073 FXUS65 KVEF 210238 AFDVEF Area Forecast Discussion National Weather Service Las Vegas NV 738 PM PDT Fri Jun 20 2025 .KEY MESSAGES... * Critical fire weather conditions will continue through Saturday across southern Nevada and northwest Arizona due to low humidity and gusty winds. * Gusty winds will continue across the area, spreading into northwest Arizona on Saturday. * Temperatures will decrease as we head into the weekend, dropping below normal on Saturday and remaining cooler than normal through early next week. && .UPDATE...Only forecast tidbit worth updating is the potential for more smoke to move in our area tonight and tomorrow. Smoke from a fire in far NW Baja California is forecast to drift northeastward, moving into portions of Mohave County and far SE San Bernardino County. Then, as the cold front pushes south tomorrow, smoke from a fire near Carson City will likely be advected into our NW zones, especially the Owens Valley. With SW flow expected to resume on Sunday, any additional smoke will have to be sourced from SoCal or Baja California. && .DISCUSSION...through next Friday. An area of low pressure system will continue to push inland and dig south over the weekend, resulting in gusty south to southwest winds across the region. These winds, combined with low humidity and critical fuels will result in increased fire danger today and tomorrow for portions of southern Nevada and northwest Arizona. Multiple Red Flag Warnings are currently in effect. More details regarding the Red Flag Warnings can be found in the FIRE WEATHER discussion below. A Wind Advisory remains in effect for the western Mojave Desert this afternoon and will run through Saturday night. Another Wind Advisory will go into effect for Mohave County on Saturday morning, running through late Saturday night. Additionally, 20 to 25 mph sustained southwesterly winds with gusts up to 40 mph will result in 1 to 3 foot waves on Lake Mead, Lake Mohave, and Lake Havasu on Saturday. As such, a Lake Wind Advisory has been issued for the Colorado River Valley for Saturday. As the aforementioned area of low pressure moves further inland, we will see temperatures decrease with cooler than normal temperatures on tap for the region over the weekend. These cooler than normal temperatures will persist into early next week as the trough remains positioned over the Desert Southwest. Temperatures will be near normal by Wednesday with continued warming through the end of the week. && .AVIATION...For Harry Reid...For the 00Z Forecast Package...South to southwest winds are expected through Saturday, with gusts of 27 to 32 knots expected this afternoon and again Saturday afternoon. Winds will decrease slightly overnight, although occasional gusts to 25 knots. No weather or significant cloud cover is forecast. Temperatures will remain above 100F through 02Z, with a maximum of 103F expected around 00Z. For the rest of southern Nevada, northwest Arizona and southeast California...For the 00Z Forecast Package...Conditions at the Las Vegas area terminals will be similar to those described above for Harry Reid. Gusty southwest to west winds near KBIH before turning back to the north around sunset. Winds will increase out of the northwest behind a cold front mid to late afternoon on Saturday. Across the western Mojave Desert, strong west winds will continue through the period with gusts as high as 40 knots possible at KDAG. Winds will be a bit lighter in the Colorado River Valley, although gusts of 25-35 knots will be possible at both KEED and KIFP. No weather or significant cloud cover is forecast through Saturday. Lighter winds expected on Sunday. && .FIRE WEATHER...A Red Flag Warning remains in effect for Nevada Fire Weather Zones 462, 463, and 464 through 11:00 pm PDT tonight. An additional Red Flag Warning remains in effect through 11:00 pm PDT/MST Saturday night for Nevada Fire Weather Zones 461, 465 and 466, as well as Arizona Fire Weather Zones 101 and 102. The warning was extended through Saturday for Zone 461. South to southwest winds sustained at 20 to 25 mph are expected across southern Nevada and northwest Arizona today. These winds will be accompanied by wind gusts of 40 to 45 mph. Afternoon relative humidities will bottom out in the single digits with overnight recoveries in the 15 to 25% range. Low humidity will persist into Saturday, with strong winds persisting across far southern Nevada and Mohave County. As a result of the low humidity and strong winds, there is an increased risk of wildfire starts and spreading. Outdoor burning and recreation involving sparks or flames is not recommended. Winds across the region will decrease on Sunday, which will mitigate wildfire risk. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && $$ UPDATE...Woods DISCUSSION/AVIATION/FIRE WEATHER...Czyzyk For more forecast information...see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter