The anti-cyclone occurs as the winds spin anticlockwise in the Southern Hemisphere producing some fine, settled weather.
Ms Murdoch said today should be a fine day with only a few showers towards the coast.
"Strong southerlies will start the day off but these should ease by the afternoon."
Overnight temperatures drop to a low of four degrees, bringing a frosty start to both Saturday and Sunday.
"It will be chilly in the mornings but people can expect clear skies and sunny spells for the rest of the day."
Ms Murdoch said the only rain expected to fall was along the coast and these showers shouldn't move inland.
On Sunday showers would continue to linger about the coastal areas but fine spells were expected elsewhere.
A high of 18C was forecast for Napier and a high of 17C was forecast for Hastings tomorrow while a high 17C was forecast for Napier and Hastings on Sunday.
"Temperatures will stay in the mid to high teens and it is going to be a mainly fine weekend with some settled weather."
This latest tropical cyclone threat has formed outside the cyclone season and comes only a month after Cyclone Cook ripped through the region.
Severe gales ripped trees out of the ground, left thousands without power and forced roads and parks to close.
The Hastings District Council, Napier City Council and Hawke's Bay Regional Council are still cleaning up from the cyclone's aftermath.
Then just one week earlier Cyclone Debbie battered the region with heavy downpours and flash flooding.
Weatherwatch said this weekend high would remain in charge until Tuesday when it slides east and is replaced by a Tasman Sea low and then, possibly the rainy remnants of Donna as the then ex-cyclone falls apart as it leaves the tropics heading south.
According to Weatherwatch there is about a 70 per cent chance of the cyclone hitting the country at this early stage.