A severe weather warning is in place for the Coromandel with up to 140mm of rain expected to fall near Te Puke in the next 24 hours.

The MetService reports bursts of heavy rain are expected throughout the Bay and Coromandel from tonight through to Saturday.

A complex trough of low pressure is slowly moving across the country. Photo: The MetService.

The heavy rain is likely to cause rivers to rise rapidly and may produce localised surface flooding and slips.

The BOP Civil Defence Emergency Management Group status has been updated following the MetService warning.

The authority reports rain in the Bay is expected to become heavy west of Te Puke this evening and further east tonight.

West of Te Puke, in the 12 hours from 9pm Friday to 9am Saturday, 80mm-100mm is expected in higher areas, especially the ranges.

East of Te Puke, in the 24 hours from midnight Friday to midnight Saturday, 100mm-140mm are expected about the ranges.

Peak intensities of 10mm-20mm/hr are likely for a time about higher areas.

A complex trough of low pressure is slowly moving east across the country. A moist northerly flow ahead of this trough is expected to bring rainfalls of 60mm-140mm in the Bay and Coromandel.