textproduct: Reno

This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.

KEY MESSAGES

* Dry weather, light winds, and unseasonably warm temperatures continue through Monday.

* Hazy skies and minor reductions in air quality possible each morning across lower urban valleys along with patchy freezing fog in Sierra basins.

* A pattern change is expected to take place Tuesday, bringing increased winds and slight chances for precipitation primarily to the Sierra and northeast California.

DISCUSSION

The pattern has been on repeat all weekend, and we will hear the same old song again for Monday. Light winds will keep inversions locked over valleys and basins, so the associated haze and smog over western Nevada valleys continues, as will the fog over Sierra valleys. Cold air remains trapped in the valleys, and where fog is present may allow for some wet, slick roadways and pockets of icing in and around the Tahoe Basin. Until this ridging pattern breaks down for Tuesday, this is our state of being.

So, what is on the horizon for Tuesday? Well, Tuesday evening winds will begin to increase along ridges of the northern Sierra as showers work across northeastern California into western Nevada. The greatest chances (50-90%) will occur overnight Tuesday into Wednesday. The areas with the best opportunity to see showers will be along the northern Sierra from I-80 and northward to the Oregon border. The best we can squeeze out for south of US-50 and Mono County will be 30-50% chances of a few hundredths of precipitation above 9,500-10,000 feet. Elsewhere, the Basin and Range will stay dry through the end of the week.

This weekend another system looks to take aim at the region. This system initially looks a tad cooler, so it may have more snow potential. However, these details are in the longer range, and with little agreement of the exact track for this low it can be difficult to tease out the details this far in advance. HRICH

AVIATION

* LIFR/IFR in FZFG and low ceilings at KTRK and KTVL will be clearing for the afternoon, may return this evening. Winds will be light today for all Sierra terminals.

* KRNO, KCXP and KMEV all have slantwise visibility concerns through the period due to inversions. -McKellar/HRICH

REV Watches/Warnings/Advisories

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

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