The Kenya Meteorological Department has issued a Heavy Rainfall Advisory (No. 01/2026, Update One) warning of intensified rainfall in several parts of the country from February 21 to February 25, 2026.
The advisory indicates that the ongoing rains currently being experienced over the Lake Victoria Basin, the Rift Valley, and the Highlands East and West of the Rift Valley — including Nairobi — are expected to intensify beginning Friday afternoon.
Rainfall Projections
According to the department, rainfall amounts are expected to exceed:
- 20 millimetres within 24 hours on February 21
- 30 millimetres within 24 hours on February 22, 23 and 24
The heavy rains are also likely to spread to the South-eastern Lowlands and the Coastal region, particularly the South Coast. A reduction in rainfall intensity is projected from February 25.
The advisory categorizes the event as moderate to heavy rainfall, with a moderate probability of occurrence (33%–66% chance).
Counties on Alert
Counties expected to be affected include:
Migori, Nyamira, Bungoma, Kakamega, Embu, Murang’a, Nyeri, Tharaka-Nithi, Kisii, Narok, Kajiado, Makueni, Machakos, Nairobi, Kericho, Bomet, Taita Taveta, Kitui, Kwale, Mombasa, southern Tana River, and parts of Kilifi.
Public Advisory
Residents in the listed counties have been urged to remain vigilant for potential flooding, particularly in low-lying areas and downstream regions where floodwaters may accumulate even if heavy rainfall is not directly experienced.
The department has cautioned motorists and pedestrians against driving or walking through moving water or flooded areas, warning that such conditions can quickly become dangerous.
Updates will be provided should there be any changes in the forecast.
The advisory has been shared with national and county government agencies, disaster response units and relevant authorities to support preparedness and response measures.
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