0 Storm update #1 Sept 25th

• Sept 2020 Winter Storm
• by Stuart Gunn
• 24-09-2020

  Southern Ocean Storm: Deadly wind chills for newborn livestock in southern NZ next week 25/09/2020 8:26amSource Weatherwatch   Wind chills of below -10C are possible in some farming communities of the lower and alpine South Island on Monday and Tuesday as an explosive storm rapidly develops over the south Tasman Sea and then the Southern Ocean this weekend.   Monday 7am Misery Index  (Wind /Temp combo - Green Dot). Temp in CHCH is 1.5deg   Misery index for 4pm Monday at Invercargill . Temp -3.5deg  The low is expected to have central air pressure of 982hPa at noon Saturday over the south Tasman Sea, dropping to 957hPa on Sunday over the Southern Ocean and then 931hPa by Monday. On Monday the centre of this storm will likely be 1000km south east of Dunedin and peaking in power. This southern placement of the storm means that northern NZ, although windy, won’t be caught up in the main event. However the lower South Island certainly will be – and winds from straight off Antarctica will surge up the lower South Island. Head forecaster Philip Duncan says in fact wind chills halfway between Stewart Island and the Antarctic Ice shelf, over the Southern Ocean, will be -30C to -40C. “By the time those winds reach NZ it will be -2 to 10C in some exposed parts of Southland and Otago on Monday (especially overnight Monday and into Tuesday morning)” . “Wind chill below zero can kill newborn livestock, especially with hail, sleet, snow and rain showers in the mix to make the animals wet”. Comparison of last 6years related to pressure differences between Auckland and Invercargill Stay ahead of others with FREE real time alerts.  Click Here