How Do Hurricanes Affect Forest Resources? Lessons from Katrina and Rita

Total Page:16

File Type:pdf, Size:1020Kb

How Do Hurricanes Affect Forest Resources? Lessons from Katrina and Rita C perspectivesO and toolsMPAS to benefit southern forest resources from the southern research stationS issue 12 How do hurricanes affect forest resources? Lessons from Katrina and Rita Evaluating Chaos...page 3 In the Danger Zone...page 8 Red-Cockaded Woodpeckers and Hurricanes. p a g e 1 1 inside... the science Lessons from Hurricanes are a fact of life in the Southern United 1 States. The Gulf Coast areas of Texas, Louisiana, and Katrina and Mississippi are especially prone to these tropical cyclones, Rita but coastal ecosystems are uniquely adapted to both by John Stanturf periodic hurricanes and fire. You could say they thrive on disturbance. Evaluating On August 28, 2005, Dennis Jacobs had just arrived at 3 a church dinner in Knoxville, TN, when he heard that Chaos Hurricane Katrina had intensified into a category 5 storm. by Bill Dockery He knew how he would be spending the next few days. Gulf Coast When Hurricanes Katrina and Rita swept through Gulf 5 Coast forests, the SRS Forest Inventory and Analysis Forests Hit Program provided the damage assessments Federal, State, Hard and local authorities needed to estimate the economic toll by Claire Payne on communities with significant forest resources. In The Danger Natural resource managers and landowners were 8 overwhelmed by the damage from Hurricanes Katrina and Zone Rita. Many of them didn’t have plans in place to help them by Zoë Hoyle get started on sometimes massive salvage operations, let alone come up with strategies to make their forests more resilient when future storms strike. 11 Red-cockaded Hurricanes have the potential to severely impact red- Woodpeckers cockaded woodpecker populations by damaging habitat. Artificial cavity inserts developed after Hurricane Hugo and Hurricanes make it easier for a unique species to weather major by Zoë Hoyle storms. compass—october 2008 How Much Forest Hurricane Katrina alone may have caused a loss of 40 21 million metric tons of forest carbon. That’s 20 percent Carbon is Lost of annual forest carbon sequestration capacity. SRS after a Major scientist Steve McNulty has developed new forest carbon Hurricane? sequestration equations that take into account major by Stephanie Worley Firley disturbances such as hurricanes. Winners and SRS researchers Jeffrey Prestemon and Thomas Holmes 23 have developed an economic model that describes the effects Losers, Depression of catastrophes such as hurricanes on the region’s forest and Rebound resources and the market environment in which timber by Bill Dockery producers and consumers operate. Last Trees Hundreds of thousands of urban trees were killed or 26 badly damaged by Katrina’s winds and storm surge. Standing Municipalities needed a way to assess how much money it by Zoë Hoyle would take to remove thousands of downed trees, but they also needed to know how to save those left standing. departments Experimental Forests ................... 18 Around the Station ...................... 31 Research Work Units ................... 46 Science You Can Use! .................... 29 New Products ................................... 33 briefs Hurricane Katrina ...........................2 Hurricane Rita ................................. 12 What Gulfport Lost......................24 The Value of Taking Inventory ....6 Shelter From the Storm ............. 14 Strike While the Quick Guide to Salvage .............. 10 How Fish Fare .................................... 17 Harm is Hot ........................................ 28 A Simple Solution, But Not That Why Longleaf? .................................. 20 Easy ........................................................... 