Metservice has issued a severe thunderstorm watch for Northland, expected to last into the evening.
The watch was issued at 11.45am today and is in force until 9pm.
"Isolated thunderstorms are expected to develop about Northland and Auckland early this afternoon, with localised heavy rain."
Severe thunderstorms are expected to hit western and southern parts of Northland, south of Kaitāia, between about 1pm and 9pm.
Local wind gusts up to 60 to 70kmp/h may accompany the oncoming thunderstorms.