Hawke’s Bay Earthquakes

Some residents of Hawke’s Bay were woken by a light earthquake early this morning, the sixth quake of third or fourth magnitude to strike the region this month.

A magnitude 4.5 earthquake struck 30 km north-east of Napier at 2:21 a.m. on the morning of Friday the 25th of July 2008. The 40 km-deep quake was located off-shore under Hawke’s Bay 20 km south of Raupunga. The tremor was widely felt in nearby areas, but damage is not expected.

This morning’s quake is the sixth to strike the area this month. Earlier activity has tended to be further south, closer to Hastings.

A magnitude 3.2 quake, 30 km deep, struck the shoreline 20 km east of Hastings at 1:02 p.m. on Wednesday 23rd. This quake followed a magnitude 4.3 quake at 8:03 a.m. the previous day which was located a little further south (20 km south-east of Hastings) at a depth of 40 km. The larger quake has attracted 136 felt reports from the public, according to GeoNet’s website.

Prior to that a magnitude 3.4 quake struck 10 km north of Hastings at a depth of 40 km on Saturday July 19th at 6:32 p.m. A magnitude 3.8 quake, 30 km deep, struck 20 km east of Hastings on the morning of July 7th; and a magnitude 3.9 quake, 40 km deep, struck 40 km south of Hastings on the evening of July 2nd.

The region was relatively quiet during June. In May, activity was located east of Napier with two quakes of magnitude 4.5 and 3.3 and a magnitude 3.8 quake off the coast near Mahia Peninsula.

[Compiled from data provided by the GeoNet project and its sponsors EQC, GNS Science and FRST.]

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