027 
FXUS66 KSTO 262139
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
239 PM PDT Fri Apr 26 2019


.SYNOPSIS...

Dry and warm conditions through the weekend. A slight threat of 
showers over the Sierra early next week. Dry with above normal 
temperatures the remainder of the week. 

&&

.DISCUSSION...

The upper ridge continues to break down over the west coast as a weak
wave across the PacNW continues to move east across the CONUS. Dry
and warm conditions continue today with Valley high temperatures reaching
into the mid and upper 80s, with higher elevations reaching into the
60s and 70s. 

Another trough builds into the northwest US this weekend while a 
closed upper low moves towards SoCal. Dry conditions look to persist 
through at least Sunday, before some small chances for showers are 
seen across the Sierra Sunday night and again Monday night as the
aforementioned trough moves east and out of the area. As for
temperatures, the cooling trend looks to continue through early
next week with Valley highs in the low to mid 80s by Monday.
Still, these temperatures continue to be 5 to 10 degrees above
normal.

&&

.EXTENDED DISCUSSION (Tuesday THROUGH Friday)

A short wave disturbance will clip northern CA on Tuesday which
could bring some mountain showers to the region primarily over the
northern Sierra and Shasta and Western Plumas counties. In
addition to this, a broad trough will setup shop over the region.
This will bring cooler weather to the region; however, it'll be
short lived as ridging from the Pacific nudges into California.
This will warm temperatures and bring dry conditions to the region
through the rest of the work week. Weekend ensemble guidance shows
a low developing over the Pacific, but timing and locations is
still a bit shaky. For now, have opted to continue with the dry 
forecast. 

&&

.AVIATION...

VFR conditions are expected for all TAF sites over the next 24
hours.

&&

&&

.STO WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$