From around midnight Friday until midday Saturday, there is a moderate risk that thunderstorms may become severe about the northern half of the North Island, as depicted on the chart. Severe thunderstorms will produce localised downpours with rainfall rates of 25 to 40 mm per hour or possibly more. The risk of severe thunderstorms eases in northern parts of the area from around dawn onwards.

Rainfall of this intensity can cause surface and/or flash flooding, especially about low-lying areas such as streams, rivers or narrow valleys, and may also lead to slips.

Driving conditions will also be hazardous with surface flooding and poor visibility in heavy rain.

Note: A Severe Thunderstorm Watch means conditions are favourable for severe thunderstorms in and close to the watch area. People in these areas should be on the lookout for threatening weather conditions and monitor for possible Severe Thunderstorm Warnings.

For information on preparing for and keeping safe during a storm, see the Civil Defence Get Ready website

Ensimmäinen julkaisu 6.11.2026 · Lähde: MetService (avautuu uuteen välilehteen)