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Hydrometeorological Discussion
National Weather Service / California Nevada RFC / Sacramento CA
655 AM PST Wed Jan 26 2022

...DRY CONDITIONS THROUGH SATURDAY EXCEPT A FEW SHOWERS POSSIBLE OVR 
SRN CA MTNS SATURDAY AFT/EVE...
...LIGHT PRECIP POSSIBLE OVER SRN OR AND NRN CA AND NRN NV 
SUNDAY/MONDAY...

.METEOROLOGICAL CONDITIONS (SHORT TERM: WED AM - SAT AM)...

Dry conditions continue through Saturday morning. Ridge of high 
pressure centered just off the west coast shifts east to over the 
region Thursday into Friday as a cutoff low spins offshore of the CA 
coast. 


.METEOROLOGICAL CONDITIONS (LONG TERM: SAT AM - TUE AM)...

High pressure will be displaced inland for the upcoming weekend as a 
weak upr low spins toward the southern CA coast. This feature looks 
primarily dry...but there may be a few scattered light showers over 
the coastal mountains from San Bernardino county south to the CA/MX 
border on Saturday afternoon as the feature moves inland on its way 
toward AZ. 

Attention next turns to an approaching s/wv trof...that is now 
looking to split offshore generally along 140W with the southern 
piece forming a cutoff low well offshore close to 30N/140W. The 
weakened northern piece will then make its way toward the Pacific 
Northwest with the southern extent of the system moving across 
northern CA and northern NV on Sunday with a reinforcing s/wv trof 
dropping southeast from the Pacific Northwest toward the Great Basin 
on Monday. The 26/00Z EC is a bit farther west as compared to the 
GFS...which would bring some light precip to the crest of the Sierra 
and points east (along with some increased northerly winds). The GFS 
would be drier with only some light scattered precip over northeast 
NV. 

Freezing levels start the period from 8500- to 11000-feet across the 
region from north to south. With the s/wv trof moving across 
northern areas look for freezing levels to dip down to approx 2500- 
to 4000-feet near the CA/OR border and far northern NV and approx 
6000- to 7500-feet along the I-80 corridor. Then with the subsequent 
system dropping toward the region...freezing levels will drop down 
to about 1000- to 2000-feet from the upper Klamath River basin over 
toward the Humboldt River basin in NV. The Sierra will be approx 
3000- to 5000-feet with 6000- to 9000-feet along coastal 
central/southern CA.