West Coast Emergency Management is working hard to ensure people are prepared.
On the other side of the country, Auckland has been issued a heat warning.
A thunderstorm watch has been issued for parts of the North Island.
An active frontal system moves across the country today and Friday.
A day later and the Pūkakī Downs fire has finally died out.
"I used my backpack to protect myself and another girl."
Details are still being worked through, with decisions expected in the coming weeks.
The heavy rainfall is expected to cause surface or flash flooding. There is also a risk of slips.
"Weather-related disasters might in sum become as destructive to New Zealand as earthquakes."