Hurricane Jeanne was a Category 3 hurricane that struck the Caribbean and the Eastern United States in September 2004. It was the deadliest hurricane in the Atlantic basin since Mitch in 1998, and the deadliest tropical cyclone worldwide in 2004. It was the tenth named storm, the seventh hurricane, and the fifth major hurricane of the season, as well as the third hurricane and fourth named storm of the season to make landfall in Florida. After wreaking havoc on Hispaniola, Jeanne struggled to reorganize, eventually strengthening and performing a complete loop over the open Atlantic. It headed westwards, strengthening into a Category 3 hurricane and passing over the islands of Great Abaco and Grand Bahama in the Bahamas on September 25. Jeanne made landfall later in the day in Florida just two miles from where Hurricane Frances had struck a mere three weeks earlier.
Hurricane Earl was an atypical, disorganized, and short-lived Category 2 hurricane that caused moderate damage throughout the Southeast United States. It formed out of a poorly organized tropical disturbance over the southwest Gulf of Mexico late on August 31, 1998. Tracking towards the northeast, the storm quickly intensified into a hurricane on September 2 and made landfall early the next day near Panama City, Florida. Rapidly tracking towards Atlantic Canada, the extratropical remnants of Earl significantly intensified before passing over Newfoundland on September 6. The remnants were absorbed by former Hurricane Danielle two days later.
The 2006 Westchester County tornado was the strongest and largest tornado in Westchester County, New York since the 1904 Chappaqua tornado. It touched down there on Wednesday, July 12, 2006, and traveled 13 miles (21 km) into southwestern Connecticut during a 33-minute span through two states. The tornado touched down at 3:30 p.m. EDT (19:30 UTC) on the shore of the Hudson River before becoming a waterspout and traveling 3 mi (5 km) across the river. Coming ashore, the tornado entered Westchester County and struck the town of Sleepy Hollow at F1 intensity. After passing through the town, it intensified into an F2 tornado and grew to almost a one-quarter mile (400 m) in diameter. The tornado continued through the county, damaging numerous structures, until it crossed into Connecticut at 4:01 p.m. EDT (20:01 UTC). Not long after entering the state, it dissipated in the town of Greenwich at 4:03 p.m. EDT (20:03 UTC). When the tornado entered Westchester County, it was the eighth known tornado to either touch down or enter the county since 1950.
The November 2008 Carolinas tornado outbreak was a brief but deadly tornado outbreak which began shortly after midnight, while many people were sleeping. Most of the eight tornadoes that touched down were produced by two supercell thunderstorms over North Carolina. At 12:25 a.m. EST, the National Weather Service issued a tornado watch for most of eastern North Carolina as the risk of tornadoes increased. Not long after, the first tornado of the outbreak, an EF2, touched down in South Carolina. Almost an hour later, the second tornado touched down in Robeson County, North Carolina. Three other minor tornadoes, two EF0 and an EF1, touched down over the next two hours. Around 3:10 a.m. EST, the first of two killer tornadoes touched down near Kenly, North Carolina. The EF2 tornado destroyed a few homes and damaged several others. Roughly 20 minutes later, an EF3 tornado touched down in Wilson County. This tornado killed one person and injured a few others after destroying several homes. Total damages from the outbreak amounted to $2.5 million, about half of which was a result of the EF3 tornado.
The March 2009 tornado outbreak sequence was a series of tornado outbreaks which affected large portions of the Central, Southern, and Eastern United States from March 23 to March 29. A total of 56 tornadoes touched down during the event, two of which were rated as EF3.
The effects of Hurricane Georges in Florida lasted for more than a week in late September and early October in 1998. After developing from a tropical wave to the south of Cape Verde on September 15, Georges moved steadily west-northwestward and peaked as a strong Category 4 hurricane on the Saffir–Simpson scale on September 20. After weakening slightly to a Category 3, the cyclone proceeded to strike Antigua, Saint Kitts and Nevis, Puerto Rico, Dominican Republic, and Cuba. Georges emerged into the Straits of Florida as a Category 1, but re-strengthened slightly to a Category 2 before making landfall in Key West, Florida, on September 25. The hurricane continued northwestward into the Gulf of Mexico and struck near Biloxi, Mississippi, on September 28. After moving inland, Georges turned eastward and crossing into the Florida Panhandle on the next day. By October 1, the system dissipated near the northeast Florida–southeast Georgia coast.
