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AGUS76 KRSA 241459

HMDRSA



Hydrometeorological Discussion

National Weather Service / California Nevada RFC / Sacramento CA

700 AM PST Sat Feb 24 2024



...DRY CONDITIONS FOR THIS WEEKEND...

...NEXT OPPORTUNITY FOR PRECIP MAINLY MON AND THEN END OF THE WEEK...



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



Another dry day on tap across the region as a high pressure ridge 

extends from the Desert Southwest back to the northwest toward 

southern OR and northern CA. Afternoon high temperatures will once 

again run above normal for much of the region...peaking around plus 

10-degF for anomalies across the upper Klamath River basin and 

northeast CA Plateau. Much of Sunday will be a pleasant day as 

well...as the offshore upr low spinning between 140W and 130W 

finally begins to make very slow progress to the east along 30N. At 

the same time...a disturbance moving up and over the east-central 

Pacific upr ridge will make its way across the Gulf of Alaska and 

begin to dive toward the southeast on a trajectory for the Pacific 

Northwest coast. 



Monday will transition to cooler and wetter as the upr low meanders 

off the southern CA coast...while the s/wv trof moving across the 

Pacific Northwest on its way toward the northern and central 

Rockies...clipping the northern portion of the area as it moves 

inland. Currently...the best precip looks to fall across areas near 

the CA/OR border and northeast NV...in closest vicinity of the 

northern s/wv trof...and then across the length of the Sierra where 

upslope flow and enough moisture being drawn across the area from 

the southern upr low will provide for widespread moderate precip. 

Freezing levels should start around 5000- to 6000-feet across far 

northern areas...and 6500- to 7500-feet across the Sierra early 

Monday. These will come down as the s/wv trof moves 

inland...especially northern area...2000- to 3000-feet for northern 

areas and 4000- to 7000-feet for the length of the Sierra.



For Tuesday...the weakening upr low will move inland across northern 

Baja with the potential of some light precip across the CA/MX border 

area. Otherwise...conditions will dry out across much of the area as 

the next system forms over the Gulf of Alaska and northeast 

Pacific...eventually digging along the west coast for the end of the 

week. Look for precip to be on the increase across southern OR and 

northern CA with the best totals over coastal areas from the Eel 

River basin northward and then inland from the crest of the southern 

OR Cascades down through the Shasta Lake drainage and northern 

Sierra. Freezing levels will dip as the cooler air filters across 

northwest CA and the upper Klamath River basin...down to about 2500- 

to 3500-feet...and 4000- to 5000-feet along I-80 by early Friday.





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







Kozlowski



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