674 FXUS65 KVEF 102316 AFDVEFArea Forecast Discussion National Weather Service Las Vegas NV 416 PM PDT Fri Oct 10 2025
.KEY MESSAGES...
* Scattered showers and storms continue a flash flood threat through Saturday, mainly for areas along and east of the Interstate 15 corridor.
* Moisture and precipitation chances get flushed out on Sunday as a trough swings through, leaving below-normal temperatures in its wake.
* Precipitation chances and gusty winds return mid-week as a more traditional cool-season, Pacific system approaches.
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.DISCUSSION...through Thursday.
Scattered showers and storms continue today, largely confined to San Bernardino, Clark, Lincoln, and Mohave counties. Like yesterday, relatively strong flow aloft will keep precipitation moving off to the northeast, so the ability for convection to train over the same area is going to dictate the flash flood threat. This morning`s guidance suggests that the greatest potential for training storms is broadly along the I-15 corridor. Satellite imagery shows widespread clouds southeast of I-15, and notable breaks in the cloud cover along and northwest of the interstate. These breaks should allow for instability to develop along the corridor this afternoon, and the differential heating boundary may act as a subtle forcing mechanism for storms. Farther southeast, abundant clouds will limit instability and likely keep precipitation in more of a stratiform mode, thus tempering the flash flood threat. Storms should begin to taper off after sunset this evening, but showers may linger overnight. As the next trough begins to move in tomorrow, moisture and precipitation chances get pushed into Mohave County and eastern Lincoln County. A lingering, isolated flash flood threat (~10%) persists, but will be lower than today`s risk.
By Sunday, the aforementioned trough will have swung through the area, scouring out moisture and leaving precipitation chances below 10% areawide. The drier airmass in its wake will also be notably cooler, with highs on Sunday roughly 10 degrees lower than Saturday. These below-normal temperatures are forecast to persist throughout next week, especially with another trough set to dig along the Pacific Coast. This system brings precipitation chances (20-50%) to the western half of our CWA, with chances increasing as you head west. In eastern Mohave County, the remnants of another tropical system bring 20-40% PoPs on Monday, but the bulk of precipitation is expected across central and southern Arizona.
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.AVIATION...For Harry Reid...For the 00Z Forecast Package...Showers and storms remain in the vicinity until ~06z this evening. Any outflow winds are most likely to be in the 15-30 knot range, but if a storm moves directly overhead, stronger gusts will be possible in addition to brief MVFR/IFR conditions. Scattered to broken clouds between 8-10kft. After 06z, precipitation chances move off to the northeast and sky conditions gradually improved. Winds are expected to be light and southerly or variable through the night. Dry conditions tomorrow with gusty southwest winds of 20-30 knots in the afternoon.
For the rest of southern Nevada, northwest Arizona and southeast California...For the 00Z Forecast Package...Scattered showers and storms continue this evening, primarily along the I-15 corridor and points east. Any outflow winds are most likely to be in the 15-30 knot range, but if a storm moves directly overhead, stronger gusts will be possible in addition to brief MVFR/IFR conditions. Scattered to broken clouds between 8-10kft. After sunset, storms should weaken with lingering showers into the overnight hours. Tomorrow, precipitation chances become confined to Mohave and eastern Lincoln counties. Elsewhere, expecting gusty southwest winds ahead of a cold front and gusty northwest winds behind it. By 00z Saturday, the cold front should be through most of Inyo, Nye, and Esmeralda counties.
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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/AVIATION...Woods
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NWS VEF Office Area Forecast Discussion