Meteorological history | |
---|---|
Duration | June 25–July 5,2006 |
Overall effects | |
Fatalities | 16 |
Damage | $1 billion (equivalent to $1.45 billion in 2023) [1] [2] |
Areas affected | Delaware,Maryland,New Jersey,New York,Pennsylvania,Virginia,Washington,DC |
The Mid-Atlantic United States flood of 2006 was a significant flood that affected much of the Mid-Atlantic region of the eastern United States. The flooding was very widespread,affecting numerous rivers,lakes and communities from Upstate New York to North Carolina. It was widely considered to be the worst flooding in the region since Hurricane David in 1979. It was also one of the worst floodings in the United States since Hurricane Katrina in August 2005. At least 16 deaths were related to the flooding. [3]
The flooding was attributed to several weather factors that all came together over the region. The primary factor was the stalling of the jet stream just to the west of the Appalachian Mountains. That,combined with the Bermuda High over the Atlantic Ocean,blocked any systems from moving inland or offshore. The influence of a tropical low (which nearly became a tropical storm but did not attain a full surface circulation) off the North Carolina coast allowed a constant stream of tropical moisture to enter the Mid-Atlantic region. The resulting heavy and prolonged rains overflowed the banks of many rivers,lakes,and streams,leading to the flooding. A senior National Weather Service meteorologist declared that rain events of this size take place in the region only every 200 years. [4]
Considerable flooding occurred in much of Delaware,particularly in Sussex County,where Governor Ruth Ann Minner declared a state of emergency. The hardest hit community was Seaford,where 40 families were temporarily homeless and many homes and businesses were damaged. [5]
Significant street and river flooding was reported in Washington,D.C. Several important federal buildings,including the National Archives and Records Administration,the Internal Revenue Service,the United States Department of Justice and some of the Smithsonian Institution,were closed. [6] Mayor Anthony A. Williams declared a state of emergency as a result of the flooding and the threat of power outages and other problems. [7] Sections of Beach Drive in Rock Creek Park were washed out. The road was closed for several months for repair and reinforcing. Beach Drive is the main north–south road through the park and is a major commuter artery.[ citation needed ]
The most severe flooding took place in and around Montgomery County. Over 2,200 people had to be evacuated from the area south of Lake Needwood in Rockville due to concerns of a dam break there (the earthen dam was leaking). If the dam were to break,communities downstream could be under as much as 22 feet (6.7 m) of flood water. [7] The dam did not break,however,and the evacuations ended on the evening of June 29. US 29 (Colesville Road) in Silver Spring and MD 198 near Fort Meade were among the dozens of roadways closed due to high water. Parts of Laurel in Prince George's County were also evacuated after floodgates were opened to relieve pressure on a nearby dam.[ citation needed ]
In Frederick County,three people were killed when they attempted to cross the flood waters from Middle Creek. [8] Also in Frederick County,a 14-year-old boy and a 16-year-old boy drowned while swimming in a swollen creek that feeds into the Monocacy River. On July 4 in Prince George's County,the body of a 22-year-old man was recovered. It was determined that his car was swept off US 29 by the floodwaters nearly two weeks prior. [9] In Harford County,several inches of rain fell for several days. Parts of the Susquehanna River and Deer Creek flooded,and several rescues were performed.[ citation needed ] Damage to roads and agriculture in the Eastern Shore region alone was estimated to be around $12 million (equivalent to $17.5 million in 2023). [1] [5]
On Friday,June 30,Maryland Governor Robert Ehrlich requested federal disaster aid for five Maryland counties:Caroline,Cecil,Dorchester,Harford,and Montgomery. However,Ehrlich stated in a letter requesting the aid to President George W. Bush that more counties could be included after damage assessments. Governor Ehrlich stated that damages in Maryland could exceed $10 million (equivalent to $14.5 million in 2023). [1] [9] Ehrlich also requested,in addition to federal disaster aid,funds for "hazard mitigation assistance",which is federal money used to help governments rebuild antiquated structures with modern structures. Ehrlich also obtained loans from the federal Small Business Administration to help private property owners,both residential and business,to rebuild or repair damaged buildings. [9]
The heaviest flooding in New Jersey was along and near the Delaware River,on the border with Pennsylvania. Over 1,000 people were evacuated from low-lying areas of Trenton,and some state government buildings were closed. In addition,Trenton's water filtration system was shut down because of debris floating down the Delaware,and Mayor Douglas Palmer called for conservation,saying the city had only about two days of drinkable water.[ citation needed ] The river was expected to crest Friday at nearly 8 feet (2.4 m) over flood stage,the fourth-highest level on record for Trenton. [6] Governor Jon Corzine had declared a state of emergency for the entire state as a result of the flooding. [10]
