What is the news report mainly about? [originaltext]This is an emergency announc

This is an emergency announcement for residents in Springville.(74)I would like to announce an emergency evacuation.(75,76)All people currently in Springville must evacuate the area within the next three hours. A strong earthquake with a magnitude 7.0 has just occurred at the bottom of the ocean. A huge tsunami is expected to occur because of this earthquake, which can devastate costal regions.(75)Therefore, please calmly collect your personal items and evacuate Springville immediately. Springville is now experiencing high-speed winds as well as extreme lightning and thunderstorms. The weather forecasters predict that the heavy rainfall will not let up for another two days. I repeat. This is an emergency. Right now, residents are advised to go to neighboring towns where community shelters are available.