The Nigerian Meteorological Agency (NiMet) has alerted residents of Lagos and other coastal states to a heightened risk of flash flooding on Tuesday, June 30, following forecasts of widespread rainfall across southern Nigeria.

The warning was contained in NiMet’s Tuesday Weather Outlook for June 30, 2026, which forecast sustained rainfall across the southern region throughout the day.

According to the agency, continuous rainfall could trigger flash flooding in coastal and low-lying communities, particularly in Lagos and other states along Nigeria’s southern coastline.

The forecast also outlined expected weather conditions across the northern and North Central regions while advising residents and key sectors to take precautionary measures.