Earthquake swarm: More than 140 quakes of magnitude 4 or greater recorded since Friday 6 Mar, 2021 07:56 PM 2 minutes to read An “impressed” Emergency Management Minister Kiri Allan spoke with Newstalk ZB’s Simon Barnett and Phil Gifford after the tsunami threat was downgraded. Audio / Newstalk ZB An “impressed” Emergency Management Minister Kiri Allan spoke with Newstalk ZB’s Simon Barnett and Phil Gifford after the tsunami threat was downgraded. Audio / Newstalk ZB RNZ Seismologists have recorded more than 140 earthquakes of magnitude 4 or higher since a 7.2 earthquake caused householders to flee low-lying East Coast areas on Friday morning. A magnitude 7.2 earthquake shook much of the North Island on Friday.