The Fire's match against NSW was abandoned without a ball being bowled this afternoon, meaning the result of the day/night clash between South Australia and the ACT in Adelaide would determine whether Queensland would go through to the decider.
South Australia produced a competitive score of 261 at Karen Rolton Oval, but the ACT Meteors held their nerve to win by three wickets.
The Fire had a little help from a familiar face as well. WBBL Heat pace bowler Nicola Hancock hit two important sixes late in the run chase to ensure the ACT did not falter in their pursuit.
Queensland will travel to Melbourne later this week to take on Victoria, which lost both of their matches against WA in Perth this week.
Queensland has never won the Ruth Preddey Cup, being runners-up on six occasions, and last contested the Final in 2018-19 when NSW defeated them in the decider at North Sydney Oval.
The two teams have also never met in a WNCL Final, with NSW's record of contesting the decider every season for 24 years finally coming to an end this season.