Key Takeaways:
- Heavy rain warnings have been issued for Northland, Auckland, and the Coromandel Peninsula due to a strong, humid easterly flow.
- Up to 110mm of rain is expected in Northland, with northern and eastern areas possibly receiving 150mm or more.
- Auckland and the Coromandel Peninsula can expect heavy rain from early Tuesday, with totals ranging from 80-120mm.
- A low of tropical origin is expected to approach the North Island on Wednesday, bringing heavy rain and strong east to northeast winds.
- The situation is uncertain, and significant changes in the forecast are possible.
Introduction to the Weather Situation
The Northland region, parts of Auckland, and the Coromandel Peninsula are bracing for heavy rain as a strong, humid easterly flow brings prolonged rain, severe thunderstorms, and localized downpours. MetService has issued orange heavy rain warnings for Monday and Tuesday, with the possibility of another watch or warning being issued for Wednesday. The warnings come after Northland was slammed by torrential rain on Sunday morning, causing significant flooding, slips, and road closures.
Current Weather Warnings and Watches
As of 9 pm Monday, heavy rain warnings have been issued for Northland, Auckland north of the Harbour Bridge, Great Barrier Island, and the Coromandel Peninsula. The warnings are in effect from 9 pm Monday to 2 pm Tuesday for Northland, and from 2 am Tuesday to 6 pm Tuesday for Auckland and Great Barrier Island. The Coromandel Peninsula is under a 24-hour warning from 2 am Tuesday to 2 am Wednesday. The heavy rain is expected to bring totals ranging from 80-120mm, with some areas possibly receiving up to 140mm.
Impact of the Heavy Rain
The heavy rain has already had a significant impact on Northland, with up to 200mm of rain falling in localized areas on Sunday. The rain caused significant flooding, damaging homes and a recently renovated community hall in akura. The flooding also forced people to evacuate to nearby marae, and crews have been working to clear slips and restore access to affected areas. The New Zealand Transport Agency (NZTA) has announced that State Highway 2 through the Waioweka Gorge will likely remain closed for several weeks due to the heavy rainfall, which triggered dozens of slips and washed out sections of road.
Preparations and Warnings
Civil Defence Northland is actively preparing for further heavy rain by monitoring forecasts and coordinating with councils and key stakeholders. Residents are being encouraged to take precautions, including securing outdoor furniture and loose items, clearing drains and gutters, and moving valuables and vehicles away from flood-prone areas. They are also advised to have a grab bag and evacuation plan ready, as well as ensuring they have food, water, medications, torches, and charged devices. NZTA is also warning motorists to exercise caution on the roads, with many roads still closed or restricted due to the heavy rain.
Uncertainty and Future Forecast
The situation is uncertain, with the path and strength of the low of tropical origin that is expected to approach the North Island on Wednesday still unclear. MetService is warning of the possibility of significant changes in the forecast, with heavy rain and strong winds possible in many northern and central parts of the country. The low is expected to pass over the central North Island, and may extend a trough onto the South Island, bringing heavy rain and strong winds to these areas. Residents are advised to stay up to date with the latest forecasts and warnings, and to be prepared for any eventuality.
Conclusion
In conclusion, the Northland region, parts of Auckland, and the Coromandel Peninsula are facing a significant weather event, with heavy rain warnings in place and the possibility of further warnings being issued. The situation is uncertain, and residents are advised to take precautions and stay up to date with the latest forecasts and warnings. The heavy rain has already had a significant impact on Northland, and it is essential that residents are prepared for any eventuality. By staying informed and taking the necessary precautions, residents can help to minimize the impact of the heavy rain and stay safe.