textproduct: Reno

KEY MESSAGES

* Near-record high temperatures and dry weather will dominate through Sunday afternoon, accompanied by localized wildfire smoke today.

* A weak low-pressure system introduces a slight chance of rain (up to 5%) for the Sierra and northeast California from Sunday evening into Monday morning.

* Above-normal temperatures are expected to persist through mid- week, with a potential cooling trend arriving by next weekend.

DISCUSSION

Upper-level ridging over the western U.S. will maintain warm and dry weather through at least Sunday morning, with localized wildfire smoke filtering into the region today. High temperatures remain well above seasonal averages, with western Nevada and northeast California valleys reaching the mid-80s. Recent NBM indicates a 50- 80% chance today and Sunday for Reno-Tahoe International Airport to tie record highs for October 3rd and 4th (Climate section details below). An 80-90% probability of tying record warm overnight lows exists through early next week.

Late Sunday through Monday, a weak upper trough will move in across northern California, bringing around a 5% chance for light virga showers. The trough will also bring in gusty winds across the region, with gusts 25-30 mph. Behind the trough, high pressure will resume building Tuesday through Thursday, returning the dry and warm trend to the area. Beyond Thursday, yet another trough looks to drop in from the Pacific Northwest, bringing us firmly into the rollercoaster of temperatures the shoulder seasons tend to offer.

Smoke from the Dome Fire in Yosemite and the Bull Fire near Verdi will continue filtering into the region today. While widespread reduction in visibility is not expected across the broader region, hazy skies will persist in periods across the Sierra and Sierra Front. Sensitive groups should monitor air quality levels at airnow.gov. HRICH

AVIATION

* VFR conditions through the day with haze from nearby fires that may reduce slantwise visibility at times. Afternoon gusts will reach up to 15 kts. HRICH

CLIMATE

Near record high temperatures and near record warmest low temperatures are forecast for both area climate sites (Reno at KRNO and South Lake Tahoe at KTVL) this weekend into next week.

Current record high temperatures for Reno and South Lake Tahoe:

Date Reno NV South Lake Tahoe CA ---- ------------ ------------------- 10/3 91F (2024) 80F (2024) 10/4 89F (1987) 82F (1988) 10/5 89F (1979,1980) 80F (1991) 10/6 88F (1980,1991,1996,2004) 78F (2014) 10/7 87F (1964,1980,1996,2014) 78F (1991,2014)

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Current record warmest low temperatures for Reno and South Lake Tahoe:

Date Reno NV South Lake Tahoe CA ---- ------------ ------------------- 10/3 56F (2010) 49F (2007) 10/4 54F (2024) 45F (2015) 10/5 52F (1947,1999,2024) 39F (2024) 10/6 57F (2021) 46F (2021) 10/7 52F (2021,2024) 43F (2021)

REV Watches/Warnings/Advisories

NV...None. CA...None.