The cyclone caused unstable atmospheric conditions which produced strong updrafts, which are needed to create rainfall.
This coupled with warm temperatures produced rain and an increased chance of thunderstorms.
“There were some thunderstorms in the afternoon around the Hunterville-Mangaweka area,” he said.
What was left of one of those thunderstorms drifted over Whanganui, Miller said.
For the rest of the week, Miller expected the weather to become fine in the region as Hale moved to the east of the country.
As the cyclone moves on a high-pressure system is moving towards the North Island, meaning much drier conditions for the rest of this week and the beginning of next week.