11 Cover photo: When Hurricanes Katrina and Rita swept through in fall 2005, they left widespread damage to Gulf Coast forest resources. (Photo by Patrick Hesp, Louisiana State University Hurricane Katrina and Rita Clearinghouse Cooperative) Email: [email protected], [email protected] Persons with disabilities who require alternative means for Telephone: 828-257-4388 communication of program information (Braille, large print, C OMPASS Editors: Zoë Hoyle, Science Writer, and Claire Payne, audiotape, etc.) should contact USDA’s TARGET Center at Technical Information Specialist (202) 720-2600 (voice and TDD). Art Director: Rodney Kindlund Science You Can Use! Contributing SDG Staff Writers: Carol Whitlock and Stevin To file a complaint of discrimination, write to USDA, Westcott Director, Office of Civil Rights, 1400 Independence Avenue, Station Director: Jim Reaves SW, Washington, D.C. 20250-9410, or call (800) 795- October 2008 — Issue 12 3272 (voice) or (202) 720-6382 (TDD). USDA is an equal The mission of the Southern Research Station is to create opportunity provider and employer. perspectives and tools to benefit southern forest resources the science and technology needed to sustain and enhance southern forest ecosystems and the benefits The use of trade or firm names in this publication is for COMPASS is published by the Science Delivery Group they provide. reader information and does not imply endorsement (SDG) of the Southern Research Station (SRS), Forest by the U.S. Department of Agriculture of any product or Service, U.S. Department of Agriculture. As part of the The U.S. Department of Agriculture (USDA) prohibits service. Nation’s largest forestry research organization—Forest discrimination in all its programs and activities on the basis Service Research and Development—SRS serves 13 of race, color, national origin, age, disability, and where The opinions and recommendations offered by guest Southern States and beyond. The Station’s 130 scientists applicable, sex, marital status, familial status, parental authors and interviewees are not necessarily those of the work at more than 20 units located across the region status, religion, sexual orientation, genetic information, U.S. Department of Agriculture, the Forest Service, or the at Federal laboratories, universities, and experimental political beliefs, reprisal, or because all or part of an Southern Research Station. forests. individual’s income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) ISSN: 1931-4906 Future issues can be obtained by returning the postcard included in this issue. Printed on recycled paper Printed with soy ink www.srs.fs.usda.gov An American chestnut tree in West Salem, WI, planted outside the chestnut’s natural range in the early 1900s by settlers. Under the tree are, from left: TACF president and CEO Marshal Case, Dr. Cameron Gundersen, and Bruce Gabel. (Photo courtesy of Daphne Van Schaick) With increased hurricane activity expected for the next 10 to 40 years, yearly damage to forests along the Gulf Coast could become the norm. (Photo by Peter L. Lorio, U.S. Forest Service, Bugwood.org) compass—october 2008 Lessons From Katrina and Rita by John Stanturf urricanes are a fact of life in The estimated wind damage from 2005 hurricanes, or to offer analysis of Hthe Southern United States. The Katrina and Rita to forest resources social systems. Our focus on hurricane Gulf Coast areas of Texas, Louisiana, was between $2 and $3 billion, effects on forest resources may seem and Mississippi are especially prone with more than 5.5 million acres of at first somewhat narrow, but we to these tropical cyclones, but coastal timberland affected in the States of believe that the importance of forests ecosystems are uniquely adapted to Texas, Louisiana, Mississippi, and lies not only in timber values, but both periodic hurricanes and fire. You Alabama. Although financial estimates also in the innumerable “ecosystem could say they thrive on disturbance. of timber losses provide an incomplete services” forests provide—from habitat Unfortunately, cities and towns along estimate of impacts, there is no doubt for myriad species, to places for the Gulf Coast—and the people that effects from the hurricanes people to rest and recreate, to carbon who live in them—have proven to will linger for years to come. Many storage banks to offset climate change, be less resilient when it comes to managers and landowners were to alternative sources of energy. weathering huge storms, as most caught unprepared to salvage timber In this issue, we’ll go into detail recently shown when Hurricane Ike quickly enough to recover value and about the steps landowners and tore through Galveston, TX. The past prevent further damage from insects, homeowners can take to manage 10 hurricane seasons have been the invasive plants, and rot. Managing storm damage to their trees. We’ll look most active on record. The consensus