"As far as issuance of severe weather warnings by the Earth System Science Organisation - Indian Meteorological Department (ESSO-IMD), there was no failure," Ministry of Earth Sciences (MoES) S Jaipal Reddy said in a written reply in Rajya Sabha yesterday.
"ESSO-IMS's Dehradun Centre had issued forecast of isolated heavy to heavy rains (12-24 cm) on June 15, 2013 for Kedarnath, Joshimath, Badrinath, Gangotri and Yamunotri for three days, including the advice to postpone the Char Dham Yatra accordingly to designated state-level authorities," Reddy said.
"Adding to this, continuous rains and snow melting caused waters in the Chorabari Lake to rise. The lake's weak moraine barrier gave way and a huge volume of water along with glacial boulders came down in its wake.
"Very heavy rainfall in the entire catchment regions of Mandakini, Alaknanda, Bhagirathi and other river basins further increased the magnitude of floods in the state," Reddy said.
In response to the disaster, further augmentation of observing systems network comprising of Doppler Weather Radars, Rain Radars, Automatic Weather Stations, Rains Gauges and snow gauges expansion had been formulated over the western Himalayan region, he said.