Manawatu was lit up by more than 1300 lightning strikes at the weekend, and MetService forecasters are warning of more rough weather to come.
The region was battered by heavy rainfall, hail, gales and thunderstorms, with between 13mm and 30mm of rain pelting down in 24 hours.
Today, more heavy rain, thunderstorms, hail and wind gusts up to 100kmh are expected as a second front moves up the country.
MetService forecaster Chris Noble said there was a possible risk of small tornados.
He said the second front was expected to lash the region from midday until about 9pm.
Winds in Manawatu are expected to be strong enough to damage buildings, trees and powerlines, and the heavy rainfall predicted could cause streams and rivers to rise quickly.
Between 100mm and 150mm of rain is also expected to fall in the Tararua Ranges.
Mr Noble said it was hard to predict whether the second weather blast would be worse than the first.
"It only takes one thunderstorm to cause a lot of damage, so we're not sure how this one will pan out."
For a weather update go to manawatustandard.co.nz.
- Manawatu Standard
Should Manawatu's earthquake-prone buildings be yellow-stickered?Related story: Council won't use earthquake-risk stickers