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AGUS76 KRSA 012044
HMDRSA

Hydrometeorological Discussion
National Weather Service / California Nevada RFC / Sacramento CA
130 PM PST Mon Dec 1 2025

...EASTERN PACIFIC RIDGING WILL KEEP MOST OF THE REGION DRY
THROUGHOUT THE WEEK...
...LOW CONFIDENCE IN PRECIPITATION ACCUMULATIONS ACROSS THE NORTH
BEGINNING FRIDAY AND INTO SATURDAY...


.METEOROLOGICAL CONDITIONS (MON PM - SUN AM)...

Little to no changes made to the afternoon forecast as eastern
Pacific ridging continue to dominate the flow regime over the
forecast area. Precipitation accumulations were increased slightly
(~0.2 inches) over the Ruby Mountains in NE Nevada as an inside
slider is forecast to crash down the downstream side of the ridge
tomorrow into Wednesday morning.

Models continue to exhibit large uncertainty beginning Friday as
the ridge starts to flatten out and increase the opportunity for
unsettled weather over the northern portions of the forecast area.
Afternoon forecasts slightly decreased accumulations over the North
Coast, falling in line with trends exhibited by the NBM and EC.

Freezing levels are forecast to start the period above 13k feet over
the west/coast under the ridge and decrease to 5k feet over NV under
troughing. Forecasts suggest freezing levels to decrease across the
north under the flattening ridge to ~8k feet  while remaining
relatively high (>13k feet) across the south into the weekend.


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



CH

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