771
FXUS66 KSTO 161926
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
1226 PM PDT Wed Jul 16 2025

.DISCUSSION...

.SYNOPSIS...
Normal to near normal temperatures the remainder of this week due
to onshore flow, along with dry conditions and periodically breezy
onshore winds. Gradual warm-up over the weekend before another
slight cool down early next week.

&&

.KEY MESSAGES...

*  Today:

 - High temperatures continue to be slightly below normal, with
   highs running around 2 to 7 degrees below what is expected for
   this time of year.
 - Smoke will continue to impact areas in the vicinity of the
   Green Fire, though more southerly winds this evening should
   keep most smoke out of the Valley during the day.
 - Locally breezy northerly flow in the northern/central
   Sacramento Valley and adjacent terrain which may allow smoke
   from the Green Fire into the Valley, mainly in the overnight
   through morning timeframe.
 - Onshore flow and Delta Breeze influence expected through the
   weekend, bringing minor cooling and overnight relief to the
   Delta and adjacent Valley.
- Breezy to gusty southerly winds expected this evening,
      especially in the vicinity of the Delta.
- Probability of gusts 30 mph or greater this evening:
- 10 to 20% in the central and northern Sacramento Valley
- 70 to 95% in the Delta and vicinity

*  Thursday-Monday:

 - Upper level pattern remains largely persistent with broad
   troughing/northwesterly flow across interior NorCal.
 - Near seasonable temperatures continue late in the week,
   increasing slightly over the weekend, before cooling again
   early next week.
 - Periodically breezy onshore flow expected to persist in the
   afternoon and evening late this week, shifting toward terrain
   driven influence during the overnight hours.
 - Persistent and periodic late day wind gusts 20 to 30 mph
   anticipated throughout the Delta and vicinity each day.

.Changes from previous forecast...
 - Minimal changes from the previous forecast.

&&

.AVIATION...


Primarily VFR conditions expected next 24 hours across interior
NorCal. Periodically breezy west-southwest winds to continue as
well, with strongest gusts 20-25 kts through the Delta and
vicinity after 22z, gradually decreasing after 06z. Some patchy
low stratus possible between 06z and 15z at Sacramento area sites
and SCK/MOD, with 10-20% probabilities of MVFR/IFR conditions
developing.

&&

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

$$