Whoa ..oh!!!! Tokyo is putting all efforts to become an unforgettable and mesmerizing host of 2020 Olympics. We all know that how hard japanese work and also how well they work. Proving the above statement , Japanese researchers are developing a system to accurately forecast torrential downpours (guerilla rainstorms ) -30 minutes before they strike. So,that it may not create chaos during Olympic events . Scientists have created a high - tech radar capable of producing a 3-D map of a rain cloud in just to 30 -60 seconds that is an improvement on the existing systems which take upto five minutes while measuring a fraction of it only. Radio -waves are providing an estimate about the amount of water vapour in the air .Thus,making a more accurate forecast. Being a nation which frequently experiences severe natural disasters as it is one the most seismically active regions in the world and thus killing a dozens o...