The Metservice warns: ‘Thunder and lightning mean road conditions could be frightening. Drivers should take extra care on Wairarapa and Wellington state highways today and tonight with bad weather forecast for the region. The Metservice has a heavy rain warning in place for the Tararua District and Wairarapa north of Featherston. Rain with thunderstorms is forecast, and up to 200 mm of rain is possible between two pm today and 5 am Wednesday. A severe thunderstorm watch has also been issued for Wellington, Wairarapa, Tararua, and Kāpiti-Horowhenua. It means drivers must be prepared for wet weather and hazardous driving conditions. Localised flooding and slips are a possibility across the regional state highway network. Road users should drive to the conditions, watch their speed and following distances and use their headlights when visibility is bad. People should also check road conditions and make sure routes are open before they travel. Metservice weather warnings.