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Part 1-B Cause & Impact of Landfalling Tropical Cyclone
Part 1-b Cause & Impact of Landfalling Tropical Cyclone Rainfall & River Flooding • In addition to high winds & storm surge, all tropical storms can produce torrential rains causing massive flooding & trigger landslides and debris floods • Catastrophic flash flooding may occur as a result of intense rainfall over a relatively short duration. Longer duration storms, say a few days, can be equally devastating. 2 River flooding associated with heavy rainfall from tropical cyclones Flood stages & inundation maps • Rain-triggered flooding is not confined to coastal areas. The reach of a large tropical storm can cause flooding well inland, especially along the estuaries. • Beneficial contributions of tropical cyclones: rainfall for needed water supply in the region; and maintenance of global heat balance 5 Cases of landfalling of catastrophic tropical cyclones • Hurricane Andrew , August 24, 1993- Florida • Hurricane Allison , June 5-9, 2001- Houston and TX and LA coasts • Hurricane Katrina , Aug 29, 2005- New Orleans & LA and TX coasts • Hurricane Mitch , Oct 26- Nov 5, Honduras, Salvador, Nicaragua, and Guatemala • Typhoon Morakot , August 3-10, 2009, Taiwan • Typhoon Ketsana , Sept 23-30, 2009, Manila, Philippine , Vietnam & Cambodia 6 Hurricane Andrew (Aug24,1993) 7 Hurricane Andrew (Aug24,1993) Source: Report on Hurricane Andrew Storm Summary & Impacts on Florida Beaches, by USACE & Florida DNR, May 1993 Pressure zones, wind zones and storm surge contour 9 Surge at landfall & waves height Storm surges Wave Heights 10 Impact of gusts on homes 11 Impacts on beaches of Florida 12 Erosion and accretion of beach profiles 13 Hurricane Allison, June 5-9, 2001 * Hurricane Allison’s swath of rainfall – 25-50 cm or more rainfall in coastal TX & LA for nearly 6 days. -
Observed Hurricane Wind Speed Asymmetries and Relationships to Motion and Environmental Shear
1290 MONTHLY WEATHER REVIEW VOLUME 142 Observed Hurricane Wind Speed Asymmetries and Relationships to Motion and Environmental Shear ERIC W. UHLHORN NOAA/AOML/Hurricane Research Division, Miami, Florida BRADLEY W. KLOTZ Cooperative Institute for Marine and Atmospheric Studies, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, Florida TOMISLAVA VUKICEVIC,PAUL D. REASOR, AND ROBERT F. ROGERS NOAA/AOML/Hurricane Research Division, Miami, Florida (Manuscript received 6 June 2013, in final form 19 November 2013) ABSTRACT Wavenumber-1 wind speed asymmetries in 35 hurricanes are quantified in terms of their amplitude and phase, based on aircraft observations from 128 individual flights between 1998 and 2011. The impacts of motion and 850–200-mb environmental vertical shear are examined separately to estimate the resulting asymmetric structures at the sea surface and standard 700-mb reconnaissance flight level. The surface asymmetry amplitude is on average around 50% smaller than found at flight level, and while the asymmetry amplitude grows in proportion to storm translation speed at the flight level, no significant growth at the surface is observed, contrary to conventional assumption. However, a significant upwind storm-motion- relative phase rotation is found at the surface as translation speed increases, while the flight-level phase remains fairly constant. After removing the estimated impact of storm motion on the asymmetry, a significant residual shear direction-relative asymmetry is found, particularly at the surface, and, on average, is located downshear to the left of shear. Furthermore, the shear-relative phase has a significant downwind rotation as shear magnitude increases, such that the maximum rotates from the downshear to left-of-shear azimuthal location. -
Wind Speed-Damage Correlation in Hurricane Katrina
