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A Climatology and Comparison of Parameters for Significant Tornado
106 WEATHER AND FORECASTING VOLUME 27 A Climatology and Comparison of Parameters for Significant Tornado Events in the United States JEREMY S. GRAMS AND RICHARD L. THOMPSON NOAA/NWS/Storm Prediction Center, Norman, Oklahoma DARREN V. SNIVELY Department of Geography, Ohio University, Athens, Ohio JAYSON A. PRENTICE Department of Geological and Atmospheric Sciences, Iowa State University, Ames, Iowa GINA M. HODGES AND LARISSA J. REAMES School of Meteorology, University of Oklahoma, Norman, Oklahoma (Manuscript received 18 January 2011, in final form 30 August 2011) ABSTRACT A sample of 448 significant tornado events was collected, representing a population of 1072 individual tornadoes across the contiguous United States from 2000 to 2008. Classification of convective mode was assessed from radar mosaics for each event with the majority classified as discrete cells compared to quasi- linear convective systems and clusters. These events were further stratified by season and region and com- pared with a null-tornado database of 911 significant hail and wind events that occurred without nearby tornadoes. These comparisons involved 1) environmental variables that have been used through the past 25– 50 yr as part of the approach to tornado forecasting, 2) recent sounding-based parameter evaluations, and 3) convective mode. The results show that composite and kinematic parameters (whether at standard pressure levels or sounding derived), along with convective mode, provide greater discrimination than thermodynamic parameters between significant tornado versus either significant hail or wind events that occurred in the absence of nearby tornadoes. 1. Introduction severe thunderstorms and tornadoes (e.g., Bluestein 1999; Davies-Jones et al. 2001; Wilhelmson and Wicker Severe weather forecasting has evolved considerably 2001). -
Twisters in Two Cities: Stuctural Ritualization
TWISTERS IN TWO CITIES: STUCTURAL RITUALIZATION THEORY AND DISASTERS By KEVIN M. JOHNSON Bachelor of Arts in Psychology Northeastern State University Tahlequah, Oklahoma 2011 Master of Science in Sociology Oklahoma State University Stillwater, Oklahoma 2013 Submitted to the Faculty of the Graduate College of the Oklahoma State University in partial fulfillment of the requirements for the Degree of DOCTOR OF PHILOSOPHY May, 2019 TWISTERS IN TWO CITIES: STRUCTURAL RITUALIZATION THEORY AND DISASTERS Dissertation Approved: Dr. Duane A. Gill Dissertation Adviser Dr. J. David Knottnerus Dr. Monica Whitham Dr. Alex Greer ii ACKNOWLEDGEMENTS I would first like to thank my committee members – Dr. Duane Gill, Dr. J. David Knottnerus, Dr. Monica Whitham, and Dr. Alex Greer – for their insight and support throughout the writing of this dissertation. I am particularly grateful for Dr. Gill and Dr. Knottnerus, who have invested tremendous time and energy in mentoring and helping me develop as a sociologist and a thinker. I have had the privilege of working with some of my academic heroes on this project, and feel very fortunate to be able to make that claim. I would also like to thank my fellow graduate colleagues, Dr. Dakota Raynes, Christine Thomas, and many others, who were always willing to discuss various issues related to this research and countless other topics when needed. Your contributions to this work extend beyond the words on the page – thank you! Finally, I would like to acknowledge my family for their unwavering support and confidence in me throughout this process. Kasey, Gabriel, Ewok, and Leia: you have been my foundation, particularly in the toughest times, and I hope you all feel the joy of this accomplishment because it could not have happened without you. -
Community at the Center of the Storm | 87
ABSTRACT This article is based on a Community at the keynote presentation delivered at the Alabama Poverty Project Lifetime of Learning Summit at the University of Center of the Storm Montevallo on September 30, 2011. Conference organizers asked for the Marybeth Lima perspective of a survivor of a significant natural disaster, for information Before hurricane Katrina, I was steady and regarding Louisiana’s recovery from confident in my job as an associate professor in the hurricanes Katrina and Rita in the short- department of biological & agricultural engineering at and long-term, and for advice on re- LSU. I had been doing service-learning since 1998, building and recovery within the and I worked very closely with the staff from the framework of poverty eradication. This Center for Community Engagement, Learning and paper details the author’s experiences in Leadership, or CCELL. In working closely with CCELL and with my community, I had developed the LSU the 2005 hurricanes and lessons learned Community Playground Project. through subsequent community- I teach a required, first-year biological engagement efforts. engineering design course in which my students partner with local public elementary schools to work with the true experts at play, the children at the schools, to develop dream playground designs at those schools. My class consists of two to three sections of students, and each section is assigned a separate public school. College students work collaboratively in teams of three to four people with the elementary school students, teachers, and school administrators, and sometimes parents or school improvement teams, to develop playground designs. -
