For Immediate Release: AIR Worldwide Estimates Total Property Damage from Hurricane Harvey's Flooding Between USD 65 Billion and USD 75 Billion Industry insured losses from wind, flood, and storm surge combined are expected to exceed USD 10 billion ...
For Immediate Release:
AIR Worldwide Estimates Total Property Damage from Hurricane Harvey's Flooding Between USD 65 Billion and USD 75 Billion
Industry insured losses from wind, flood, and storm surge combined are expected to exceed USD 10 billion
BOSTON, Sept. 6, 2017 - Catastrophe modeling firm AIR Worldwide estimates property losses from the flooding in Texas caused by Hurricane Harvey's record-breaking rainfall will be between USD 65 billion and USD 75 billion. These figures include damage to all properties eligible for coverage regardless of whether they are actually insured and without any application of deductibles or limits. Note that these estimates do not include losses from Harvey's winds or storm surge.
AIR estimates that industry insured losses from wind, flood, and storm surge combined are expected to exceed USD 10 billion with approximately USD 3 billion of the losses resulting from winds and storm surge. Note that these estimates do not include losses to the National Flood Insurance Program (NFIP).
After making landfall as a Category 4 hurricane near Rockport, Texas, on Thursday, August 24, hovering over Texas for the next 5 days, and then travelling through western Louisiana the following week, Harvey was downgraded to a remnant low over the weekend of September 2-3; it then moved into the Ohio Valley and dissipated. According to AIR, it had been almost a decade since the last hurricane landfall in Texas-Hurricane Ike in 2008-and the last Category 4 storm to impact the state was Hurricane Carla in 1961. The last Category 4 hurricane to make landfall anywhere in the U.S. was Charley in 2004, which struck southwestern Florida.
Harvey brought excessive and record-breaking rainfall; 51.88 inches were recorded in Cedar Bayou near Houston, which shattered the previous 48-inch rainfall record from any tropical storm or hurricane in the contiguous United States set by Tropical Storm Amelia in 1978 in Medina, Texas. The National Weather Service in Houston officially recorded 43.38 inches and 32.47 inches were recorded at Houston Hobby Airport, which exceeded the previous 3-day record for any major U.S. city. In Beaumont, 26.03 inches of rain were recorded on Tuesday, August 29, more than doubling its prior daily rainfall record of 12.76 inches set in 1923; the rainfall total there has been reported at 47.35 inches. As of Wednesday, more than five stations across southeastern Texas had surpassed 45 inches of rainfall. Reports indicate that Harvey dropped a total of 27 trillion gallons of rain on Texas and Louisiana in 6 days.
According to AIR, more than half of the 120 river gauging stations in the Houston/Galveston area were in various stages of flooding during the event; several experienced major flood stages and crested with new record-setting flood levels. Buffalo Bayou, which flows through downtown Houston, crested at 63.5 feet-2 feet higher than the previous historical record of 61.2 feet set in 1992. Cypress Creek, which flows through neighborhoods north of downtown Houston, crested about 3 feet higher than the previous record of 94.3 feet set in 1949. Similarly, Neches River at Beaumont crested at 21.5 feet, about 10 feet higher than the previous record set in 2006. Flood levels corresponded to astounding 750-, 200-, and 100-year return periods for river water level stages on Cypress Creek near Westfield, Greens Bayou near Houston, and on West Fork San Jacinto River near Porter, Texas.
Homes in and around Houston are under 3 or 4 feet of water, overtaken by river and bayou flooding, with some residents reporting waterlines at more than 6 feet in their flood-damaged properties. In Wharton, the overflow from Houston has traveled southward and flooded homes. Much of the affected area is still flooded, although waters have receded in some areas.
AIR's property loss estimates for flooding from Harvey capture losses from inland flood both on and off the floodplain based on simulated event scenarios that reflect uncertainty in precipitation observations, river flows, and modeled levee failures. The modeled hazard intensities reflect the maximum estimated river flows and maximum excess runoff intensities during the event from August 25-31, 2017.
Included in the estimates are onshore residential, commercial, and industrial properties and their contents, automobiles, and time element coverage (additional living expenses for residential properties and business interruption for commercial properties; the estimates do not, however, include contingent business interruption losses resulting from the closure of oil refineries in the region).
The range in AIR's loss estimates reflects uncertainty in the payment of additional living expenses resulting from relocation, time spent in secondary housing, lost wages, loss of electricity, and damage to contents. Please note that total economic losses are expected to be higher than industry insurable loss estimates.
About AIR Worldwide
AIR Worldwide (AIR) provides risk modeling solutions that make individuals, businesses, and society more resilient to extreme events. In 1987, AIR Worldwide founded the catastrophe modeling industry and today models the risk from natural catastrophes, terrorism, pandemics, casualty catastrophes, and cyber attacks, globally. Insurance, reinsurance, financial, corporate, and government clients rely on AIR's advanced science, software, and consulting services for catastrophe risk management, insurance-linked securities, site-specific engineering analyses, and agricultural risk management. AIR Worldwide, a Verisk Analytics (Nasdaq:VRSK) business, is headquartered in Boston with additional offices in North America, Europe, and Asia. For more information, please visit www.air-worldwide.com. For the latest news and insights from AIR, follow us on Twitter!
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Source: AIR Worldwide via Globenewswire
Source(s) : AIR Worldwide
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