The Nigerian Meteorological Agency has warned that 27 states, including Lagos and Ogun, face an increased risk of flash flooding during the first ten days of July due to persistent rainfall and saturated soil conditions.
In an advisory covering July 1 to July 10, the agency said the country is entering the peak of the rainy season, with widespread rainfall expected to heighten the likelihood of flooding, particularly in low-lying, coastal, urban and poorly drained areas.
NiMet explained that continuous rainfall recorded across many parts of the country in June has left the ground unable to absorb additional precipitation.
“Following widespread rainfall recorded across many parts of Nigeria in June, soils have become heavily saturated, reducing their ability to absorb additional rainfall. As July marks the beginning of the peak rainy season, the risk of flash flooding is expected to increase, particularly in low-lying, urban, coastal and poorly drained areas,” the agency said.
According to the weather agency, the states likely to experience flash flooding include Taraba, Sokoto, Borno, Zamfara, Kebbi, Katsina, Kaduna, Nasarawa, Plateau, Adamawa, Kwara, Kogi, Oyo, Ogun, Lagos, Osun, Ekiti, Delta, Edo, Abia, Imo, Anambra, Enugu, Akwa Ibom, Cross River, Rivers and Bayelsa.
NiMet warned that the anticipated heavy rainfall could disrupt transportation, damage infrastructure, affect agriculture and pose health risks.
“Heavy rainfall may trigger localized flooding, resulting in traffic gridlock, road closures and disruptions to transportation. Temporary power and telecommunications outages may also occur, while poor visibility during intense rainfall could pose risks to motorists and aviation operations,” the agency stated.
It further noted that flooding could waterlog farmlands, destroy crops and damage roads, bridges, drainage systems and other public infrastructure.
The agency also cautioned health authorities to prepare for an increased risk of waterborne diseases associated with stagnant floodwaters and poor sanitation.
To reduce the impact of the expected flooding, NiMet urged residents to monitor weather updates, clear blocked drains and waterways, secure loose outdoor objects and avoid walking or driving through flooded areas.
“Follow weather forecasts and flash flood advisories issued by NiMet. Keep drains, gutters and waterways free of refuse to ensure the free flow of water. Secure loose outdoor objects, reinforce vulnerable structures and avoid walking or driving through floodwaters,” the agency advised.
NiMet also called on State Emergency Management Agencies, the National Emergency Management Agency, community leaders and other relevant stakeholders to strengthen preparedness and emergency response efforts.
The agency stressed that early planning remains the most effective way to reduce the impact of flash flooding.
“Early preparedness and timely action remain essential in reducing the impacts of flash flooding. An informed community is a prepared community. Know the risks and act early,” it added.
