A slow moving rain band has prompted the government owned forecaster to issue rain warnings for most of the South Island reports WeatherWatch.co.nz.

The heavy rain will affect Southland and much of the West Coast with spillover into rivers along the east coast.

Here all the rain warnings in their entirety.

 Westland

Heavy Rain Warning, Areas Affected: Westland south of Arthurs Pass Heavy rain is expected to continue until Monday morning. In the 21 hours from 9am Sunday to 6am Monday, expect 150 to 200mm of rain about the ranges, and 70-100mm near the coast. Peak intensities of 20-30mm/hr are likely in the ranges until early Monday morning.
Issued: 8:27 am 6 Feb 2011 NZDT

Fiordland

Heavy Rain Warning, Areas Affected: Fiordland Heavy rain is expected to continue until Sunday night. In the 15 hours from 9am Sunday to midnight Sunday expect 150 to 200mm of rain, with peak intensities of 20 to 30mm/hr.
Issued: 8:27 am 6 Feb 2011 NZDT

Christchurch

Heavy Rain Warning, Areas Affected: Headwaters of Canterbury Lakes and Rivers Heavy rain is expected to continue till Monday morning. In the 21 hours from 9am Sunday to 6am Monday, expect 120 to 150mm near the Divide, and over 80mm within 15km east of the Divide.
Issued: 8:27 am 6 Feb 2011 NZDT

Canterbury Plains

Heavy Rain Warning, Areas Affected: Headwaters of Canterbury Lakes and Rivers Heavy rain is expected to continue till Monday morning. In the 21 hours from 9am Sunday to 6am Monday, expect 120 to 150mm near the Divide, and over 80mm within 15km east of the Divide.
Issued: 8:27 am 6 Feb 2011 NZDT

Canterbury High Country

Heavy Rain Warning, Areas Affected: Headwaters of Canterbury Lakes and Rivers Heavy rain is expected to continue till Monday morning. In the 21 hours from 9am Sunday to 6am Monday, expect 120 to 150mm near the Divide, and over 80mm within 15km east of the Divide.
Issued: 8:27 am 6 Feb 2011 NZDT

Dunedin City

Heavy Rain Warning, Areas Affected: Headwaters of Otago Lakes and Rivers Heavy rain is expected to persist through Sunday night. In the 18 hours from 9am Sunday to 3am Monday, expect 100-130mm near the Divide, and 80mm within 15km east of the Divide. Some heavy falls are also possible farther east, with 40-70mm likely from late afternoon till Monday morning.
Issued: 8:27 am 6 Feb 2011 NZDT

Otago

Heavy Rain Warning, Areas Affected: Headwaters of Otago Lakes and Rivers Heavy rain is expected to persist through Sunday night. In the 18 hours from 9am Sunday to 3am Monday, expect 100-130mm near the Divide, and 80mm within 15km east of the Divide. Some heavy falls are also possible farther east, with 40-70mm likely from late afternoon till Monday morning.
Issued: 8:27 am 6 Feb 2011 NZDT

Southern Lakes

Heavy Rain Warning, Areas Affected: Headwaters of Otago Lakes and Rivers Heavy rain is expected to persist through Sunday night. In the 18 hours from 9am Sunday to 3am Monday, expect 100-130mm near the Divide, and 80mm within 15km east of the Divide. Some heavy falls are also possible farther east, with 40-70mm likely from late afternoon till Monday morning.
Issued: 8:27 am 6 Feb 2011 NZDT

Southland

Heavy Rain Warning, Areas Affected: Southland Rain should set in towards the middle of the day. In the 15 hours from noon Sunday to 3am Monday, expect 60-70mm. Peak intensities of 10-15mm/hr.
Issued: 8:27 am 6 Feb 2011 NZDT