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AGUS76 KRSA 131915

HMDRSA



Hydrometeorological Discussion

National Weather Service / California Nevada RFC / Sacramento CA

1215 PM PDT Wed Mar 13 2024



...UPPER LOW TO GENERATE SCATTERED SHOWERS MAINLY SOUTH/EAST...



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



Thinking remains the same with an upr low dropping into the Great 

Basin primarily along the UT/NV border before settling in the 

vicinity of the CA/NV/AZ triple point. At the same time...a strong 

upr ridge just off the west coast will build toward BC and the 

Pacific Northwest. This will generate generally dry north to 

northeast flow for much of the region. In the area where the upr low 

resides through the end of the week...look for moisture to become 

entrained into the system and primarily impact the Four Corners 

states. It does look like enough moisture will wrap around the 

circulation and make its way across far southern/eastern NV along 

with portions of southern CA that may generate some scattered 

showers. Freezing levels will show a sharp gradient from about 10000-

to 11000-feet northwest to approx 3500- to 5500-feet east.





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



Guidance continues to forecast the persistent high-low dipole 

between the Pacific Northwest and the CA/NV/AZ border through the 

long-term window. The low over the southeastern portions of the 

forecast region will provide support for light-to-moderate shower 

and thunderstorm activity with accumulations generally less than a 

tenth of an inch, though locally higher amounts within 

thunderstorms. 



Afternoon forecasts have continued to follow WPC guidance, keeping 

accumulations low, and only slightly changing due to the uncertainty 

in exact location, track, and timing of shower activity. Freezing 

levels generally around 10,000 feet in northern CA and around 5,000-

7,000 feet over southern California and Nevada Saturday before 

rising to 7,000-9,000 feet over the south on Sunday and into Monday. 







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







Kozlowski/CH



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