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Hydrometeorological Discussion
National Weather Service / California Nevada RFC / Sacramento CA
640 AM PDT Wed May 15 2024

...WARMEST TEMPERATURES TODAY...
...NO WIDESPREAD ORGANIZED PRECIP EXPECTED INTO NEXT WEEK...

.METEOROLOGICAL CONDITIONS (WED AM - TUE AM)...

High pressure resides off the west coast and is centered with an 
approx 5880-meter cell close to 40N/140W this morning...while a weak 
disturbance is moving across the CA/MX border area. Mainly northerly 
flow aloft is dominant over CA and NV at this moment with the 
potential for some very scattered build ups and showers/t-storms 
across the southern Sierra and portions of the the higher terrain of 
coastal southern CA this afternoon and early evening. Temperatures 
should peak today as well with the greatest anomalies over northern 
CA and the upper Klamath River basin...generally 10- to 15-degF 
above seasonal norms...and to a lesser extent south and east.  

Through the rest of the week...look for the upr ridge to retrograde 
a bit to the west and move outside of 140W...while general troffing 
develops along the west coast. A weak disturbance will move east 
along 30N toward the coast near the CA/MX border...while a series of 
s/wv trofs moving across the northern Pacific will dig across BC and 
the Pacific Northwest. Might see some mainly afternoon showers and 
thunderstorms by this weekend mainly over the crest of the Sierra. 
Temperatures will cool closer to or below normal by next week.