FXUS65 KVEF 241704

AFDVEF



Area Forecast Discussion

National Weather Service Las Vegas NV

1004 AM PDT Fri Oct 24 2025



.KEY MESSAGES...



* Gusty west winds expected across the region this weekend as a 

  weather system pushes into the Pacific Northwest.



* Dry conditions, temperatures near-normal, and mostly clear skies 

  expected through the forecast period.



&&





.DISCUSSION...Today through Thursday.



This weekend, a deep trough associated with a closed low over the 

Gulf of Alaska will push into the Pacific Northwest. As this occurs, 

the modest ridging over the Desert Southwest will deamplify, 

resulting in a quasi-zonal flow aloft. The trough axis will push 

through the southern Great Basin early Saturday, followed by the 

passage of a 115 kt 250mb jet streak. The cross-barrier flow will 

result in gusty west winds on the Sierra Crest, with downslope 

potential into the Owens Valley. Chances of 40 mph wind gusts 

crossing Highway 395 near Bishop are around 20 percent on Saturday. 

The other area of concern is the western Mojave Desert including 

western San Bernardino County, where there is a 20 percent chance of 

gusty west winds in excess of 40 mph Saturday night. Elsewhere, 

expect gusty south-southwest winds on Saturday between 20 and 30 

mph, with stronger speeds in the higher terrain. Breeziness will 

continue through Sunday as the trough lifts northward.



In addition to the aforementioned gusty winds, this weekend's 

weather will be characterized by temperatures near-normal and no 

chance of precipitation. Seasonal temperatures and dry conditions 

continue into the next work week, as the zonal flow aloft 

transitions into a dry northwest flow due to a growing area of high 

pressure over the southeastern Pacific Ocean. As is common this time 

of year with northwest flows aloft, we can expect occasional 

shortwave passages along the flow, which will increase afternoon 

breeziness, particularly along the Colorado River Valley, so boaters 

are urged to check the forecast before heading out on area lakes.

&&





.AVIATION...For Harry Reid...For the 18Z Forecast Package...Winds 

today remain light and follow typical, daily patterns. Chance of 10+ 

knots only around 20%, and any occurrences should be brief. Breezy 

southwest winds develop Saturday afternoon with gusts around 15-25 

knots. Clear skies today with high clouds moving in Saturday.



For the rest of southern Nevada, northwest Arizona and southeast 

California...For the 18Z Forecast Package...Light winds that largely 

follow typical, daily patterns can be expected across most of the 

region. The exception is the lower Colorado River Valley where 

northerly gusts of 15-25 knots are likely (80%) today. Winds subside 

in the late afternoon and evening. VFR conditions under clear skies 

today, with high clouds moving in Saturday.



&&



.SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report

any significant weather or impacts according to standard operating

procedures.



&&



$$



DISCUSSION...Soulat

AVIATION...Woods



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