This performance came after beating a strong Hamilton side by one run with three balls remaining on Wednesday.
In Wednesday's game, Northland finished with 191-8 off their 40 overs with Lewis Miller making a strong 66 and Hamish Kidd (42) dragging Northland back from 24 for 3.
Tight bowling from Cullen Lowe (1-18) and two stunning run-outs from Lewis Miller had Northland in the box seat until Hamilton's middle order began to hit out. However, regular wickets and some great outfield catches kept the match evenly poised until the exciting climax.
Medium pacer Liam Wewege stepped up in the final over and rattled the stumps to claim Hamilton's last wicket with three balls to spare.
Kurt Oldridge and Hamish Kidd were the pick of the bowlers, finishing with 2-32 and 2-31 respectfully.
Northland Cricket's director of coaching, Stephen Cunis, said: "This win is a great reflection of the hard work that Karl Treiber, Roger Kidd and Richard Pooley have put in."
Yesterday, the third day of the tournament, Northland was to take on a strong Bay of Plenty Coastlands side.