Natural disasters & its impact on India and role of CDRI : News & discussion

Mumbai rains: Possibility of floods, says IMD official; 'stay indoors, stay safe', say police
Heavy downpour continued to wreak havoc in Mumbai today. Several areas including Chembur, Parel, Hindmata, Wadala and Worli reported water-logging. Rail and bus services across the city were severely affected. The India Meteorological Department (IMD) predicted that heavy rainfall will continue in the financial capital and neigbouring areas even on Thursday. Maharashtra chief minister Uddhav Thackeray urged the citizens to stay indoors and venture out only for essential work."Since @Indiametdept predicts heavy rains will continue till tomorrow, CM has appealed to the citizens to stay home and venture out only if essential," a tweet from Maharashtra chief minister's office read.

Thackeray took stock of the situation and asked the Brihanmumbai Municipal Corporation (BMC) to coordinate with the police and railway authorities, health machinery and the National Disaster Response Force (NDRF) to ensure that citizens do not face any hardships.

Here are all the latest updates of Mumbai rains:
1) Prime Minister Narendra Modi spoke with Uddhav Thackeray about the prevailing situation in Mumbai and surrounding areas due to heavy rains and assured all possible support, the Prime Minister's Office said.

"Prime Minister Narendra Modi spoke to Maharashtra CM Shri Uddhav Thackeray regarding the situation prevailing in Mumbai and surrounding areas due to heavy rainfall," the PMO tweeted.

2) Mumbai police have also issued a statement asking people to remain at home as heavy rains lashed the city. "We request Mumbaikars to stay indoors and not venture out unless it is extremely essential. Practice all necessary precautions and do not venture out near the shore or waterlogged areas," said the Mumbai Police.

"Please #Dial100 in any emergency. Take care & stay safe Mumbai," the city police added.

3) India's financial capital received extremely heavy rainfall today. Colaba recorded 22.9 cm while Santacruz recorded 8.8 cm of rainfall, according to the India Meteorological Department.

4) Strong winds with speed reaching 70 Kmph along the coast was witnessed today. The weather department said, "Strong winds with speed reaching 70 kmph along and off the Mumbai and adjoining Konkan coast likely to continue till 6th morning and gradually reduce thereafter. Extremely heavy rainfall is also likely to continue over Mumbai tonight and reduce from tomorrow 6th August," the IMD special bulletin said.

5) The roof of the iconic DY Patil cricket stadium in Navi Mumbai was severely damaged by the rains and gusty winds, according Nerul police station personnel

Sanjay Kumar, Commissioner of Navi Mumbai Police, said, " Huge Damage to one of iconic stadiums DY Patil stadium".

6) A 38-year-old man allegedly died of electrocution in an inundated area in the western suburb of Dahisar. Shambhu Jagdish Soni was found dead on the water- logged streets of Anand Nagar locality by some passersby in the morning hours, an official said. The deceased, who worked at a tile manufacturing unit, was on his way to work in the rains when he got electrocuted, he said.

7) Heavy downpour on Wednesday toppled the signage on top of the Bombay Stock Exchange (BSE) in Mumbai, Ashish Chauhan, managing director and chief executive officer, BSE said. "We are seeking the help of fire brigade to ensure that the signage doesn’t fall to the ground and injure any one or create property damage for any one. Please bear with us," BSE CEO said.

8) Water entered the state-run J J Hospital in Mumbai's Byculla area. "The rainwater entered the ground floor late afternoon, forcing us to shift some of the patients and equipment," said a resident doctor. "The authorities are trying to pump out the water but the water is not receding quickly as rains are unrelenting," he added.
9)There is possibility of floods in the city and suburbs, an IMD official said today.

"Very intense development seen over west coast with monsoon vigarous on North Konkan; Mumbai, Thane, Raigad & Palghar. Ghat areas of Maharashtra also to recv Extremely heavy RF next 24 hrs. Mumbai already recorded RF 100 mm in last 6 hrs. Possibilities of floods in city & Suburbs," IMD Mumbai centre's deputy director general K.S. Hosalikar said on Twitter today.

10) Due to heavy rains and water-logging, the railway authorities have suspended the suburban train operations between Chattrapati Shivaji Maharaj Terminus-Vashi stations on the Harbour line, Chattrapati Shivaji Maharaj Terminus-Kurla on the Main line and also between Churchgate and Kurla.

All local train services between Churchgate and Mumbai Central stations have been temporarily suspended till further orders, the Western Railway said on Twitter.

11) NDRF on Wednesday evening rescued some 150 passengers from a local train stranded between Masjid Bunder and Byculla stations on the Central line here, said an official. While 150 passengers in this train were rescued, another 100 were still inside, the NDRF official told news agency PTI in the evening.

The other local which had come from Karjat got stuck 60 metres outside Masjid Bunder, he said. Around 60 passengers were inside and a rescue team had been sent, he added, according to PTI.

12) Three high capacity cranes deployed at the Jawaharlal Nehru Port Trust (JNPT) in adjoining Raigad district collapsed due to gusty winds in the afternoon, according to official. "Due to high-speed winds, three key cranes fell at one of our terminals, but no one was injured in the incident," Sanjay Sethi, chairman of JNPT told news agency PTI.

11) The catchment areas of four dams — Varasgaon, Khadakwasla, Panshet and Temghar — which provide water to the city received good rainfall. The Koyna dam in Satara district of western Maharashtra, which generates around 2,000 MW of power, received as much as 6 TMC water in just 24 hours due to heavy showers in its catchment areas.

