The lightning discharge is an electrical breakdown current which currents generate transit radio pulses in the ELF/VLF band termed ‘atmospherics’ or ‘sferics’. One of the costliest natural hazards around the globe is flash floods, resulting from localized intense convective precipitation over short periods of time. Since intense convective rainfall is well correlated with lightning activity in these storms. In this research the ELF/VLF signals generated by lightning activity of thunder storms accrued from on April 13 was detected and analyses. The results are compare and verified with the World Wilde Lightning Location Network (WWLLN) data. the precipitation data is not enough to indicate the exact time of convective rainfall but we think it was happened between 18 to 19 on April 13 when the lightning activity is maximum.