On 22 March , an intense earthquake ( 5.4 on the Richter scale ) hit the city of Zagreb , at 6:24 AM ( CET ) and was followed by multiple smaller earthquakes ( the second with a magnitude of 5.0 and third a 3.7 on the Richter scale ) .
The largest aftershock of the earthquake in Zagreb , Croatia , on March 22 , 2020 , occurred at 7:01 AM .