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haarp is/are the High-Frequency Active Auroral Research Program, a scientific endeavor aimed at studying the ionosphere and its potential for enhancing radio communications and surveillance technologies.

The highest category hurricane is/are Category 5 hurricanes, characterized by maximum sustained wind speeds of 157 mph (252 km/h) or higher, causing catastrophic damage.

A hurricane is a type of tropical cyclone characterized by a low-pressure center, strong winds, and heavy rain, typically forming over warm ocean waters.

RCS messaging is a messaging protocol designed to replace SMS and MMS with more advanced features, such as read receipts, typing indicators, and the ability to send multimedia content.

Storm surge is an abnormal rise in sea level accompanying a hurricane or other intense storm, which can cause extreme flooding in coastal areas.