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Hydrometeorological Discussion
National Weather Service / California Nevada RFC / Sacramento CA
830 AM PDT Fri Sep 18 2020

...LIGHT PRECIP NRN CA AND SRN SIERRA AND OVER NV AND SRN OR TODAY 
INTO EARLY SAT...
...DRY FORECAST LATE SAT THROUGH MID WEEK NEXT WEEK...

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

A stream of mid and high level moisture from the remnants of 
tropical storm Karina over Central CA into Nevada this morning ahead 
of an upper level low off the Pac NW coast. This is bringing a few 
light showers over the Central and Southern Sierra and into Central 
Nevada today. Upper level low off Pac NW coast will move inland 
today and move east of the region by Saturday afternoon. A few light 
showers along the far NW CA coast this morning ahead of trailing end 
of front with associated trough.  Showers will spread farther inland 
during the day for some showers in Southern Oregon and far Northern 
CA today and continue into NE Nevada into Saturday morning. Precip 
amounts mainly less than a third of an inch.  Temperatures will be 
up to 10 degrees below normal across the northern portion of the 
region and a little above normal for the Southern today. 
Temperatures near to a several degrees above normal for the region 
for the weekend into early next week with weak onshore flow.  An 
upper level trough may move through the Pac NW for the end of the 
week for a possible chance of precipitation over far Nrn CA. 

Freezing levels around 9500 ft along ORCA border today otherwise 
above 10,000 ft.