Metservice Weather Warnings
Strong north to northwest winds are expected about inland areas of the South Island on Sunday.
Please keep up to date with the latest forecasts, as this is likely to be a significant weather event affecting large parts of the country.
Heavy Rain Warning - Orange
Area: Northland
Period: 20hrs from noon Mon, 1 Jun - 8am Tue, 2 Jun
Forecast: Expect 80 to 130 mm of rain, but possibly as much as 150 to 200 mm in localised places.
Peaks rates of 15 to 25 mm/h expected Monday evening and night, and 25 to 40 mm/h in localised downpours.
Low 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.
Preparedness advice.
Area: Taranaki Maunga
Period: 33hrs from midnight Sun, 31 May - 9am Tue, 2 Jun
Forecast: Expect 250 to 300 mm of rain.
Peak rates of 25 to 35 mm/h expected Monday evening and night.
Low 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.
Preparedness advice.
Area: Headwaters of the Canterbury Lakes and Rivers about and south of Arthur's Pass
Period: 13hrs from 9am - 10pm Sun, 31 May
Forecast: Expect 200 to 300 mm of rain about the Divide, and 80 to 150 mm of rain within 15 km east of the Divide.
Peak rates of 20 to 25 mm/h about the Divide.
Note, further heavy rain is possible on Monday but amounts are now expected to be below warning criteria on this day.
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.
Preparedness advice.
Area: Westland south of Hokitika
Period: 37hrs from 9am Sun, 31 May - 10pm Mon, 1 Jun
Forecast: Expect 350 to 500 mm of rain about the ranges, and 100 to 150 mm of rain about the coast.
Peak rates of 20 to 30 mm/h expected about the ranges.
Thunderstorms possible from Monday morning.
Low 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.
Preparedness advice.
Area: Fiordland north of Charles Sound
Period: 11hrs from 9am - 8pm Sun, 31 May
Forecast: Expect 80 to 120 mm of rain.
Peak rates of 20 to 30 mm/h.
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.
Preparedness advice.
Area: Tasman District northwest of Motueka
Period: 41hrs from 9am Sun, 31 May - 2am Tue, 2 Jun
Forecast: Expect 350 to 400 mm of rain, but possibly more than 500 mm about the ranges.
Peak rates of 20 to 30 mm/h.
Thunderstorms possible.
Moderate 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.
Preparedness advice.
Area: Ranges of Buller
Period: 36hrs from noon Sun, 31 May - midnight Mon, 1 Jun
Forecast: Expect 200 to 300 mm of rain.
Peak rates of 15 to 25 mm/h.
Thunderstorms possible from Monday evening.
Low 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.
Preparedness advice.
Area: Richmond and Bryant Ranges, including Nelson City and the Rai Valley
Period: 40hrs from noon Sun, 31 May - 4am Tue, 2 Jun
Forecast: Expect 300 to 400 mm of rain, mainly about the ranges.
Peak rates of 15 to 25 mm/h.
Low 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.
Preparedness advice.
Issued: 9:42am Sun, 31 May
Next update: 9pm Sun, 31 May
Action advice supplied by the National Emergency Management Agency.