JP 1.36 WIND SPEED-DAMAGE CORRELATION IN HURRICANE KATRINA Timothy P. Marshall* Haag Engineering Co. Dallas, Texas 1. INTRODUCTION According to Knabb et al. (2006), Hurricane Katrina Mehta et al. (1983) and Kareem (1984) utilized the was the costliest hurricane disaster in the United States to concept of wind speed-damage correlation after date. The hurricane caused widespread devastation from Hurricanes Frederic and Alicia, respectively. In essence, Florida to Louisiana to Mississippi making a total of three each building acts like an anemometer that records the landfalls before dissipating over the Ohio River Valley. wind speed. A range of failure wind speeds can be The storm damaged or destroyed many properties, determined by analyzing building damage whereas especially near the coasts. undamaged buildings can provide upper bounds to the Since the hurricane, various agencies have conducted wind speeds. In 2006, WSEC developed a wind speed- building damage assessments to estimate the wind fields damage scale entitled the EF-scale, named after the late that occurred during the storm. The National Oceanic Dr. Ted Fujita. The author served on this committee. and Atmospheric Administration (NOAA, 2005a) Wind speed-damage correlation is useful especially conducted aerial and ground surveys and published a when few ground-based wind speed measurements are wind speed map. Likewise, the Federal Emergency available. Such was the case in Hurricane Katrina when Management Agency (FEMA, 2006) conducted a similar most of the automated stations failed before the eye study and produced another wind speed map. Both reached the coast. However, mobile towers were studies used a combination of wind speed-damage deployed by Texas Tech University (TTU) at Slidell, LA correlation, actual wind measurements, as well as and Bay St. -
Blizzards in the Upper Midwest, 1980-2013
University of North Dakota UND Scholarly Commons Theses and Dissertations Theses, Dissertations, and Senior Projects January 2015 Blizzards In The ppU er Midwest, 1980-2013 Lawrence Burkett Follow this and additional works at: https://commons.und.edu/theses Recommended Citation Burkett, Lawrence, "Blizzards In The ppeU r Midwest, 1980-2013" (2015). Theses and Dissertations. 1749. https://commons.und.edu/theses/1749 This Thesis is brought to you for free and open access by the Theses, Dissertations, and Senior Projects at UND Scholarly Commons. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of UND Scholarly Commons. For more information, please contact [email protected]. BLIZZARDS IN THE UPPER MIDWEST, 1980-2013 by Lawrence Burkett Bachelor of Science, University of North Dakota, 2012 Master of Science, University of North Dakota, 2015 A Thesis Submitted to the Graduate Faculty of the University of North Dakota in partial fulfilment of the requirements for the degree of Master of Science Grand Forks, North Dakota August 2015 Copyright 2015 Lawrence Burkett ii PERMISSION Title Blizzards in the Upper Midwest, 1980-2013 Department Geography Degree Master of Science In presenting this thesis in partial fulfillment of the requirements for a graduate degree from the University of North Dakota, I agree that the library of this University shall make it freely available for inspection. I further agree that the permission for extensive copying for scholarly purposes may be granted by the professor who supervised my thesis work or, in his absence, by the Chairperson of the department of the Dean of the School of Graduate Studies. -
Hurricanes Katrina and Rita – Louisiana's Response And
HURRICANES KATRINA AND RITA – LOUISIANA’S RESPONSE AND RECOVERY Ray A. Mumphrey, P.E., Louisiana Department of Transportation and Development, Baton Rouge, Louisiana, and Hossein Ghara, P.E., MBA, Louisiana Department of Transportation and Development, Baton Rouge, Louisiana KEYWORDS: Louisiana Department of Transportation and Development, National Oceanic and Atmospheric Administration, Federal Emergency Management Agency, Contra flow, Inundation, Fixed and Movable Bridges, Open Water Bridges, Coastal Protection and Restoration Authority ABSTRACT: Louisiana’s transportation and hurricane protection system took a tremendous blow from two major hurricanes that struck the coast of Louisiana in 2005, hurricanes Katrina and Rita. This presentation will introduce the audience to the transportation infrastructure damage Louisiana experienced as a result of these two storms and will describe how Louisiana is responding to the disasters and our road to recovery. Figure 1 - Hurricanes that hit the coast of Louisiana since 1900 As Louisiana residents, we become accustom to the ever present threat of hurricanes. Refer to figure 1. Much like other parts of the country, which have other natural disasters such as tornados, mud slides, avalanches or earthquakes, we just prepare for the worst, minimize loss of life and property, and thank God when it’s all over. As engineers we know we can always rebuild structures, and possibly restore livelihoods, but loss of life is not replaceable. 