Rain fade struck many television sets throughout the Wellington region just as TV1's new current affairs show Seven Sharp went to air tonight.
MetService duty forecaster Philippa Murdoch said 49 millimetres of rain fell in the Hutt Valley between 11am and 7pm today while 19.2ml of rain fell for the same period over Wellington City.
Contributing to the rain fade problem for Freeview viewers was the thunder and lightning storm which also affected the Wellington region about 7pm tonight, Ms Murdoch said.
"A rain band over Wellington brought thunder and lightning with it."
Freeview viewers lost signals spasmodically across a number of channels for brief periods throughout the evening.
The warm 40kmh northerly winds will be replaced by a cold southerly change overnight and showers would continue through until Wednesday, Ms Murdoch said.
A Porirua police spokesman said there was heavy surface flooding in low-lying areas of the region.
The water was slowing down traffic but not a cause for any major concern.
"There's difficulty getting through some areas but when it rains that's how it is."
A Wellington City Council spokesman said there was also heavy flooding in Tawa, Karori and Johnsonville.
Meanwhile, the Epuni Railway Station subway between the Naenae and Waterloo stations on the Upper Hutt rail line is waist deep in water tonight. Fire Service crews are at the station endeavouring to pump the water out of the subway amidst the continuing heavy rain in the Hutt Valley.
A KiwiRail spokeswoman said TranzMetro passengers were not being allowed to use the subway and Epuni-bound passengers were being required to exit trains at the Naenae and Waterloo stations.
Meanwhile, passengers on a 6:30pm Air New Zealand flight from Auckland to Wellington had to be diverted to Christchurch after their flight circled Wellington Airport for 30 minutes looking for a break in the weather.
A passenger on the flight, Andrew McDouall, said passengers had been told they would be flown to Wellington later tonight from Christchurch when rain abated.
The rain is expected to ease overnight.
- The Dominion Post
Is this the best summer ever?Related story: Wellington sizzles in January heat