1. On August 3, 1955, Hurricane Connie made landfall in Connecticut, causing significant damage to homes, businesses, and infrastructure. The storm brought heavy rain and strong winds, leading to flooding and power outages across the state.

2. In 1910, Connecticut became the first state in the country to pass a law requiring mandatory automobile insurance for all drivers. The law was intended to ensure that victims of car accidents would be compensated, and it became a model for other states to follow.

3. August 3, 1780, was a significant day in the American Revolution, as the Battle of Groton Heights was fought in Connecticut. British troops attacked the fort, killing more than 20 soldiers and civilians in what was one of the bloodiest battles of the war.

4. On August 3, 1876, famous author and humorist Mark Twain visited Connecticut's capital city of Hartford, where he would later settle with his family. Twain had a strong connection to the state and often wrote about the people and places he encountered during his travels.

5. The USS Connecticut, a nuclear-powered submarine, was commissioned by the United States Navy on August 3, 1998. The submarine, which is still in active service, is one of the most advanced and powerful vessels in the Navy's fleet.