Operator
Thank you for standing by, and welcome to the Northern Star operational update. [Operator Instructions]
I would now like to hand the conference over to Stuart Tonkin, Managing Director and CEO. Please go ahead.
Stuart Tonkin
CEO, MD & Director
Good morning, and thanks for joining us on the call. With me today is our Chief Financial Officer, Ryan Gurner; and Chief Operating Officer, Simon Jessop.
On Friday, we provided an operational update on the back of a soft December quarter. And subsequently, we have revised down our annual production guidance to now 1.6 million to 1.7 million ounces from 1.7 million to 1.85 million ounces. The full year reduction has been necessary due to a number of isolated operational events late in the December quarter, which have largely now been rectified, and Simon will talk to these shortly. This positions the group to deliver second half production of 871,000 to 971,000 ounces.
We will be providing December quarter costs with the quarterly results published on Thursday, 22nd of January as well as any outlook to the full year cost guidance.
I’d like to reinforce our confidence in the underlying asset portfolio and thank our teams who worked to address the recent operational impacts promptly and safely.
Our long-term value creation strategy is sound, and we’re excited at the
