In Valencia, police officers with megaphones urged people to return home when the first raindrops fell on Sunday evening, according to a journalist from AFP. Spain's Meteorological Institute Aemet has issued a red warning, the highest level, and warns that up to 90 millimeters of rain could fall within an hour.
In connection with the country's royal couple and prime minister visiting Paiporta on Sunday, members of the royal family were hit in the face with mud, and Queen Letizia was seen trying to wipe away the mud that had stuck.
Security personnel decided on evacuation, and both the prime minister and the royal couple were taken away from the city center where they were to show sympathy with the flood victims.
The royal couple, Sánchez, and Valencia's regional leader Carlos Mazón were met with insults, and mud and objects were thrown at them during Sunday's visit to the city.
Shouted "murderers"
The residents believe that the help is not sufficient and has taken too long.
Murderers, murderers, shouted some of the affected, according to El Mundo, while others demanded the regional leader's resignation.
Riding police had to intervene several times to protect the delegation from the crowd.
Queen Letizia and Sánchez cut short the visit, while King Felipe VI and Carlos Mazón first tried to calm down the situation without success.
Condemns violence
"People threw mud pies and other objects. At that moment, the government's entourage chose to activate a security protocol and take (the prime minister and the royal couple) to a checkpoint," the prime minister's office said in a statement.
No one in the delegation was injured, reports the newspaper El País.
After the incident, Prime Minister Sánchez says that although he sympathizes with the suffering of the affected, "all forms of violence" are unacceptable.
King Felipe VI urges Spain to "understand the anger and frustration" of people affected by the floods.
The royal couple was also scheduled to visit the affected city of Chiva, but the visit has been postponed, announced the Spanish court.
Over 200 people have died in the disaster.
Corrected: In an earlier version of the text, there was an incorrect description of Almería's geographical location, as well as an incorrect image caption.