I have noticed the past 2-3 months in northern California that it has become increasingly difficult to find tomatoes, specifically, cherry/grape/cocktail tomatoes like Zimas, Constellations, etc. from NatureSweet and other competing brands. I have not seen much press about this issue...am I experiencing a regional anomaly, or are other parts of the USA also seeing tomato shortages?

I'm guessing this has to do with weather patterns in Mexico and south Florida where most of the winter crop is grown, but again I have not seen much press on the topic.