In the very early hours of October 20, 1991 a moderately strong earthquake of magnitude about Mb 6.5 occurred in Uttarkashi region of U.P. Himalayas. Thirteen strong motion accelerographs have been triggered by this eyent. Peak values of acceleration, velocity and displacement as well as response and Fourier spectra were evaluated. Maximum acceleration recorded in a horizontal component was 3040 mm/s’s and in vertical direction was 2888 /s’s. Attenuation of observed acceleration is reasonably predicted by McGuire’s relationship (McGuire, 1978). The normalized shape of spectra indicates higher values in the short period range as compared to USNRC spectra (WASH-1254, 1973). The mean value of characteristic frequency is 5.26 Hz in horizontal direction and 6.84 Hz in vertical direction.