Harry Reid International to Livermore Municipal LAS → LVK
334 nautical miles (385 statute miles) west on a straight line, true course 289°, about 278° magnetic at the departure end (variation 11E). At 120 knots that is 2 h 47 min at the quickest height in today's winds (4,500 ft, no wind along the track), arriving about 7:17 pm PDT (02:17 UTC), after sunset at the destination. Right now LAS is VFR, wind from the south-southwest (210°) at 14 knots, gusting to 21; LVK is VFR, wind from the west-northwest (300°) at 12 knots, gusting to 19. 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: 2 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 SIERRA 2E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Near the route, at the departure end.
- AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the first 89 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the first 69 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the first 69 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 30 nm of the route.
- AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 69 to 89 nm out.
- AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. Over the route from 98 to 207 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 LAS.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- E75L at 18,000 ft, 32 nm north, 4:24 pm PDT (23:24 UTC): moderate turbulence from 18,000 ft to 22,000 ft, remarks: mountain wave a 10-knot loss of airspeed entered by zoa fdcs. 177 nm along the route, 32 nm north of the line.
as filed, and in English
LOL UA /OV BIH300011/TM 2324/FL 180/TP E75L/TB MOD 180-220/RM MTN WAVE /-10 ENTERED BY ZOA FDCS AWC-WEB
- Report
- a routine report filed through LOL
- Where
- 11 nm northwest (300°) of BIH
- Time
- 23:24 UTC
- Height
- at 18,000 ft
- Aircraft
- E75L
- Turbulence
- moderate from 18,000 ft to 22,000 ft
- Remarks
- mountain wave a 10-knot loss of airspeed entered by zoa fdcs
- B752 at 17,500 ft, 39 nm east, 3:48 pm PDT (22:48 UTC): a broken layer from 17,500 ft to 18,500 ft; overcast, remarks: layer of precip west of niitz 25 nautical miles lgt-hvy rain zlawc. At the departure end, 39 nm east of the line.
as filed, and in English
LAS UA /OV BLD065025/TM 2248/FL175/TP B752/SK BKN175-TOP185/OVC/RM LAYER OF PRECIP W OF NIITZ 25 NM LGT-HVY RAIN /ZLAWC AWC-WEB
- Report
- a routine report filed through LAS
- Where
- BLD065025 C
- Time
- 22:48 UTC
- Height
- at 17,500 ft
- Aircraft
- B752
- Sky
- a broken layer from 17,500 ft, tops 18,500 ft
- Remarks
- layer of precip west of niitz 25 nautical miles lgt-hvy rain zlawc
- B73M at 11,000 ft, 5 nm north, 2:45 pm PDT (21:45 UTC): light rime icing, overcast above 11,000 ft. At the departure end, 5 nm north of the line.
as filed, and in English
LAS UA /OV LAS350005/TM 2145/FL110/TP B73M/SK 110 OVC/IC LGT RIME
- Report
- a routine report filed through LAS
- Where
- 5 nm north (350°) of LAS
- Time
- 21:45 UTC
- Height
- at 11,000 ft
- Aircraft
- B73M
- Sky
- at 11,000 ft overcast
- Icing
- light rime
- CRJ2 at 18,500 ft, 34 nm south, 1:43 pm PDT (20:43 UTC): light rime icing, 2 °C, remarks: zlawc. At the departure end, 34 nm south of the line.
as filed, and in English
CDC UA /OV LAS200035/TM 2043/FL185/TP CRJ2/TA 02/IC LGT RIME/RM ZLAWC AWC-WEB
- Report
- a routine report filed through CDC
- Where
- 35 nm south (200°) of LAS
- Time
- 20:43 UTC
- Height
- at 18,500 ft
- Aircraft
- CRJ2
- Temperature
- 2 °C
- Icing
- light rime
- Remarks
- zlawc
- A20N at 23,000 ft, 45 nm south, 2:37 pm PDT (21:37 UTC): light rime icing from 21,000 ft to 23,000 ft, -21 °C, remarks: during the climb zlawc. 20 nm along the route, 45 nm south of the line.
