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Hydrometeorological Discussion
National Weather Service / California-Nevada RFC / Sacramento CA
620 AM PDT Wed Aug 19 2026

...INCREASING CHANCES OF SHOWERS/T-STORMS OVER E NV AND SE CA 
STARTING TOMORROW THROUGH THE WEEKEND...
...TEMPERATURES HOVERING AROUND AVERAGE THROUGH THE PERIOD...

.METEOROLOGICAL CONDITIONS (WED AM - TUE AM)...

The upper ridge over the Four Corners has slowly drifted westward 
towards CA/NV as an upper low continues its approach to the PacNW. 
The creeping ridge is expected to bring temperatures over parts of 
CA and much of NV up to 10 deg F above normal the next couple of 
days while the low keeps coastal temperatures over nrn/central CA 
closer to normal. As the low approaches, it will push the ridge back 
inland keeping conditions near normal the rest of the period. Models 
continue to show increasing mid level moisture and instability over 
se CA and NV towards the end of the week. Minimal chances of 
showers/thunderstorms for eastern NV today with increasing chances 
there and over se CA starting tomorrow. Possible 
showers/thunderstorms may include parts of the Sierra over the 
weekend as well. Another low, this time dropping in from the Gulf of 
Alaska should continue the pattern of offshore troughing and inland 
high pressure into early next week.

Freezing levels expected around 13.5-17.5 kft through most of the 
period with some fluctuations.


Please Note: This product may NOT be routinely updated.
Please refer to the following product issued by the CNRFC
www.cnrfc.noaa.gov/Daily-Briefing for a graphical summary of
weather and hydrologic conditions.