Here's a update story from the BBC and a image/Picture of Asteriod 2004 HF provided by the Starkenberg Observatory
in Germany.
http://news.bbc.co.uk/1/hi/sci/tech/3523200.stm It will come close to the Southern Atlantic region, Nasa and others are saying it will miss, but if it does hit earth our atmosphere will destroy the small asteriod,etc...
Is there a chance a Tsunami would occur , if it is destroyed in our atmosphere over the Southern region of the Atlantic ?, If so ? What kind of waves are we looking at ? 5 feet, 10,20 + ???
God, I hope it miss us period !!!!
If it is only a 100 or so feet accross then there is nothing to worry about with an ocean inpact. Now if it was 1,000 feet accross then a serious wave could result.