


Area Forecast Discussion
Issued by NWS Las Vegas, NV
Issued by NWS Las Vegas, NV
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145 FXUS65 KVEF 140545 AFDVEF Area Forecast Discussion National Weather Service Las Vegas NV 1045 PM PDT Sun Jul 13 2025 .KEY MESSAGES... * Hotter than normal temperatures will continue into the week, with temperatures peaking on Monday when multiple heat headlines are in effect. * Monsoonal moisture will return to the region late this week, bringing increased chances for afternoon showers and thunderstorms. && .DISCUSSION...through next weekend. As temperatures peak tomorrow, we will see widespread Moderate (Level 2 of 4) to Major (Level 3 of 4) HeatRisk across the southern Great Basin and Major HeatRisk across portions of the Mojave Desert. As such, an Extreme Heat Warning has been issued for Death Valley National Park, Clark County, and the Lake Mead National Recreation Area; and a Heat Advisory has been issued for the southern Great Basin for tomorrow. In addition to hotter than normal temperatures, much of our forecast area will continue to experience hazy skies as smoke from area wildfires circulates under the bubble of high pressure. Our ridge of high pressure will weaken and retreat in response to a shortwave moving through the northwestern US. These falling 500 mb heights will allow for temperatures to "cool" back down to near normal during the middle of the week. Meanwhile, a cut-off low will develop off the coast of the Baja Peninsula during the middle of the week, which will help to transport moisture back into the area towards the end of the week. There still remains uncertainty regarding the magnitude of this moisture increase and how far into our forecast area the moisture will penetrate, both of which will play a role in precipitation chances, amounts, and impacts. && .AVIATION...For Harry Reid...For the 06Z Forecast Package...Light winds favoring southwest directions will prevail through the remainder of the night. The diurnal trend continues through tomorrow, including breezy southwesterly winds tomorrow evening with moderate gusts to around 15 knots. Isolated virga showers cannot be ruled out in the Peach Springs corridor this evening. Smoke from area wildfires will remain aloft through the TAF period. Temperatures will exceed 100 degrees between 18Z and 06Z, peaking around 112 degrees. For the rest of southern Nevada, northwest Arizona and southeast California...For the 06Z Forecast Package...Winds continue to follow diurnal directional trends with sustained speeds of 12 knots or less. Breezy westerly winds will conitnue across the western Mojave Desert into the overnight hours. Slantwise visibility will continue to be impacted by wildfire smoke aloft, but visibility restrictions at the surface are not expected. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && $$ DISCUSSION...Stessman AVIATION...Outler For more forecast information...see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter