The 2017 Atlantic Hurricane Season was a near average season.
June and July
In early June, a tropical wave developed into a Tropical Depression in the Yucatan Channel. It initially stayed weak for a day, and then strengthened into Tropical Storm Arlene. Arlene then went on to strengthen into a 60 mph storm and landfall right in Mobile, Alabama. It did relatively little damage, even though some of it was notable. It eventually dissipated in the central part of the state.
A tropical wave had developed in the Caribbean Sea on June 14. The National Hurricane Center (NHC) issued a Tropical Weather Outlook (TWO) on the wave, giving it a "slight" chance of development. As it continued to move west, it did not look like this was going to change. The wave, however, did organise more within the next 24 hours, prompting a "medium" chance of development to be issued on the new invest, dubbed 91L (There had been another in April). As 91L continued, it looked more and more like it was going to become a Tropical Depression. On early June 17, the wave entered the Yucatan Channel, and reconnaissance aircraft entered the system, and found a closed low level circulation in the system. Due to this, at 11:00 AM, the system was dubbed Tropical Depression One. It was moving slowly to the north, and its outermost bands were bringing heavy rain to Mexico and Cuba. It did not strengthen at first, but was forecasted to. In the morning hours of July 18, the depression strengthened into Tropical Storm Arlene. Arlene was moving into the Gulf of Mexico, but it encountered unfavorable conditions, and weakened back to a tropical depression in the afternoon. However, this was very brief. Tropical Storm Warnings were placed on the Louisiana and Mississippi coast, as it was getting close. However, it suddenly slowed down as the outer bands moved onshore on early July 19. It moved very close to Louisiana; however, it suddenly turned northeast, and began to aim for Mobile, Alabama. It rapidly strengthened to its peak strength. On July 20, it made landfall right in Mobile, Alabama, causing damage in the city. Storm surge from Mobile Bay slightly flooded the city. Some tree damage occurred, and power went out across the city. However, Arlene quickly began to weaken onshore. It weakened to a Tropical Depression on early July 21. It quickly weakened to a remnant low. Arlene caused $400 million dollars in damage, and killed 5 people.
A tropical wave moved off the African coast on July 27. It began rapidly speeding off to the west. It entered favorable conditions as well. The storm began to intensify. It was given a medium chance of development by the NHC later that day. As it continued, it began to organize better, gaining convection around the center. The next day, it became even better organized, as the NHC upped its chances to a "high" chance. Invest 93L, as it was dubbed, was not expected to hit land. 93L had very good conditions to organize in, and early in the morning of July 29, the invest organized into Tropical Depression Two after satellite confirmed that there was a organized circulation inside the system. Two was moving northwest, and was beginning to strengthen. By the end of that day, Two strengthened into Tropical Storm Bret Still causing no harm, Bret continued the next day, with little strengthening occurring. One person in the U.S. Virgin Islands died due to a rip current. On August 1, Bret reached its peak of 50 mph. It quickly began to weaken as it interacted with shear. Hurricane Hunters reported the weakening was rapid, and throughout the night Bret's structure fell apart. It was declared a tropical depression the morning of August 2. At noon, it was declared a remnant low. The remnants managed dove southwest and caused a soggy couple of days in the Lesser Antilles. Bret only killed 1 person, as mentioned above, and caused no damage.