660
FXUS66 KSTO 021915
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
1215 PM PDT Tue Jun 2 2026



.KEY MESSAGES...

 -Dry weather, moderate heat risk through Friday. Cooling trend
  starting Saturday down into the 80s to near 90 through early
  next week.

 -Breezy afternoon and evening winds at times through the weekend
  with areas of lower humidities.


&&

.DISCUSSION...

...Wednesday through Friday...
Good agreement in ensemble systems again today. Main story is that
NorCal will be under a shortwave ridge bringing above normal
heights and temperatures a bit above normal for this time of the
year. A closed upper low in the Gulf of Alaska will slowly slide
south during this period increasing west to southwest flow aloft.
This will get the delta breeze going in the afternoon and evening
and also some afternoon and evening breezy conditions at times.
Relative humidities are low but overall Red Flag criteria not
being met long enough or in enough areas for any fire weather
highlights.

...Saturday through Early Next Week...
The pre-mentioned PacNW system slides into the area Saturday and
lingers around into next week. Esemble systems showing little to
no moisture with this trough so look like the main impact will be
cooler temperatures in the 80s and breezing winds at times in the
foothills and mountains. WMR

&&

.AVIATION...

VFR conditions at TAF sites over the next 24 hours. Surface winds
generally at or below 12 kts, except in the Delta vicinity with
west-southwest winds 10 to 15 kts with gusts 20 to 25 kts through
09Z Wednesday, and again after 22Z Wednesday in the Delta and
mountains.

&&

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

$$