Kenya Red Cross Secretary-General Ahmed Idris said search and rescue teams were working tirelessly to assist those stranded.
"We are severely limited by the traffic and the situation on what used to be roads. We are doing our best to reach those in need," he wrote on X.
Public Service Minister Geoffrey Ruku said he was coordinating national disaster preparedness, response, and recovery efforts. He urged Kenyans to be cautious and prioritize their safety.
Some residents blamed the flooding on clogged drainage systems, stating that city authorities ought to have prepared by ensuring there was functional drainage infrastructure ahead of the rainy season.
One resident, Aisha Bajaber, wrote on X: "The whole city is flooded yet again. How long will officials keep ignoring the lack of drainage?"