The latest quake was at Porangahau, which is one of the most active sesmic areas of New Zealand at the moment.
A 4.4 magnitude earthquake struck Hawke's Bay this morning following several small jolts in the region yesterday.
The quake struck at 2.42am, GNS Science said, within five kilometres of Porangahau at a depth of 50km.
GNS Science said the quake was felt in Hawke's Bay and Manawatu.
The jolt follows a 3.9 earthquake 10 km north-east of Waipawa at 8.14pm last night at a depth of 25km, a magnitude 3.6 earthquake at 12.26pm about 30 km southeast of Hastings at a depth of 25 km, and at 9.50am a magnitude 3.2 quake was recorded 20km southeast of Hastings at a depth of 20 km.
A deep 5.7 magnitude tremor also struck last night off Bay of Plenty. The quake struck at 10.57pm and was centred 20km northeast of Tauranga at a depth of 310km.