Human Vulnerability to Tornadoes in the United States Is Highest In
1 Human vulnerability to tornadoes in the United States is highest in 2 urbanized areas of the Mid South ∗ 3 James B. Elsner and Tyler Fricker 4 Florida State University, Tallahassee, Florida ∗ 5 Corresponding author address: James B. Elsner, Department of Geography, Florida State Univer- 6 sity, 113 Collegiate Loop, Tallahassee, FL 32301. 7 E-mail: [email protected] Generated using v4.3.2 of the AMS LATEX template 1 ABSTRACT 8 Risk factors for tornado casualties are well known. Less understood is how 9 and to what degree these factors, after controlling for strength and the number 10 of people affected, vary over space and time. Here we fit models to casualty 11 counts from all casualty-producing tornadoes during the period 1995–2016 in 12 order to quantify the interactions between population and energy on casualty 13 (deaths plus injuries) rates. Results show that the more populated areas of the 14 Mid South are substantially and significantly more vulnerable to casualties 15 than elsewhere in the country. In this region casualty rates are significantly 16 higher on the weekend. Night and day casualty rates are similar regardless 17 of where the tornadoes occur. States with a high percentage of older people 18 (65+) tend to have greater vulnerability perhaps related to less agility and 19 fewer communication options. 2 20 1. Introduction 21 Nearly one fifth of all natural-hazards fatalities in the United States are the direct result of tor- 22 nadoes (National Oceanic and Atmospheric Administration 2015). A tornado that hits a city is 23 capable of inflicting hundreds or thousands of casualties. -
Illinois Tornadoes Prior to 1916
Transactions of the Illinois State Academy of Science (1993), Volume 86, 1 and 2, pp. 1 - 10 Illinois Tornadoes Prior to 1916 Wayne M. Wendland Illinois State Water Survey Champaign IL Herbert Hoffman National Weather Service Romeoville IL ABSTRACT An effort to chronicle Illinois tornadoes occurring prior to 1916 is summarized. From the more than 440 total Illinois tornado occurrences identified in the literature from that period, the list was culled to 325 individual events. Annual and mean monthly frequencies are shown and discussed relative to the modern record. The present tornado data set includes location, time, and to a lesser extent, number injured, number killed and damage for each tornado event. Prominent tornadoes from the record are discussed, as data are available. INTRODUCTION The history of tornadoes in Illinois is rather well known since the mid-1950s (e.g., see Wilson & Changnon, 1971; and Wendland & Guinan, 1988). That record is believed to be essentially complete since the U.S. Weather Bureau inaugurated a concerted effort to record all such events at that time. Earlier,tornado accounts may be suspect since a record of such a small scale event is largely dependent on population density, awareness, and maintenance of a continuous record. Although the U.S. Army Signal Corps and U.S. Weather Bureau accepted tornado information for archival purposes through the years, a complete and continuous record only exists since the mid-1950s. In spite of the incomplete nature of earlier tornado records, useful information of a climatological nature can be gleaned. This paper represents an initial attempt to document the record of Illinois tornadoes prior to 1916. -
3.2 an Evaluation of Tornado Intensity Using Velocity and Strength Attributes from the Wsr-88D Mesocyclone Detection Algorithm
3.2 AN EVALUATION OF TORNADO INTENSITY USING VELOCITY AND STRENGTH ATTRIBUTES FROM THE WSR-88D MESOCYCLONE DETECTION ALGORITHM Darrel M. Kingfield*,1,2, James G. LaDue3, and Kiel L. Ortega1,2 1Cooperative Institute for Mesoscale Meteorological Studies (CIMMS), Norman, OK 2NOAA/OAR/National Severe Storms Laboratory (NSSL), Norman, OK 3NOAA/NWS/OCWWS/Warning Decision Training Branch (WDTB), Norman, OK 1. INTRODUCTION undergone several improvements since these studies, including the integration of super-resolution data. National Weather Service (NWS) service Super-resolution data (Torres and Curtis, 2007) at the assessments following the 2011 April 27 southeast split-cut elevations reduces the effective beamwidth to US tornado outbreak, and the 2011 May 22 Joplin 1.02 from the legacy 1.38 , allowing for vortex tornado found that the population failed to personalize signatures⁰ to be resolved at longer⁰ ranges from the the potential severity of the tornadoes for which they radar (Brown et al. 2002; Brown et al. 2005). In this were warned. The lack of specific information paper, we investigate how the MDA output correlates contained within the warnings has been cited as a to maximum intensity found in a tornado path. major reason why more action was not taken (NOAA, 2011a, 2011b). As a result, a number of meetings 2. DATA & METHODS amongst government, the private and the academic sectors have begun to formulate a plan to improve 2.1 Acquisition & Playback impact-based warning services. In fact, this is the number one goal of the Weather Ready Nation The initial tornado track dataset was composed initiative within the NWS (NOAA, 2012). -
