664
AGUS76 KRSA 291709
HMDRSA

Hydrometeorological Discussion
National Weather Service / California Nevada RFC / Sacramento CA
910 AM PST Sat Nov 29 2025

...LIGHT PRECIP MAINLY NV SUN AND TUE...
...LIGHT PRECIP MAINLY SRN CA COAST WED-THU...

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

Expect another day with no precipitation today under W to NW flow
aloft and with a dry airmass in place.  A trough and associated
front are expected to move into the central Great Basin Sun,
bringing light precipitation to mainly the NV portion of the
forecast area.  A similar system with a bit more westerly track is
expected around Tue, with precip expected into SW OR as well.
Freezing levels around 5000-10000 ft (lowest in the north) are
expected with both systems.

By Wed, models diverge with regard to the track of the second
system, with some taking the trough into the SW U.S. and other
forming a cutoff low off the southern CA coast.  Either scenario
could result in mainly light precipitation for the southern CA coast
and potentially parts of the Sierra.  Some of the ECMWF ensemble
members show the potential for heavier amounts due to their more
westerly trajectory in handling the system.  As with the previous
systems, we follows an NBM/WPC blend, which shows only light precip
for southern CA.  Freezing levels around 7000-9000 ft are expected.


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.

QPF graphics are available at www.cnrfc.noaa.gov/qpf.php



Lerman

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