"Training exercises of this magnitude are an incredibly important part of our civil defence preparedness designed to test and enhance our people, systems and procedures and ensure their readiness and capacity to respond to a real life event."
In addition to getting all the partner agencies to work together, the exercise will let people whose normal day jobs aren't in emergency services to get a feel for what a real life civil defence response involves.
With the coming ski season and visitor numbers to Ruapehu expected to surge with the opening of RAL's new Whakapapa gondola, this exercise is very timely.
"We always aim to make the exercises as realistic as possible which will involve such things as setting up the emergency operating centre (EOC) in Taumarunui," Watson said.
"And the use of incident control points (ICP) in the field and activation of the eruption alarm which will be heard by people around Whakapapa."
There is no need for the public to be concerned if they see a high level of activity by emergency responders on Wednesday, May 15.
Watson said that fire, emergency and police services will not be impacted by the exercise and anyone needing them should not hesitate to contact them as usual.
Anyone who has queries about the exercise can call Watson directly on 021 247 7340.