° | 260/12 6° | 260/24 -7° | 260/35 -19° | 280/58 -31° | 280/62 -40° | 290/60 -49° |
| MKC | used from 149 nm out; 26 nm from the line | 240/49 | 240/21 20° | 220/19 13° | 230/21 6° | 260/26 -7° | 250/37 -19° | 270/66 -31° | 270/65 -38° | 280/60 -48° |
| SLN | used from 249 nm out; 68 nm from the line | 230/49 | 240/41 22° | 230/26 15° | 220/21 7° | 240/38 -8° | 240/44 -21° | 260/77 -29° | 270/70 -36° | 270/63 -48° |
| GLD | used from 448 nm out; 61 nm from the line | 260/37 | 260/25 14° | 250/27 8° | 230/36 -8° | 230/49 -21° | 250/71 -30° | 260/82 -36° | 250/73 -48° | |
| PUB | used from 598 nm out; 52 nm from the line | 260/45 11° | 240/38 6° | 230/47 -8° | 230/51 -19° | 240/74 -29° | 240/82 -35° | 250/72 -48° | ||
| GJT | used from 747 nm out; 82 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° | ||
| BCE | used from 946 nm out; 62 nm from the line | 200/32 -2° | 210/57 -15° | 220/71 -22° | 220/69 -30° | 220/64 -38° | 220/67 -44° | |||
| ELY | used from 1096 nm out; 88 nm from the line | 210/34 1° | 220/40 -4° | 220/39 -17° | 210/51 -24° | 220/65 -30° | 220/60 -37° | 220/56 -44° | ||
| BIH | used from 1195 nm out; 101 nm from the line | L/V | 020/6 0° | 140/7 -7° | 210/31 -16° | 230/34 -26° | 220/43 -30° | 220/52 -36° | 220/46 -43° | |
| FAT | used from 1345 nm out; 26 nm from the line | 140/11 | 180/15 3° | 150/14 -3° | 200/14 -6° | 240/17 -16° | 320/25 -23° | 270/22 -31° | 240/29 -37° | 230/36 -44° |
| SFO | used from 1444 nm out; 75 nm from the line | 090/9 | 050/12 4° | 010/17 -2° | 350/34 -3° | 360/70 -11° | 360/75 -22° | 350/57 -38° | 330/37 -42° | 280/25 -44° |
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 |
|---|---|---|---|---|---|---|---|
| STL St Louis, MO | departure | no report just now | 617 ft | ||||
| COU Columbia, MO | 90 nm out, 4 nm southeast of the line, tower | no report just now | 889 ft | ||||
| FOE Topeka, KS | 249 nm out, 2 nm southeast of the line, tower | no report just now | 1,077 ft | ||||
| MHK Manhattan, KS | 299 nm out, 9 nm northeast of the line, tower | no report just now | 1,066 ft | ||||
| OEL Oakley, KS | 488 nm out, 8 nm north of the line | no report just now | 3,045 ft | ||||
| COS Colorado Springs, CO | 667 nm out, 3 nm southwest of the line, tower | no report just now | 6,187 ft | ||||
| MTJ Montrose, CO | 817 nm out, 7 nm southwest of the line | no report just now | 5,758 ft | ||||
| HVE Hanksville, UT | 956 nm out, 6 nm northeast of the line | no report just now | 4,453 ft | ||||
| MLF Milford, UT | 1056 nm out, 21 nm north of the line | no report just now | 5,042 ft | ||||
| BIH Bishop, CA | 1325 nm out, 8 nm north of the line | no report just now | 4,124 ft | ||||
| FAT Fresno, CA | 1394 nm out, 14 nm southeast of the line, tower | no report just now | 335 ft | ||||
| MRY Monterey, CA | destination | no report just now | 256 ft |
The highest airport on this list sits at 6,187 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At MRY when you get there the forecast at the estimated arrival, 5:36 pm PDT (00:36 UTC)
MRY has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/7634 CENTRALIA, MO, Monday, October 12, 2026 UTC 17 nm from the route, 80 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · today · ZKC
- 6/8784 LAKE GEORGE, CO, Sunday, October 11, 2026 through Tuesday, October 13, 2026 UTC 8 nm from the route, 707 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 13 October · ZDV
Daylight
Sunset at STL 6:27 pm CDT (23:27 UTC), at MRY 6:33 pm PDT (01:33 UTC) (civil twilight ends 6:59 pm PDT (01:59 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: St. Louis Lambert International, Monterey Regional.