2005 STORMS Hurricane Katrina was a category 4 storm when it made landfall on August 29, 2005, along the Louisiana – Mississippi Gulf Coast. The storm was fast moving and provided minimum time for preparation. Refer to figure 2. “Hurricane Katrina was the most destructive hurricane to ever strike the U.S.” NOAA Just as we were getting back on our feet from the impacts of Hurricane Katrina, BAM! We were faced with another storm, Rita. -
A Rapid Forecasting and Mapping System of Storm Surge and Coastal Flooding
AUGUST 2020 Y A N G E T A L . 1663 A Rapid Forecasting and Mapping System of Storm Surge and Coastal Flooding KUN YANG,VLADIMIR A. PARAMYGIN, AND Y. PETER SHENG Department of Civil and Coastal Engineering, University of Florida, Gainesville, Florida (Manuscript received 16 July 2019, in final form 2 March 2020) ABSTRACT A prototype of an efficient and accurate rapid forecasting and mapping system (RFMS) of storm surge is presented. Given a storm advisory from the National Hurricane Center, the RFMS can generate a coastal inundation map on a high-resolution grid in 1 min (reference system Intel Core i7–3770K). The foundation of the RFMS is a storm surge database consisting of high-resolution simulations of 490 optimal storms generated by a robust storm surge modeling system, Curvilinear-Grid Hydrodynamics in 3D (CH3D-SSMS). The RFMS uses an efficient quick kriging interpolation scheme to interpolate the surge response from the storm surge database, which considers tens of thousands of combinations of five landfall parameters of storms: central pressure deficit, radius to maximum wind, forward speed, heading direction, and landfall location. The RFMS is applied to southwest Florida using data from Hurricane Charley in 2004 and Hurricane Irma in 2017, and to the Florida Panhandle using data from Hurricane Michael in 2018 and validated with observed high water mark data. The RFMS results agree well with observation and direct simulation of the high-resolution CH3D- SSMS. The RFMS can be used for real-time forecasting during a hurricane or ‘‘what-if’’ scenarios for miti- gation planning and preparedness training, or to produce a probabilistic flood map. -
2021 Rio Grande Valley/Deep S. Texas Hurricane Guide
The Official Rio Grande Valley/Deep South Texas HURRICANE GUIDE 2021 IT ONLY TAKES ONE STORM! weather.gov/rgv A Letter to Residents After more than a decade of near-misses, 2020 reminded the Rio Grande Valley and Deep South Texas that hurricanes are still a force to be reckoned with. Hurricane Hanna cut a swath from Padre Island National Seashore in Kenedy County through much of the Rio Grande Valley in late July, leaving nearly $1 billion in agricultural and property damage it its wake. While many may now think that we’ve paid our dues, that sentiment couldn’t be further from the truth! The combination of atmospheric and oceanic patterns favorable for a landfalling hurricane in the Rio Grande Valley/Deep South Texas region can occur in any season, including this one. Residents can use the experience of Hurricane Hanna in 2020 as a great reminder to be prepared in 2021. Hurricanes bring a multitude of hazards including flooding rain, damaging winds, deadly storm surge, and tornadoes. These destructive forces can displace you from your home for months or years, and there are many recent cases in the United States and territories where this has occurred. Hurricane Harvey (2017), Michael (2018, Florida Panhandle), and Laura (2020, southwest Louisiana) are just three such devastating events. This guide can help you and your family get prepared. Learn what to do before, during and after a storm. Your plan should include preparations for your home or business, gathering supplies, ensuring your insurance is up to date, and planning with your family for an evacuation. -
National Oceanic and Atmospheric Administration (NOAA)
