Area Forecast Discussion
Issued by NWS Reno, NV

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FXUS65 KREV 092129

Area Forecast Discussion
National Weather Service Reno NV
129 PM PST Sat Dec 9 2017


High pressure will continue to bring dry conditions along with
valley inversions, cold nights, and light winds for the next
several days. Localized air quality issues are possible along the
Sierra Front due to the strong inversions. Inversions will likely
mix out late this coming week.



Minor adjustments were made to the existing forecast. Temperatures
were tamped down a little along the Sierra Front where valley
inversions have been strengthening over the past couple of nights.
Otherwise, changes were limited to increasing winds later this
coming week as a slider-type system moves into northern Nevada.

Seasonably warm afternoon highs and cool to cold overnight lows
remain forecast through much of the coming week. Valley inversions
persist under a coastal-Pacific high pressure. This trend, or lack
thereof, is expected to continue through Thursday.

By Friday, the coastal ridge is expected to retreat offshore into
the eastern Pacific allowing for a shift in the storm track. This
shift will allow a wave to drop out of the Pacific Northwest on a
slider-type track into Northern Nevada. Precipitation chances were
increased to around 10% for extreme northeast California and
extreme northwestern Nevada Friday night into Saturday.

While confidence in precipitation chances are fairly low, wind
speeds and cloud cover will likely increase with this passing
wave. This should result in improving air quality and better
overall mixing by next weekend. Boyd



VFR with light winds into next week with high pressure overhead.
Some haze around KRNO-KCXP is expected, but it should not be a
significant issue other than some minor reductions in slantwise
visibility. Some shallow ground fog can be expected in the
vicinity of KTRK each morning; restrictions to visibility should
be minimal and brief if they occur at all. MJD/Boyd


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