Significant flooding took place in the Southern Tier region,particularly around Binghamton and Waverly/Sayre (on the New York-Pennsylvania border). Riverside communities were severely flooded,and many evacuations took place in the region which stretched along the Susquehanna,Chenango,Delaware and Unadilla rivers. [11] The Susquehanna River in Bainbridge crested at 27 feet (8.2 m),14 feet (4.3 m) over the flood stage. This was the highest the river had ever reached in the Bainbridge area. In Broome County alone,over 5,000 people were forced to evacuate,particularly in the submerged town of Conklin. [3] Two people were killed when a section of I-88 washed away and two trucks drove into the chasm created. [6] The Mohawk River valley also experienced significant flooding,with damage occurring to Lock 10 on the Erie Canal.[ citation needed ] In Port Jervis,the Delaware River flooded low areas of the city that had barely recovered from the record flooding of April 2005. The Neversink River also swelled,prompting officials to close the Neversink bridge. The Mid-Delaware Bridge (carrying US 6/US 209) was also closed.[ citation needed ]
Governor George Pataki estimated that damage in the state could exceed $100 million (equivalent to more than $145 million in 2023). [1] [6] Many of the records levels during this flood would be topped five years later in 2011 when the remnants of Tropical Storm Lee struck the area.[ citation needed ]
The worst flooding in the state took place in the Susquehanna River valley and its tributaries. Over 200,000 residents in northeastern Pennsylvania had to be evacuated due to the rising floodwaters. Damage in Susquehanna County alone totaled over $100 million (equivalent to more than $145 million in 2023). [1] [12] Extensive river flooding was reported in dozens of communities in eastern Pennsylvania. Over 70 people had to be rescued from rooftops by U.S. Coast Guard helicopters after being stranded by the floodwaters. [3] At the Wilkes-Barre flood protection levee,the river was at 41 feet (12 m),which was about the record level reached in Hurricane Agnes and at which point catastrophic flooding takes place. Forecasts predicted that the river would crest at above 39 feet (12 m),exceeding any other event other than Agnes and leading to significant flooding in other communities with less protection. [13] Luzerne County officials said the large evacuations were precautionary,as there was a potential for the area to be isolated if the most severe predictions took hold. In Reading,the Schuylkill River's flood stage is 13 feet (4.0 m),and the river was projected to crest at about 23 feet (7.0 m),resulting in the worst flooding in the area since Hurricane Agnes. In Easton,the Delaware River crested at 17 feet (5.2 m) above flood stage. At Riegelsville,the river was at 14 feet (4.3 m) above flood level,and at New Hope it crested at 8 feet (2.4 m) above flood level.
In Harrisburg,a festival's start in the city was pushed back and cut down,due to the potential for the flood,and the Harrisburg Senators were forced to play two "home games" in Bowie,Maryland,due to flooding in Commerce Bank Park. Philadelphia's Kelly Drive and West River Drive were closed. The Knoebels amusement park in Elysburg was closed due to the flooding of local creeks and did not reopen until Friday afternoon. [14] The Manayunk neighborhood in Philadelphia issued a mandatory evacuation for the area between Main Street and Ridge and Levering. [15] Severe flooding of Swatara Creek near Hershey and Hummelstown closed many roads in the area and damaged a number of homes. The creek crested at 16.12 feet (4.91 m) around 7 am on June 29,breaking the previous official record of 15.37 feet (4.68 m),which was set September 27,1975. However,this did not come close to the flooding after Hurricane Agnes,which caused the creek to crest at approximately 28 feet (8.5 m) on June 23,1972. Hummelstown was flooded briefly (3–4 days),mainly across Duke and Water streets,as well as the railroad tracks. In Pike County,the Delaware River caused extensive damage to Matamoras Borough and Westfall Township. The Delaware crested in the early hours of June 29 at 32.16 feet (9.80 m) at Milford (as per NOAA hydrograph [16] ) The record level of the river at Milford is 35.5 feet (10.8 m),and flood stage is 25 feet (7.6 m). On Friday,June 30,US 209 between Milford and the Monroe County line at Lehman Township was closed. In Wayne County,the opening of the Lake Wallenpaupack spillway caused damage downstream. [17] The Delaware River also caused damage on the eastern border of the county. Damage in Wayne County totaled about $50 million (equivalent to $72.7 million in 2023). [1] [18] In Lackawaxen,the Zane Grey museum,part of the Upper Delaware Scenic and Recreational River,sustained significant damage. [19]
Of the 67 counties in Pennsylvania,46 were under a state of emergency as declared by Governor Ed Rendell. Four deaths were confirmed in Pennsylvania;two in Luzerne County,one near Gettysburg,and one in rural Wayne County. [20]
Flooding occurred in many areas in Virginia,particularly in the north. A mudslide closed the Capital Beltway (I-495) in Alexandria for several hours on Monday,June 26. Mudslides were also witnessed in the mountainous regions. [21] Governor Tim Kaine declared a state of emergency for the entire Commonwealth of Virginia.
