In December 2014 we upgraded our lightning network to the latest in sensor technology as used by the world's leading meteorological agencies. This has resulted in changes and improvements to the lightning data you will now see. The main changes are:
Distance and latitude/longitude coordinates are displayed when you mouse over the map. The origin for distance measuring is indicated by a red dot and defaults to either your location, if specified and in range, or the location of the radar/the centre of the map. The origin may be changed by clicking elsewhere on the map.
Lightning data supplied by GPATS
LocationRAAF Base Tindal Radar TypeWSR 81C-8 C Band Typical Availability24 hours
The Tindal radar is located on a small hill and offers a good view in all directions and no permanent echos are evident. The appearance of "false echoes" or Anomalous Propagation (AP) is generally limited to occasions where there are significant temperature inversions (in normally stable conditions) in the lower atmosphere. AP can fluctuate rapidly from one image to the next as the inversion is forming or dissipating, however, it has a quite static appearance and can normally be distinguished from "real" echoes which exhibit some movement and a definite life cycle of development and decay. RAAF aircraft operating in the area, particularly to the west and southwest, can drop "chaff" which will give a weak radar return. Such echoes normally dissipate quickly, seldom lasting longer than 15 to 20 minutes. The radar can suffer some attenuation loss during heavy precipitation events. In these instances, the leading echoes are normally displayed at "true" intensity, while trailing echoes may be displayed at a lower intensity due to some loss in signal strength. It is rare to observe echoes at a range greater than 300 km. The display of echoes at 300 km is indicative of the upper structure of a storm exceeding 12 km in height, however, echoes from storms at that distance may not display accurate intensities since the radar beam is generally directed above the most intensive part of the storm.
00:30 EDT Locals on the Cocos Islands have spent Christmas Day hunkered down in their homes, as Tropical Cyclone Kate passed just north of the tiny community more than 2,000 kilometres off the West Australian coast.