The balance of kinetic energy is studied for the transient disturbances connected with the mesoscale system in a heavy rainfall area. Area time analysis results indicate that the cross isobaric generation

horizontal transport of eddy kinetic energy

and energy conversion from the area mean kinetic energy to eddy kinetic energy are main energy sources

which have great contribution to the development of the mesoscale disturbances. The eddy dissipation obtained as the residual term of eddy kinetic energy equation shows negative values in the whole layer

being considered as a main energy sink. Among those source terms

eddy generation term appears to be the major one

in which the baroclinic conversion has a great contribution. The mesoscale disturbance in the heavy rain fall area is considered having strong baroclinic characteristic. More conversions of energy occured between basic flow and eddy flow are found in the upper and lower layer troposphere. Eddy flow transfers energy to the basic flow in the lower layer

and gains energy from the basic flow in the upper layer. A possible interaction process among different scale motions in the heavy rain fall area is given.