ABSTRACT: The 11 February 2004 earthquake (ML 5.2)with an epicenter in the north eastern

part of the Dead Sea basin (at latitude 31.679 N, longitudes 35.585 E with a focal depth of 17

km)caused slight damage to several regions in the West Bank, Palestine. The earthquake was

felt in the Palestinian cities: Jericho, Hebron, Nablus, Ramallah, Bethlehem and Jerusalem but no

Life loss was reported. Moreover, few smaller earthquakes followed the Earthquake of 11 February

2004 at different locations and times of the same year 2004:7 July ML 4.8 (Lat 31.97 Long

35.55),20 July ML 3.6 (32.46,35.25),2 December ML 2.8 (32 .25,35.37).Th ey mainly felt in

the northern part of West Bank especially in Na blus City,alt hough they are not closed to Nablus

but because of some site effects factors (geological formations, structures etc.).Based on post-earthquake

investigations, many reinforced concrete buildings in Palestine suffered slight non-structural

damages (damage grade 1 according to European Macro seismic scale 1998 “EMS-1998”),

such as hair-line cracks in very few walls, specially over frame members or in walls at

the base and fine cracks in partition walls. Three old schools suffered moderate structural

damages and substantial non-structural damages (damage grade 3).The Earthquake affected also

many old masonry buildings in the Palestinian old cities (Jerusalem, Nablus, Hebron, Bethlehem,

….etc), in Nablus city few historical buildings have been affected with damages between grade 2

to grade 4.Th e damages that had been occurred had usually been at zone of pre-existing

weakness. In the light of the post-earthquake investigations the effected masonry and old masonry

Buildings suffered with many kinds of damages,such as:crack patterns in masonry pillars,

slippage between the block, corner detachment, a flat vault’s collapse, detachment between few

Perpendicular walls (in a corner)and crushing in masonry pillars.