the first cold change has moved up the country overnight. Temperatures in #Central #Otago were not as cold as expected with Gibbston dropping to 4.5c and Pisa to 1.6c.
The next change has the coldest air and snow is expected about much of Otago and Southland tonight.
The change arrives in #HawkesBay tomorrow morning then frosts are likely for most places as high pressure builds.
Latest chart showing sea ice measurements in Antarctica.
Big change in temperatures for Hawkes Bay over the next 24-72 hours. Highs in the low 20’s on Thursday but these drop away into single figures by Saturday afternoon. Frosts are possible on Sunday morning across much of the east.
Things change again quickly next week however with a warm northwest flow redeveloping by Tuesday and strengthening on Wednesday. Temperatures are expected to push back towards the low 20’s
A cold southerly change is spreading up the country today and frost is highly likely tonight in Central Otago and Nelson. Hawkes Bay and Gisborne see showers throughout the night and a breezy southerly but temperatures could fall well below freezing by dawn on Monday about sheltered parts of the South Island.
A large anticyclone is building in the Tasman Sea and a ridge moves onto the South Island tonight.
Gisborne and Hawkes Bay GDD data has been updated and with the season closing shortly we can make some direct comparisons to previous years. As expected we finished with higher than average GDD and that matched higher than average temperatures. However it was a cool start to the season and most stats were running below average until December. Rainfall totals were near normal for most of the season but we have noticed a fall in rainfall through April. The current statistics are attached below.
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