A slow-moving low is expected to remain to the northwest of the upper North Island until Tuesday, then move southwards over the Tasman Sea from Wednesday to Friday.
This low delivers rain and heavy showers to the upper North Island through to Tuesday, then rain spreads to the northern and western parts of the South Island from Wednesday.
Severe Thunderstorm Warning
Area: Carterton, Kapiti Coast, Upper Hutt City, South Wairarapa
Forecast: At 05:15 pm, MetService weather radar detected severe thunderstorms near THE SOUTHERN TARARUA RANGES.
These severe thunderstorms are moving towards the southsouthwest, and are expected to lie near THE SOUTHERN TARARUA RANGES at 05:45 pm and near UPPER HUTT, THE SOUTHERN TARARUA RANGES and KAITOKE at 06:15 pm.
These thunderstorms are expected to be accompanied by torrential rain and large hail.
Torrential rain can cause surface and/or flash flooding about streams, gullies and urban areas, and make driving conditions extremely hazardous.
Large hail can cause significant damage to crops, orchards, vines, glasshouses and vehicles, and make driving conditions hazardous.
A Severe Thunderstorm Watch remains in force for WANGANUI, MANAWATU, TARARUA, KAPITI-HOROWHENUA, WAIRARAPA and WELLINGTON.
The National Emergency Management Agency advises that as storms approach you should:
- Take shelter, preferably indoors away from windows;
- Avoid sheltering under trees, if outside;
- Get back to land, if outdoors on the water;
- Move cars under cover or away from trees;
- Secure any loose objects around your property;
- Check that drains and gutters are clear;
- Be ready to slow down or stop, if driving.
During and after the storm, you should also:
- Beware of fallen trees and power lines;
- Avoid streams and drains as you may be swept away in flash flooding.
Area: Upper Hutt City, South Wairarapa
Forecast: At 05:15 pm, MetService weather radar detected severe thunderstorms near FEATHERSTON, UPPER HUTT and LAKE WAIRARAPA.
These severe thunderstorms are moving towards the south, and are expected to lie near LAKE WAIRARAPA and PIRINOA at 05:45 pm and near LAKE FERRY, LAKE WAIRARAPA and PIRINOA at 06:15 pm.
These thunderstorms are expected to be accompanied by torrential rain and large hail.
Torrential rain can cause surface and/or flash flooding about streams, gullies and urban areas, and make driving conditions extremely hazardous.
Large hail can cause significant damage to crops, orchards, vines, glasshouses and vehicles, and make driving conditions hazardous.
A Severe Thunderstorm Watch remains in force for WANGANUI, MANAWATU, TARARUA, KAPITI-HOROWHENUA, WAIRARAPA and WELLINGTON.
The National Emergency Management Agency advises that as storms approach you should:
- Take shelter, preferably indoors away from windows;
- Avoid sheltering under trees, if outside;
- Get back to land, if outdoors on the water;
- Move cars under cover or away from trees;
- Secure any loose objects around your property;
- Check that drains and gutters are clear;
- Be ready to slow down or stop, if driving.
During and after the storm, you should also:
- Beware of fallen trees and power lines;
- Avoid streams and drains as you may be swept away in flash flooding.
Severe Thunderstorm Watch
Area: Wanganui, Manawatu, Tararua, Kapiti-Horowhenua, Wairarapa, Wellington
Period: 4hrs 30min from 4:30pm - 9pm Sun, 29 Jan
Forecast: Thunderstorms are developing this afternoon about Whanganui, Manawatu, Wairarapa, Horowhenua, Kapiti Coast, and northern and eastern Wellington. There is a possibility some of the thunderstorms could become SEVERE till about 9pm, producing localised downpours of 25 to 40 mm per hour, and possibly large hail (diameter greater than 20mm).
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.
Large hail can cause significant damage to crops, orchards, vines, glasshouses and vehicles, as well as make driving conditions hazardous.
Area: Northland, Auckland
Period: 16hrs from 6pm Sun, 29 Jan - 10am Mon, 30 Jan
Forecast: A slow-moving front drifting west should pass over northern Auckland and Northland this evening and during Monday morning. Thunderstorms are possible with this front, some of which may be SEVERE. Regardless of whether thunderstorms occur or not, there is the possibility of downpours, with intensities of 20 to 40 mm per hour, especially between 6pm Sunday and 10am Monday, although conditions may ease slightly earlier in Auckland.
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.
