He said the next three to four hours would bring the worst of the storm and by midnight things would ease off.
Emergency services were stretched, evacuating residents, responding flooding and road closures.
Bay of Plenty Coastal assistant area manager Kevin Cowper said fire crews were flat out responding to calls throughout the Coromandel and the Bay of Plenty.
"We're dealing with flooding, slips and trees down, those sorts of things."
There were reports of some homes in the region being flooded but Edgecumbe, the site of a devastating flood last week, appeared to be coping with the storm.
However, call-outs in that area could increase as the storm headed southward, he said.
The advice to residents was to "stay safe:" during the storm.
People living in low-lying houses should self-evacuate if they had any concerns for the safety, Mr Cowper said.
There were power surges throughout Tauranga and power was cut in areas across the region.
Over 750 homes in Welcome Bay had lost power, 130 in Te Puke and Pongakawa, 170 in Waihi, 180 on Matakana Is and 670 across the Tauranga and Te Puna region.
The Tauranga Airport was closed for all flights until further noticed.
Surface flooding had started to accumulate on main roads including Elizabeth St and Takitimu Dr.
Residents across the region say rain is easing after heavy downpours caused flooding in parts of Tauranga.
Bayfair resident Elanor Mathews said floodwaters had entered her home.
"There has been some flooding at the back door and come through into my laundry. I have three sets of towels to try and mop it up."
The water was about an inch deep.
The storm appeared to have eased, with little rain and wind gusts dying down.
Papamoa resident Debbie Miles said her house never flooded but they currently had about an inch deep worth of water all over their Wairakei Av home.
"It's draining and running off but falling quicker than it's draining. Nothing too serious here rain wise, but the wind sounds nasty."
A long-term Links Ave resident said there was surface flooding in the area.
The street was prone to flooding, but she was not aware of any homes being flooded tonight.
Water was lapping up her driveway each time a car drove by, she said
There were deep pools of water around the Spur Rd and Links Ave area, but the rain appeared to be subsiding.
She prepared for the worst after reading news reports of the cyclone, which appeared to have caused less damage than a tornado that tore through the area two years ago.
The tornado blew a neighbour's shed over the top of their house and sent a tool box and paint crashing living room.
"That caused a lot of damage", she said.