FXUS66 KSTO 032123

AFDSTO



Area Forecast Discussion

National Weather Service Sacramento CA

223 PM PDT Thu Jul 3 2025



.DISCUSSION...



.SYNOPSIS...

15-20% chance for Shasta County mountain thunderstorms through 

tonight. Onshore flow will bring cooler, below normal 

temperatures with locally breezy winds for Friday(Independence 

Day). Dry weather is expected for Friday. A slow warming trend 

continues over the weekend into next week.



&&



.KEY MESSAGES...



* Thursday evening and night

 - Slight (10-20%) probability of  showers and thunderstorms 

   through early across the mountains of northern Shasta County

 

* Friday(Independence Day) and Weekend:

 - Quiet, dry weather 

 - Onshore winds will cool temperatures to below average Friday

 - Winds will be locally breezy at times, strongest through the 

   Delta and over the higher elevations 

 - Slow warming over the weekend into early next week, with

   continued dry conditions



.Changes from previous forecast...

 - Slightly lower potential for showers and thunderstorms 

   tonight.

  &&



.AVIATION...

Mainly VFR conditions over interior NorCal next 24 hours. Breezy 

onshore winds expected today with gusts up to 20-25 kts in the 

Valley and up to 30 kts in the Delta. Potential for brief MVFR/IFR

conditions from isolated showers and thunderstorms over the 

northern Shasta County mountains and Southern Cascades late this 

afternoon until 06z Thursday. 



&&



.STO WATCHES/WARNINGS/ADVISORIES...

None.

&&



$$