Heavy rainfall of more than 50mm in 24 hours is likely to occur from Thursday in some counties within Western, Rift Valley, Nyanza, and Central including Nairobi area and Southeastern lowlands.
This is according to an announcement from the Kenya Meteorological Department which has However stated that this will not be the proper onset of the March-May rainfall season.
The heavy rainfall is likely to continue on Friday and Saturday over counties in the South Coast, Western, Nyanza, Rift valley, Northern, Central including Nairobi and Southeastern lowlands.
The Weatherman noted that the rains will reduce in intensity over the Eastern, Coast and Northern regions but moderate rainfall will continue over the rest of the country.
Counties to be affected by the heavy rainfall include: Kisii, Kericho, Bomet, Narok, Migori, Kakamega, Kajiado, Nakuru, Kwale, Marsabit, Turkana, Samburu, Nairobi, Nyeri, Kiambu, Muranga, Kitui, Machakos, Makueni and TaitaTaveta.
An increase in rainfall is expected over various parts of the country from Wednesday.
Residents in urban areas have been advised to be on the lookout for flash floods.
In dry river beds moving water may suddenly appear while soil erosion may occur in areas that have been dry and have bare soils.