FXUS66 KSTO 021945
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
1245 PM PDT Fri May 2 2025

For additional details on weather and expected impacts over the
next 7 days, please visit weather.gov/sto/briefing.

.Discussion...

.Synopsis...
Cooling trend begins today with coolest temperatures on Saturday.
Light mountain and foothill rain tonight through Saturday. Gusty 
north winds on Sunday and Monday, with a Wind Advisory issued for
the Delta and Sacramento Valley from 8am Sunday to 8pm Monday. Dry
and warm conditions next week.

&&

.Key Messages...

* Today and Saturday:
    -Cooling trend starts with chances of light showers in the 
     mountains, foothills, and northern Sacramento Valley.
    -Light precipitation chances on both days with most areas
     seeing less than a tenth of an inch over 48 hours. 
	-Slight (15-25%) chance for isolated afternoon/evening
     thunderstorms, best chances in the mountains

* Sunday and Monday:
	-Mostly dry with gusty north winds. 
		-Probability of gusts over 40 mph in the Sac Valley and Delta: 55-95%
		-Strongest gusts along and west of I-5
	-Warmer temperatures than Saturday.
 
* Early Next Week:
	-Slightly warmer than normal temperatures and dry.
  
.Changes from previous forecast...

* Wind Advisory issued for the Delta and Sacramento Valley from
  8am Sunday to 8pm Monday

&&

.AVIATION...
VFR conditions expected over the next 24 hours across interior 
NorCal. Breezy southerly wind gusts up to 15-20 kts across the 
Sacramento Valley, west to northwest gusts up to 20 kts over the 
northern San Joaquin Valley, and southwest gusts up to 20-25 kts 
over the Sierra until 06z Saturday. Southwesterly wind gusts up to
20 kts vicinity Delta. Gusty north to east wind gusts up to 30-40
kts develop after 06z-12z Saturday, strongest over the Sacramento
Valley and mountains. There is a 10-30% chance of isolated 
thunderstorms over the mountains until 03z Saturday and again from
18z Saturday-03z Sunday, with brief periods of MVFR conditions. 
Gusty and erratic winds near thunderstorms.

&&

.STO WATCHES/WARNINGS/ADVISORIES...
Wind Advisory from 8 AM Sunday to 8 PM PDT Monday for Carquinez 
Strait and Delta-Central Sacramento Valley-Northern Sacramento 
Valley-Southern Sacramento Valley.

&&

$$