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CNRFC Hydrometeorological Discussion

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Hydrometeorological Discussion
National Weather Service / California Nevada RFC / Sacramento CA
625 AM PDT Mon Oct 19 2020

...STARTING THE WEEK WARM AND DRY...
...WRAPPING UP THE WEEK WITH LIGHT PRECIP NORTH AND COOLER...

.METEOROLOGICAL CONDITIONS (MON AM - SUN AM)...

An upr ridge continues to sit offshore over the eastern Pacific 
along 140W. This will bring dry and above normal afternoon 
temperatures to much of the area though midweek...before a s/wv trof 
moving across the Pacific Northwest and eventually the northern and 
central Rockies on Thursday. This will start to retrograde the upr 
ridge slightly to the west and open the door to a stronger s/wv trof 
and associated cold front that will track closer to the region and 
finally bring a chance of precip to area near the CA/OR 
border...northern NV...and portions of the northern/central Sierra 
Friday into Saturday. Also...models are hinting at the deepening 
marine layer bringing a few hundredths of an inch to coastal 
southern CA basins. Temperatures will also cool to near normal and 
then below normal by the end of the upcoming weekend.