Complex sentence: Seven shelters were opened on Tobago, where about 560 people evacuated for the storm; most evacuees were from low-lying areas, and on the day of the storm's passage most schools and businesses were closed.
Split into simpler sentences: Seven shelters were opened on Tobago, where about 560 people evacuated for the storm. Most evacuees were from low-lying areas, and on the day of the storm's passage most schools and businesses were closed.