Category Archives: Flood

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Beware of Fire Ants During Hurricane Cleanup

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While Texas, Florida and other states dry out from the trillions of gallons of water dumped by Hurricanes Harvey and Irene, there is much to be done and many hazards to watch out for when clearing trees and removing soggy remains from homes and offices.

While cleaning up outdoors, people should keep in mind that many animals are also displaced. These include 20 species of snakes (in Texas), alligators, deer and raccoons, according to the Washington Post.

What they may not be on the lookout for, however, are floating rafts of fire ants, which have a painful, itchy sting, Smithsonian reported. The ants, which send some 25,000 people to the hospital each year, can be found in a number of states, including Texas, Florida, Alabama, Mississippi, and California. They have a way of coping with large amounts of water by clinging to each other and forming floating rafts that can contain 500,000 or more fire ants.
Photo: ScienceNews

These rafts are actually floating colonies protecting the queen, which is in the middle. They can survive for weeks until they find a dry surface—any dry surface.

According to Popular Science:

Normal ants bite and then spray acid on the new wound, but fire ants are much worse. They bite, hold on, and inject a venom containing 46 different proteins, including poisons that sometimes affect the nervous system. They also have a more brutal attack pattern than many social insects. If you knock over a beehive, not all the bees will come after you—most colonies have a few dedicated warriors to protect the clan. When fire ants are disturbed, however, they all attack. About one in every hundred people will have a full-body response to the stings, such as an allergic reaction or even hallucinations.

As Eric Chaney at the Weather Channel warns, the ants can remain a problem even after the floodwaters recede and it is easy to accidently happen upon them, hunkered down amidst debris piles. According to the Imported Fire Ant Research and Management Project, “Laundry piles are convenient places that present lots of tunnels for the ants. They may be attracted to moisture or food residue or oils on soiled clothing. Often, reports of ants in laundry occur following a flood.”

Those venturing into flood waters are advised to wear rubber boots, cuffed gloves and protective rain gear to keep ants off their skin. Popular Science recommends spraying ant rafts with their kryptonite—soapy water—which can cause them to sink.

Harvey Losses Could Reach $90 Billion

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With weeks to go before floodwaters recede in some parts of Texas, Hurricane Harvey—which delivered more than three feet of rain in areas of Houston—has so far caused at least 38 deaths and numerous injuries. Harvey was downgraded to a storm Wednesday night, but tens of thousands of people are still in shelters, some of which are also flooded, fearful of what they will find when they return to their homes.

“Hurricane Harvey has already broken all U.S. records for tropical cyclone-driven extreme rainfall, with observed cumulative amounts of 51 inches,” Michael Young, RMS head of Americas climate risk modeling said in a statement.

Joel N. Myers, founder, president and chairman of AccuWeather declared Hurricane Harvey to be, “The costliest and worst natural disaster in American history. AccuWeather has raised its estimate of the impact to the nation’s gross national product to $190 billion or a full one percent, which exceeds totals of economic impact of Katrina and Sandy combined.”

Damage assessments are climbing, with modeling and analytics firm RMS now estimating that losses incurred by wind, storm surge and inland flooding could be as high as $70 billion-$90 billion. The majority of losses are coming from inland flooding in the Houston metropolitan area, where more than seven million properties top $1.5 trillion in value. RMS said the estimate includes damage to all residential, commercial, industrial and automotive risks in the area, as well as possible inflation from an area-wide demand surge.

According to RMS:

Most losses will be uninsured, given that private flood insurance is limited. However, although the insured losses will remain uncertain for some time they will be significant, as private coverage is not consistent: there are significant variations in how coverage is provided by individual insurers.

Coverage for some of the residential losses has been provided by the National Flood Insurance Program (NFIP). There are approximately 500,000 NFIP policies that will be affected by Harvey, and the losses to the program will be very significant – potentially the largest event to date. However, NFIP penetration rates are as low as 20% in the Houston area, and thus most of the losses will be uninsured. This will rekindle the public policy debate around this issue.

Texas Gov. Greg Abbott estimated that more than $125 billion in federal funding will be required to help the state recover from Hurricane Harvey, the Wall Street Journal reported.

Adding to the area’s woes were two explosions at the Arkema Inc. chemical plant in Crosby, Texas, 20 miles northeast of Houston early on Thursday.

The plant, which produces organic peroxides used in products like kitchen counter tops, polystyrene cups and plates, industrial paints and PVC pipes., was without electric service since Sunday and lost refrigeration when backup generators were flooded. Because the products need to be kept cold to prevent a chemical reaction, workers had moved them from warehouses into diesel-powered refrigerated containers, but those were also flooded.

A sheriff’s deputy was taken to a hospital after inhaling fumes, according to Reuters.

Residents in a 1.5-mile radius of the Arkema plant were evacuated on Tuesday, and water levels there make it too dangerous for workers to assess the situation from the ground, officials added.

Arkema urged people to stay away as the fire burns out. Black smoke was billowing from the site, Harris County Sheriff Ed Gonzalez said at a televised news briefing.

The Federal Aviation Administration said Wednesday it had temporarily barred flights from the area because of the risk of fire or explosion.

Hurricane Harvey Hits Texas with Up to $30 Billion in Damages

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Hurricane Harvey, which made landfall in Texas on Friday night as a Category 4 hurricane, has so far caused at least five deaths and more than a dozen injuries. Now a tropical storm, Harvey has dumped more than 30 inches of rain on the Houston area, with another 15 to 20 inches anticipated by Friday.

According to the New York Times:

  • With record floodwaters devastating much of southeast Texas, more than 450,000 people are likely to seek federal aid in recovering from Harvey, the storm that has battered the Gulf Coast for days, Brock Long, the director of the Federal Emergency Management Agency, said on Monday. The agency has estimated that about 30,000 people will seek emergency shelter, and that federal aid will be needed for years.
  • The Houston region now looks like an inland sea dotted by islands, with floodwaters inundating roads, vehicles, and even bridges and buildings. Thousands of people have been rescued from flooded homes and cars and many more are stuck in homes that remained above water but are cut off.

Bloomberg reports that damage from Harvey is expected to reach as much as $30 billion when factoring in the impact of flooding on the region’s labor force, power grid, transportation and other aspects supporting the energy sector.

Catastrophe modeling firm AIR Worldwide estimates that industry insured losses resulting from Hurricane Harvey’s winds and storm surge in Texas will range from $1.2 billion to $2.3 billion. AIR noted that these estimates do not include the impact of the ongoing torrential rain and catastrophic flooding from the hurricane unprecedented precipitation.

Hurricane Katrina, which struck New Orleans in 2005, caused about $160 billion in total economic damages, with about 47% covered by the insurance industry.

The Wall Street Journal said that despite the high damage anticipated, the timing is good for insurers and their customers:

Personal and commercial insurers have record levels of capital, the money they have on hand that isn’t required to back obligations. With insurers’ overall strong capital position, Harvey is unlikely to cause extensive damage to the industry’s financial strength, although it could hurt quarterly earnings for those carriers with blocks of business in hard-hit areas.

According to the Wall Street Journal, analysts estimate it would take $100 billion or more of losses in a 12-month period to cause distress within the insurance industry. The Insurance Information Institute reported that insurers had $709 billion in surplus during the first quarter of this year, which translates to $1 in surplus for every 75 cents of net premiums.

Although 52% of residential and commercial properties in the Houston metro are at “High” or “Moderate” risk of flooding, they are not in Special Flood Hazard Areas (SFHA) identified by the Federal Emergency Management Agency (FEMA), according to CoreLogic. Properties within SFHA zones, categorized as Extreme or Very High Risk, require flood insurance if the property has a federally insured mortgage. Properties outside SFHA zones are not required to carry flood insurance.

Levels of flood risk for properties in seven metro areas likely to have severe rain and flooding as a result of Hurricane Harvey:

A factor in insurance costs, according to AIR Worldwide, is that more than half of the commercial buildings in both Texas and Louisiana are steel and concrete. Unlike residential structures, commercial buildings are often built to stricter standards, making them less vulnerable than single-family homes. More than 40% of buildings in the U.S. Gulf Coast region meet Flood Insurance Rate Map (FIRM) standards set in 1980, AIR said.

Lloyd’s Finds Extreme Weather Can Be Accurately Modeled Independently

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In a new report based on research from UK national weather service the Met Office, Lloyd’s has found that extreme weather events may be modeled independently. While extreme weather can be related to events within a region, these perils are not significant correlated with perils in other regions of the world.

The study’s key findings include:

  • Met Office research found that the majority of perils are not significantly correlated, but identified nine noteworthy peril-to-peril teleconnections, most of which are negatively correlated
  • Lloyds’ modeling finds that these correlations were not substantial enough to warrant changes to the amount of capital it holds to cover extreme weather claims
  • Even when there is some correlation between weather patterns, it does not necessarily follow that there will be large insurance losses. Extreme weather events may still occur simultaneously even if there is no link between them
  • An assumption of independence for capital-holding purposes is therefore appropriate for the key risks the Lloyd’s market currently insures
  • The methodology released in the report enables scenario modeling across global portfolios for appropriate region-perils

“This important finding supports the broader argument that the global reinsurance industry’s practice of pooling risks in multiple regions is capital efficient and that modeling appropriate region perils as independent is reasonable,” the report concluded.

According to Trevor Maynard, head of exposure management and reinsurance at Lloyd’s, “This challenges the increasingly held view among some regulators around the world that capital for local risks should be held in their own jurisdictions. Lloyd’s believes this approach reduces the capital efficiency of the (re)insurance market by ignoring the diversification benefits provided by writing different risks in different locations and, in so doing, needlessly increases costs, to the ultimate detriment of policyholders. Insisting on the fragmentation of capital is not in the best interests of policyholders.”

Check out the map below for further insight from the Met Office about large-scale weather perils that do demonstrate statistically significant correlation:

lloyd's extreme weather perils