Death toll climbs to at least 181 ; thousands left homeless . Mayor : Record - breaking 11 inches ( 280 mm ) of rain fell in Rio Tuesday . People could be trapped in another mudslide , Brazilian media reported .
Death toll climbs to at least 181 ; thousands left homeless . Mayor : Record-breaking 11.3 inches ( 288 millimeters ) of rain fell in Rio Tuesday . 200 could be trapped following another mudslide , Brazilian media report .