and flooded the river's valley. Although created primarily for hydroelectricity and flood control, it also serves as a reservoir providing water to the city of Atlanta and is a very popular recreational attraction for all of north Georgia. Much of Gainesville is heavily wooded, with both deciduous and coniferous trees. Climate Much like the rest of northern Georgia, Gainesville has a humid subtropical climate (Köppen climate classification Cfa), with cool to mild winters and hot, humid summers. Severe weather While Gainesville does not sit in Tornado Alley, a region of the United States where severe weather is common, Supercell thunderstorms can sweep through any time between March and November, being primarily concentrated in the spring. Tornado watches are frequent in the spring and summer, with a warning appearing at least biannually, occasionally with more than one per year. Tornado activity in the Gainesville area is above Georgia state average and is 108% greater than the overall U.S. average. Gainesville was the site of a deadly F4 on June 1, 1903, which killed 98 people. Gainesville was the site of the fifth deadliest tornado in U.S. history in 1936, in which Gainesville was devastated and 203 people were killed. In April 1974, an F4 tornado 22.6 miles away from the Gainesville city center killed six people and injured thirty. In December 1973, an F3 tornado 2.1 miles away from the city center injured twenty-one people. Both storms caused between $500,000 and $5,000,000 in property damages. Transportation Major roads Interstate 985 State Route 347 U.S. Route 23 U.S. Route 129 U.S. Route 129 Business State Route 11 State Route 11 Business State Route 13 State Route 53 State Route 53 Connector State Route 60 State Route 60 Connector State Route 284 State Route 365 State Route 369 Pedestrians and cycling Highlands to Island Trail (Under construction) Midtown Greenway Wilshire Trails Mass transit The Gainesville Amtrak station is situated at 116 Industrial Boulevard. Amtrak's Crescent train connects Gainesville with the cities of New York, Philadelphia, Baltimore, Washington, Greensboro, Charlotte, Atlanta, Birmingham and New Orleans. The southbound train arrives on Saturday, Monday, and Wednesday mornings, and the northbound train on Sunday, Tuesday, and Thursday evenings. Gainesville connection was replaced by WeGo in 2021. Airport Lee Gilmer Memorial Airport (GVL), built in 1940, is a city-owned airport with two runways (5,500 ft and 4,001 ft), and supports air taxi operations, itinerant operations, local operations, and