498 FXUS65 KVEF 081814 AFDVEFArea Forecast Discussion National Weather Service Las Vegas NV 1114 AM PDT Mon Sep 8 2025
.KEY MESSAGES...
* Dense smoke and poor air quality to continue through the morning hours in the northern Owens Valley, and may reoccur the next few nights.
* A Pacific trough brings cooler, drier, and windier conditions this week.
&&
.DISCUSSION...through Sunday.
Area webcams show the dense wildfire smoke that settled into the northern Owens Valley this evening. Visibility at the Bishop Airport has ranged between 1-2 miles all night. Meanwhile, air quality sensors depict unhealthy air quality in the area. These conditions are likely to persist through the morning hours. By the afternoon, surface heating and increased winds should help mix out and disperse some of the smoke, but it may return again in the evening and subsequent evenings. Behavior of the Garnet Fire will dictate the severity of smoke.
Otherwise, the main weather of note will be the seasonably pleasant conditions expected this week thanks to a Pacific trough pushing into the region. Southwest breezes have already begun to scour out moisture and precipitation chances, and that continues today with PoPs limited to Mohave County and only ~10%. Beyond that, the only notable precipitation chances (10-30%) reside in the Sierra and our NW zones due to the trough itself. For the rest of the area, expecting dry conditions and gusty southwest winds of 20-40 mph this week. Temperatures across the area gradually decrease through Thursday, eventually falling 8-12 degrees below normal. As we head into the weekend, temperatures rebound slightly while quieter conditions return. &&
.AVIATION...For Harry Reid...For the 18Z Forecast Package... Gusty south-southwesterly winds expected through the afternoon, with gust speeds peaking around 25 kts. Gusts decrease in speed and frequency after sunset before returning late-morning on Tuesday with speeds between 25 and 30 kts. FEW aoa 25 kft. Temperatures will remain below 100 degrees.
For the rest of southern Nevada, northwestern Arizona and southeastern California...For the 18Z Forecast Package... Gusty south-southwest winds will pick up across the Las Vegas Valley and Colorado River Valley this afternoon, with gust speeds peaking around 25 kts. KBIH will continue to experience reduced visibilities over the next couple of hours from smoke from the Garnet Fire, but will improve greatly through the afternoon with breezy south- southeasterly winds. Visibilities will reduce once again after sunset with the return of northerly winds. KDAG will gust from the west between 25 and 30 kts intermittently throughout the TAF period. FEW aoa 25 kft. &&
.SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures.
&&
$$
DISCUSSION...Woods AVIATION...Soulat
For more forecast information...see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter
NWS VEF Office Area Forecast Discussion