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CNRFC Hydrometeorological Discussion

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Hydrometeorological Discussion
National Weather Service / California Nevada RFC / Sacramento CA
815 AM PST Mon Nov 30 2020

...LIGHT PRECIP FAR NORTH COAST AND UPPER KLAMATH BASIN TODAY 
OTHERWISE DRY NEXT SEVERAL DAYS...

.METEOROLOGICAL CONDITIONS (SHORT TERM: MON AM - TUE NIGHT)...

A trough moving into the Pac NW with a trailing cold front off the 
northern CA coast is beginning to spread light showers into southern 
OR and far NW CA.  Expect light precip to be confined to these areas 
today and end by this afternoon.  A stray shower in NE NV cannot be 
ruled out tonight as the front passes by.  Expect freezing levels 
7000-8000 ft to lower to 4000-6000 ft.  Ridging is expected to 
develop over the west coast and provide dry conditions Tue-Wed.


.METEOROLOGICAL CONDITIONS (LONG TERM: THU AM - SUN AM)...

A rex block pattern develops bringing dry conditions. A couple 
systems weakening as they approach high pressure over the north.  A 
weak system approaches the coast Thursday but precip expected to 
stay offshore as it runs into the ridge of high pressure over the 
region. Another weak system approaches the Pac NW late 
Saturday/early Sunday but precip should stay out offshore. December 
looks like it will be fairly dry with below normal precip for the 
first half of the month.