Showers and thunderstorms popped up over the mountains and foothills of northern California Thursday, and a few sneaked into the north valley, too. Friday will be quieter, with isolated activity.
It's an active weather day for northern California with showers and thunderstorms over the Sierra and eastward, and the valley will have a chance of unsettled weather this evening. Friday will be a little quieter than Thursday. Some of the showers and thunderstorms will deliver heavy rain to areas of Modoc, Lassen and Plumas counties, and a Flood Watch is in effect through late this evening due to excessive rain. Showers and thunderstorms are also possible this evening in the valley, but they'll be gone before midnight. Lows will be in the 40s and 50s. Friday will be mostly sunny and warm in the valley with isolated showers and thunderstorms in the mountains. Highs will remain in the seasonable mountain 60s and valley 80s.
A large trough of low pressure continues to sit over northern California, and that will bring renewed chances of showers and thunderstorms through the Memorial Day weekend. Most of the showers and thunderstorms will occur over the mountains from Saturday through Monday, but a few will find their way into the valley and foothills. Keep an eye to the sky if you have outdoor plans this holiday weekend, and seek shelter from any heavy rain or dangerous lightning. The unsettled weather pattern will continue next week, with more isolated showers and thunderstorms. It won't rain all day any of the next 7 days, but there will be a chance each afternoon. We will stay in the seasonable 80s in the valley, instead of the hot 90s or 100s.