Observations and Laboratory Simulations of Tornadoes in Complex Topographical Regions Christopher D
Iowa State University Capstones, Theses and Graduate Theses and Dissertations Dissertations 2012 Observations and Laboratory Simulations of Tornadoes in Complex Topographical Regions Christopher D. Karstens Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/etd Part of the Atmospheric Sciences Commons, and the Meteorology Commons Recommended Citation Karstens, Christopher D., "Observations and Laboratory Simulations of Tornadoes in Complex Topographical Regions" (2012). Graduate Theses and Dissertations. 12778. https://lib.dr.iastate.edu/etd/12778 This Dissertation is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Graduate Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. Observations and laboratory simulations of tornadoes in complex topographical regions by Christopher Daniel Karstens A dissertation submitted to the graduate faculty in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Major: Meteorology Program of Study Committee: William A. Gallus, Jr., Major Professor Partha P. Sarkar Bruce D. Lee Catherine A. Finley Raymond W. Arritt Xiaoqing Wu Iowa State University Ames, Iowa 2012 Copyright © Christopher Daniel Karstens, 2012. All rights reserved. ii TABLE OF CONTENTS LIST OF FIGURES .............................................................................................. -
Community Organizations Under Stress: a Study of Interorganizational Communication Networks During Natural Disasters
71-17,967 BROUILLETTE, John Robert, 1935- COMMUNITY ORGANIZATIONS UNDER STRESS: A STUDY OF INTERORGANIZATIONAL COMMUNICATION NETWORKS DURING NATURAL DISASTERS. The Ohio State University, Ph.D., 1970 Sociology, general University Microfilms,A XEROX Company , Ann Arbor. Michigan COMMUNITY ORGANIZATIONS UNDER STRESS: A STUDY OF INTERORGANIZATIONAL COMMUNICATION NETWORKS DURING NATURAL DISASTERS DISSERTATION Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of The Ohio State University By John Robert Brouillette, B.S., M.A. ****** The Ohio State University 1970 Approved by t Adviser* /} Department of SociofogyDepartment Sociology ACKNOWLEDGMENTS The research in this dissertation was supported in part by PHS Grant 5 R01 MH 15399-02 from the Center for Studies of Mental Health and Social Problems, Applied Research Branch, National Insti tute of Mental Health. Many faculty members have been instrumental in assisting me throughout my graduate studies. Foremost among them was my adviser, Dr. Russell R. Dynes, whose untiring guidance, encouragement, and support were always forthcoming when they were needed most. Also I would like to express my sincere appreciation to Dr. E. L. Quar- antelli who, with Dr. Dynes, provided an invaluable graduate training program at the Disaster Research Center which allowed me to apply and advance the sociological knowledge I had been exposed to earlier in formal course work. A special word of thanks belongs to Dr. John F. Cuber who introduced me to The Ohio State University as a teaching assistant under him and who ushered me out when he sat on my final Doctoral oral examination. He has been a significant influence and inspiration to me throughout my graduate program. -
The Year That Shook the Rich: a Review of Natural Disasters in 2011
THE YEAR THAT SHOOK THE RICH: A REVIEW OF NATURAL DISASTERS IN 2011 The Brookings Institution – London School of Economics Project on Internal Displacement March 2012 Design: [email protected] Cover photo: © Thinkstock.com Back cover photos: left / © Awcnz62 | Dreamstime.com; right / © IOM 2011 - MPK0622 (Photo: Chris Lom) THE YEAR THAT SHOOK THE RICH: A REVIEW OF NATURAL DISASTERS IN 2011 By Elizabeth Ferris and Daniel Petz March 2012 PUBLISHED BY: THE BROOKINGS INSTITUTION – LONDON SCHOOL OF ECONOMICS PROJECT ON INTERNAL DISPLACEMENT Bangkok, Thailand — Severe monsoon floods, starting in late July 2011, affected millions of people. A truck with passengers aboard drives through a heavily flooded street. Photo: UN/Mark Garten TABLE OF CONTENTS Acronyms ................................................................................................................................. vi Foreword ................................................................................................................................. ix Executive Summary ................................................................................................................. xi Introduction .............................................................................................................................. xv Chapter 1 The Year that Shook the Rich ...................................................... 1 Section 1 Disasters in the “Rich” World, Some Numbers ............................................ 5 Section 2 Japan: The Most Expensive Disaster -
