465
AGUS76 KRSA 131325
HMDRSA

Hydrometeorological Discussion
National Weather Service / California-Nevada RFC / Sacramento CA
625 AM PDT Thu Aug 13 2026

...BEST CHANCE SCATTERED SHOWERS/T-STORMS TODAY THEN DECREASING...
...COOLER THAN AVERAGE TEMPERATURES THROUGH THE PERIOD...

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

Radar imagery this morning shows a cluster of showers and embedded
thunderstorms moving across northern NV with the best activity
primarily along I-80 from Lovelock to Winnemucca. Precip gauges over
the past 6-hours show several gauges between a few hundredths of an
inch and 0.10-inch...except for KLOL that saw 0.47-inch ending at
13/13Z. This is all associated with a disturbance moving through the
southwest flow aloft now located over northeast NV.

A secondary mid-level disturbance is located near the central CA
coast and will make its way toward the northeast today...traversing
central CA on its way toward northern NV. This should bring another
round of scattered showers and thunderstorms primarily impacting the
central/southern Sierra along with much of NV. Best precip totals
are currently anticipated over the central portion of NV along the
US-50 corridor...where areal averaged amounts will range from 0.25-
to 0.50-inch.

The general troffing along the west coast will begin to weaken a bit
tomorrow before a s/wv trof dropping southward along 140W digs a
broad trof farther offshore between 140W and 130W for the weekend.
Available moisture over the region will also erode under this drier
southwest flow aloft. Best chance of precip on Friday will be
eastern NV before the opportunity for precip really diminishes this
weekend into early next week.

Temperatures will continue to run below average through the period
with anomalies of minus 5- to locally minus 20-degF bottoming out
either Friday or Saturday. Then there will be some moderation of the
temperatures upward into early next week.

Freezing levels are currently running from 13500- to 15000-feet
across the region from northwest to southeast...fluctuating little
through Saturday...before seeing an increase into early next week.
This increase will be especially true over southern CA and southern
NV. By Tuesday...look for freezing levels to range from 14000- to
17500-feet.


Please Note: This product may NOT be routinely updated.
Please refer to the following product issued by the CNRFC
www.cnrfc.noaa.gov/Daily-Briefing for a graphical summary of
weather and hydrologic conditions.

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



DRK

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