The newest general circulation models (GCMs) with coupled systems of atmospheric and ocean circulation (coupled GCMs) offer output of monthly data for 46 climatic elements at the Canadian GCM CCC M1/M2 (1997/2000) and for 59 elements at the U.S. GCM GISS (1998). From this offer we have calculated the regional scenarios of selected 11 elements change for the Slovakia centre and for Hurbanovo. Such scenarios can be used directly for hydrological applications. Our aim was to prepare scenarios also as time series for several elements by the method not affecting seriously the original physical plausibility among elements existing in the GCMs output. Calculation of extreme daily and several-day precipitation based on GCMs output, physical equations and synoptic analysis of data in the reference period was the next step of climatic scenarios design. These scenarios indicate increase in extreme precipitation causing flash floods by 20-50 % and also increase in "dry” periods with low precipitation. The Kysuca and Hron river basins were the control areas for hydrological testing of extreme precipitation scenarios.