BOLT Realtime Thunderstorm Tracking

BOLT (Broadband Observation network for Lightning and Thunderstorms) is a low frequency thunderstorm tracking system.  Currently, the experimental network is deployed around Osaka, Japan, consisting of about 12 flash plate electric field change sensors.  BOLT has an operational range of about 200 km from the center of the network, and can map lightning flashes in 3D.  Realtime operation is possible, and indeed operational.  The realtime display is currently undergoing a major upgrade.  The legacy realtime display can be seen here

The new realtime display uses a google maps interface, so that you can pan and zoom, and monitor the areas of Japan you are actually interested in.  The beta version of this display can be seen here

 In case there doesn't happen to be any lightning over Japan just now, below is a short video of April 15th, 2015 when there was.  The video updates every 2.5 minutes, and shows a total of 1 hour of lightning data. 

In the above display, the grey regions show the "flash extent density" for the last hour.  That's really just a fancy way of saying the total area of all flashes located.  It's there to give you an idea of where the storm is.  The red dots are showing where lightning is now.  When lightning happens, 1 red dot shows up for each flash (even though BOLT locates many sources for each flash).  They start out bright red, and then fade away over 30 minutes.

This display will be undergoing regular updates for quite some time to come.  Expected upgrades include addition of an archive, and the ability to overlay the output from the phased array weather radar which is also operated by Osaka University.