There was an intense but possibly brief storm cell that passed over SYD at about 1730 hours on Sunday 12 February 2017.
ZL472, the 1640 hours from GFF took off only about 10 minutes late at 1705 but due to being placed in a holding pattern is not expected to arrive until about 1836, 36 minutes late (SAAB340B VH-ZLA), while ZL629 from BHS to SYD, the 1655 that was airborne at 1733 should pull in at roughly 1853, 68 minutes late in the shape of VH-ZLG.
ZL674 from WGA up to SYD should arrive at 1851, 31 late with VH-ZRL.