Hurricane Floyd was a very powerful Cape Verde hurricane which struck the Bahamas and the East Coast of the United States. It was the sixth named storm,fourth hurricane,and third major hurricane in the 1999 Atlantic hurricane season. Floyd triggered the fourth largest evacuation in US history when 2.6 million coastal residents of five states were ordered from their homes as it approached. The hurricane formed off the coast of Africa and lasted from September 7 to 19,becoming extratropical after September 17,and peaked in strength as a very strong Category 4 hurricane. It was among the largest Atlantic hurricanes of its strength ever recorded,in terms of gale-force diameter.
Hurricane Agnes was the costliest hurricane to hit the United States at the time,causing an estimated $2.1 billion in damage. The hurricane's death toll was 128. The effects of Agnes were widespread,from the Caribbean to Canada,with much of the east coast of the United States affected. Damage was heaviest in Pennsylvania,where Agnes was the state's wettest tropical cyclone. Due to the significant effects,the name Agnes was retired in the spring of 1973.
Hurricane Diane was the first Atlantic hurricane to cause more than an estimated $1 billion in damage,including direct costs and the loss of business and personal revenue. It formed on August 7 from a tropical wave between the Lesser Antilles and Cape Verde. Diane initially moved west-northwestward with little change in its intensity,but began to strengthen rapidly after turning to the north-northeast. On August 12,the hurricane reached peak sustained winds of 105 mph (165 km/h),making it a Category 2 hurricane. Gradually weakening after veering back west,Diane made landfall near Wilmington,North Carolina,as a strong tropical storm on August 17,just five days after Hurricane Connie struck near the same area. Diane weakened further after moving inland,at which point the United States Weather Bureau noted a decreased threat of further destruction. The storm turned to the northeast,and warm waters from the Atlantic Ocean helped produce record rainfall across the northeastern United States. On August 19,Diane emerged into the Atlantic Ocean southeast of New York City,becoming extratropical two days later and completely dissipating by August 23.
Tropical Storm Alberto produced extensive and destructive flooding over portions of Alabama,Georgia,and Florida in July 1994. The first named storm of the annual hurricane season,Alberto developed from a tropical wave over the northwestern Caribbean Sea on June 30. Initially a tropical depression,the system moved westward,before curving northwestward on July 1 and entering the Gulf of Mexico. Early on the following day,the depression intensified into Tropical Storm Alberto. Alberto strengthened steadily over the Gulf of Mexico,and by midday on July 3,it peaked as a strong tropical storm with maximum sustained winds of 65 mph (100 km/h). A few hours later,the cyclone made landfall near Destin,Florida,at the same intensity. The system quickly weakened to a tropical depression early on July 4. Thereafter,a high pressure system caused Alberto to drift over west-central Georgia and central Alabama,until the storm dissipated over Alabama on July 7.
Tropical Storm Henri was a moderate tropical storm that formed in the 2003 Atlantic hurricane season. The eighth storm of the season,Henri was one of six tropical cyclones to hit the United States in the year. Henri formed from a tropical wave in the Gulf of Mexico in early September,and crossed over Florida as a tropical depression. Its remnants later moved into the Mid-Atlantic before dissipating completely.
Hurricane Ernesto was the costliest tropical cyclone of the 2006 Atlantic hurricane season. The sixth tropical storm and first hurricane of the season,Ernesto developed from a tropical wave on August 24 in the eastern Caribbean Sea. Ernesto first affected the northern Caribbean,reaching minimal hurricane status near Haiti before weakening and moving across eastern Cuba as a tropical storm. Despite initial predictions for it to track through the eastern Gulf of Mexico as a major hurricane,Ernesto moved across eastern Florida as a weak tropical storm. After turning to the northeast,it re-intensified and made landfall on August 31 on the North Carolina coast just below hurricane status. Late the next day,Ernesto became extratropical after entering southern Virginia. The remnants spread moisture across the northeastern United States before dissipating over eastern Canada on September 4.
