Nigeria to experience thunderstorms and rainfall as NiMet issues fresh nationwide weather update. What NiMet Says Could HappenThe agency said flash floods were most likely to strike low-lying areas, flood-prone communities, urban centres and riverside settlements. NiMet also cautioned that heavy rainfall would reduce visibility on roads and could affect aviation operations. People living in areas at high risk were told to stay alert and be ready to relocate to safer ground if conditions deteriorate. NiMet forecasts nationwide thunderstorms, rainfall alertIn a related development, Legit.ng reported that the Nigerian Meteorological Agency (NiMet) forecast a three-day mix of thunderstorms, rain, hazy skies, and sunshine across various parts of Nigeria.