Moisture lingering over the region will cause about a 10 to 25 percent chance for thunderstorms over the crests of the Sierra Nevada Sunday. Warming temperatures may enhance lifting over the mountains. Lightning, small hail, gusty and erratic winds, and localized heavy rainfall are all possible in developed storms.

A low pressure system, currently off the California coast, is anticipated to move into central California early this upcoming week. However, there is some uncertainty still on timing and location of the system, and as a result, how much precipitation will be associated with it. For now though, there is around a 10 to 30 percent chance for one quarter of an inch of rainfall across central California in the 24 hour period ending 5 PM PDT Wednesday.

Temperatures over the next week are expected near average, with afternoon highs hovering around 90 degrees in the San Joaquin Valley.