In the San Francisco Bay Area, we have a Mediterranean climate which I believe exists in only five places in the world. Water is very important to us, since that finite potable resource is competed for by the fishing industry, home owners, Central Valley farmers, the Delta, etc. Our Mediterranean climate in part means that we get that water during our winter months, not the warm months. The main storehouse is snow in the Sierra Mountain Range and we are just entering what we hope to be a wet winter with lots of snow to melt in the spring and summer, filling our reservoirs.
What controls the difference between wet and dry years? To a large degree, the Pacific Ocean. Even more specifically, conditions of the Pacific water warmth called La Niña and El Niño.
Our economy relies on it, our politics rely on it, we all rely on it. We need rain. Last year was dry!