The Volts are in a commanding position in their Plunket Shield match with Canterbury.
Chasing a modest 239, the visitors were 192 for two at stumps with a day remaining.
The Volts need a further 47 runs to secure the win but will have one eye on the clouds. Rain is forecast for Christchurch this morning, although it is supposed to clear in the afternoon.
Hamish Rutherford and Brad Wilson put together a damaging 162-run stand for the opening wicket.
Wilson played the anchor role, getting through to 63 before he was caught and bowled, while Rutherford clouted eight fours and a six during a rapid innings of 90.
The Volts have already picked up five bonus points in the game but Neil Broom (23) and Rob Nicol (6) will resume with the opportunity to secure the 12 points on offer for a win.
''I'm not too concern about it [the weather],'' Otago coach Rob Walter said.
''We just need an hour's play at any point to be able to finish the game off.''
Walter left it to Broom and Nicol to decide whether to take the risk and go after the runs last night. However, he added it was not worth losing two quick wickets when you could come back and get the runs.
Canterbury resumed at 156 for four with Leo Carter on 24 and Cameron Fletcher on 39.
Otago needed an early breakthrough and got it thanks to wonderful piece of fielding from Broom. He hit the stumps from side on after Carter had pushed the ball out towards point and called Fletcher through for a quick single.
Brett Hampton went on the offensive, thumping three sixes and six fours before getting a leading edge on 60.
When Carter got a faint edge through to the keeper shortly after, Canterbury's hopes of building a more substantial lead evaporated.
Spinner Mark Craig shone with four for 87 and Neil Wagner (three for 72) wrapped up the innings when he nicked out Will Williams for 11.
At the Basin Reserve, Auckland's pain finally came to an end. It was dismissed for 286 in its second innings, gifting Wellington a win by an innings and 205 runs.
The game will be remembered for Auckland's capitulation for just 62 in its first innings, Michael Papps's monster innings of 316 not out and his record partnership with Luke Woodcock (151). The pair put on a New Zealand first-class record opening stand of 432.
There was excitement at Bay Oval as well, with Central Districts batsman Brad Schmulian announcing his arrival with a double century on debut.
He scored 203 from 207 balls to help dig his side out of a spot of trouble against Northern Districts. That allowed Central to declare at 313 for seven, conceding a first-innings deficit of 126 runs.
Northern Districts are 17 for one in their second innings.
