455 FXUS65 KVEF 060529 AFDVEF Area Forecast Discussion National Weather Service Las Vegas NV 1029 PM PDT Sat Jul 5 2025 .KEY MESSAGES... * Temperatures will continue to warm through the first half of the week as a ridge of high pressure pushes into the region. Extreme Heat products may be needed for portions of the area by midweek. && .DISCUSSION...Today through next week. High-pressure ridging will continue to push into the area from the southeast through the weekend and into the first part of the week. Temperatures will continue to warm an average of 1 to 2 degrees each day as 500mb heights build to around 597dm by Wednesday. The latest NBM guidance has trended a bit warmer, and as a result, areas of Major Heat Risk are now appearing across the lower Colorado River and central and southern Mohave County. If current trends continue, Extreme Heat products may be needed for Wednesday. Any extreme heat is expected to be short-lived, as heights are expected to begin falling by Thursday as a shortwave trough moves into the Great Basin. There is a fair amount of uncertainty regarding the strength of the wave, but it should allow temperatures to cool by a few degrees by the end of the week. The cool-off will be short-lived, and another ridge will build into the Desert Southwest next weekend, and the strength and position of this ridge will determine how much temperatures can rebound. && .AVIATION...For Harry Reid...For the 06Z Forecast Package...Expect general diurnal trends through the TAF period with breezy southwesterly winds overnight, light east-northeasterly winds in the morning, and light southeasterly winds in the afternoon. Speeds will remain below 10 kts. No operationally significant cloud cover. Temperatures will exceed 100 degrees between 20 and 04Z Sunday. For the rest of southern Nevada, northwestern Arizona and southeastern California...For the 06Z Forecast Package...Expect general diurnal trends through the TAF period. For the Las Vegas Valley and Colorado River Valley TAF sites, speeds will remain below 10 kts, with the exception of KHND, where speeds will range 8 to 12 kts from the southwest overnight tonight and Sunday night. For KBIH, light northwesterly winds will give way to gusty south-southeast winds Sunday afternoon, with gust speeds between 20 and 25 kts. For KDAG, gusty west winds will subside overnight before returning Sunday at sunset with gust speeds between 25 and 30 kts. No operationally significant cloud cover. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && $$ DISCUSSION...Planz AVIATION...Soulat For more forecast information...see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter