2021 Atlantic hurricane season (Vile)

The 2021 Atlantic hurricane season is tied with the 1933 season as the second most active Atlantic hurricane season on record. The season featured 20 named storms, 11 hurricanes, and 5 major hurricanes. This was the second of two very active hurricane seasons, the first being 2020. This season had activity both before and after the official start, a rare event last seen in 2007. The season officially began on June 1 and ended on November 30. These dates historically describe the period of year when most tropical cyclones form in the Atlantic basin and are adopted by convention. However, as shown by Tropical Storm Ana in May, the formation of tropical cyclones is possible at any time of the year. The season was very destructive, with three storms hitting the U.S at major hurricane force. These storms were Ida, Nicholas, and Sam.

Due to cool ENSO neutral conditions, and a developing la nina near the end of the season, activity was very high. The number of named storms was the highest since 2005, and there were many notable storms. In May, Tropical Storm Ana brought early showers to New England. In June, Hurricane Danny caused moderate damage in Texas as a Category 2 hurricane. In August, Hurricane Ida caused severe damage in Florida and Georgia. In September, Hurricane Mindy remained just offshore Florida as a major hurricane, causing high coastal flooding, and Hurricane Nicholas was the season's strongest storm, battering the Yucatan before making landfall in Texas. In October, Hurricane Peter caused disruption across a large portion of the basin, and Hurricane Sam struck Alabama as a major hurricane. In November, Hurricane Victor was a massive storm that caused devastation on the east coast.

Tropical Storm Ana
A non-tropical low moved towards the Northeast U.S in late April. Models began to show development in early May, so the NHC marked it for development, noting below average wind shear in the area, but SSTs were only lukewarm. Despite this, the low slowly began to show signs of development. Convection increased around a broad center. Subtropical Depression One formed on May 6, and was upgraded to Subtropical Storm Ana early the next day. Shortly after being named, Ana transitioned into a tropical storm. Wind shear began to increase however, but Ana managed to reach peak winds of 45 mph on May 8, before making two landfalls in Massachusetts. As it moved off the coast on May 9, Ana transitioned into a post-tropical cyclone, having caused only light coastal flooding.

Tropical Storm Bill
A disorganized, westward moving tropical wave entered the Caribbean on May 30. As it crossed the Caribbean sea, convection gradually increased as a spin was notable on June 2. The next day, rapid development occurred and Tropical Depression Two formed that day. On June 3, Two intensified into Tropical Storm Bill. In somewhat favorable conditions, Bill reached an initial peak intensity of 45 mph before making landfall on the Yucatan. Bill weakened to a Tropical Depression due to the interaction, but the storm's core tightened up. Bill entered the Bay of Campeche on June 5. With a more organized center, Bill intensified despite some wind shear in existed. As it approached Texas on June 7, Bill reached peak winds of 65 mph. Colder waters offshore began to weaken Bill, however. In the morning hours on June 8, Bill made landfall in Calhoun, Texas, as a tropical storm with winds of 50 mph. Shortly after landfall, Bill weakened to a Tropical Depression. The decaying storm turned northeast and dissipated completely on June 9.