April storms have demonstrated in practice what catastrophe planners have long modeled in theory: the Bay Area's ferry-dependent infrastructure carries concentrated waterfront exposure that compounds under sustained weather events rather than isolated ones. BART and bus systems absorbed overflow demand during this month's suspensions, but capacity margins are tight. Emergency planners are now tracking El Nino progression closely, with particular concern for terminal flooding along the Oakland Estuary corridor and the resilience of neighborhood nodes that depend on terminals remaining operational. The question heading into summer is not whether the system can survive a single storm, but whether it can absorb weeks of them.