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 the trough is likely to bring heavy rain to other areas of the northern half of the North Island from Monday and more warnings are likely to be issued in the coming days.
Heavy Rain Warning - Orange
Area: Tasman District northwest of Motueka
Period: 41hrs from 9am Sun, 31 May - 2am Tue, 2 Jun
Forecast: Expect 400 to 500 mm of rain, but possibly as much as 600 mm about some peaks.
Peak rates of 20 to 30 mm/h.
Thunderstorms possible from Monday evening.
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 the Rai Valley
Period: 40hrs from noon Sun, 31 May - 4am Tue, 2 Jun
Forecast: Expect 300 to 400 mm of rain.
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.
Area: Headwaters of the Canterbury Lakes and Rivers about and south of Arthur's Pass
Period: 16hrs from 6am - 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: 42hrs from 2am Sun, 31 May - 8pm Mon, 1 Jun
Forecast: Expect 400 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 midday Monday.
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: 12hrs from 6am - 6pm Sun, 31 May
Forecast: Expect 100 to 150 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.
Issued: 8:53pm Sat, 30 May
Next update: 10am Sun, 31 May
Action advice supplied by the National Emergency Management Agency.