Heavy rain was considered to be over 6mm in an hour but warnings were not issued until rain reaches 100mm in 24 hours, he said. As of yet, no heavy rain watches or warnings have been issued.
On Wednesday winds will turn to strong southerlies in the morning.
Thursday will be a "reasonable day" as fine spells increase throughout the day.
Temperatures for the first half of the week will be in the mid-teens throughout the region before a southerly change brings colder temperatures in the second half of the week.
Showers develop again on Friday and temperatures drop to 11 to 12 degrees Celsius throughout the region.
These colder temperatures continue throughout the weekend, starting to ease on Sunday with Waipukurau at 10C on Saturday and 11C on Sunday. Napier and Hastings will be 12C on Saturday and 13C on Sunday and Wairoa 11C and 12C.