Following recent heavy rainfall and deadly flash floods in Nairobi, the Kenya Meteorological Department clarified that rainfall measurements in millimetres are a precise calculation of water volume per square metre.

• 20mm of rainfall exactly equals 20 litres of water per square metre.
• The Kenya Meteorological Department issued a statement to explain the unusual intensity of the downpour.
• Reporting rainfall in millimetres, such as 160mm, directly indicates litres per square metre, highlighting the significant volume of water received.