<p>A tango by two low-pressure weather systems over peninsular India brought copious amounts of rain to Kerala, leaving parts of the coastal state submerged.</p>.<p>The interaction between the two weather systems which originated over the Bay of Bengal and the Arabian Sea strengthened the south-west monsoon westerly winds resulting in downpour over Idukki, Kollam and Ernakulam.</p>.<p>India Meteorological Department Director General Mrutyunjay Mohapatra dismissed <a href="https://www.deccanherald.com/national/south/kerala-flash-floods-landslides-caused-by-mini-cloudburst-claims-expert-1041490.html" target="_blank">suggestions of a cloudburst</a> as a possible cause for heavy rains that triggered landslides in parts of the state leaving at least 21 persons dead.</p>.<p>“This interaction of low pressure systems led to strengthening of southwest monsoon westerly winds near Kerala coast. The strong south-westerly winds interacted with the ghat areas resulting in heavy to very heavy rainfall over different parts of Kerala, especially over Idukki, Kollam and Ernakulam districts,” Mohapatra said.</p>.<p><strong>Also Read | <a href="https://www.deccanherald.com/national/south/heart-wrenching-sight-as-bodies-of-mother-child-hugging-recovered-beneath-landslide-debris-in-kerala-1041383.html" target="_blank">Heart-wrenching sight as bodies of mother, child hugging recovered beneath landslide debris in Kerala</a></strong></p>.<p>The heavy rains left several rivers in spate with many west-flowing rivers in Kerala still flowing above the danger mark.</p>.<p>According to the Central Water Commission (CWC), river Achankovil in Pathanamthita district was flowing above the danger mark with waters still rising at 7:00 p.m. on Sunday.</p>.<p>Rivers Manimala in Pathanamthitta district, Kallada (Kollam), Karamana and Neyyar in Thiruvananthapuram district were in severe situation.</p>.<p>Mohapatra said that there were two low-pressure systems, one over the Bay of Bengal and another over the Arabian Sea, and there was some kind of interaction between these two.</p>.<p>“While the Bay of Bengal low-pressure system moved west-north-westwards across north coastal Andhra Pradesh and adjoining south Odisha coast, the Arabian Sea system moved east-south-eastwards. And finally, the Bay of Bengal's low-pressure system moved towards Telangana and the Arabian Sea system reached Kerala coast on Saturday. As a result, there was maximum rainfall activity over Kerala under the influence of this low-pressure system,” he said.</p>.<p><strong>Check out latest DH videos here</strong></p>
<p>A tango by two low-pressure weather systems over peninsular India brought copious amounts of rain to Kerala, leaving parts of the coastal state submerged.</p>.<p>The interaction between the two weather systems which originated over the Bay of Bengal and the Arabian Sea strengthened the south-west monsoon westerly winds resulting in downpour over Idukki, Kollam and Ernakulam.</p>.<p>India Meteorological Department Director General Mrutyunjay Mohapatra dismissed <a href="https://www.deccanherald.com/national/south/kerala-flash-floods-landslides-caused-by-mini-cloudburst-claims-expert-1041490.html" target="_blank">suggestions of a cloudburst</a> as a possible cause for heavy rains that triggered landslides in parts of the state leaving at least 21 persons dead.</p>.<p>“This interaction of low pressure systems led to strengthening of southwest monsoon westerly winds near Kerala coast. The strong south-westerly winds interacted with the ghat areas resulting in heavy to very heavy rainfall over different parts of Kerala, especially over Idukki, Kollam and Ernakulam districts,” Mohapatra said.</p>.<p><strong>Also Read | <a href="https://www.deccanherald.com/national/south/heart-wrenching-sight-as-bodies-of-mother-child-hugging-recovered-beneath-landslide-debris-in-kerala-1041383.html" target="_blank">Heart-wrenching sight as bodies of mother, child hugging recovered beneath landslide debris in Kerala</a></strong></p>.<p>The heavy rains left several rivers in spate with many west-flowing rivers in Kerala still flowing above the danger mark.</p>.<p>According to the Central Water Commission (CWC), river Achankovil in Pathanamthita district was flowing above the danger mark with waters still rising at 7:00 p.m. on Sunday.</p>.<p>Rivers Manimala in Pathanamthitta district, Kallada (Kollam), Karamana and Neyyar in Thiruvananthapuram district were in severe situation.</p>.<p>Mohapatra said that there were two low-pressure systems, one over the Bay of Bengal and another over the Arabian Sea, and there was some kind of interaction between these two.</p>.<p>“While the Bay of Bengal low-pressure system moved west-north-westwards across north coastal Andhra Pradesh and adjoining south Odisha coast, the Arabian Sea system moved east-south-eastwards. And finally, the Bay of Bengal's low-pressure system moved towards Telangana and the Arabian Sea system reached Kerala coast on Saturday. As a result, there was maximum rainfall activity over Kerala under the influence of this low-pressure system,” he said.</p>.<p><strong>Check out latest DH videos here</strong></p>