The effects of Hurricane Isabel in Delaware resulted in one of only thirteen presidential disaster declarations for the state of Delaware. Hurricane Isabel formed from a tropical wave on September 6,2003,in the tropical Atlantic Ocean. It moved northwestward,and within an environment of light wind shear and warm waters,it steadily strengthened to reach peak winds of 165 mph (266 km/h) on September 11. After fluctuating in intensity for four days,Isabel gradually weakened and made landfall on the Outer Banks of North Carolina with winds of 105 mph (169 km/h) on September 18. It quickly weakened over land and became extratropical over Pennsylvania the next day. The storm's center remained to the south and west of Delaware,and was about 175 miles (282 km) from the state at its closest approach. At that time,Isabel was a strong tropical storm located in central Virginia.
The effects of Hurricane Isabel in Virginia proved to be the costliest disaster in the history of Virginia. Hurricane Isabel formed from a tropical wave on September 6,2003,in the tropical Atlantic Ocean. It moved northwestward,and within an environment of light wind shear and warm waters it steadily strengthened to reach peak winds of 265 km/h (165 mph) on September 11. After fluctuating in intensity for four days,Isabel gradually weakened and made landfall on the Outer Banks of North Carolina with winds of 165 km/h (103 mph) on September 18. It quickly weakened over land as it passed through central Virginia,and Isabel became extratropical over western Pennsylvania on September 19.
Floods in the United States (2000–present) is a list of flood events which were of significant impact to the country during the 21st century,since 2000. Floods are generally caused by excessive rainfall,excessive snowmelt,storm surge from hurricanes,and dam failure.
The 2007 Midwest flooding was a major flooding event that occurred in the Midwestern United States in the third week of August 2007. While Hurricane Dean was affecting the Yucatán Peninsula and the Gulf of Mexico,and Tropical Storm Erin was affecting Oklahoma and Texas,a persistent storm system hung over the Midwest for several days,causing repeated flash flooding in the US states of Illinois,Indiana,Iowa,Minnesota,Ohio,and Wisconsin. Cool Canadian air clashed with large quantities of warm moist air from the Gulf,producing torrential rains along a stationary front. 5 deaths across the central United States were attributed to the resulting flooding. Seven Minnesota counties,eight Ohio counties,fourteen counties in Wisconsin,and seven counties in Illinois were declared Federal Disaster Areas.
The June 2008 Midwestern United States floods were flooding events which affected portions of the Midwestern United States. After months of heavy precipitation,a number of rivers overflowed their banks for several weeks at a time and broke through levees at numerous locations. Flooding continued into July. States affected by the flooding included Illinois,Indiana,Iowa,Michigan,Minnesota,Missouri and Wisconsin. The American Red Cross assisted the victims of flooding and tornadoes across seven states and the National Guard was mobilized to assist in disaster relief and evacuation.
The effects of Hurricane Jeanne in the Mid-Atlantic region of the United States included two fatalities and $530 million in damage. Originating from a tropical wave off the coast of Africa in early September 2004,Hurricane Jeanne tracked through the Leeward Islands and Hispaniola for several days,resulting in extensive damage and an immense loss of life. After completing a clockwise loop between September 22 and 24,the storm intensified into a major hurricane before striking the Bahamas and Florida. Substantially weaker,the system turned northeastward over Georgia before affecting Delaware,District of Columbia,Maryland,New Jersey,New York,Pennsylvania,Virginia,and West Virginia;all of those states are in the Mid-Atlantic region of the United States. By the evening of September 26,the Hydrometeorological Prediction Center took over responsibility of monitoring the former hurricane over Virginia.
Tropical Storm Lee was the thirteenth named storm and fifteenth system overall of the 2011 Atlantic hurricane season,developing from a broad tropical disturbance over the Gulf on September 2. It was designated as Tropical Storm Lee the next day. Prior to 2020,when Marco formed on August 22,Lee was tied with 2005's Maria as the earliest-forming 13th Atlantic tropical storm. The system was rather large,and due to drifting,Lee brought flash flooding to the Gulf Coast. Flooding associated with the rains caused significant property damage in the areas,with drowning deaths reported in both Mississippi and Georgia. Elsewhere,the storm helped spread wildfires that destroyed homes and killed two people in Texas,and a traffic accident in Alabama resulted in one death. Rough surf offshore drowned one person in each of these states. After becoming extratropical,Lee caused historic flooding in Pennsylvania,New York,and Canada,mainly Quebec and Ontario.
