Police said they were notified of a single vehicle crash at 4:15pm on Te Teko Road.
It said there are no reports of injuries at this stage.
Police said there is nothing to suggest the road is blocked, however traffic may be slower than usual.
Hato Hone St John said two ambulances responded to a call at 4:11pm, but were stood down enroute to the scene by Police, as they were not required.
NZTA are urging motorists to be cautious while the heavy rain watch is in place.
It said while the alert is in place for west of Whakatāne, conditions may change quickly.
State Highway 2 through the Waioweka Gorge was closed temporarily this morning as a digger blocked the road and could be closed again if weather conditions worsen.
"State Highway 2 through the Waioweka Gorge may be closed at short notice if conditions deteriorate and it becomes unsafe for travel."
It said the situation will be assessed as the forecast is updated.
NZTA encourages motorists to check for updates, allow for extra travelling time, and to prepare to use alternate routes.
Community Constable Rob Jones said drivers will need to increase their following distance, turn on lights, and avoid travel if possible.
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