1. Hurricane Katrina made landfall in Louisiana on August 27, 2005. The storm caused significant damage to the state's infrastructure, resulting in the displacement of over one million residents.

2. Louisiana became the 18th state in the United States on August 27, 1812. The state was formed out of the Louisiana Territory, which was purchased from France in 1803.

3. On August 27, 1908, the first oil well in Louisiana was drilled by the United States Oil Company. This discovery led to the development of the state's oil industry, which has been an important part of its economy for over a century.

4. The first anniversary of Hurricane Katrina was commemorated with the "Louisiana Rising" concert on August 27, 2006. The event brought together over 100 musicians and performers to raise money for the victims of the hurricane.

5. On August 27, 1927, Louisiana experienced one of the worst floods in its history. The Great Mississippi Flood caused widespread damage and resulted in the displacement of hundreds of thousands of residents. The disaster prompted significant changes in flood control policies across the United States.