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Effects of Hurricane Isabel in Delaware

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Hurricane Isabel
Hurricane Isabel shortly after landfall
Tropical storm
1-minute sustained (SSHWS/NWS)
Highest winds45 mph (75 km/h)
Lowest pressure988 mbar (hPa); 29.18 inHg
Overall effects
FatalitiesNone
Damage$40 million (2003 USD)
Areas affectedDelaware
Part of the 2003 Atlantic hurricane season
Part of a series on Hurricane Isabel
Effects

Other wikis

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.[1]

The effects of the hurricane were compounded by flooding caused by the remnants of Tropical Storm Henri days before. Moderate winds of up to 62 mph (100 km/h) downed numerous trees, tree limbs, and power lines across the state, leaving at least 15,300 without power. Numerous low-lying areas were flooded due to high surf, strong storm surge, or run-off from flooding further inland. The passage of Hurricane Isabel resulted in $40 million in damage (2003 USD, ($66.3 million 2024 USD)) and no casualties in the state. Hurricane Isabel was the ninth named storm of the 2003 Atlantic hurricane season on September 6, 2003.[2]

Preparations

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Track of Hurricane Isabel

On September 16, 44 hours before Hurricane Isabel made landfall on the Outer Banks of North Carolina, the National Hurricane Center issued a tropical storm watch for the entire coastline of Delaware. The National Hurricane Center also briefly issued a hurricane watch for the coastline. On September 17, 26 hours before Isabel made landfall, the watches were changed to tropical storm warnings.[1] While over the western Atlantic Ocean as a Category 5 hurricane, forecasters predicted Isabel would move northwestward and within five days be at a position 155 miles (249 km) south-southeast of Lewes as a 115 mph (185 km/h) major hurricane.[3] Though located within the cone of uncertainty, all subsequent forecasts predicted a landfall on North Carolina with the hurricane passing to the west of the state.[4]

Governor Ruth Ann Minner declared a state of emergency prior to the arrival of the hurricane. The declaration also included for the activation of the Delaware National Guard to assist in hurricane related duties.[5] Minner mandated residents in 13 low-lying areas of Sussex County to evacuate.[6] In all, 787 people evacuated across the state to seven emergency shelters set up by the American Red Cross.[7] Officials began recommending visitors to leave potentially affected areas by three days before Isabel made landfall. Governor Minner mandated all schools to be closed on the day of the hurricane's landfall, and recommended all residents in mobile homes to evacuate and for businesses to close. The University of Delaware preemptively canceled classes. The Cape May-Lewes Ferry closed for several days in anticipation of the storm.[6] The Delaware Department of Transportation planned to place restrictions on state roads in the event strong wind gusts were recorded.[8]

Impact

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Rainfall totals from Hurricane Isabel

Strong swells from the hurricane produced a moderate storm surge which peaked at 8.66 feet (2.64 m) in Reedy Point.[1] Tides were only slightly above normal, though high surf on top of the storm surge resulted in beach erosion,[9] particularly in Sussex County.[10] Waves of 17 feet (5.2 m) in height were reported near the coastline.[8] The high waters breached dunes south of Bethany Beach, and several locations along Delaware Route 1 were flooded.[9] The large circulation of Isabel produced gusty winds across the state, including a maximum of 70 mph (110 km/h) in Delaware Pilot Tower in the Delaware Bay. Onshore, gusts peaked at 62 mph (100 km/h) in Lewes,[10] where sustained winds of 53 mph (85 km/h) were also reported.[1] Precipitation was heavy but sporadic, amounting to a maximum of 1.88 inches (48 mm) in Greenwood.[9] Heavy rainfall further inland resulted in moderate to severe river flooding. The Christina River at Cooch's Bridge crested at 2.38 feet (0.73 m) above flood stage, and the Red Clay Creek at Wooddale crested at roughly 4 inches (100 mm) above flood stage. Runoff from streams were slowed due to the approaching storm surge from the hurricane.[9]

At the Delaware Breakwater East End Lighthouse in Lewes, strong waves destroyed the lower deck of the lighthouse, while powerful winds blew out the watchroom window. A group of eight volunteers quickly repaired the damage.[11] Moderate wind gusts knocked down numerous trees, tree limbs, and power lines, causing widespread power outages in the state. Conectiv Energy reported the power outage associated with the hurricane as one of the worst in its history.[9] At least 15,300 were left without power during the worst of the hurricane,[8] including 2,500 in the capital city of Dover.[12] Due to the power outages, only one traffic light north of the city of Wilmington was operational.[13] The strong winds also resulted in the Delaware River and Bay Authority to reduce the speed limit on the Delaware Memorial Bridge to 40 mph (64 km/h).[8] 62 roads throughout the state were initially closed due to flooding, downed trees, or downed power lines.[13] Eight roads remained closed for several days, primarily due to flooding.[6] Flooding affected the cities of Seaford, Blades, Bayview, and Augustine Beach, with residents in the latter two being forced to evacuate due to severe flooding conditions. Several state parks reported downed trees and damage.[13] Damage in the state totaled $40 million (2003 USD, $44 million 2006 USD), and there were no deaths in the state as a result of the storm.[1]

