Seasonal temperatures expected to continue through next week. There is the potential for thunderstorms Sunday and Monday for portions of interior NorCal. At this point, the best chance for thunderstorms is over the mountains and foothills with a slight chance in the mountains, mainly Sunday evening through Monday afternoon. Any lightning strikes could have the potential to cause new fire starts. Timing and location could change, so keep an eye out for forecast updates.
The low pressure area off the coast weakens its influence a little today as it lifts towards the northeast. This along with a weaker Delta breeze during the day will bring slight warming over yesterdays highs. Moderate Delta breeze is expected to continue into the weekend each night but will be a little weaker during day than compared to the last several days.
Currently the Delta breeze is fairly strong and the marine layer along the coast is around 1600 to 2000 feet deep. A few low clouds may advect into the Sacramento area this morning as a result.
High pressure centered around the four corners area will strengthen and build a little westward Saturday and Sunday to bring a warming trend with temperatures becoming a little above seasonal normals over the weekend and persisting into the first part of next week.
Monsoonal moisture starts to work its way northward Sunday night along the crest but looks to hold off on any potential shower/thunderstorm activity until Monday. There are hints in the models that the moisture may spread to the coastal range Monday afternoon but currently the NBM is not indicating this so have just put in some ghost pops for now. We will have to monitor for possible updates on the aerial coverage of possible shower/thunderstorm activity.
Extended Discussion (Tuesday through Friday)
Low pressure off the coast will help to keep most of the monsoonal activity Tuesday through Thursday south and east of the area. Cluster analysis keeps a trough over the Pacific so temperatures should remain well within what you would expect for July. Delta breeze looks to continue throughout this period to help moderate some of the inland temperatures.