Weather conditions are going to be stormy for some in the north this weekend or on Monday as a sub-tropical low quickly develops and deepens north of New Zealand.

The low is likely to again bring heavy rain (and rain warnings) to eastern Bay of Plenty, still suffering from flooding that caused million of dollars of damage.

As with previous storms eastern Northland, Coromandel and East Cape are also at risk of heavy rain.

Aucklanders should have a dry but cloudy weekend, with rain or showers likely to arrive on Sunday.

The computer models and data aren’t agreeing on the outcome of this low so confidence remains moderatre at this early stage.

Strong winds, not damaging though, are also going to be associated with this low driving in strong easterlies which will likely hit gale force in marine areas north of Bay of Plenty and also exposed parts of Northland and Coroamandel Peninsula.

Isolated thunderstorms may also be possible late on Sunday, however it’s too early to know if they will affect populated places.

Meanwhile the South Island will see a southerly change moving through this weekend, bringing lower temperatures but heavy rain also for the West Coast.  Rain warnings are currently in force.

The rain fall totals are quite high, with some areas predicted to receive 300mm from this event, says MetService.  The entire west coast and Nelson are affected.

See the South Island’s rain warnings here