salvage while maintaining or at how Katrina affected a long-term among climatologists is that increased recovering ecological values is another experiment on an experimental forest hurricane activity could persist for issue few land managers had planned in Mississippi, including findings that another 10 to 40 years. When you for. longleaf pine—once the dominant add global climate change predictions Hurricanes Katrina and Rita tree species in coastal areas—is to the mix, yearly damage from provided an opportunity to examine surprisingly hurricane-resistant when hurricanes could become the norm forest management objectives and compared to other pine species. We’ll for the Gulf Coast rather than periodic how they could be used to reduce see how what we’ve learned from occurrences. vulnerability to damage from future previous hurricanes came into play In August and September 2005, storms and to provide managers with when Rita threatened
Recommended publications
  • Monitoring Hurricane Rita Inland Storm Surge
    Monitoring Hurricane Rita Inland Storm Surge 27 ARKANSAS 96 49 165 MISSISSIPPI LOUISIANA LC2b LA3 TEXAS LC3 (8.0) 10 LC4 LOUISIANA LC2a (10.8) LA2 Lafayette ALABAMA Lake Charles 90 Beaumont Orange (8.9) (4.5) TEXAS B1 10 B19b LA8 LA7 LC6b 14 167 LC5 (5.3) (4.2) Study Area B20 Abbeville B19a LC6a LF3 (5.0) (6.9) 27 B10 Port 27 (9.5) Arthur LC7 LC8b Grand LF5 B12 Sabine Calcasieu Lake Lake (11.2) Lake (10.1) LC12 LC9 (7.4) Gulf of Mexico (7.5) LC8a B15b LC11 (13.8)LC10 LA12 LA11 LA9b Sabine LC13 82 (13.3) LA9 82 White Lake (10.7) Pass (9.4) (10.6) (14.9) (14.8) (14.7) LA10 (6.6) (8.7) Vermilion Gulf of Mexico - Barometric-pressure sensors Lake - Water-level sensors 0 5 10 20 Miles - Co-located barometric and water-level sensor A B 0 5 10 20 Kilometers (9.4) C Hurricane Rita storm track obtained from the NOAA National Hurricane Center - Maximum surge elevation (feet above NAVD88) Map showing path of Hurricane Rita and study area. Map showing locations of storm-surge sensors in southwestern Louisiana and southeastern Texas. Water-level and barometric-pressure sensor. A Mobile Network of Storm-Surge Sensors Recovering the Sensors As Hurricane Rita approached the Texas and Louisiana coasts (A), Hurricane Rita made landfall early on the U.S. Geological Survey deployed an experimental water-level and the morning of September 24, 2005. Of barometric-pressure gage network to record the magnitude, extent, the 34 water-level sensors, significant and timing of inland hurricane storm surge and coastal flooding.
    [Show full text]
  • Federal Disaster Assistance After Hurricanes Katrina, Rita, Wilma, Gustav, and Ike
    Federal Disaster Assistance After Hurricanes Katrina, Rita, Wilma, Gustav, and Ike Updated February 26, 2019 Congressional Research Service https://crsreports.congress.gov R43139 Federal Disaster Assistance After Hurricanes Katrina, Rita, Wilma, Gustav, and Ike Summary This report provides information on federal financial assistance provided to the Gulf States after major disasters were declared in Alabama, Florida, Louisiana, Mississippi, and Texas in response to the widespread destruction that resulted from Hurricanes Katrina, Rita, and Wilma in 2005 and Hurricanes Gustav and Ike in 2008. Though the storms happened over a decade ago, Congress has remained interested in the types and amounts of federal assistance that were provided to the Gulf Coast for several reasons. This includes how the money has been spent, what resources have been provided to the region, and whether the money has reached the intended people and entities. The financial information is also useful for congressional oversight of the federal programs provided in response to the storms. It gives Congress a general idea of the federal assets that are needed and can be brought to bear when catastrophic disasters take place in the United States. Finally, the financial information from the storms can help frame the congressional debate concerning federal assistance for current and future disasters. The financial information for the 2005 and 2008 Gulf Coast storms is provided in two sections of this report: 1. Table 1 of Section I summarizes disaster assistance supplemental appropriations enacted into public law primarily for the needs associated with the five hurricanes, with the information categorized by federal department and agency; and 2.
