Cold case investigation - ball lightning? - South Australia

Following on from an earlier post about green fireballs and ball lightning, I decided to take a look at my listing of South Australian UFO reports to see if there were any that could be connected to ball lightning.

I found the following:

1. 1994 Tailem Bend
A loud whistling noise was heard, and 3-4 seconds later an "electric blue" object passed overhead. Later, a tree on the property was found to have exploded. The event occurred during an electrical storm. Possible ball lightning. (UFORSA94002.)

2. 13 October 1996 Hawthorndene, Adelaide
At 2145hrs local time a loud rumbling noise like thunder was heard. A witness went to her backyard to take a look and saw a glittering or glowing, green light, some 50 metres away and only 10 metres off the ground. The light was initially stationary, and seemed some 30-45cms in diameter. She watched it for a very short time and then called for her brother to come take a look. However, by the time he arrived the light had departed. Total duration 5-6 seconds. (UFORSA.)