447 FXUS65 KVEF 250504 AFDVEF Area Forecast Discussion National Weather Service Las Vegas NV 1004 PM PDT Thu Jul 24 2025 .KEY MESSAGES... * Below-normal temperatures and afternoon southerly breezes expected to continue through the weekend before temperatures heat up next week. * In general, dry conditions continue through the weekend into early next week. Monsoonal moisture increases across Arizona, resulting in precipitation chances for Mohave County mid-to-late week. && .DISCUSSION...Today through Thursday. A persistent, loitering closed low off the southern California coast will allow for continued below-normal temperatures across the Desert Southwest through the weekend. The resultant southwesterly flow aloft will help to elevate southerly breezes each afternoon across the forecast area, with peak gusts between 15 and 25 mph. The aforementioned closed low will weaken into an open wave over the weekend before getting swept away by a trough growing across the western CONUS. Meanwhile, a ridge of high pressure will continue to build and retrograde across the southern CONUS, which will increase heights over our region, allowing temperatures to climb back to at- or-above normal next week. The dry southwest flow aloft as a result of the closed low off the southern California coast will keep afternoon relative humidity values in the single-digits and precipitation chances near-zero through the weekend. The exception will be along the eastern Sierra Crest, where there is a 10-15 percent chance of isolated shower and thunderstorm activity today and Friday afternoon. Next week, a retrograding area of high pressure over the southern CONUS will help usher monsoonal moisture into the Desert Southwest. In general, this moisture will funnel into Arizona and New Mexico, as a trough digging through the western CONUS will limit moisture advection further west. Slight (20-40 percent) chances of showers and thunderstorms exist across Mohave County Tuesday through Thursday. Moisture content looks modest (0.50 - 0.75"), making erratic gusty winds and frequent lightning the primary concerns. && .AVIATION...For Harry Reid...For the 06Z Forecast Package...Southerly breezes continue tonight and Friday. A slight southeast component is expected during the late morning and early afternoon hours, but by the time gusts become more frequent, wind should shift to a south-southwest direction. Gusts forecast to be around 20 knots, dropping off near sunset. Few to scattered clouds at or above 15kft. Temperatures approach 100F from 21z to 01z. For the rest of southern Nevada, northwest Arizona and southeast California...For the 06Z Forecast Package...Light winds tonight give way to another day of southerly breezes on Friday. The exception to this is the KDAG area where winds remain westerly. Gusts generally in the 15-25 knot range across the region, but locally stronger gusts possible in the KBIH vicinity. An isolated storm is possible on the Sierra crest in the afternoon, but impacts in the Owens Valley are unlikely. Few to scattered clouds at or above 12kft. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && $$ DISCUSSION...Soulat AVIATION...Woods For more forecast information...see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter