The cut-off low that’s been rotating off the San Fransisco coast the last few days will push further north bringing a chance for thunderstorms for west side valleys. Thunderstorm activity will increase through the evening with isolated storms for west side valleys and scattered storms from the Cascades east and in northern California. Tomorrow will be the peak of the moisture and instability as the low moves over the viewing area. This will bring numerous thunderstorms along and east of the Cascades and to northern California with scattered storms west of the Cascades and even the potential for isolated storms to the coast!
Storms tomorrow will have the most available moisture and instability meaning storms can produce heavy rain, large hail, and of course gusty winds and abundant lightning. A Red Flag Warning is in effect through tomorrow evening for all inland areas to account for this fire weather threat of lightning and the dry fuels present in our area. Be prepared for conditions to change quickly in the afternoons and be able to get to a safe location quickly.
A kicker trough will move in over the weekend keeping temperatures on the cooler-side and also bringing the potential for mountains thunderstorms late Saturday and Sunday. Most of the viewing area will see a pleasant weekend, but if you’re headed up to the high country be prepared for isolated storms in the late afternoon hours.
Thanks for logging on and have a great Wednesday!