textproduct: Reno

KEY MESSAGES

* Below seasonal temperatures with more typical winds for Friday and the weekend.

* Rain chances today and Friday for NE CA, NW NV, and the Tahoe Basin. Additional chances for precipitation on Sunday into Monday for NE CA and NW NV. * Uncertainty remains high regarding the trajectory of TS Marie, but an increase in tropical moisture could bring shower and thunderstorm chances to the region Sunday into early next week.

DISCUSSION

* Light rain showers are persisting this hour in western Lassen and Plumas counties, with a few isolated showers over northern Washoe County. Local weather stations are reporting light amounts, with rainfall totals between 0.01-0.10 inches since midnight. Strong winds materialized overnight into the morning, with maximum gusts up to 75 mph on Slide Mountain and 84 mph on Mammoth Mountain. Winds have calmed throughout today, but still remain breezy at the time of this writing.

* For the remainder of the day into tonight, light rain showers will likely (>60%) continue in the eastern Sierra, generally from northern Mono County northward into Lassen County. These areas have a likely (>70%) chance for at least 0.10 inches. For western NV, light showers are likely (50-80%) in Washoe County, mostly north of the Reno area and into western Pershing County. * On Friday, high resolution models show persistent showers in the Tahoe Basin and NE CA. Additional amounts are light, with the highest totals along the crests where there is a 30-50% chance for at least another 0.10". Otherwise, it will be breezy and much cooler than average as a large low pressure remains parked over the western US.

* For the upcoming Labor Day holiday weekend, the low pressure will remain situated over the western US. With this low in place, temperatures will remain upwards of 10 to 15 degrees below normal. High temperatures will increase into the mid to upper 70s for western NV valleys and mid to upper 60s for Sierra communities. Overnight lows for colder Sierra communities will continue to fall near freezing. Toward NE CA and northern Washoe, there is a better 40-50% chance for showers late Sunday into Monday as additional short-waves move along the periphery of the upper low. * A slight warming trend starts again by Wednesday, with highs back up in the low 80s for valleys. There still remains considerable uncertainty if any moisture from Hurricane Marie will work north in the region by the middle of next week. Models ensembles have a tough time with the progression of an upper level low, which will have an impact on moisture transport. -McKellar

AVIATION

Rain showers will bring MVFR/IFR conditions for KTRK/KTVL today (by 19Z) with lower CIGS/VIS. Light showers may impact KRNO/KCXP/KMEV but confidence is low. Expect mountain obscurations for all Sierra and Sierra Front sites today, with the exception of KMMH.

FL100 winds will range up to 50-60 kts through the evening, creating LLWS for all Sierra and Sierra Front sites. Otherwise, expect southwest winds gusting up to 35-40 kts.

-Giralte/McKellar

REV Watches/Warnings/Advisories

NV...Lake Wind Advisory until 11 PM PDT this evening NVZ002>004.

CA...Lake Wind Advisory until 11 PM PDT this evening CAZ071>073.