...COOLER AND WETTER TODAY INTO WEDNESDAY...
...DRIER THU AND FRI BEFORE SOME SHOWERS ARRIVE FOR THE WEEKEND...

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

Radar imagery indicates a solid line of echoes streaming mainly from
south-to-north while making ever so slow progress to the
east...currently stretching from the northern and central Sierra
down across the northern San Joaquin Valley before reaching the area
around Point Conception. Some impressive precip totals over the past
24 hours with the greatest totals over Marin County...the Santa Cruz
Mountains...and portions of the Big Sur coast with anywhere from
2.00- to 3.00-inches. Otherwise...the higher terrain of northern CA
ranged from 0.75- to 1.50-inches with the Sacramento Valley
generally between 0.50- and 1.00-inch. This line continues to
produce moderate to locally heavy precip this morning.

The area of low pressure has made its way within 130W overnight and
is moving to the east primarily along 40N...which has allowed the
cold front to push the best precip slowly inland...expected to
primarily impact the length of the Sierra with the best totals today
in the range of 1.00- to 3.00-inches (greatest from the American
River basin south to the Merced River basin). Also...SPC continues
to paint a broad area of general thunderstorms across northern and
central CA inland over much of northern and western NV...as the area
sits in a favorable locations of the upr low and cooling
temperatures aloft. Any convection that does develop will generate
localized heavier precip amounts.

Into Wednesday...the upr low will open up and increase its forward
speed to the east...moving across northern CA and northern NV.
Scattered shower activity will be the rule in these areas with the
models showing the best potential for an uptick in precip near the
base of the s/wv trof from the SF Bay Area inland to the central
Sierra as the disturbance moves inland during the morning and
afternoon hours.

Thursday is looking to be a primarily dry day across the region as
the initial system moves downstream of the area while a secondary
disturbance takes up shop over the eastern Pacific off the central
CA out along 140W. This system is expected to make its way to the
east-northeast and cross the coast on Friday with troffing lingering
through Saturday. This will phase with another s/wv trof dropping
southward from the Pacific Northwest...and will bring scattered
light precip to the region mainly over the Sierra...coastal southern
CA higher terrain...and the state of NV.

Freezing levels this morning are running from 5500-feet along the
northern CA coast...6000- to 9000-feet over the Sierra (highest
ahead of the cold front)...and over 10000-feet for much of NV and
southern CA. As the colder airmass moves overhead later today into
early Wednesday...a broad area of 5000- to 6500-feet will cover
northern into central CA and portions of northern NV...while
remaining near or above 10000-feet for southern CA into extreme
southern NV. These will recover into Thursday and Friday as the
system moves downstream of the area with 9000- to 12500-feet the
norm. Then by the weekend with the next system arriving...look for a
broad area of 6000- to 9000-feet for freezing levels.

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.