Tanzanian residents react to the empty beaches and closed businesses after the government issued a warning for people to exercise caution ahead of an incoming Tropical Cyclone Hidaya. East Africa is highly vulnerable to climate change and this year's rains have been amplified by the El Nino weather pattern -- a naturally occurring climate phenomenon typically associated with increased heat globally that leads to drought in some parts of the world and heavy downpours elsewhere. IMAGES AND SOUNDBITES