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AGUS76 KRSA 191354
HMDRSA

Hydrometeorological Discussion
National Weather Service / California Nevada RFC / Sacramento CA
700 AM PDT Thu Sep 19 2024

...CONTINUED COOLER TEMPERATURES WITH PRECIP AND ISOLATED
THUNDERSTORMS POSSIBLE THROUGH TOMORROW AS A LOW MOVES THROUGH...
...DRY CONDITIONS RETURN BY THE WEEKEND WITH WARMING TEMPERATURES
INTO THE COMING WEEK...

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

An upper low continues to make its way down the CA coastline
currently just offshore of the central coast. Radar and satellite
imagery along with lightning detection show showers and
thunderstorms over Monterey County and eastward into the SJ Valley.
Majority of the precip over the past 24 hrs has fallen across the
Sierra at about 0.10-0.75" with a few stations reporting totals over
an inch. The low will continue its movement along the coast today
reaching Point Conception late this afternoon into the evening. The
presence of the low along with continued moisture/instability will
allow for scattered showers and thunderstorms to persist today,
mainly over the central Sierra and to the south. The low will keep
heading south overnight along the soCal coast before beginning to
move inland by early Friday morning traversing srn CA throughout the
day before entering AZ by the early evening. High pressure will
build into the eastern Pacific behind the low drying out conditions
and beginning to warm temperatures away from srn CA/NV while showers
and thunderstorms remain a possibility near the low.

Today and tomorrow will see continued below normal temperatures by 5
to 10 deg F or so due to the presence of the upper low. Building
high pressure will then gradually bring temperatures up to near
normal over the weekend becoming above normal by 10 deg F or so
Sunday with those warmer temps spreading across the region early
next week. Sunday through the period expect dry conditions and above
normal temperatures. Longer term outlooks in the 6-10 and 8-14 day
time frames suggest more of the same for the rest of September.


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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