    [Show full text]
  • ANNUAL SUMMARY Atlantic Hurricane Season of 2005
    MARCH 2008 ANNUAL SUMMARY 1109 ANNUAL SUMMARY Atlantic Hurricane Season of 2005 JOHN L. BEVEN II, LIXION A. AVILA,ERIC S. BLAKE,DANIEL P. BROWN,JAMES L. FRANKLIN, RICHARD D. KNABB,RICHARD J. PASCH,JAMIE R. RHOME, AND STACY R. STEWART Tropical Prediction Center, NOAA/NWS/National Hurricane Center, Miami, Florida (Manuscript received 2 November 2006, in final form 30 April 2007) ABSTRACT The 2005 Atlantic hurricane season was the most active of record. Twenty-eight storms occurred, includ- ing 27 tropical storms and one subtropical storm. Fifteen of the storms became hurricanes, and seven of these became major hurricanes. Additionally, there were two tropical depressions and one subtropical depression. Numerous records for single-season activity were set, including most storms, most hurricanes, and highest accumulated cyclone energy index. Five hurricanes and two tropical storms made landfall in the United States, including four major hurricanes. Eight other cyclones made landfall elsewhere in the basin, and five systems that did not make landfall nonetheless impacted land areas. The 2005 storms directly caused nearly 1700 deaths. This includes approximately 1500 in the United States from Hurricane Katrina— the deadliest U.S. hurricane since 1928. The storms also caused well over $100 billion in damages in the United States alone, making 2005 the costliest hurricane season of record. 1. Introduction intervals for all tropical and subtropical cyclones with intensities of 34 kt or greater; Bell et al. 2000), the 2005 By almost all standards of measure, the 2005 Atlantic season had a record value of about 256% of the long- hurricane season was the most active of record.
    [Show full text]
  • Hurricane Rita Rapid Response Wind Water Line Report – Louisiana Task Order 447 February 28, 2006 (Final) Hazard Mitigation Technical Assistance Program Contract No
    Hurricane Rita Rapid Response Wind Water Line Report – Louisiana Task Order 447 February 28, 2006 (Final) Hazard Mitigation Technical Assistance Program Contract No. EMW-2000-CO-0247 Task Order 447 Hurricane Rita Rapid Response Wind Water Line (WWL) Data Collection – Louisiana FEMA-1607-DR-LA Final Report February 28, 2006 Submitted to: Federal Emergency Management Agency Region VI Denton, TX Prepared by: URS Group, Inc. 200 Orchard Ridge Drive Suite 101 Gaithersburg, MD 20878 HMTAP Task Order 447 February 28, 2006 Table of Contents Abbreviations and Acronyms ---------------------------------------------------------------------------------------------ii Glossary of Terms----------------------------------------------------------------------------------------------------------iii Background ------------------------------------------------------------------------------------------------------------------ 1 Overview of Impacts in Louisiana--------------------------------------------------------------------------------------- 2 Purpose ----------------------------------------------------------------------------------------------------------------------- 5 Methodology ----------------------------------------------------------------------------------------------------------------- 8 Findings and Observations----------------------------------------------------------------------------------------------19 Conclusions -----------------------------------------------------------------------------------------------------------------23 Appendices Appendix
    [Show full text]
  • Hurricane Rita Vs. Laura National Weather Center Meteorologist on the Catastrophic Impact Laura Had on Beci’S Service Territory
    Date: September 15, 2020 Contact: Danielle Tilley, Communications Specialist Phone: (337) 463-6221 office (337) 463-2809 fax Hurricane Rita vs. Laura National Weather Center Meteorologist on the Catastrophic Impact Laura Had on BECi’s Service Territory DeRidder — By Cheré Coen - As Hurricane Laura approached the Louisiana coast on Aug. 26, emergency officials urged evacuations because of a possible massive storm surge that could flood Lake Charles and surrounding areas. Because of the threat of flooding at the National Weather Service office, Warning Coordination Meteorologist Roger Erickson headed to an emergency operations center located near the Lake Charles Civic Center. Erickson and others who rode out the storm there in the early hours of Aug. 27 wore masks and social distanced themselves in various offices because of COVID-19, Erickson explained. Erickson landed in a small office on the second floor. “After midnight, I heard creaking sounds behind me like someone was in a rocking chair,” he said. “At first it was once every 10 seconds, then every five seconds, then every second. My boss arrived and he heard it too. We figured that the exterior wall and windows were breathing in and out, trying to blow out.” Not long after, the building’s water ceased, creating unsanitary conditions and causing the air conditioner to fail. “Now, I’m in a room getting hot, walls and windows are creaking,” he related. “There’s no water. Three minutes later, I’m feeling nauseated. I noticed everything on the table was shaking. I thought I was in an earthquake. The whole room was shaking.” What Erickson felt was the result of a Category 4 hurricane blasting into the area with 150 mile-per-hour winds, the strongest hurricane to hit Louisiana since the 1850s.
