A star turn from spinner Jess Jonassen lifted Brisbane Heat to a 22-run win over Sydney Thunder and into the Women's Big Bash League (WBBL) finals. Pursuing 160 for 8, Thunder missed the mark with Jonassen trapping four wickets in Friday's apparatus at Adelaide Oval. Intensity's triumph in their last standard season game guaranteed they arrived at the finals - they were in third spot on 16 focuses. Thunder are fourth on 15 focuses with one game excess, two focuses clear of fifth-set Hobart Storms who likewise have one match left before the finals. In any case, Tropical storms would require a monstrous success over stepping stool pioneers Adelaide Strikers on Sunday to support their run-rate in front of Thunder, who meet Sydney Sixers in their last game before the end of the season games. The group that completions top will acquire direct passage into the last which they will have on December 2. The second-put side will have the Eliminator and Challenger finals. Jonassen was vital in Friday's success, taking 4 for 26 from her four overs, after Thunder openers Chamari Athapaththu and Phoebe Litchfield gave the Sydney-siders an energetic beginning. Yet, Thunder lost six wickets in an eight-over length to lose energy as Jonassen turned the screws. She guaranteed the critical couple of Athapaththu and Marizanne Kapp as the pursuit slowed down. Prior, Intensity's Bess Heath made 29 from 25 balls to top score during an in any event, batting exertion. Seven hitters made more than 12 with opener Georgia Redmayne (21 from 21), Amelia Kerr (20 from 17) and Laura Harris (19 from 9) making convenient commitments. Intensity's innings got done with a twist as Georgia Voll smacked a six in her quick fire 18 not out from just eight balls.