The Nigerian Meteorological Agency (NiMet) has warned residents of Lagos and other coastal states to prepare for possible flash flooding as heavy rainfall is expected across southern Nigeria on Tuesday.
Gatekeepers News reports that the alert was contained in the agency’s Weather Outlook for June 30, 2026, which forecast sustained rainfall across the southern region throughout the day.
According to NiMet, continuous rainfall could trigger flash flooding in coastal and low-lying communities, particularly in Lagos and other states along Nigeria’s southern coastline.
The weather agency also issued forecasts for the northern and North Central regions, urging residents and critical sectors to take necessary precautions against severe weather conditions.
For the southern region, NiMet predicted morning thunderstorms accompanied by light rainfall in parts of Ondo, Ogun, Edo, Lagos, Rivers, Delta, Bayelsa, Cross River and Akwa Ibom states.
The agency said rainfall is expected to intensify later in the day, with moderate rainfall forecast across the entire southern region and an increased risk of flooding in coastal areas.
“Southern States: Wet Morning, Heavy Rain Later. Morning: Thunderstorms accompanied by light rainfall are expected over parts of Ondo, Ogun, Edo, Lagos, Rivers, Delta, Bayelsa, Cross River, and Akwa Ibom States.”
“Afternoon/Evening: Moderate rainfall is expected across the entire Southern region, with a high likelihood of flash flooding in coastal areas, especially Ogun, Ondo, Lagos, Rivers, Bayelsa, Delta, Cross River, and Akwa Ibom States.”
In the northern region, NiMet forecast morning thunderstorms with moderate rainfall over parts of Borno, Adamawa and Taraba states. It added that thunderstorms are expected to spread later in the day to parts of Bauchi, Kano, Jigawa, Katsina, Zamfara, Kaduna, Sokoto, Yobe, Gombe and Kebbi states.
For the North Central region, the agency predicted predominantly cloudy conditions in the morning, with chances of thunderstorms and light rainfall over parts of the Federal Capital Territory, Nasarawa and Benue states. Moderate rainfall is expected across the region during the afternoon and evening.
NiMet urged residents in affected areas to remain vigilant as rainfall intensifies, warning that strong winds may precede thunderstorms.
The agency advised motorists to drive cautiously during heavy rainfall and periods of poor visibility. It also warned residents against driving or walking through floodwaters and cautioned people not to seek shelter under tall trees during thunderstorms because of the risk of lightning strikes.
For the aviation sector, NiMet advised airline operators to obtain airport-specific weather reports to support safe and efficient flight operations.
The agency said strict adherence to the recommended safety measures would help minimise risks associated with severe weather conditions.
