...DRY WEATHER THROUGH MID-WEEK UNDER ANOMALOUS RIDGE...
...RETURN TO WETTER PATTERN ON WEDNESDAY AS TROUGH APPROACHES FROM
NORTH AND CUTOFF APPROACHES FROM SOUTH...

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

Ridging has continued to build over the Eastern Pacific driving dry
conditions across the forecast area. This ridge is forecast to
persist into mid-week before weakening and shifting east on
Wednesday, keeping the forecast dry for a few days.

As the ridge weakens on Wednesday, an upper level-level trough is
forecast to approach northern California from the Gulf of Alaska and
interact with a slow moving cutoff approaching from the south.
Models are struggling to agree on the exact phasing and interaction
between these two systems and, therefore, the onset and magnitude of
precipitation over California. Currently, light precipitation is
forecast to begin spreading northward over southern California on
Wednesday morning before making its way to northern California on
Thursday morning. Persistent troughing and shortwave activity from
the Gulf of Alaska may keep the pattern relatively wet through the 6-
day forecast window.

Current forecasts primarily followed guidance from the NBM and WPC
placing the heaviest accumulations of >1 inch over the southern CA
coast, northern Sierra, Cape Mendocino, Santa Cruz Mountains, and
Big Sur coast. A majority of the Sierra, outside of the Yuba and
Feather Basins, are forecast to receive .5 to 1 inch through the end
of the forecast period. Light precipitation (<.25 inches) is
expected throughout the Central Valley.

Freezing levels will remain above 12k feet underneath the ridge
across much of the forecast area before lowering to ~5k feet across
the north, ~7k feet across the southern Sierra, and 9k feet across
the south during the active pattern.

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.