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Flood room status

Image - Flood room status - monitoring

Flood Room Live is monitoring. For information on current river levels, flows and rainfall accumulations, please visit our Environmental Data Hub.

Severe weather - Coromandel Peninsula

Published at 12.30pm on Monday, 20 January 2025

Situation

MetService has issued a Heavy Rain Watch (Orange) for the Coromandel Peninsula that is likely to bring heavy rain throughout Tuesday 21 January 2025, with a chance of thunderstorms and potential localised downpours. Strong winds may also affect the Coromandel and parts of Matamata-Piako. Please keep up to date with the current weather and messages from local civil defence.

For the latest river level and rainfall data, please visit our Environmental Data Hub.

MetService forecast

Changes to the weather can occur, so please keep up-to-date with the latest forecasts. For national severe weather information, MetService is New Zealand’s only authorised provider of Severe Weather Alerts.

Severe Weather Watches

A subtropical low and preceding fronts move slowly southwards across northern parts of the North Island from later today through to Wednesday morning, bringing easterly gales and periods of heavy rain. Warnings and Watches for Heavy Rain and Severe Gales are in force. Please stay up to date with the latest forecasts in case changes are made.

Heavy Rain Warning (Orange) - Coromandel Peninsula

Period: 15 hours from 6am to 9pm Tuesday
Forecast: Expect 80 to 110 mm of rain. Peak intensities of 15 to 25 mm/h late Tuesday morning and early afternoon with possible thunderstorms. Minimal chance of upgrading to a Red Warning.
Impact: Streams and rivers may rise rapidly. Surface flooding, slips, and difficult driving conditions possible.
Action: Clear your drains and gutters to prepare for heavy rain. Avoid low-lying areas and drive cautiously.
Changes: Upgraded to an Orange warning.

MetService map of the North Island showing the area of the region which is covered by the Orange Heavy Rain Warning.

Thunderstorms

There is also moderate risk of thunderstorms about northern parts of Auckland (north of Orewa) and Coromandel Peninsula, as well as the Hauraki Gulf and Great Barrier Island, to midday Tuesday. These thunderstorms will also produce localised heavy rain of 10-25mm/h, along with a low risk a few of the thunderstorms could be severe with localised downpours of 25-40mm/h.

A low risk of thunderstorms covers other parts of Auckland and Coromandel Peninsula from mid-morning.

MetService thunderstorm outlook map

Likely/potential Impacts

Rivers and lakes

Despite the recent dry weather allowing catchments to have plenty of storage, these downpours may cause rivers to rise rapidly causing localised flooding.

Land instability

Heavy rain has potential to impact localised areas. Areas that would normally experience land instability may be affected. Please keep up to date with the latest from Waka Kotahi

WRC Zone Summary 

Local flood response staff are on standby to respond to any impacts this weather may bring. All flood infrastructure working as it should.

WRC telemetry 

All  telemetry equipment is working as it should. For the latest telemetry information, please lease visit our Environmental Data Hub.

Next update

Flood Room Live will be updated by 12 noon on Tuesday, 21 January or earlier if circumstances should change.

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