028
AGUS76 KRSA 091931
HMDRSA

Hydrometeorological Discussion
National Weather Service / California Nevada RFC / Sacramento CA
1130 PM PST Thu Jan 9 2025

...WEAK WEATHER SYSTEM TO IMPACT FAR NORTHERN AREAS ON FRIDAY...
...OTHERWISE DRY UNDER NORTHERLY TO EVENTUALLY EASTERLY FLOW...

.METEOROLOGICAL CONDITIONS (THU PM - WED AM)...

Minimal changes to a mainly dry forecast going into the middle of
next week. A s/wv trof moving across southern BC and the Pacific
Northwest on Friday will drag the southern extent of this system
near the CA/OR border and far northern NV before diving across the
interior near the central Rocky Mountains. This will generate light
precip mainly near 0.10-inch or less...except 0.25-inch over the
crest of the southern OR Cascades near Crater Lake and the Ruby
Mountains over northeast NV. Freezing levels will start tomorrow
around 11000- to 12000-feet...dropping in the cooler airmass as the
s/wv trof passes the area and reaching from 3500- to 5500-feet
across the CA/OR border area and northern NV.

Otherwise...conditions will remain dry across the rest of the region
into the middle of next week...at least. Dry northerly flow will be
the rule with high pressure off the west coast...potentially turning
a bit more easterly as the high pressure builds across the Pacific
Northwest and a dry area of low pressure moves from the Great Basin
offshore of coastal southern CA southwest of Point Conception.


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



Kozlowski

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