873 FXUS65 KVEF 290801 AFDVEFArea Forecast Discussion National Weather Service Las Vegas NV 101 AM PDT Mon Sep 29 2025
.KEY MESSAGES...
* A series of disturbances will roll through the Western US this week, bringing isolated showers to the Great Basin and breezy, dry conditions to the rest of the region.
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.DISCUSSION...through Sunday.
The first in a series of shortwaves will approach the West Coast today, rolling through the Great Basin tomorrow. This first disturbance will bring a 20 to 40% chance of isolated showers and thunderstorms to the eastern Sierra and southern Great Basin today and tomorrow, with breezy 15 to 25 mph wind gusts across the region each afternoon. As this system rolls through, we will find ourselves under southwesterly-to-westerly flow aloft, which will help flush moisture from the region. A cut-off low will push into the Pacific Northwest later this week, before opening up and digging south into our forecast area. While there remains uncertainty regarding the timing and strength of this trough, we can expect breezy winds and cooler conditions to accompany it. These cooler temperatures look to stick around as long-term guidance shows this trough-y pattern continuing through the weekend and into early next week.
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.AVIATION...For Harry Reid...For the 06Z Forecast Package...Clearing skies are expected overnight with just FEW-SCt clouds around 8-10k feet along with southwest winds around 7 knots. Winds Monday are expected to remain under 10 knots and favor an east to southeast direction. FEW-SCT clouds around 10kft, favoring regional terrain features.
For the rest of southern Nevada, northwest Arizona and southeast California...For the 06Z Forecast Package...Winds overnight will generally remain less than 10 knots with just FEW-SCT clouds. Shower and thunderstorm coverage will be less Monday with most areas seeing south to southwest winds 10-20 knots and FEW clouds around 10kft.
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.SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures.
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DISCUSSION...Stessman AVIATION...Outler
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NWS VEF Office Area Forecast Discussion