as filed, and in English
CDC UA /OV LAS210050/TM 2137/FL230/TP A20N/TA M21/IC LGT RIME 210-230/RM DURC ZLAWC AWC-WEB
- Report
- a routine report filed through CDC
- Where
- 50 nm southwest (210°) of LAS
- Time
- 21:37 UTC
- Height
- at 23,000 ft
- Aircraft
- A20N
- Temperature
- −21 °C
- Icing
- light rime from 21,000 ft to 23,000 ft
- Remarks
- during the climb zlawc
- B38M at 37,000 ft, 29 nm north, 3:25 pm PDT (22:25 UTC): -41 °C, wind 215° at 61 knots, remarks: produced by skypath. 98 nm along the route, 29 nm north of the line.
as filed, and in English
TPH UA /OV BTY308020 /TM 2225 /FL370 /TP B38M /TA M41 /WV 21561KT /RM PRODUCED BY SKYPATH
- Report
- a routine report filed through TPH
- Where
- 20 nm northwest (308°) of BTY
- Time
- 22:25 UTC
- Height
- at 37,000 ft
- Aircraft
- B38M
- Temperature
- −41 °C
- Wind
- from 215° at 61 knots
- Remarks
- produced by skypath
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 4 forecast points nearest it (LAS, 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 | 200° at 10 kt | 0 | 11 °C | 120 kt | 2 h 47 min | 7:17 pm PDT (02:17 UTC) |
| 6,500 ft | 200° at 11 kt | 0 | 7 °C | 120 kt | 2 h 47 min | 7:17 pm PDT (02:17 UTC) |
| 8,500 ft | 210° at 15 kt | +4 kt | 5 °C | 116 kt | 2 h 53 min | 7:23 pm PDT (02:23 UTC) |
| 10,500 ft | 220° at 19 kt | +8 kt | 1 °C | 112 kt | 2 h 59 min | 7:29 pm PDT (02:29 UTC) |
| 12,500 ft | 220° at 22 kt | +10 kt | -3 °C | 110 kt | 3 h 02 min | 7:32 pm PDT (02:32 UTC) |
| 14,500 ft | 230° at 24 kt | +12 kt | -7 °C | 108 kt | 3 h 06 min | 7:36 pm PDT (02:36 UTC) |
| 16,500 ft | 230° at 26 kt | +15 kt | -10 °C | 105 kt | 3 h 11 min | 7:41 pm PDT (02:41 UTC) |
| 18,000 ft FL180 | 230° at 28 kt | +16 kt | -13 °C | 104 kt | 3 h 13 min | 7:43 pm PDT (02:43 UTC) |
| 24,000 ft FL240 | 230° at 34 kt | +18 kt | -23 °C | 102 kt | 3 h 16 min | 7:46 pm PDT (02:46 UTC) |
| 30,000 ft FL300 | 220° at 52 kt | +20 kt | -27 °C | 100 kt | 3 h 20 min | 7:50 pm PDT (02:50 UTC) |
| 34,000 ft FL340 | 220° at 49 kt | +20 kt | -34 °C | 100 kt | 3 h 20 min | 7:50 pm PDT (02:50 UTC) |
| 39,000 ft FL390 | 230° at 48 kt | +24 kt | -44 °C | 96 kt | 3 h 29 min | 7:59 pm PDT (02:59 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| LAS | used from 0 nm out; 25 nm from the line | 200/25 11° | 230/22 5° | 240/25 -1° | 220/37 -12° | 220/44 -21° | 210/52 -27° | 210/60 -34° | 220/58 -44° | |
| BIH | used from 98 nm out; 55 nm from the line | L/V | 210/14 6° | 210/20 -2° | 230/26 -14° | 220/32 -24° | 220/63 -27° | 220/56 -35° | 230/50 -44° | |
| FAT | used from 197 nm out; 26 nm from the line | 180/7 | 170/9 7° | 200/20 3° | 210/27 -3° | 240/27 -14° | 230/38 -24° | 220/57 -27° | 230/42 -33° | 230/41 -44° |
| SFO | used from 295 nm out; 45 nm from the line | 220/11 | L/V 5° | 280/7 1° | 270/15 -3° | 290/23 -14° | 310/29 -24° | 280/26 -28° | 250/30 -34° | 250/36 -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 |
|---|---|---|---|---|---|---|---|
| LAS Las Vegas, NV | departure | VFR Sky: a few clouds at 7,500 feet, scattered clouds at 10,000 feet, a broken layer at 14,000 feet, a broken layer at 18,000 feet | from the south-southwest (210°) at 14 knots, gusting to 21 | 10+ mi | 14,000 ft | 2,183 ft | 3:56 pm PDT (22:56 UTC) |
| BTY Beatty, NV | 89 nm out, 20 nm north of the line | no report just now | 3,169 ft | ||||