    [Show full text]
  • Hurricane Irma At-A-Glance
    2018 FEDERAL POLICY BRIEF EMERGENCY MANAGEMENT: HELP FLORIDA RECOVER AND REBUILD HURRICANE IRMA AT-A-GLANCE The following is an excerpt taken from FAC’s 2017 Hurricane Summit Program which was held in November of 2017 to review and assess the impacts of Hurricane Irma and identify a path to recovery for Florida’s counties. For more information on the data depicted in the following infographs please contact: Eric Poole at [email protected],Casey Perkins at [email protected] or Robert Brown at [email protected] Florida Association of Counties ∙ 100 South Monroe Street ∙ Tallahassee, Florida 32301 ∙ www.fl-counties.com Hurricane Evacuation: Lessons Learned and What You Need to Know (continued) Hurricane Irma was the most powerful Atlantic Ocean hurricane in recorded history. By multiple accounts, the storm was also directly responsible for the largest mass exodus in U.S. history, with nearly 7 million people across Florida, Georgia, and South Carolina being asked to evacuate their homes. According to Florida’s Department of Emergency Management (DEM), nearly 6.8 million Floridians evacuated their homes in the lead up to Hurricane Irma, “beating 2005’s Houston-area Hurricane Rita exit by millions.” Media outlets described police going door to door “telling people to leave to avoid life-threatening rains, winds, and flooding,” as well as “large traffic jams on Interstates 95 and 75 and the Florida Turnpike.” Additionally, the Federal Aviation Administration reported that Miami’s traffic controllers handled 11,500 flights on the Thursday before the storm compared to 8,800 one week prior.
    [Show full text]
  • Hurricane Rita September 20–24, 2005 Situation Paper
    Hurricane Rita September 20–24, 2005 Situation Paper ABOVE: Hurricane Rita on Sept. 21, 2005 Prepared by Crawford & Company www.crawfordandcompany.com September 28, 2005 Information in this briefing is drawn from a variety of sources. Every effort has been made to give the appropriate credit or attribution. The information contained herein is accurate to the best of our knowledge at the time. Critical business decisions should not rely solely upon this information, but rather, should be made only after facts can be verified independently of our report. Rita’s position in the 2005 Atlantic hurricane season The 17th named tropical storm of the season; the ninth hurricane; the fifth major hurricane; the second category 5 hurricane. Source: AccuWeather.com Pre-landfall intensity Rita was the strongest measured hurricane to enter the Gulf of Mexico and the third most intense hurricane ever recorded in the Atlantic Basin. On September 21 at 11:00 p.m. EDT (300 GMT), the National Hurricane Center reported Rita’s sustained winds at 175 mph (280 km/h) with an estimated minimum pressure of 897 millibars. Landfall facts When: September 24, 2005, at 03:38 EDT (07:38 GMT) Where: Sabine Pass, Texas, and Johnson’s Bayou, Louisiana. Strength: Category 3 hurricane with windspeeds of 120 mph (190 km/h) and a storm surge of 10 feet (3 m). (On Tuesday, September 20, Hurricane Rita moved through the Florida Straits as a category two storm, causing little damage to south Florida or the Florida Keys.) Deaths As of 11:00 pm EDT on September 26 (0300 GMT September 27), six deaths have been directly attributed to Rita.
