FXUS65 KVEF 230734 AFDVEF Area Forecast Discussion National Weather Service Las Vegas NV 1234 AM PDT Sun Aug 23 2026 .KEY MESSAGES... * Above normal temperatures continue through next week. * Isolated storm chances linger into early next week, with best chances in northwestern Arizona and the southern Great Basin. && .DISCUSSION...Through Saturday. With a fairly persistent pattern expected, temperatures remain above normal through the forecast period. Ensemble guidance keeps the 500mb ridge anchored in southern NM and southeastern AZ, leaving us under south-southwest flow aloft. A subtle cooldown is expected Monday-Tuesday as moisture increases in our southeastern areas, but excessive heat quickly returns by mid-week and sticks around. Elevated low temperatures will offer little-to-no overnight relief, especially in the Mojave Desert. Major to extreme heatrisk is forecast to return to these areas during the second half of the week. The aforementioned south-southwest flow is just southerly enough to let moisture linger but southwesterly enough to keep it limited. These conditions should favor isolated afternoon convection, primarily in northwestern AZ and the southern Great Basin where odds are 10-30%. Main concerns with this activity are gusty outflow winds and dry lightning, though brief heavy downpours are possible. An influx of moisture on Monday may result in an uptick in coverage along/southeast of I-15, but models still disagree on the northwestward extent and magnitude of this influx. During the second half of the week, the flow acquires a greater westerly component, allowing moisture and precipitation chances to subside. && .AVIATION...For Harry Reid...For the 06Z Forecast Package... Expect southwesterly winds around 7kts through the night before weakening and becoming light and variable by the mid morning. Southeasterly winds arrive in the late morning with south- southwest winds arriving in the mid afternoon along with gusts around 20kt. Gusts cut off after sunset as winds turn southwesterly and reduce. Temperatures look to break 100 degrees shortly after 17z, peak at 00z, and cool below 100 shortly before 04z. Winds become light and variable into early Monday. For the rest of southern Nevada, northwest Arizona and southeast California...For the 06Z Forecast Package...Winds are reducing for all but KDAG which stays gusty until the late night. From then, all winds look to stay light through the night and much of the morning. Gustier winds arrive in the afternoon with peak gusts above 20kts possible. Passing showers will affect the valley into the afternoon but exit in the late afternoon. Stronger gusts at KDAG arrive slightly later in the early evening and look to last into the late night while the rest of the TAF sites see gusts cut off and winds lighten. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && $$ DISCUSSION...Woods AVIATION...Murdock For more forecast information...see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter