Heavy cloud and rain are likely to ruin the party for millions of people hoping to watch Wednesday's eclipse in
The Shanghai Meteorological Bureau bureau has predicted thunderstorms for when the longest solar eclipse of the 21st century starts at 8:30 am (0030 GMT), according to a forecast released Tuesday morning.
"It will be almost impossible to see the eclipse in
"Even if there is no rain, the heavy clouds will block the view," he said.
However people will still experience the sky changing from bright to dark, the report said.
The event is being described as a once-in-a-lifetime opportunity which, due to its trajectory over
A solar eclipse occurs when the moon is caught between the sun and the earth while each of them moves along their fixed orbits.
"This is a very important milestone. None of us will live long enough to see another one like it," said Federico Borgmeyer, the German-based manager of the specialist travel agency
The phenomenon has sparked a mini-tourism boom for
Thousands of tourists from around the world have already descended on
The next total solar eclipse will be on July 11, 2010 but far fewer people are likely to see it as it tracks across the South Pacific over French Polynesia and Easter Island to the southern tip of






