Atmospheric Rivers: Understanding Our New Weather Reality

Did you know that "rivers in the sky" deliver 30-50% of California's annual water supply in just a handful of storms? With 51 atmospheric rivers hitting our coast last year alone—more than double the historical average—these weather phenomena are no longer occasional visitors but regular features of life in San Mateo County.

Join SMC EM Assistant Director Ryan Reynolds, a geologist with expertise in climatology, meteorology, and natural hazards, for an essential masterclass on atmospheric rivers. You'll learn:

• What atmospheric rivers really are and what they aren't
• How to read the AR category scale (1-5) and what each level means for you
• Why timing matters: the difference between beneficial early-season ARs and dangerous late-winter events
• How cutting-edge technology, including our coastal radar systems, is revolutionizing AR forecasting
• Practical preparedness steps for your family and property

This is your opportunity to go beyond the weather headlines and truly understand the science, impacts, and future of atmospheric rivers in our region. Come with your questions—this is your chance to learn everything you've ever wanted to know about ARs from an expert who's on the front lines of keeping our county safe.