Area Forecast Discussion
Issued by NWS Sacramento, CA
Issued by NWS Sacramento, CA
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. && $$