La Nina ending, but lower pressure persists

[Mark]

NIWA, FuseworksMarch 30, 2012, 11:34 am


The La Nina event is dissipating, and ENSO-neutral conditions are returning to the tropical Pacific. However, lower pressures than normal are expected to persist north of the country during the April to May period, with more high pressure systems and ridges over and east of southern New Zealand.

The NIWA National Climate Centre's outlook for late autumn, April to June 2012, indicates air temperatures are likely to be average or above average in the west and south of the South Island, and near average elsewhere. Seas around New Zealand are likely to remain slightly cooler than normal.

Late autumn rainfall is likely to be normal or above normal in the north and east of the North Island, and near normal in all other regions. Soil moisture levels and river flows are likely to be near normal in the South Island and normal or above normal in North Island districts.

Seasonal temperatures are likely to be average or above average in the west and south of the South Island, and near average elsewhere. Despite the overall pattern of near average seasonal temperatures in most places, frosts typical of late autumn will occur from time to time with the anticyclonic conditions.
Rainfall, soil moisture and river flows Late autumn rainfall is likely to be normal or above normal in the north and east of the North Island, and near normal in all other regions. Soil moisture levels and river flows are likely to be near normal in the South Island and normal or above normal in all North Island districts.

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[Suezy]

Thanks Mark - appreciated.