    [Show full text]
  • Hurricane Katrina Storm Surge Modeling and Validation
    Experimental Storm Surge Simulations for Hurricane Katrina Hassan Mashriqui, Ph.D., P.E. Paul Kemp, Ph.D. Ivor van Heerden, Ph.D. Young Yang, William Scullin, Rob Cunningham, Emily Hyfield, DeWitt Braud Hurricane Center, Louisiana State University Baton Rouge, Louisiana 60th Interdepartmental Hurricane Conference Mobile, Alabama, 22 March 2006. ADCIRC Modeling Team (Collaborators) School of the Coast & Environment ADCIRC – 2D Hydrodynamic Model Input & Output - Hurricane Wind Velocities – input - Atmospheric Pressure – input - Location of the “eye” – input ------------------------------------------------------- • Surge or Sea Surface Elevation – output • Speed or Velocity (Currents) – output West Atlantic/Gulf Coast Domain Forecasting (ADCIRC) • Track, Central Pressure, Maximum Sustained Winds from NHC Advisory • Interpolation based on Unisys Inc. Data (0.5 hr) • Run Planetary Boundary Layer Wind Model (1.5 hr) • Initiate ADCIRC with Storm Near Jamaica • Simulate 8 days on 240 processors in SuperMike (2.5 hr) • Post-Processing (0.5 to 1.0 hr) • Develop Maximum Storm Surge Graphic with SMS and Animation • Submit Products to OEP and Post on www.hurricane.lsu.edu/floodprediction (0.5 to 1.0 hr) • Total time elapsed 5 to 8 hr SuperMike – 1024 CPUs 2005 - Storms Simulated at LSU * Hurricane Wilma * Hurricane Rita * Hurricane Katrina * Hurricane Emily * Hurricane Dennis * Tropical Storm Cindy * Tropical Storm Arlene Hurricane Katrina 29 August 2005 NEW ORLEANS, ONE OF OUR “BOWL” CITIES. NOTE THE RIVER’S ELEVATION IN RELATION TO THE BOWL LIDAR Courtesy DeWitt Braud, CSI, LSU Katrina Forecasts (CTD) • NHC Web Advisory à LSU Web • Advisory 16, Saturday 0400 à 14:31 (10.5 hr) • Advisory 17, Saturday 1000 à 15:06 (5.1 hr) • Advisory 18, Saturday 1600 à 22:07 (6.1 hr) • Advisory 22, Sunday 0700 à 14:57 (7.9 hr) • Advisory 25, Sunday 2200 à 4:28 (6.5 hr) • Advisory 31, Tuesday 1000 Hindcast Adv.
    [Show full text]
  • Evacuee Perception of Geophysical Hazards for Hurricane Irma
    JANUARY 2019 S E N K B E I L E T A L . 217 Evacuee Perception of Geophysical Hazards for Hurricane Irma JASON SENKBEIL Department of Geography, University of Alabama, Tuscaloosa, Alabama JENNIFER COLLINS School of Geosciences, University of South Florida, Tampa, Florida JACOB REED Department of Geography, University of Alabama, Tuscaloosa, Alabama (Manuscript received 27 February 2018, in final form 15 November 2018) ABSTRACT Hurricane Irma was one of the strongest Atlantic hurricanes in history before landfall and caused a large evacuation. A total of 155 evacuees at interstate rest areas were asked to rank their concern about damage at their residence for six different geophysical hurricane hazards. Additionally, they were asked about their perceived maximum wind speeds (PMWS) and the wind speeds at which they thought damage would occur (DW) at their residence. These wind speeds were then compared to the actual peak wind gusts (APG) nearest to each resident’s location. Results show a significantly greater concern for wind and storm size, compared to other hazards (tornadoes, rainfall/flooding, storm surge, falling trees). The mean PMWS of evacuees was greater than the mean APG, suggesting widespread misperception of wind speeds. Furthermore, the mean APG was less than the mean DW, and the mean PMWS was also higher than the DW. Additional tests found no significant differences in wind perception between residents with previous storm experiences and no ex- perience, and no significant differences between those who resided in mandatory evacuation zip codes and those who did not. These results suggest that wind speed risk is poorly understood, even though it is a high concern for evacuees from hurricanes.
    [Show full text]
  • Geology and Hurricane- Protection Strategies in the Greater New Orleans Area
    Geology and Hurricane- Protection Strategies in the Greater New Orleans Area PUBLIC INFORMATION SERIES NO. 11 SUMMER 2006 Louisiana Geological Survey 3079 Energy, Coast & Environment Building Baton Rouge, Louisiana 70803 Tel: 225 578 5320 Fax: 225 578 3662 Richard P. McCulloh, Paul V. Heinrich, and Bill Good www.lgs.lsu.edu Geology and Hurricane-Protection Strategies in the Greater New Orleans Area State of Louisiana Kathleen B. Blanco, Governor Louisiana State University, Baton Rouge Sean O’Keefe, Chancellor Louisiana Geological Survey Chacko J. John, Director and State Geologist Front cover: Canal Street, New Orleans, Louisiana, September 005 by Rocky Beach. This public information document is part of a series published periodically by the Louisiana Geological Survey, whose offices are located at Louisiana State University, Room 3079 Energy, Coast & Environment Building, Baton Rouge, LA 70803-40. This information is distrib- uted free of charge. The publisher does not guarantee the accuracy or correctness of any information. Contact the LGS business office at (5) 578-530 for extra copies or for more information, or visit the web site at http://www.lgs.lsu.edu. This public document was published at a total cost of $3589.6. One thousand copies of this document were published in this printing at a cost of $493.00. This document was published by the Louisiana Geological Survey, 3079 Energy, Coast and Environment, Louisiana State University, Baton Rouge, Louisiana, 70803, to aid in public understanding of the geology of Louisiana under the authority of R.S. 30:06. This material was printed in accordance with standards for printing by state agencies established pursuant to R.S.