1 2 3 4 National Oceanic and Atmospheric Hurricane Katrina 23–30 August 2005—Tropical How Does A Hurricane Form? L Administration (NOAA)’s GOES Cyclone Report Cold, unstable air Hurricanes are the most awesome, violent storms on Earth. They form over warm ocean waters. Actually, the term “hurricane” is used only for the large storms that form over the Atlantic Ocean or eastern Pacific Ocean. NOAA’s Geostationary Operational Environmental Satellites (GOES) continuously observe and measure Richard D. Knabb, Jamie R. Rhome, and Daniel P. Brown meteorological phenomena in real time, providing the meteorological community and the atmospheric scien- National Hurricane Center, 20 December 2005 tist observational and measurement data of the Western Hemisphere. Forecasting the approach of severe The generic, scientific term for storms, the GOES system of weather satellites provides timely environmental information to meteorologists Katrina was an extraordinarily powerful and deadly hurricane that carved a wide swath of catastrophic these storms, wherever they Warm, humid air and their audiences alike—graphically displaying the intensity, path, and size of storms. In addition to short- damage and inflicted large loss of life. It was the costliest and one of the five deadliest hurricanes to ever occur, is tropical cyclone. term weather forecasting, GOES data is used to support atmospheric science research, numerical weather strike the United States. Katrina first caused fatalities and damage in southern Florida as a Category 1 Depending on where in the prediction models, and environmental sensor design and development. hurricane on the Saffir-Simpson Hurricane Scale. After reaching Category 5 intensity over the central Gulf of world they are born, other H Typhoons Warm Mexico, Katrina weakened to Category 3 before making landfall on the northern Gulf coast. -
Investigation and Prediction of Hurricane Eyewall
INVESTIGATION AND PREDICTION OF HURRICANE EYEWALL REPLACEMENT CYCLES By Matthew Sitkowski A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy (Atmospheric and Oceanic Sciences) at the UNIVERSITY OF WISCONSIN-MADISON 2012 Date of final oral examination: 4/9/12 The dissertation is approved by the following members of the Final Oral Committee: James P. Kossin, Affiliate Professor, Atmospheric and Oceanic Sciences Daniel J. Vimont, Professor, Atmospheric and Oceanic Sciences Steven A. Ackerman, Professor, Atmospheric and Oceanic Sciences Jonathan E. Martin, Professor, Atmospheric and Oceanic Sciences Gregory J. Tripoli, Professor, Atmospheric and Oceanic Sciences i Abstract Flight-level aircraft data and microwave imagery are analyzed to investigate hurricane secondary eyewall formation and eyewall replacement cycles (ERCs). This work is motivated to provide forecasters with new guidance for predicting and better understanding the impacts of ERCs. A Bayesian probabilistic model that determines the likelihood of secondary eyewall formation and a subsequent ERC is developed. The model is based on environmental and geostationary satellite features. A climatology of secondary eyewall formation is developed; a 13% chance of secondary eyewall formation exists when a hurricane is located over water, and is also utilized by the model. The model has been installed at the National Hurricane Center and has skill in forecasting secondary eyewall formation out to 48 h. Aircraft reconnaissance data from 24 ERCs are examined to develop a climatology of flight-level structure and intensity changes associated with ERCs. Three phases are identified based on the behavior of the maximum intensity of the hurricane: intensification, weakening and reintensification. -
Ref. Accweather Weather History)
NOVEMBER WEATHER HISTORY FOR THE 1ST - 30TH AccuWeather Site Address- http://forums.accuweather.com/index.php?showtopic=7074 West Henrico Co. - Glen Allen VA. Site Address- (Ref. AccWeather Weather History) -------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------- AccuWeather.com Forums _ Your Weather Stories / Historical Storms _ Today in Weather History Posted by: BriSr Nov 1 2008, 02:21 PM November 1 MN History 1991 Classes were canceled across the state due to the Halloween Blizzard. Three foot drifts across I-94 from the Twin Cities to St. Cloud. 