Aftermath

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On September 20, two days after Hurricane Isabel passed the state, Governor Ruth Ann Minner made a formal request for a federal disaster declaration for the state.[6] Later that day, President George W. Bush issued a federal disaster declaration for Delaware, one of twelve disaster declarations for the state. The declaration allowed for the use of federal disaster funds and emergency resources to help families and businesses recover from the effects of Hurricane Isabel.[14] State and federal officials opened a disaster recovery center in Georgetown and Wilmington to assist individuals who suffered losses from Isabel and the remnants of Tropical Storm Henri just days before.[15] 761 people visited the recovery centers before they closed.[16] One week after the disaster declaration, residents began receiving checks for those who applied for aid.[17] By about two months after the passage of Hurricane Isabel, 659 residents applied for assistance, with slightly over $1 million (2003 USD, $1.1 million 2006 USD) being distributed to the victims. 141 loan applications were received, as well. FEMA distributed about $2.5 million ($4.14 million 2024 USD) in Small Business Administration loans, and also received 183 public assistance loans for repair or replacement of public facilities.[16]

A total of 35 power crews, along with outside contractors, worked to restore power. By two days after the storm, 2,000 remained without power in scattered areas.[6] Various locations in the city of Dover were without power for about 30 hours. There, the removal of debris exceeded the capacity of the local landfall, resulting in officials temporarily storing it elsewhere.[12] Over 200 volunteers donated time, food and money to provide hot meals for individuals and families affected by the storm. Support teams provided by county officials transported over 300 tons of ruined accessories from the storm, such as appliances, carpets, and drywall, to local landfills.[18] Qualifying for two NASCAR races at Dover International Speedway were cancelled due to the hurricane, although the races went on as scheduled.[19]

See also

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References

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  1. ^ a b c d e Jack Beven & Hugh Cobb (2003). "Hurricane Isabel Tropical Cyclone Report". National Hurricane Center. Archived from the original on November 14, 2013. Retrieved November 15, 2006.
  2. ^ US Department of Commerce, NOAA. "Isabel Anniversary". www.weather.gov. Retrieved September 6, 2019.
  3. ^ Lawrence (2003). "Hurricane Isabel Discussion Thirty-Two". National Hurricane Center. Retrieved November 15, 2006.
  4. ^ National Hurricane Center (2003). "Hurricane Isabel Advisory Archive". Retrieved December 24, 2006.
  5. ^ Environment News Service (2003). "Fierce Isabel Blows Towards Mid-Atlantic Coast". Retrieved December 31, 2006.
  6. ^ a b c d e Kerin Magill (2003). "Hurricane Isabel Wrapup". Sussex County Online. Archived from the original on February 8, 2012. Retrieved December 24, 2006.
  7. ^ "Evacuees to Red Cross Shelters Continue To Increase Across Delaware" (PDF) (Press release). Delaware Emergency Management Agency. September 18, 2003. Archived from the original (PDF) on December 1, 2008. Retrieved July 23, 2008.
  8. ^ a b c d "Sporadic Power Outages Being Reported Across State" (PDF) (Press release). Delaware Emergency Management Agency. September 13, 2003. Archived from the original (PDF) on January 8, 2009. Retrieved July 23, 2008.
  9. ^ a b c d e National Climatic Data Center (2003). "Event Report for Delaware". Archived from the original on May 20, 2011. Retrieved December 24, 2006.
  10. ^ a b Gorse & Frugis (2003). "Hurricane Isabel Post Tropical Storm Report". Mount Holly, New Jersey National Weather Service. Archived from the original (TXT) on March 19, 2005. Retrieved December 24, 2006.
  11. ^ Bob Trapani Jr. (November 2003). "Hurricane Isabel Damages Harbor of Refuge Light". Lighthouse Digest. Lighthouse Depot. Retrieved December 25, 2006.
  12. ^ a b Janice Green (2003). "City Council Meeting on 9/22/2003". Government of Dover, Delaware. Archived from the original on December 28, 2006. Retrieved December 31, 2006.
  13. ^ a b c "Damage Assessment to Begin Statewide" (PDF) (Press release). Delaware Emergency Management Agency. September 19, 2003. Archived from the original (PDF) on January 8, 2009. Retrieved July 23, 2008.
  14. ^ Federal Emergency Management Agency (2006). "Delaware State Disaster History". Archived from the original on February 5, 2007. Retrieved December 26, 2006.
  15. ^ FEMA (2003). "Disaster Recovery Centers to Open". Archived from the original on October 5, 2006. Retrieved December 26, 2006.
  16. ^ a b FEMA (2003). "Disaster Victims Receive Over $3.5 Million In Assistance So Far". Archived from the original on October 3, 2006. Retrieved December 26, 2006.
  17. ^ FEMA (2003). "Storm Disaster Victims Receiving Checks". Archived from the original on October 5, 2006. Retrieved December 26, 2006.
  18. ^ FEMA (2003). "Community Momentum Builds to Help Storm Victims". Archived from the original on October 3, 2006. Retrieved December 26, 2006.
  19. ^ Northeastern Supply (2003). "Race Update for Jason Keller". Archived from the original on December 9, 2006. Retrieved December 31, 2006.
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