Mahabaleshwar (a hill station in Satara district) received 320 mm rainfall followed by Koynanagar and Navaja, which received more than 230 mm rainfall each, an official said.
 

Colder, harsher winter likely in India this year due to La Nina conditions: IMD​

New Delhi: The night temperature in Delhi in October was the coldest recorded in the month in 58 years. The residents of the national capital have been feeling the chill before the usual onset of winters.

Delhi's Safdarjung observatory recorded an average of 17.2 degree temperature in October. In Jammu and Kashmir, Srinagar recorded temperature near zero on October 27. Cold winds from Jammu and Kashmir have even pushed the temperature in parts of north Maharashtra below normal.

In northern parts of Madhya Maharashtra like Pune and Nashik, La Nina may cause temperatures to falle below normal. On Saturday, Ludhiana in Punjab recorded the same temperature as Pune, while Dehradun was colder at 14.3 degrees Celsius.

La Nina effect​

The India Meteorological Department (IMD) predicted last month that winter this year will likely be colder due to La Nina conditions. "As weak La Nina condition is prevailing, we can expect more cold this year. The El Nino and La Nina conditions play a dominant role if you consider the large scale factor for the occurrence of cold wave conditions," IMD’s Director-General Mrutunjay Mohapatra was quoted as saying by PTI.

"La Nina conditions are favourable for cold wave conditions, while El Nino conditions are unfavourable for it," he said.

The increase in the La Nina impact during November and December will likely bring down the night temperature in North India and parts of Madhya Maharashtra, bringing longer colder winters.

La Nina is a climate pattern that describes the cooling of the Pacific waters, while El Nino is characterised by unusually warm ocean temperatures. Both factors are also believed to have an impact on the Indian monsoon.

30 Indian cities likely to face acute water risks by 2050: WWF​

From taps running dry to flooding, cities could face dramatically increased “water risks" unless urgent action is taken to mitigate and adapt to climate change, shows a WWF survey released on Monday.

According to the scenarios in the WWF Water Risk Filter, 100 cities that are expected to suffer the biggest rise in water risk by 2050 are home to 350 million people, and nationally and globally important economies. Nearly 50 cities in China, and 30 in India, including Delhi, Jaipur, Indore, Amritsar, Pune, Srinagar, Kolkata, Bengaluru, Mumbai, Kozhikode and Vishakhapatnam, are such high-risk regions.

Cities across India have been facing acute shortage of water due to rapid urbanization, climate change and lack of appropriate infrastructure, which continues to put stress on the existing infrastructure. Over the last few years, cities from Chennai to Shimla, have faced an acute crisis of water supply.

Problems such as lack of rainwater harvesting, which is key for water conservation, have been highlighted by Prime Minister Narendra Modi in his Mann Ki Baat radio address. He said only 8% of rainwater is saved in India.

“The future of India’s environment lies in its cities. As India rapidly urbanizes, cities will be at the forefront both for India’s growth and for sustainability. For cities to break away from the current vicious loop of flooding and water scarcity, nature-based solutions like restoration of urban watersheds and wetlands could offer solutions. This is our chance to re-evolve and re-imagine what the future of the cities could be," said Sejal Worah, programme director, WWF India.

The study said multi-stakeholder engagements and ownership involving local communities will be key to creating and conserving sustainable water infrastructure and rejuvenating urban freshwater systems. It added that urban planning and wetland conservation needs to be integrated to ensure zero loss of freshwater systems in urban areas.

The survey added that while improving urban water infrastructure and cutting water consumption will help reduce water risks, nature-based solutions including restoring degraded watersheds, reconnecting rivers to their floodplains, and restoring or creating urban wetlands are critical.
 

16 years of Indian Ocean tsunami: What India has learnt​

December 26 marks the 16th anniversary of the massive Indian Ocean tsunami. On this day, a 100-foot high tsunami triggered by an earthquake of magnitude 9.1, one of the largest ever recorded, from under the Indian Ocean killed more than 230,000 people in South Asia. With the epicentre near Sumatra, Indonesia, the earthquake triggered a tsunami that hit Thailand, Sri Lanka, India, Indonesia.

A tsunami researcher and forecaster with the National Oceanic and Atmospheric Administration Center for Tsunami Research, Vasily Titov cites the destructive capacity of the 2004 tsunami to the earthquake in the megathrust fault, ‘where heavy oceanic plates subduct beneath lighter continental plates’. “They are the largest faults in the world and they’re all underwater,” History reported him saying. He added that the tsunami waves could be seen like a large pebble falling in the ocean causing mega ripples.

The Sumatra earthquake and tsunami are considered to be an eye-opener for India as it introduced the Indian coastline to tsunami and its destructible power. Learning from the unprecedented natural disaster that led to such heavy damage to life and property, the Ministry of Earth founded the Indian Tsunami Early Warning System (ITEWS) at Indian National Centre for Ocean Information Services (INCOIS), Hyderabad in October 2007.

Scientists in India are now able to predict and project movements in Indian ocean through real-time seismic monitoring with Bottom Pressure Recorders (BPR), tide gauges and 24x7 operational tsunami warning system to detect tsunamigenic earthquakes as to provide early advisories to the most vulnerable.

A community performance-based programme known as Tsunami Ready has also been started by the Intergovernmental Oceanographic Commission (IOC) of UNESCO to promote tsunami preparedness by actively involving the public, community leaders, and national and local emergency management agencies. As part of the UNESCO-IOC framework, the ITEWC now offers advisories to all Indian Ocean rim countries.

India is the first country to establish an early warning system for tsunami detection, while Odisha is the first state in the country to get Tsunami Ready recognition.