Hydrometeorological Discussion
Issued by NWS California-Nevada RFC

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AGUS76 KRSA 151421
HMDRSA

Hydrometeorological Discussion
National Weather Service / California Nevada RFC / Sacramento CA
720 AM PDT Mon Jul 15 2024

...AFTN/EVE SCATTERED SHOWERS AND T-STORMS OVER SRN CA, THE SIERRA,
AND NV FOR MUCH OF THE WEEK...
...NEAR NORMAL TEMPS THROUGH MID-WEEK BEFORE GRADUAL WARMING RETURNS
TEMPS ABOVE NORMAL LATE WEEK INTO THE WEEKEND...

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

A large area of high pressure currently resides over the Four
Corners with ridging across much of the western U.S. Additionally, a
trough is situated just offshore of nrn/cntrl CA. The current
pattern has allowed mid-level moisture to move into the area the
past few days with TPW imagery showing 0.75" to over 1" PW of
moisture over srn CA and NV. Today`s 12z sounding out of San Diego
(NKX) shows 1.48" PW. LSRs reported a couple of flash floods
yesterday as the area experienced scattered showers/thunderstorms
thanks to mid-level moisture and instability. Observations recorded
amounts around 0.10" to just under 0.75". Today, shower/thunderstorm
chances over the higher terrain of much of CA as far north as srn OR
as models have the moisture/instability drifting across more of the
region, showers/t-storms possible across most of NV as well. These
chances will pull south and east throughout the week as the moisture
retreats some with the best chances for srn CA, across the Sierra,
and over eastern NV.

Temperatures look to sit closer to seasonal normals through mid-week
as the center of the large area of high pressure remains over the
Four Corners and a series of troughs move into the PacNW. Towards
the end of the week, high pressure will creep back westward
gradually raising temperatures back up above normal for most areas
by Friday (near to 10 deg F above normal) and 5 to 15 deg F above
normal over the weekend away from the immediate coast.


Please Note: This product may NOT be routinely updated Friday
through Sunday between Jun 1 and Oct 1. Please refer to
www.cnrfc.noaa.gov/dailyBriefing.php for a graphical summary of
weather and hydrologic conditions.

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



AS

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