www.metra.co.nz/metflight. You need to use your GNZ Membership Number with GNZ tacked on the beginning, (eg GNZ1234) as the User Name and your birthday in the format d/mm/yyy as the Password.
See the Gliding NZ Web site for more details and usage instructions.
Regional Atmospheric Soaring Prediction (RASP) http://www.zakalwe.com/rasp/listForecasts.php?region=NZNORTH_N