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Hydrometeorological Discussion
National Weather Service / California Nevada RFC / Sacramento CA
810 AM PDT Tue Jun 2 2026

...WARM AND MAINLY DRY THIS WEEK...
...COOLING INTO THE FIRST HALF OF NEXT WEEK...

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

Similar pattern to yesterday as a system remains downstream of the 
area located over the northern Rockies...while a rather deep system 
continues to spin over the northeast Pacific in the vicinity of 
50N/145W. In between is a narrow wavelength upr ridge situated along 
the west coast with a rather weak disturbance just southwest of 
Point Conception...aiding in building a rather impressive marine 
layer along the coast. 

Once again...might see some build ups over the southern Sierra with 
some very scattered showers possible along the crest of the 
mountains. Otherwise...look for dry conditions with above normal 
temperatures in the range of plus 5- to plus 15-degF over seasonal 
averages...except along the immediate coast where the marine layer 
will keep temperatures in check.

A s/wv trof rotating off the upr low over the northeast Pacific will 
make its way toward the west coast tomorrow...mainly impacting the 
Pacific Northwest...but there is a potential for very scattered 
showers making their way down to the CA/OR border region. With 
heights lowering a bit in this area...temperatures may moderate 
downward just a tad. However...building high pressure from southwest 
of the CA coast will bring warmer temperatures to the southern 
portion of the region.

Thursday and Friday will see the upr ridge peak to the southwest of 
the CA coast with temperatures at their highest. Then into the 
weekend...the offshore system from the northeast Pacific will reach 
the west coast and bring general troffing to the area.  This will 
bring a downward trend in temperatures...generally below normal for 
Sunday through Tuesday...especially CA. Northeast NV may escape the 
biggest impacts in terms of temperatures and remain closer to or 
just above normal. Also...models are hinting at the potential for 
some scattered showers to develop over eastern NV as the upr trof 
moves in.

Freezing levels will start today from 12000- to 15000-feet...and 
lower just a tad close to the CA/OR border tomorrow before 
rebounding and peaking later Thursday from 14000- to 17000-feet. 
Then for the weekend into Monday and Tuesday...look for these to 
moderate a bit from 9000- to 14500-feet.
 

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.