Area Forecast Discussion
Issued by NWS Las Vegas, NV
Issued by NWS Las Vegas, NV
582 FXUS65 KVEF 280759 AFDVEF Area Forecast Discussion National Weather Service Las Vegas NV 1259 AM PDT Fri Jun 28 2024 .SYNOPSIS...Above normal temperatures and southwest breezes will continue into early next week. Monsoon moisture may make a return into eastern Mohave County for a slight chance of thunderstorms Sunday onward. Dangerous heat builds over the region middle to late next week. && .SHORT TERM...Through Saturday night. Trough axis along the northwest coast and broad ridge positioned to our southeast will place the southern Great Basin and Mojave Desert under a dry southwest flow today and Saturday. Highs will stay some 4 to 8 degrees above normal while southwest gusts top out between 20 and 30 mph. Final note, highest concentration of smoke and haze from the Fresno County wildfires will continue to impact primarily the southern Sierra and Owens Valley. .LONG TERM...Sunday through July 4th. Monsoonal moisture will begin to rebuild across Arizona as a large subtropical high pressure ridge builds across the southern US. This will result in an increase in thunderstorm coverage mainly in Mohave County starting Sunday and persisting into midweek. A southwesterly flow aloft will persist for locations west of the Colorado River and will limit the westward extent of thunderstorm chances, with dry and hot conditions being the rule across most of the Mojave Desert and southern Great Basin. By midweek, a large high pressure center will build along the West Coast, turning the flow aloft more north or northwesterly. This should focus any lingering monsoonal moisture further east, while rising heights will result in an expansion of and intensification of the heat. Wednesday onward, high heat risk is advertised across most of the Western Mojave Desert and may eventually lead to heat headlines as confidence increases in the coming days. && .AVIATION...For Harry Reid...Breezy southwesterly winds will continue into the morning hours with occasional 15 to 20 knot wind gusts. Winds will continue to maintain their southwesterly direction, but will begin increasing in magnitude throughout the morning and afternoon with wind gusts around 25 knots expected this afternoon. Wind gusts will continue into the evening hours before eventually dropping off. For the rest of southern Nevada, northwest Arizona and southeast California...KHND and KVGT will see southwesterly winds increase throughout the morning into the afternoon, with 15 to 25 knot wind gusts expected during the afternoon and evening hours. Winds at KBIH remain relatively light, 10 to 12 knots or less, and will follow typical diurnal directional trends with light and variable winds this morning before they settle in from the southeast. KDAG will favor a westerly direction with 20 to 30 knot wind gusts dropping off during the early morning hours and returning around mid- afternoon. The Colorado River Valley TAF sites will see breezy southerly winds increase with 20 knot wind gusts picking up later this morning and continuing through the afternoon. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && $$ SHORT TERM...Pierce LONG TERM...Outler AVIATION...Stessman For more forecast information...see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter