...AREA OF PRECIP SHIFTING ACROSS NORTHERN CA THIS EVENING...
...SLOW MOVING LINE OF PRECIP AFFECTING SBA/VTU COUNTIES...
...CONDITIONS FINALLY BEGIN TO DRY OUT THIS WEEKEND INTO NEXT WEEK...

.METEOROLOGICAL CONDITIONS (THU PM - WED AM)...

Across much of northern CA this evening...a broad area of precip is
shifting northeast ahead of a mid-level disturbance rotating from a
current position around 40N/128W toward the coast between Cape
Mendocino and the CA/OR border by 26/06Z. Embedded in this area of
precip is plenty of convective cells with the numerous lightning
strikes detected through the afternoon and now evening hours. This
activity should decrease through the overnight hours as the best
forcing lifts off north of the area...and leaves the highest precip
amounts over the west slope of the Sierra...where orographics
continue to drive precip production. Southwest winds along the
entire range will be between 40- and 50-kt.

Another area of concern this evening is ahead of a very slow moving
boundary stretching north-to-south between Santa Barbara and Los
Angeles counties. Ahead of this feature to the east is a narrow
moisture plume with PW values just over 1.00-inch. Along with 850-mb
flow from the south to southwest...upslope conditions over the
transverse ranges in this area are producing moderate to locally
heavy precip amounts. Since 26/00Z...precip gauges are showing the
best totals over Oxnard and points northward straddling the Ventura
River basin to the west and Santa Clara River basin to the east with
1.25- to 1.75-inches. The 26/00Z HRRR shows slow movement of the
precip to the east overnight before finally picking up forward speed
during the daylight hours on Friday. As a result...increased the
previous forecast from eastern Santa Barbara county and all of
Ventura county over the next two 6-hour periods (ending 26/06Z and
26/12Z).

Friday will finally be the day that draws an end to this multi-day
precip event as the overall offshore upr trof becomes positively
tilted as it shifts inland...being replaced by an upr ridge building
over the eastern Pacific and eventually west coast. Look for dry
conditions to for much of the upcoming weekend...lasting into next
week...and possibly even ringing in 2026.