M 6.4, Weber II, May 13 1990Location: Weber/Tarewa
Date (NZ Standard Time): Sunday, May 13 1990 at 4:23 pm
Epicentre: 40.43°S, 176.47°E
Focal Depth: 30 km
Maximum Intensity: MM 9
Magnitude: MW 6.4This was the second of four large earthquakes to shake the Weber region, in the south-east of the North Island, between 1990 and 1992. It was felt widely from Hamilton to Takamatua Bay on the Banks Peninsula, reaching a maximum intensity of MM 9 in Tarewa. As with many moderately sized earthquakes, the intensities experienced in different locations were influenced by the stability of underlying soils and sediment in each area. Consequently, poorly consolidated areas experienced more intense shaking and suffered more damage.

Full report regarding all 4 Weber Earthquakes between 1900 and 1992 can be found here:
Weber Earthquakes 1990 - 1992You will notice also it was Mother's Day on the 13th of May 1990 as with today.