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

* Light winds and valley inversions through Thursday morning will maintain hazy skies and air quality reductions for all valley areas with patchy freezing fog in some Sierra valleys.

* A passing wave Thursday may bring gusty mountain ridge winds and low chances for showers to the Sierra and portions of western Nevada late week.

DISCUSSION

Main story this week continues to be high pressure with light winds, dry conditions, and stable air which is contributing to strong valley inversions. With the strong inversions in place, we can plan on hazy skies and reductions in air quality through at least Thursday morning. Portions of Mono county, particularly Lee Vining and Mono Lake, will continue to deal with the very persistent freezing fog conditions. We recommend keeping an eye on airnow.gov until the inversions and stagnant air break up.

Although there is a shred of light at the end of the stagnant weather tunnel, there are still some discrepancies in the solutions. We are keeping an eye on a cut-off low projected to drag southward along the West Coast with the potential for increased ridge winds and shower chances. There is a 20-30% chance of some snow showers early Thursday into Friday for areas Tahoe southward into the Eastern Sierra. The amounts will depend on how the cut-off low tracks down CA, but for now it looks like there could be very light accumulations in the higher elevations (an inch or less). Gusty ridge winds will transition from west to east Friday into Saturday with gusts 20 to 30 mph at times. Otherwise, there isn't much in the way of meaningful precipitation through the end of the week.

-Edan

AVIATION

VFR conditions and light surface winds persist for Sierra and western Nevada TAF sites through early Thursday. The only exception is at KTRK where patchy and mainly shallow FZFG is expected to renew tonight into tomorrow morning (until about 15-16Z). Strong surface inversions and light winds will allow for haze in W.NV to reduced slantwise visibilities through early Thursday morning.

-Edan

REV Watches/Warnings/Advisories

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

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