Abstract: This paper introduces a new method of the theoretical modeling and simulation of the ionospheric storm behaviour in mid-latitudes, with the use of the experimental ionospheric data. The effects of the atom-molecule ratio, topside fluxes and neutral winds on the ionospheric structure are discssed for the two very different storm events. It is found that, neutral winds vary shadily during the events, while the relativer importance of the ratio is distinct in each event, and the fiuxes differ also. There suggest that the ionosp heric behavioar in the storm time has many dependencies, which can only be determined by the concrete solar-geophysical and atmosphyeric background conditions.