A red alert was declared in 8 districts of Kerala on Thursday by the India Meteorological Department (IMD) as rains continued to lash various parts of the state and disrupted the day-to-day lives of the people as roads got flooded or caved in and many got displaced from their homes to relief camps.

IMD issued a red alert for the day in the districts of Pathanamthitta, Alappuzha, Kottayam, Ernakulam, Idukki, Thrissur, and Palakkad and Kannur and an Orange alert in the remaining districts except for Thiruvananthapuram where a Yellow alert is in place.

A red alert indicates heavy to extremely heavy rains of over 20 cm in 24 hours, while an orange alert means very heavy rains of 6 cm to 20 cm. A yellow alert means heavy rainfall between 6 and 11 cm.

The inclement weather in the state resulted in water levels of various rivers -- like Pampa, Manimala, and Achankovil -- in the Pathanamthitta district rising close to or crossing danger levels.

Anticipating landslides and floods, several families were relocated to relief camps, district officials said.

The roof of an Anganwadi building collapsed in Konni taluk of Pathanamthitta district, officials said and added that there were no casualties.

The water in some major dams and reservoirs of the state is also rising with the water in Idukki reservoir reaching blue alert storage levels and in Ponmudi dam, in Idukki district, it has reached red alert storage level.

Meanwhile, six shutters of the Malankara dam in Idukki were opened by 100 cm at 6 AM, officials of the district said.

The water level in the Mullaperiyar dam was at 135.35 feet at 11 AM, according to Idukki district officials.

Besides Pathanamthitta and Idukki, the districts of Kottayam, Thrissur, and Kozhikode too witnessed heavy rainfall.

In Thrissur, the fourth shutter of the Peringalkuthu dam was opened leading to rising in the water level of the Chalakkudi river to dangerous levels prompting the district officials to ask people living on its banks to evacuate immediately.

Even the shutters of Chimmini dam are expected to be raised further in view of the heavy rains in Thrissur district and as a result, the water in Kurumali river there which is already above warning levels is expected to rise further, officials said.

In Kozhikode, the bad weather led to five flights from the Middle East which were bound to Calicut Airport being diverted to Cochin International Airport.

Air Arabia flights from Sharjah and Abu Dhabi, Gulf Air flights from Bahrain, Air India Express flights from Abu Dhabi and Qatar Airways flights from Doha were diverted to Cochin, the Cochin International Airport Ltd (CIAL) said.

In Kottayam, the Meenachil river overflowed leading to flooding of some roads.

In some other parts of the state, TV channels showed visuals of roads that had cracked or caved as a result of the rains.

A holiday was declared for schools and educational institutions in various districts of the state a day ago in view of the rains, but in Ernakulam the announcement was made only after 8 AM on Thursday, leading to many students turning up in schools and then having to be sent back home.

It led to widespread criticism of the Ernakulam District Collector on social media.

Meanwhile, the Central Meteorological Department has predicted widespread rains in Kerala from August 4 to 8.

Landslides and flash floods in Kerala triggered by heavy rains killed 18 people in the last few days, damaged hundreds of properties, and displaced thousands to relief camps, the state government said on Wednesday.

(Inputs from PTI)