Though there was no damage reported, the tsunami warning brought back unpleasant memories in Chennai. In Kolkata, cracks appeared in some houses and metro services were suspended for over 45 minutes.
Earthquake information: Here is a factbox showing the 10 strongest earthquakes recorded since 1900, by order of magnitude as Indonesia issued a tsunami warning after a huge 8.7 magnitude earthquake struck off its westernmost province of Aceh on Wednesday.
I had just sat down with a map of Langkawi in the balcony of my 3rd floor room to plan out my day when a series of massive tremors struck. The furniture, the bottle of water on the table, even huge clear panels of glass around the resort's restaurant directly overlooking the sea were shaking, they looked like they may just shatter.
Two massive earthquakes triggered back-to-back tsunami warnings for Indonesia on Wednesday, sending panicked residents fleeing to high ground in cars and on the backs of motorcycles. There were no signs of deadly waves, however, or serious damage, and a watch for much of the Indian Ocean was lifted after a few hours.
LATEST: India withdraws tsunami warning after earthquake off Sumatra coast
Latest: No tsunami threat from aftershock of 8.2 magnitude that hit Aceh in Indonesia
Odisha Chief Minister Naveen Patnaik has called an emergency meet after a tsunami alert was sounded in six coastal districts of the state.
In India, tremors were reported in Mumbai, Kolkata, Bangalore, Chennai and all along the east coast. The tremors lasted for a few seconds. No damage has been reported so far.
Indonesia has issued a fresh tsunami warning after an aftershock with a preliminary magnitude of 8.2 shook its western coast.
The international airport on the southern Thai tourist island of Phuket was closed on Wednesday after a tsunami warning was issued following an 8.7 magnitude earthquake off the coast of Indonesia, its director said.
One IL-76 military transport aircraft leaving Chandigarh for Chennai with National Disaster Relief Force (NDRF) teams. Two smaller AN-32 transport aircraft on standby in Bangalore.
Fresh 8.2 magnitude aftershock hits Indonesia - USGS
Indonesia's geophysics agency has reported aftershocks in Aceh, 8.2 on the Richter scale.
Chennai beaches have been evacuated; new tremors were felt a few minutes ago.
Pooja isin Phuket scouting locations for Jism 2. Shejust called saying that the Tsunami is about to hit Phuket. The Occean is receding.
- Mahesh Bhatt(@MaheshNBhatt) April 11, 2012
At Kalpakkam, Tamil Nadu, the nuclear plant is functioning normally. The emergency centre was activated after the quake and tsunami, but the reactor is producing electricity normally.
Six National Disaster Relief Force teams of 40 people each are on the ready with equipment at Hindon, near Delhi, and in Chennai for a quick airlift to the Andamans if necessary.
The new heavy lift aircraft, the C-130 J of the Indian Air Force is ready to fly too.
Officials in the Andaman and Nicobar Islands prepped for evacuation procedures though by 5.30 pm, an all-clear is likely to be formally announced.
Maharashtra Chief Minister Prithviraj Chavan has said there is no threat to Mumbai or the rest of the state. But, he said, till there was a tsunami alert in place people must be careful. In Mumbai tremors were felt 155 km offshore.
Anchored ships in the Andamans have been told to move to high seas.
A tsunami watch was issued for Nicobar Islands, suggesting that a tsunami could strike that Indian group of islands immediately after the Indonesia quake; over an hour later, the good news is that there has been no tsunami yet. But the Andaman and Nicobar Islands are on full alert.
The Aceh earthquake 's magnitude has been revised to 8.6 on the Richter Scale.
The Kolkata Metro suspended operations at 2.42 pm as a precautionary measure. Metro services resumed at 3.30 pm.
India is one of the biggest importers of Indonesian coal. Shares of power producers who import coal from Indonesia witnessed sharp sell off after the news of the earthquake.
- Earthquake of magnitude 8.7 on Richter scale hits Aceh, Indonesia
- Tremors felt in Chennai, Ooty, Bhubaneshwar, Kolkata
- Tsunami alert for 28 nations
- Tsunami alert in Indian Ocean after earthquake in South-East Asia
- Standard drill activated, Andaman & Nicobar islands on full alert
- Andaman Nicobar Chief Secretary to NDTV: Alert but no warning as yet
- US Geological Survey: Possibility of major Tsunami low
- Anchored ships in Andamans told to move to high seas
- Civilians told to shift to higher ground in Andaman, Nicobar
- People told to move away from Andaman, Nicobar coastline