Severe thunderstorms developed over the south-east coast and Darling Downs: 100 km/h wind gust and marble sized hail observed at Amberley; 20c coin sized hail reported west of Toowoomba; Lots of hail at Kooralbyn; Marble sized hail at Yamanto; Golf ball sized hail at Boonah; Golf ball sized hail at Harrisville; 4cm hail at Ipswich; "Lots" of 1-2cm hail at Karalee - it continued to fall for 10 minutes.