2000 A brief tornado touched down 2 miles east and southeast of Prinsburg in Kandiyohi county. U.S. History # 1861 - A hurricane near Cape Hatteras, NC, battered a Union fleet of ships attacking Carolina ports, and produced high tides and high winds in New York State and New England. (David Ludlum) # 1966 - Santa Anna winds fanned fires, and brought record November heat to parts of coastal California. November records included 86 degrees at San Francisco, 97 degrees at San Diego, and 101 degrees at the International airport in Los Angeles. Fires claimed the lives of at least sixteen firefighters. (The Weather Channel) # 1968 - A tornado touched down west of Winslow, AZ, but did little damage in an uninhabited area. (The Weather Channel) # 1987 - Early morning thunderstorms in central Arizona produced hail an inch in diameter at Williams and Gila Bend, and drenched Payson with 1.86 inches of rain. Hannagan Meadows AZ, meanwhile, was blanketed with three inches of snow. Unseasonably warm weather prevailed across the Ohio Valley. Afternoon highs of 76 degrees at Beckley WV, 77 degrees at Bluefield WV, and 83 degrees at Lexington KY were records for the month of November. -
Report of the Governor's Commission to Rebuild Texas
EYE OF THE STORM Report of the Governor’s Commission to Rebuild Texas John Sharp, Commissioner BOARD OF REGENTS Charles W. Schwartz, Chairman Elaine Mendoza, Vice Chairman Phil Adams Robert Albritton Anthony G. Buzbee Morris E. Foster Tim Leach William “Bill” Mahomes Cliff Thomas Ervin Bryant, Student Regent John Sharp, Chancellor NOVEMBER 2018 FOREWORD On September 1 of last year, as Hurricane Harvey began to break up, I traveled from College Station to Austin at the request of Governor Greg Abbott. The Governor asked me to become Commissioner of something he called the Governor’s Commission to Rebuild Texas. The Governor was direct about what he wanted from me and the new commission: “I want you to advocate for our communities, and make sure things get done without delay,” he said. I agreed to undertake this important assignment and set to work immediately. On September 7, the Governor issued a proclamation formally creating the commission, and soon after, the Governor and I began traveling throughout the affected areas seeing for ourselves the incredible destruction the storm inflicted Before the difficulties our communities faced on a swath of Texas larger than New Jersey. because of Harvey fade from memory, it is critical that Since then, my staff and I have worked alongside we examine what happened and how our preparation other state agencies, federal agencies and local for and response to future disasters can be improved. communities across the counties affected by Hurricane In this report, we try to create as clear a picture of Harvey to carry out the difficult process of recovery and Hurricane Harvey as possible. -
Hurricane Waves in the Ocean
WAVE-INDUCED SURGES DURING HURRICANE OPAL Chung-Sheng Wu*, Arthur A. Taylor, Jye Chen and Wilson A. Shaffer Meteorological Development Laboratory National Weather Service/NOAA, Silver Spring, Maryland 1. INTRODUCTION Hurricanes storm surges and waves at the coastline Holliday (1977) developed a simple formula relating the have been the cause of damages in the coastal zone. cyclone’s pressure drop to maximum sustained wind for On the U.S. Gulf Coast, for example, Hurricane Opal the Western Pacific. A more general form was (1995) made landfall near the time of low tide and proposed by Holland (1980). The merit of these models resulted in severe flooding by storm surges and waves. is that they are analytical models for the surface wind Storm surge can penetrate miles inland from the coast. profile in a hurricane. A similar formulation was applied Waves ride above the surge levels, causing wave runup to the wave model in the present work. The framework and mean water level set-up. These wave effects are of the hurricane wave model is described below. significant near the landfall area and are affected by the process that hurricane approaches the coastline. 2.1 HURRICANE WIND AND STORM SURGES During 1950-1977, hurricane wave models based on Holland (1980) employed a standard pressure profile for significant wave height and period were developed (e.g. a tropical cyclone and obtained the popular gradient Bretschneider, 1957; Ross, 1976) for marine weather wind profile. Jelesnianski and Taylor (1976) assumed a prediction and offshore oil industry design. Cardone surface wind profile in the pressure equation.