At the time of the SN1987A the cryogenic resonant gravitational wave detec
tors were not ready yet, still in the construction phase. However in Rome the room-temperature resonant detector GEOGRAV, intended to detect signals correlated with the Earth movements, was in operation... On the next day, since GEOGRAV was in operation in the best possible noise condition, although this detector was not sensitive enough for a possible g.w. according to classical estimation of the cross-section, we carefully studied the data and found a correlation with the five-neutrino burst, with the g.w. signals anticipating the neutrino signals by 1.4 seconds.