  In this paper we show that the simple analysis of the local geomagnetic field
behaviour can serve as reliable imminent precursor for regional seismic
activity increasing. As the first step the problem was investigated using one-
component Dubna fluxgate magnetometer. The result of 2001-2004 Sofia monitoring
confirmed many old papers for connection between Earth tide (Sun- Moon tides as
earthquakes trigger) and jump (Geomagnetic quake) of daily averaged one minute
standart deviation of the geomagnetic field. The second step (2004-present),
which included analisys of three-component Danish fluxgate magnetometer data,
worked in Skopje Seismological observatory, confirmed the first step result.
The analysis of INTERMAGNET data stations around which was happened stronger
earthquakes also confirmed our result. The distribution of time difference
between the times of such earthquakes and local daily averaged tide vector
movement for impending tide extreme confirms our estimate that the increasing
seismicity is realized in time window about +/- 2.7 days. The Complex program
for researching the possibility for when, where and how earthquakes prediction
is proposed as well as the short description of FORTRAN codes for analysis of
earthquakes, geomagnetic and tide data, their correlations and visualization.