    [Show full text]
  • Tropical Cyclone Intensity
    Hurricane Life Cycle and Hazards John Cangialosi and Robbie Berg National Hurricane Center National Hurricane Conference 26 March 2012 Image courtesy of NASA/Goddard Space Flight Center Scientific Visualization Studio What is a Tropical Cyclone? • A relatively large and long‐lasting low pressure system – Can be dozens to hundreds of miles wide, and last for days • No fronts attached • Forms over tropical or subtropical oceans • Produces organized thunderstorm activity • Has a closed surface wind circulation around a well‐defined center • Classified by maximum sustained surface wind speed – Tropical depression: < 39 mph – Tropical storm: 39‐73 mph – Hurricane: 74 mph or greater • Major hurricane: 111 mph or greater Is This a Tropical Cyclone? Closed surface circulation? Organized thunderstorm activity? Tropical Depression #5 (later Ernesto) Advisory #1 issued based on aircraft data The Extremes: Tropical vs. Extratropical Cyclones Hurricane Katrina (2005) Superstorm Blizzard of March 1993 Tropical Cyclones Occur Over Tropical and Subtropical Waters Across the Globe Tropical cyclones tracks between 1985 and 2005 Atlantic Basin Tropical Cyclones Since 1851 Annual Climatology of Atlantic Hurricanes Climatological Areas of Origin and Tracks June: On average about 1 storm every other year. Most June storms form in the northwest Caribbean Sea or Gulf of Mexico. July: On average about 1 storm every year . Areas of possible development spreads east and covers the western Atlantic, Caribbean, and Gulf of Mexico. Climatological Areas of Origin and Tracks August: Activity usually increases in August. On average about 2‐3 storms form in August. The Cape Verde season begins. September: The climatological peak of the season. Storms can form nearly anywhere in the basin.
    [Show full text]
  • Impacts of Hurricane Rita on the Beaches of Western Louisiana
    Impacts of Hurricane Rita on the Beaches of Western Louisiana By Hilary F. Stockdon, Laura A. Fauver, Asbury H. Sallenger, Jr., and C. Wayne Wright Hurricane Rita made landfall as a category 3 storm in western Louisiana in late September 2005, 1 month following Hurricane Katrina’s devastating landfall in the eastern part of the State. Large waves and storm surge inundated the low- elevation coastline, destroying many communities and causing extensive coastal change including beach, dune, and marsh erosion. northwest, taking aim at western Louisiana and its already Introduction hurricane-weary residents. In the early morning hours of September Just 3 weeks after 24, 2005, Rita made landfall Hurricane Katrina made as a category 3 storm in landfall on the Mississippi southwestern Louisiana River Delta in Louisiana, near the Texas border Tropical Storm Rita (fig. 1). had formed and was Successive headed toward the landfalls of Katrina Gulf of Mexico. and Rita in the On September 22, northern Gulf of 2005, over the warm Mexico region waters of the Loop devastated many Current in the Gulf of the barrier of Mexico, Rita islands, mainland reached its maximum beaches, and coastal intensity as a category communities in 5 hurricane. With Louisiana. Across 155-kn (knots, or nautical the impacted region, miles per hour) winds and a wide variety of a minimum pressure of 897 coastal responses to the millibars—the fourth-lowest hurricanes were observed. central pressure on record for an In some areas, such as the Atlantic hurricane (Knabb and Chandeleur Islands during others, 2006)—Rita turned Katrina, the barrier islands were toward the north- completely stripped of sand, and marsh areas were eroded (see Sallenger and others, this volume).
    [Show full text]