Over the city of Tampa Bay a big thunderstorm was developing around 12.15 pm 07/09/2002. A jet flight came out from the storm flighting East to West (from Tampa to Clearwater over the bay)losing altitud to fast with a red lights on permanently, located under the pilot cabin and in the two wings.I was in the smoking area of FACS GROUP where I work and saw the plain landing in aparent emergency behain a chain of tree at 12.28 pm, that don't let us saw where exactly land it. I was waiting for the explosion, but never we hear any noise.Ten minutes later a group of coast guard helicopters, the police and the fire personal cheking the area, but apparently they don't founded nothing.