| MPI Mariposa, CA | 246 nm out, 12 nm north of the line | no report just now | 2,254 ft | ||||
| MER Atwater, CA | 275 nm out, 4 nm southeast of the line, tower | VFR | from the south-southwest (210°) at 6 knots | 10+ mi | none | 190 ft | 22:55 UTC |
| MOD Modesto, CA | 295 nm out, 7 nm northeast of the line, tower | VFR | variable at 4 knots | 10+ mi | none | 99 ft | 22:53 UTC |
| LVK Livermore, CA | destination | VFR | from the west-northwest (300°) at 12 knots, gusting to 19 | 10+ mi | none | 399 ft | 3:53 pm PDT (22:53 UTC) |
The highest airport on this list sits at 3,169 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At LVK when you get there the forecast at the estimated arrival, 7:17 pm PDT (02:17 UTC)
Wind from the west at 12 knots, visibility more than 6 miles, clear skies VFR
The whole forecast for LVK
- From Sun 5:00 pm PDT (00:00 UTC): wind from the west at 12 knots, visibility more than 6 miles, clear skies
- From Sun 10:00 pm PDT (05:00 UTC): wind light and variable, visibility more than 6 miles, clear skies
- From Mon 1:00 pm PDT (20:00 UTC): wind from the west at 7 knots, visibility more than 6 miles, clear skies
The forecast for LAS, the departure
- From Sun 5:00 pm PDT (00:00 UTC): wind from the south-southwest at 14 knots, gusting to 24, visibility more than 6 miles, showers nearby, a few clouds at 6,000 feet, scattered clouds at 8,000 feet and more above
- From Sun 8:00 pm PDT (03:00 UTC): wind from the south at 12 knots, gusting to 20, visibility more than 6 miles, a few clouds at 8,000 feet, a broken layer at 10,000 feet
- From Mon 1:00 am PDT (08:00 UTC): wind from the south at 7 knots, visibility more than 6 miles, a few clouds at 8,000 feet, a broken layer at 10,000 feet
- From Mon 8:00 am PDT (15:00 UTC): wind from the south at 8 knots, visibility more than 6 miles, showers nearby, scattered clouds at 7,000 feet, a broken layer at 10,000 feet
- From Mon 12:00 pm PDT (19:00 UTC): wind from the south-southwest at 15 knots, gusting to 25, visibility more than 6 miles, showers nearby, scattered clouds at 7,000 feet, a broken layer at 12,000 feet
- From Mon 8:00 pm PDT (03:00 UTC): wind from the southwest at 10 knots, visibility more than 6 miles, a few clouds at 8,000 feet, scattered clouds at 10,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/8808 Las Vegas, NV, Tuesday, October 13, 2026 Local on the route, at the departure end · security · starts Tuesday 13 October · ZLA
- 6/7094 45NM NE MERCED, CA, Sunday, October 4, 2026 through Tuesday, October 20, 2026 UTC 14 nm from the route, 236 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 20 October · ZOA
- 6/7231 Santa Clara, CA, Sunday, October 11, 2026 through Monday, October 12, 2026 UTC 18 nm from the route, at the destination end · drones kept away from a public gathering · until 12 October · ZOA
- 6/6741 SAN FRANCISCO, CA, Thursday, October 8, 2026 through Sunday, October 11, 2026 Local 25 nm from the route, at the destination end · air shows/sports · until 11 October · ZOA
Daylight
Sunset at LAS 6:08 pm PDT (01:08 UTC), at LVK 6:34 pm PDT (01:34 UTC) (civil twilight ends 7:00 pm PDT (02:00 UTC)). At 120 knots the arrival at LVK is after sunset there (6:35 pm PDT (01:35 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: Harry Reid International, Livermore Municipal.