The Nigerian Meteorological Agency has alerted residents of Lagos, Ogun and 25 other states to the likelihood of flash flooding as heavy rains intensify across the country.
In its latest weather advisory covering July 1 to 10, the agency said the peak of the rainy season, combined with already saturated soil from weeks of rainfall, has significantly increased the chances of flooding, especially in urban centres, coastal communities and other low lying areas.
“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 Sunday statement read.
The states expected to face the highest risk 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 flooding could disrupt daily activities by damaging roads, bridges and drainage systems, while also causing severe traffic congestion and interruptions to transport services.
The agency said the expected rainfall could “trigger localized flooding, resulting in traffic gridlock, road closures and disruptions to transportation.”
It also warned that “temporary power and telecommunications outages may occur in affected areas, while poor visibility during intense rainfall could pose risks to motorists and aviation operations.”
The forecast further indicated that excessive rainfall could leave farmlands submerged, threaten crop production and increase the risk of waterborne diseases due to stagnant floodwater.
To reduce the impact of the expected floods, the agency urged residents to: “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.
“Also, it said it should secure loose outdoor objects and reinforce vulnerable structures; and avoid walking or driving through floodwaters.”
NiMet also called on emergency management agencies and community leaders to strengthen their response plans.
It stated, “SEMAs, NEMA, community leaders, and relevant stakeholders should strengthen preparedness and response measures.”
The agency added that acting ahead of time remains the best way to minimise the impact of flooding.
“Early preparedness and timely action remain essential in reducing the impacts of flash flooding,” it added.
The agency concluded, “An informed community is a prepared community. Know the risks and Act Early.”