Castellon de la Plana sits on Spain’s Mediterranean coast (or nearby islands), where hot, dry summers give way to the year’s most dangerous weather in autumn, when warm sea-surface temperatures fuel intense, slow-moving storms known locally as gota fria or DANA (an isolated depression at high altitude).
On Spain’s eastern coast north of Valencia, the city shares the same DANA storm exposure that affects the wider Valencian coast. These autumn storms can drop several months’ worth of rain in a single day, as seen repeatedly across eastern and southern Spain in recent decades, which is why radar imagery is central to how Spain’s AEMET meteorological agency issues flash-flood warnings. Learn more: Flash Flood Warning Signs on Radar · Open the full Rain Map