Hurricane Irene was a large and destructive tropical cyclone which affected much of the Caribbean and East Coast of the United States during late August 2011. The ninth named storm,first hurricane,and first major hurricane of the 2011 Atlantic hurricane season,Irene originated from a well-defined Atlantic tropical wave that began showing signs of organization east of the Lesser Antilles. Due to development of atmospheric convection and a closed center of circulation,the system was designated as Tropical Storm Irene on August 20,2011. After intensifying,Irene made landfall in St. Croix as a strong tropical storm later that day. Early on August 21,the storm made a second landfall in Puerto Rico. While crossing the island,Irene strengthened into a Category 1 hurricane. The storm paralleled offshore of Hispaniola,continuing to slowly intensify in the process. Shortly before making four landfalls in the Bahamas,Irene peaked as a 120 mph (190 km/h) Category 3 hurricane.
Hurricane Sandy was an extremely large and destructive Category 3 Atlantic hurricane which ravaged the Caribbean and the coastal Mid-Atlantic region of the United States in late October 2012. It was the largest Atlantic hurricane on record as measured by diameter,with tropical-storm-force winds spanning 1,150 miles (1,850 km). The storm inflicted nearly $70 billion USD in damage,and killed 233 people in eight countries,from the Caribbean to Canada. The eighteenth named storm,tenth hurricane,and second major hurricane of the 2012 Atlantic hurricane season,Sandy was a Category 3 storm at its peak intensity when it made landfall in Cuba,though most of the damage it caused was after it became a Category 1-equivalent extratropical cyclone off the coast of the Northeastern United States.
Tropical Depression Six caused significant flooding along the Gulf Coast of the United States,especially in the Florida Panhandle. The sixth tropical cyclone of the 1975 Atlantic hurricane season,the depression developed from a trough of low pressure in the northeastern Gulf of Mexico on July 28. The system strengthened slightly,but peaked with maximum sustained winds of 35 mph (56 km/h) –below tropical storm intensity. Early on July 29,the depression made landfall in eastern Louisiana. Once inland,the depression slowly weakened and re-curved northeastward on July 30 into Mississippi,shortly before degenerating into a remnant low pressure area. The remnants moved through northern Louisiana and Arkansas until dissipating on August 3.
The effects of Hurricane Sandy in Maryland and Washington,D.C., included tropical storm force sustained winds with isolated gusts to hurricane force,plus significant mountain snow and coastal flooding.
The 1985 Election Day floods —also known as the Killer Floods of 1985 in West Virginia —produced the costliest floods in both West Virginia and Virginia in November 1985. The event occurred after Hurricane Juan,a tropical cyclone in the 1985 Atlantic hurricane season,meandered near the coast of Louisiana before striking just west of Pensacola,Florida late on October 31. Juan moved northward into Canada,but spawned another system that spread moderate rainfall across the Mid-Atlantic States,wetting soils. On November 3,a low pressure area developed south of Florida and moved northeastward along a cold front,bringing a plume of moisture influenced by Juan's previous track. The storm moved through the southeastern United States,stalling on November 5 west of Washington,D.C. before turning out to sea the next day. The event was known as the Election Day floods due to its concurrence with elections in Virginia.
The effects of Hurricane Floyd in Pennsylvania were concentrated in southeastern portions of the state,and included over a dozen deaths. Hurricane Floyd made landfall in North Carolina and,in a weakened state,impacted the Mid-Atlantic States with torrential rainfall. Over 10 in (250 mm) of rain in the state caused extensive and damaging flash flooding that affected over 10,000 homes. Many people became stranded due to the flood waters,and thousands had to be evacuated. Relatively strong winds resulted in widespread downed trees,some of which landed on houses and vehicles. Total preliminary damage from the storm was $60 million,and it is estimated that 13 people died due to the storm. Following the floods,multiple counties were declared major disaster areas.
Hurricane Floyd in 1999 was the costliest natural disaster in New Jersey's history,until it was surpassed by Hurricane Irene in 2011. Damage in the state totaled $250 million (1999 USD),much of it in Somerset and Bergen counties. Seven people died in New Jersey during Floyd's passage –six due to drowning,and one in a traffic accident. A police lieutenant took his life after coordinating floodwater rescues for nearly 48 hours.
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