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Hydrometeorological Discussion
National Weather Service / California-Nevada RFC / Sacramento CA
615 AM PDT Mon Jun 22 2026

...HIGH PRESSURE TO BRING INCREASING TEMPERATURES THROUGH MID WEEK 
AND MID LEVEL MOISTURE/INSTABILITY INTO SE CA/S NV TUES/WEDS...
...COOLING INTO THE COMING WEEKEND AS A LOW APPROACHES ALONG WITH 
CHANCES OF SHOWERS FOR N CA/NV FRI/SAT...

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

High pressure pushing overhead through mid week will result in 
rising temperatures across the region, particularly away from the 
coast. Expecting widespread anomalies of +5 to +15 deg F through at 
least Wednesday away from the coast. Mid level moisture and 
instability rotating into southern CA/NV Tues and Weds may result in 
some showers and thunderstorms. Additional moisture/instability over 
far nrn CA and eastern NV Wednesday is expected as well. Some 
troughing moving in on Thursday will help push this moisture and 
instability out of the area while acting to begin to moderate 
temperatures. A larger upper low moving through the Gulf of Alaska 
will push additional troughing into CA/NV on Friday lowering 
temperatures across the region and generating chances of showers 
over nrn CA/NV Friday and Saturday. Amounts for the moment look 
generally less than 0.10" with some spots along the northern 
regional border closer to 0.10-0.25". Temperature anomalies from the 
cooling are forecast to be -5 to -15 deg F Friday through the 
weekend.


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.