A Background Investigation of Tornado Activity Across the Southern Cumberland Plateau Terrain System of Northeastern Alabama
DECEMBER 2018 L Y Z A A N D K N U P P 4261 A Background Investigation of Tornado Activity across the Southern Cumberland Plateau Terrain System of Northeastern Alabama ANTHONY W. LYZA AND KEVIN R. KNUPP Department of Atmospheric Science, Severe Weather Institute–Radar and Lightning Laboratories, Downloaded from http://journals.ametsoc.org/mwr/article-pdf/146/12/4261/4367919/mwr-d-18-0300_1.pdf by NOAA Central Library user on 29 July 2020 University of Alabama in Huntsville, Huntsville, Alabama (Manuscript received 23 August 2018, in final form 5 October 2018) ABSTRACT The effects of terrain on tornadoes are poorly understood. Efforts to understand terrain effects on tornadoes have been limited in scope, typically examining a small number of cases with limited observa- tions or idealized numerical simulations. This study evaluates an apparent tornado activity maximum across the Sand Mountain and Lookout Mountain plateaus of northeastern Alabama. These plateaus, separated by the narrow Wills Valley, span ;5000 km2 and were impacted by 79 tornadoes from 1992 to 2016. This area represents a relative regional statistical maximum in tornadogenesis, with a particular tendency for tornadogenesis on the northwestern side of Sand Mountain. This exploratory paper investigates storm behavior and possible physical explanations for this density of tornadogenesis events and tornadoes. Long-term surface observation datasets indicate that surface winds tend to be stronger and more backed atop Sand Mountain than over the adjacent Tennessee Valley, potentially indicative of changes in the low-level wind profile supportive to storm rotation. The surface data additionally indicate potentially lower lifting condensation levels over the plateaus versus the adjacent valleys, an attribute previously shown to be favorable for tornadogenesis. -
Hazard Mitigation Plan Lapeer County, MI
+ ddddddddd Hazard Mitigation Plan Lapeer County, MI 2015 This document was prepared by the2013 GLS Region V Planning and Development CommissionThis document was preparedstaff byin the collaboration Lapeer County Office of Emergency with Managementthe Lapeer County Office of Emergencyin collaboration with GLSManagement Region V Planning and. Development Commission staff. TABLE OF CONTENTS I. Introduction A. Introduction ..................................................................................... 1 B. Goals and Objectives ....................................................................... 5 C. Historical Perspective ....................................................................... 5 D. Regional Setting ............................................................................... 8 E. Climate ............................................................................................. 9 F. Population and Housing .................................................................. 11 G. Land Use Characteristics ................................................................. 14 H. Economic Profile.............................................................................. 14 I. Employment................................................................................... 15 J. Community Facilities/Public Safety ................................................. 16 K. Fire Protection and Emergency Dispatch Services .......................... 16 L. Utilities, Sewer, and Water ............................................................ -
Florida's Tornado Climatology: Occurrence Rates, Casualties, and Property Losses Emily Ryan
Florida State University Libraries Electronic Theses, Treatises and Dissertations The Graduate School 2018 Florida's Tornado Climatology: Occurrence Rates, Casualties, and Property Losses Emily Ryan Follow this and additional works at the DigiNole: FSU's Digital Repository. For more information, please contact [email protected] FLORIDA STATE UNIVERSITY COLLEGE OF SOCIAL SCIENCES & PUBLIC POLICY FLORIDA'S TORNADO CLIMATOLOGY: OCCURRENCE RATES, CASUALTIES, AND PROPERTY LOSSES By EMILY RYAN A Thesis submitted to the Department of Geography in partial fulfillment of the requirements for the degree of Master of Science 2018 Copyright c 2018 Emily Ryan. All Rights Reserved. Emily Ryan defended this thesis on April 6, 2018. The members of the supervisory committee were: James B. Elsner Professor Directing Thesis David C. Folch Committee Member Mark W. Horner Committee Member The Graduate School has verified and approved the above-named committee members, and certifies that the thesis has been approved in accordance with university requirements. ii TABLE OF CONTENTS List of Tables . v List of Figures . vi Abstract . viii 1 Introduction 1 1.1 Definitions . 1 1.2 Where Tornadoes Occur . 3 1.3 Tornadoes in Florida . 4 1.4 Goals and Objectives . 6 1.5 Tornado Climatology as Geography . 6 1.6 Outline of the Thesis . 7 2 Data and Methods 9 2.1 Data . 9 2.1.1 Tornado Data . 9 2.1.2 Tropical Cyclone Tornado Data . 11 2.1.3 Property Value Data . 13 2.2 Statistical Methods . 15 2.3 Analysis Variables . 16 2.3.1 Occurrence Rates . 16 2.3.2 Casualties . 16 2.3.3 Property Exposures .