timeline documents tropical cyclone formations, strengthening, weakening, landfalls, extratropical transitions, and dissipations during the season. It includes information that was not released throughout the season, meaning that data from post-storm reviews by the National Hurricane Center, such as a storm that was not initially warned upon, has been included. By convention, meteorologists use one time zone when issuing forecasts and making observations: Coordinated Universal Time (UTC), and also use the 24-hour clock (where 00:00 = midnight UTC). The National Hurricane Center uses both UTC and the time zone where the center of the tropical cyclone is currently located. The time zones utilized (east to west) prior to 2020 were: Atlantic, Eastern, and Central. In this timeline, all information is listed by UTC first with the respective regional time included in parentheses. Additionally, figures for maximum sustained winds and position estimates are rounded to the nearest 5 units (knots, miles, or kilometers), following the convention used in the National Hurricane Center's products. Direct wind observations are rounded to the nearest whole number. Atmospheric pressures are listed to the nearest millibar and nearest hundredth of an inch of mercury. Timeline May May 25 12:00 UTC (7:00 a.m. CDT) at A subtropical depression develops from an area of low pressure off the east coast of the Yucatán Peninsula in Mexico, about 80 miles (130 km) east-northeast of Chetumal, Quintana Roo. May 26 18:00 UTC (1:00 a.m. CDT) at The subtropical depression intensifies into Subtropical Storm Alberto roughly 60 miles (95 km) north-northwest of the western tip of Cuba. May 28 00:00 UTC (7:00 p.m. CDT May 27) at Subtropical Storm Alberto transitions to a tropical storm and concurrently attains maximum sustained winds of 65 mph (100 km/h) approximately 115 mi (185 km) south-southwest of Apalachicola, Florida. 06:00 UTC (1:00 a.m. CDT) at Tropical Storm Alberto attains its minimum atmospheric pressure of 990 mbar (hPa; 29.24 inHg) about 100 miles (155 km) southwest of Apalachicola, Florida. 21:00 UTC (4:00 p.m. CDT) at Tropical Storm Alberto makes landfall near the Bay County–Walton County, Florida line, with winds of 45 mph (75 km/h). May 29 00:00 UTC (7:00 p.m. CDT May 28) at Tropical Storm Alberto weakens to a tropical depression roughly 45 miles (75 km) southwest of Dothan, Alabama. May 31 06:00 UTC (1:00 a.m. CDT) at Tropical Depression Alberto degenerates to a non-convective remnant area of low pressure approximately 30 miles (45 km) west