The May 2009 derecho series was an unusually strong sequence of derecho events and tornadoes beginning on May 2, 2009, and continuing through May 8, which primarily affected the Southern United States. At least seven people were killed by the storms. An associated tornado outbreak also resulted in nearly 100 tornadoes, some strong, with most strong tornadoes, most damage, and all of the deaths on May 8. In total, nine people were killed, dozens were injured and at least $70 million in damage occurred, $58 million on May 8.
The May 2009 Southern Midwest Derecho was an extreme progressive derecho and mesoscale convective vortex (MCV) event that struck southeastern Kansas, southern Missouri, and southwestern Illinois on May 8, 2009. Thirty-nine tornadoes, including two of EF3 strength on the Enhanced Fujita Scale, were reported in addition to high non-tornadic winds associated with the derecho and MCV. Due to the abnormal shape of the storm on radar and the extremely strong winds, many called this an "inland hurricane." A new class of storm, the Super Derecho, has been used to describe this event after analysis in 2010. Embedded supercells produced hail up to baseball size in southern Missouri, a rare event in a derecho. A wind gust of 106 mph (171 km/h) was recorded by a backup anemometer at the Southern Illinois Airport after official National Weather Service equipment failed. This derecho was the last of a series of derechos that occurred at the beginning of May.
On June 18, 2001, a small, but fatal tornado outbreak occurred across the Upper Midwest as well as Florida. The outbreak spawned a long-tracked F3 tornado that killed three people, and caused approximately US$10 million in damage. The tornado struck Siren, Wisconsin, a small village whose only siren was malfunctioning when the tornado moved through. Other less damaging tornadoes were confirmed in Florida, Iowa, Minnesota and Nebraska. Following the outbreak, areas affected by the Wisconsin tornado received financial assistance from local and federal authorities.
One of several tornado outbreaks in the United States to take place during the record month of April 2011, 49 tornadoes were produced across the Midwest and Southeast from April 9–11. Widespread damage took place; however, no fatalities resulted from the event due to timely warnings. In Wisconsin, 16 tornadoes touched down, ranking this outbreak as the state's largest April event on record as well as one of the largest single-day events during the course of any year. The strongest tornado of the outbreak was an EF4 tornado that touched down west of Pocahontas, Iowa on April 9, a short-lived satellite to a long-track EF3 tornado. Between 0256 and 0258 UTC that day, five tornadoes were on the ground simultaneously in Pocahontas County, Iowa, all of which were from one supercell thunderstorm. Other tornadoes impacted parts of eastern Kentucky and Tennessee on April 9, hours before the event in Iowa.
The tornado outbreak of June 16–18, 2014, was a tornado outbreak concentrated in the Great Plains and the Midwestern United States. Two tornadoes also occurred in Ontario. The severe weather event most significantly affected the state of Nebraska, where twin EF4 tornadoes killed two and critically injured twenty others in and around the town of Pilger on the evening of June 16. The two Pilger tornadoes were part of a violent tornado family that produced four EF4 tornadoes and was broadcast live on television. The outbreak went on to produce multiple other strong tornadoes across the northern Great Plains states throughout the next two days.
A deadly and destructive outbreak sequence of 23 tornadoes struck parts of the Great Plains and the Great Lakes in late-June 1957. At least seven significant tornadoes (F2+) touched down during the outbreak sequence. The most devastating storm was a large, violent, and catastrophic 500-yard-wide F5 tornado family that struck Fargo, North Dakota on Thursday, June 20, 1957, killing 10 people and becoming the deadliest tornado ever recorded in North Dakota. The outbreak caused 11 fatalities, 105 injuries, and $25.883 million in damage.
