Alert opened: 20 Sep 2025
STRONG WIND WARNING - RED
Area: Canterbury about and west of the foothills, also west of SH1 south of the Rakaia River
Period: 17 hours from 10:00pm Sat 20 Sep to 3:00pm Sun 21 Sep
Forecast: Severe gale northwesterlies with damaging gusts of 150 km/h in exposed places.
Impact: Threat to life from flying items and falling trees. Destructive winds will cause widespread damage including powerlines and roofs, with dangerous driving conditions and significant disruption to transport and power supply.
Action: Stay indoors or seek sturdy shelter away from trees. Avoid travel. Be ready for power and communication outages.
HEAVY RAIN WARNING - ORANGE
Area: Headwaters of the Canterbury lakes and rivers
Period: 12 hours from 3:00am Sun 21 Sep to 3:00pm Sun 21 Sep
Forecast: Expect 120 to 180 mm of rain about the main divide, and 100 to 150 mm within 30 km farther east. Peak rates of 20 to 30 mm/h expected Sunday morning. Freezing level 2200 metres.
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.
Area: Headwaters of the Otago lakes and rivers
Period: 7 hours from 1:00am Sun 21 Sep to 8:00am Sun 21 Sep
Forecast: Expect 100 to 160 mm of rain about the main divide, and 80 to 120 mm within 20 km farther east. Peak rates of 15 to 25 mm/h expected about the divide. Freezing level 2200 metres.
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.
STRONG WIND WARNING- ORANGE
Area: Queenstown Lakes, Central Otago and inland parts of North Otago, Dunedin and Clutha
Period: 8 hours from 12:00am Sun 21 Sep to 8:00am Sun 21 Sep
Forecast: Severe gale north to northwesterlies gusting 120 km/h in exposed places.
Minimal chance of upgrading to a Red Warning.
Area: Canterbury east of SH1 south of the Rakaia River, and away from the foothills further north
Period: 12 hours from 3:00am Sun 21 Sep to 3:00pm Sun 21 Sep
Forecast: Severe gale north to northwesterlies gusting 120 km/h in exposed places, especially about Banks Peninsula.
Low chance of upgrading to a Red Warning.
Impact: Damage to trees, powerlines, and unsecured structures possible. Driving may be difficult, especially for high-sided vehicles and motorcycles.
Action: Prepare your property by securing items that can be picked up by strong winds. Drive cautiously.
Affected districts
Know where you can find up to date information
Maniototo Burn - 92.3 FM/729 AM
More FM - 90.3 FM / 94.3 FM
RNZ National - 101.5 FM/639 AM
Newstalk ZB - 89.6 FM / 95.1 FM / 90.6 FM
Radio Central - 91.9 FM (Alexandra, Clyde, Cromwell), 94.3FM (Teviot Valley), 104.3 FM (Maniototo)
Radio Live - 95.9 FM
Radio Wanaka - 92.2 FM
The Hits - 99.9 FM
More FM - 93.7 FM (South Otago from Clinton), 92.9 FM (Balclutha),
107.1 FM (from Lawrence).
Hokonui - 94.8 FM (Southland), 91.3 FM & 88.3 FM (South Otago),
95.2FM (West Otago)
RNZ National - 101.4 FM / 810 AM
Radio Dunedin - 1305 AM, 95.4 & 106.7FM
More FM - 97.4 FM
The Hits - 89.4 FM
The Breeze - 98.2 FM
Magic Talk - 96.6 FM
Newstalk ZB - 1044 AM
RNZ National - 101.4 FM
RNZ National - 810 AM
OAR FM - 105.4 FM, 1575 AM
Queenstown Lakes - Queenstown
More FM - 92 FM
The Hits - 90.4 FM
Newstalk ZB - 89.6 FM
RNZ National - 101.6 FM/1134 AM
Queenstown Lakes - Wanaka
Radio Wanaka - 92.2 FM
More FM - 99.4 FM
The Hits - 96.2 FM
RNZ - 101.0 FM
Newstalk ZB 90.6 FM
More FM - 100 FM
RNZ National - 101.4 FM & 810 AM
Newstalk ZB - 1395 AM
Oamaru Heritage Radio - 88.3 & 107 FM
Real- 104FM
The Hits - 98.4 FM
Oamaru FM - 91.2FM
The Breeze- 97.6 FM
Puketapu Radio - 756 AM
