Dozens of people are missing, and rescue operations are under progress.
Heavy rain and hailstorms have severely damaged the nation, causing flooding to spread quickly in several areas.
Carlós Mazón, the president of the Valencia region, stated that it was “impossible” to estimate the final death toll at this time.
Social media users have shared footage of floodwaters spreading mayhem, tearing down bridges, and pulling automobiles through the streets. People appeared to be clinging to trees in order to prevent being carried away in other videos.
Chiva, in the Valencia region, received 491 mm of rain in just eight hours, according to the Spanish Weather Service.
As rescue personnel find it difficult to reach some places, radio and television stations have allegedly been receiving hundreds of pleas for assistance from those who are stuck in flooded areas or looking for loved ones.
In the severely damaged municipality of Letur, emergency personnel are employing drones to look for the missing, local administrator Milagros Tolon told a Spanish public television station.