The centre, which normally operates 24 hours a day, seven days a week, was closed from 2pm until 10pm on Friday. Earth Sciences New Zealand confirmed the temporary closure, warning that some of its usual products and services could be delayed or limited until the centre reopened.
The PSA said the closure was a direct result of government funding cuts that reduced the centre's budget by $4 million and its staffing by 25 percent. The union had previously warned that the cuts could affect the centre's ability to operate continuously.
PSA national secretary Fleur Fitzsimons criticised the cuts, saying: "Geohazard monitoring is not a nice-to-have. The temporary closure of the monitoring centre is a scandal and a national tragedy waiting to happen. Irresponsible cuts by this Government are to blame."
The government has not yet responded to the allegations. The closure raises concerns about New Zealand's preparedness for natural disasters in a seismically active region.