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Tuesday Newsfeed: Low pressure to cross North Island on Tuesday, rain lingers in east (+9 Maps)

Updated 7:55am Tuesday — Heavy rain continues for parts of the North Island, including dry eastern and southern parts. The South Island may get brushed with it in the east, but rainfall totals look much lower there compared to the North Island. In fact a large portion of the South Island is drier than average for the middle portion of May.

Hawke’s Bay and Gisborne areas may receive 80 to 200mm over the coming days, mostly in the ranges but low lying areas have some potential too. This is heavy enough to cause slips, localised flooding and road closures.

As we’ve said for a week now, this low is a ‘messy’ system (in fact even in the past 48 hours global modelling has been different in each update and from each provider) – so heavy rain will likely be broken into pieces. Our mountains and ranges play another roll at increasing totals and lowering them…so any slight movement in airflow can alter rainfall. Another reason why a low with sometimes two centres makes it more complicated.

There will be rainfall variety within regions with some areas only getting 5 to 20mm, others potentially in line for 100 to 200mm (especially around the eastern ranges of the North Island). See our weather videos for more details. Our next video update will be published around lunchtime Tuesday and we’ll be seeing just how long this low pressure zone will linger this week before the next big sou-west flow and high pressure zone move closer.

View 7 day cumulative rainfall maps here.

MetService warnings and watches here.

Cumulative rainfall for 6:01am on Wed 22 May 2024
Rainfall from today to Wednesday
Cumulative rainfall for 6:01am on Fri 24 May 2024
Rainfall for the working week. Localised totals may go higher – and rain bands may shift around, meaning our mountains and ranges lower totals from what is currently forecast. Rainfall forecasts will change a bit this week due to the fact the low pressure zone has more than one centre at times, making precision trickier.
CLICK HERE to view the latest warnings and watches, or see them in our app
Air pressure forecast to drop to 999hPa at the centre of the messy shaped low.
997hPa as the low moves offshore to the east.
Maps powered by Weatherzone, Graphics by WeatherWatch.


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