733
FXUS66 KSTO 110930
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
230 AM PDT Sat May 11 2024

.SYNOPSIS...
High pressure will bring dry weather with above normal
temperatures into next week resulting in areas of moderate heat
risk.

&&

.DISCUSSION...
There were some cumulus buildups in the Sierra to the south of
Lake Tahoe late Friday afternoon and evening on the backside of
the low centered over southern Nevada. Otherwise, skies remain
clear under high pressure across interior NorCal early this
morning. Offshore/northeast surface pressure gradient has relaxed
a bit further compared to 24 hours ago, but a few gusts in the
15-25 mph range remain over the foothills and mountains. Current
temperatures remain mild and mostly range from the mid 30s to mid
40s in the colder mountain valleys, to the 50s over mountain
ridges, and mainly 60s to around 70 in the Central Valley.

Little change is expected through early next week with high
pressure resulting in dry and warm weather with temperatures
around 10 degrees above average. Warmest temperatures in the
Central Valley will be in the lower to mid 90s resulting in areas
of moderate heat risk.

A weak trough is forecast to move across NorCal on Monday and may
be enough to trigger isolated late day showers and thunderstorms
over the northern Sierra, but otherwise is not expected to have
much impact other than bringing minor cooling to the Delta and
southern Sacramento Valley as the Delta Breeze picks up.

&&

.EXTENDED DISCUSSION (Wednesday THROUGH Saturday)...
EPAC upper ridge extends inland over interior NorCal midweek.
Ridge progged to flatten towards the end of the week as upstream
short wave troughs encounter it. This will result in a cooling
trend, but high temperatures remain above normal through the
extended forecast period with dry weather.

&&

.AVIATION...
VFR conditions over interior NorCal next 24 hrs with sfc wind
mainly below 12 kts.

&&

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

&&

$$