Metservice have a high risk of thunderstorm activity with an active front crossing the NI tomorrow morning.
Also a severe weather watch out for Auckland - apparently the front may become slow moving.
Severe thunderstorm outlook below
tstormOutlook25Aug2013.png
Valid to: Noon Sunday 25 Aug 2013
Issued at: 9:01pm Saturday 24 Aug 2013
An active front is expected to move south over Northland overnight, then Auckland, Coromandel Peninsula and northern Waikato from early Sunday morning.There is a high risk of significant convection and thunderstorms with the front,bringing squally wind gusts of 90-110 km/h and heavy rain of 15-25mm/hr.Additionally there is a moderate risk that the significant convection and thunderstorms could be SEVERE, with associated winds gusting stronger than 110 km/h. A SEVERE THUNDERSTORM WATCH has been issued. Small tornadoes are also possible.
For the rest of Waikato, Waitomo and the western Bay of Plenty, there is a moderate risk of thunderstorms from early morning, bringing heavy rain and strong wind gusts of 90-110 km/h.
No thunderstorms expected over the rest of the country.
Sudden thunderstorm here 6am. 1second from lightning to thunderclap. Rain rate hit 226 mm/hr (new record for me) with small hail but it didn't last long.
I was woken just before 4am by some really intense rain and what sounded like a few small hailstones. I've lived in this house for 16 years and I would be fairly comfortable in saying that it was the loudest downpour I've experienced. I was quite worried about flooding. The thunder started not long after, some of it shaking the house. Kept me awake until 5.30am, at least. Can't believe the little guy slept through it. All the neighbours' lights were on!