°An unexpected natural or man-made catastrophe of substantial extent causing significant physical damage or destruction, loss of life or sometimes permanent change to the natural environment.
°An unforeseen event causing great loss, upset or unpleasantness of whatever kind.
°An unexpected natural or man-made catastrophe of substantial extent causing significant physical damage or destruction, loss of life or sometimes permanent change to the natural environment.
°An unforeseen event causing great loss, upset or unpleasantness of whatever kind.