####018002750####
AGUS76 KRSA 061541

HMDRSA



Hydrometeorological Discussion

National Weather Service / California Nevada RFC / Sacramento CA

830 AM PDT Sat Apr 6 2024



...SCATTERED SHOWERS MAINLY OVER THE NORTH FOR THE WEEKEND...

...DRIER AND WARMER NEXT WEEK......



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



Weak shortwave ridge over the region this morning as the system 

moves off to the east and a weak shortwave trough approaches the Pac 

NW coast. The shortwave trough moves inland into the Pac NW and Nrn 

CA this afternoon into tonight then into Nevada on Sunday. This will 

bring scattered showers with precipitation accumulations generally 

less than a third of an inch (highest over west slope Srn Or 

Cascades and Smith and Shasta Basin and over Ruby mtns) over Srn OR 

and Nrn CA Coast and into the Shasta Basin and over far Nrn NV and 

NE NV Saturday into Saturday night. Precip mainly near the ORCA 

border and along the Sierra and over Nevada with accumulations 

generally a tenth of an inch or less on Sunday. High pressure builds 

into the region from the Eastern Pacific Monday into Thursday 

bringing warmer and drier conditions. 



Cold air over the region with the trough yesterday brought max temps 

around 10-25 degree below normal and broke or tied low max temp 

records at Fresno and Las Vegas and Desert Rock-Mercury, Bartsow and 

numerous locations in Orange and San Diego and western San 

Bernardino and Riverside Counties. Palomar Mountain (San Diego 

County) also tied the low minimum temp record for april 5 with 26 

degrees. Daily Max snowfall record set at Winnemucca on April 5 with 

6.6 inches. Warmer temperatures expected today with max temps around 

5 to 15 degrees below normal and around normal to 10 degrees below 

tonight. Max temps generally warm to near normal to around 15 

degrees below normal (coldest over Srn Sierra and NV) on Sunday and 

near normal to 10 degrees above normal Tuesday and 5 to 15 degrees 

above normal Wednesday and Thursday with possibly the warmest 

temperatures we have seen so far this year. 



Freezing levels generally around 2500-4000ft over CA and around 3000-

5000ft over far SE CA and NV this morning rising to around 4000-

6000ft over the Sierra and to 7000ft and higher over Srn CA and 5000-

7000ft over NV this afternoon and around 5000-8000 ft over the 

region on Sunday afternoon.  Freezing levels rise to around 7000 ft 

and higher over the region Monday afternoon and 9000-12000 ft 

Tuesday afternoon and remain around there through mid-week as high 

pressure builds into the region. 





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







Osborne



$$