Here is a list of the likely impact of and response to the devastating earthquake and tsunami that rocked the northeast coast of Japan on Friday, and subsequent crisis at nuclear power plants.
Death toll
The death toll is expected to exceed 10,000, with northeastern prefectures of Miyagi, Iwate and Fukushima most severely hit. At least 4,314 people were confirmed dead, but 8,606 people are still missing, National Police Agency of Japan says on early Thursday.
Number of people evacuated
More than 440,000 people have been evacuated, NHK says. Hundreds of people are waiting for help in isolated areas and have no access to food.
Number of people without electricity, water
About 850,000 households in the north are still without electricity in near-freezing weather, Tohuku Electric Power Co. says. The government says at least 1.5 million households lack running water.
Number of building damaged
At least 87,894 buildings have been damaged, National Police Agency of Japan says. At least 7,400 buildings are completely destroyed, public broadcaster NHK says.
Impact on economy
Citigroup expects 5-10 trillion yen in damage to housing and infrastructure, while Barclays Capital estimates economic losses of 15 trillion yen (USD 183.7 billion) or 3% of Japan's GDP.
UBS expects Japan's economy to grow 1.4% this year, compared with its previous forecast of 1.5 %expansion. But it upgraded its growth forecast for 2012 to 2.5%, up from the previous estimate of 2.1%.
Goldman Sachs expects total economic losses is likely to hit 16 trillion yen, while it expects real GDP to decline by 0.5-2% in the second quarter.
Number of countries offering aid
According to Japanese foreign ministry, 114 countries and 24 international organisations have offered assistance. By Tuesday, teams from 14 countries/regions have arrived to help, though some have already left.
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