On 22 March , an intense earthquake ( 5.4 on the Richter scale ) hit the city of Zagreb , at 6:24 AM and was followed by multiple aftershocks with the largest being a event at 7:01 AM .
Zagreb witnessed three earthquakes , one of 5.4 magnitude on the Richter scale at 6.24 AM , CET and the other two of 5.0 and 3.7 magnitudes respectively during the 2020 coronavirus pandemic in Croatia .