Hurricane Dora
Around 12:20 a.m. EST on September 10, Hurricane Dora made landfall about north of St. Augustine, Florida, with sustained winds between 115 and 125 mph (185 and 205 km/h). Although estimated to have been a Category 3 at landfall, the highest winds onshore were believed to have been in the Category 2 range. Striking northeastern Florida, Dora became the first tropical cyclone on record to make landfall in the region. Once onshore the storm gradually weakened, losing hurricane status about 24 hours later, and began a gradual turn towards the northeast. During the morning of September 12, Dora became almost stationary over the southern border between Alabama and Georgia. However, the storm rapidly accelerated and re-emerged into the Atlantic Ocean on September 14 near the Outer Banks of North Carolina. Hours after moving over water, the system transitioned into an extratropical cyclone. The remnants of Dora were last mentioned on September 16 off the northeast coast of Newfoundland.
Tropical Storm Doria
In New Jersey, Doria produced wind gusts of up to 54 mph (87 km/h) and storm tides 5.3 feet (1.6 m) above normal in Atlantic City. The outer bands of the storm spawned an F2 tornado near Cape May. It moved quickly northward through Cape May County, and caused about $250,000 in damage (1971 USD, $  USD) in damage along its 29-mile (47 km) path. The storm dropped heavy rainfall, peaking at 10.29 inches (261 mm) in Little Falls. Record 24-hour rainfall totals occurred in Newark with 7.84 inches (199 mm) and Trenton with 7.55 inches (192 mm). The rainfall led to record flooding on several small streams in the state. The Beden Brook crested at over 5 feet (1.5 m) above normal, which destroyed a bridge near Princeton. The Raritan River at Manville crested at 9.8 feet (3 m), a record that stood until the passage of Hurricane Floyd in 1999. The heavy rainfall overtopped the levee system in Zarephath, causing severe damage to the Alma White College and preventing it from opening in the fall of 1971. The rainfall also flooded two fire houses in Somerville with several feet of water, and the water treatment plant in Bridgewater Township with 18 inches (457 mm) of floodwaters in what was catalogued as a 50-year flood event. Following the flooding to the water treatment plant, officials raised the beams of the plant to withstand a 500-year flood event. Eleven houses experienced flooding damage in Montgomery Township. Doria killed three people and caused $138 million in damage (1971 USD) in the state.