(Reuters) - The following is a summary of analysts' assessments of the likely economic impact of the devastating earthquake and tsunami that struck the northeast coast of Japan.
Most assessments were published before the latest explosion at a quake-hit nuclear plant caused the release of radiation and prompted some people to flee Tokyo.
* The bank revised down its Q1 and Q2 growth forecasts for Japan's economy to 1.7 percent and 0.5 percent respectively, from previous growth forecasts of 2.2 percent in each quarter; in Q3 and Q4, estimates were raised to 4.0 percent and 2.5 percent from 2.5 percent and 2.0 percent, respectively
* Full-year growth in 2011 was revised down to 1.4 percent from 1.7 percent; 2012 growth estimate revised up to 2.0 percent from 1.8 percent.
"The economic cost of the disaster will be large. There has been substantial loss to economic resources, and economic activity will be impeded by infrastructure damages (like power outages) in the weeks or months ahead. However, the rebuilding effort will be a significant boost particularly in H2."
* Based on preliminary estimates, Japanese real GDP growth could be cut by 0.2 to 0.5 percentage point this year and boosted by 0.2 to 0.5 percentage point next year.
* Rough estimates suggest that the negative impact on global growth this year will be negligible -- at most in the 0.1 percent to 0.2 percent range, with a correspondingly small boost to growth next year.
On the GDP outlook: "If the nuclear crisis turns into a full-blown catastrophe, then the negative effect on growth this year will be much larger."
"The big uncertainty about this disaster (and what sets it apart from other such disasters) is that roughly 10 percent of electricity generation capacity (both nuclear and coal) may be off line for a few months, until oil- and gas-fired plants can ramp up. In the near-term, this could have major negative ramifications for the Japanese industrial sectors; some steel and automotive factories have already been closed."
* Total economic losses could be 14-15 trillion yen, less than half that of the 1995 Kobe earthquake; recovery could cost 4-5 trillion over next three years
* Initial disaster relief could cost 2 trillion yen, mostly funded from contingency reserves so only limited need to increase Japanese government bond issuance
* Cuts 2011 growth rate estimate by 0.2 percentage points but sees a "decent risk" of 0.5-1.0 percentage point hit to Japanese growth this year
* 5-10 trillion yen (up to $122 billion) in damage to
housing and infrastructure
* Growth to be slower than previously forecast in H1, but
faster in H2 because of reconstruction
* 2011 GDP growth forecast: 1.7 pct (unchanged)
* 2012 GDP growth forecast: 2.3 pct (up from 1.9 pct)
"It may be too early to discuss how much damage was done to housing and infrastructure, but we suspect it could match that of the Great Hanshin Earthquake in 1995.
"Some of the damage will likely generate reconstruction demand and bolster activity in the coming months as actual restoration begins."
* 2011 GDP growth forecast: 1.4 pct (down from 1.5 pct)
* 2012 GDP growth forecast: 2.5 pct (up from 2.1 pct)
Duncan Wooldridge, chief Asia economist at UBS in Hong Kong:
"It remains to be seen, but I would think the impact most likely would be temporary. So you will have a drop in economic growth, but after that, of course, a recovery process.
"Because of disruptions to power supplies and transport, you to tend to find drops in (economic growth). But as that infrastructure is repaired in the months ahead, you get a re-acceleration in economic growth. This is by far the most likely outcome.
* Losses of 15 trillion yen, or 3 pct of GDP
"The final damages are expected to exceed those from the Kobe earthquake. As noted above, there is also a need to consider the potentially negative impact on other regions due to the Tohoku region's "trade economy" character.
"Earthquakes not only curb effective demand (eg. consumption, capex) but also lower potential growth through damage to tangible fixed assets and human capital. In terms of the CPI, we believe the impact will be neutral."
* Power cuts to subtract 0.29 pct from nominal GDP
"Based on what occurred after the Kobe earthquake, we think an all-out slump in the Japanese economy caused by the Sendai earthquake is overly pessimistic. However, a V-shaped recovery supported by a rapid upturn in demand driven by rebuilding work in the affected areas is also unlikely.
"We now expect the Japanese economy to take longer than we expected to exit its current soft patch owing to the earthquake and tsunami.
"The consensus forecast on the timing for this exit was Jan-March 2011, while we had projected April-June. However, we now think July-September or possibly October-December is more likely. We expect solid economic recovery to be confirmed in October-December."
STANDARD CHARTERED BANK
* Rebuilding costs to be at least 1 percent of GDP
* Likely to see negative GDP growth in the first quarter
"Provided that the authorities can successfully contain a nuclear-plant crisis, we now expect most economic activity to take a substantial hit in March/April but to rebound in the following months.
"In terms of assessing the damage, this is still a developing situation. It is now feared that energy rationing could continue until the end of April. This, plus damage to supply chains, could hit production even for companies far removed from the scene of the disaster.
"Also, confidence is fragile, and there are fears that the situation at the nuclear plants may deteriorate. If so, this could hit confidence further."
* Reconstruction costs may hit 3 percent of GDP
"The Bank of Japan announced to double its asset purchase program on Monday. Meanwhile, it injected a record 15 trillion yen into the banking system to ease liquidity concerns. The additional easing action taken by the BOJ is likely to turn Japan's inflation slightly positive in the near future.
(Compiled by Kevin Yao; editing by Vidya Ranganathan)