520
AGUS76 KRSA 181315
HMDRSA

Hydrometeorological Discussion
National Weather Service / California Nevada RFC / Sacramento CA
615 AM PDT Fri Oct 18 2024

...TURNING MAINLY DRY...
...SYSTEM DRAGGING ACROSS SW OR AND NW CA LATE SUN/EARLY MON...

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

The s/wv trof that moved from northwest to southeast across the
region is exiting to the east and slowly settling into an upr low
near the 4-Corners. Much of the precip associated with this feature
is downstream of the area with a solid line of convection moving
across southeast UT back toward central AZ this morning. In its
wake...dry northerly flow is in place across CA and NV with PW
values less than 0.50-inch. In fact...the KREV 18/12Z RAOB indicated
a paltry 0.18-inch PW.

Through the weekend...expect the upr low to remain in the vicinity
of the 4-Corners...while heights begin to rise across the west
coast. Into early next week...a series of weak disturbances will
make their way toward the Pacific Northwest with the deepest
dragging a cold front across southwest OR and northwest CA with
light precip late Sunday into early Monday. Best totals will fall
across the Smith River basin with approx 0.25- to 0.75-inch...but
quickly trailing off to the south and east...which will leave the
majority of the area dry.

High pressure will once again develop across the west coast by the
middle of the upcoming week. Offshore an area of low pressure will
cutoff from the general flow aloft and spin across the eastern
Pacific until finally getting ejected toward the northeast beyond
the forecast period. This feature may bring the next opportunity for
precip across the west coast.



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



Kozlowski

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