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Developing a Tornado Emergency Plan for Schools in Michigan
A GUIDE TO DEVELOPING A TORNADO EMERGENCY PLAN FOR SCHOOLS Also includes information for Instruction of Tornado Safety The Michigan Committee for Severe Weather Awareness March 1999 1 TABLE OF CONTENTS: A GUIDE TO DEVELOPING A TORNADO EMERGENCY PLAN FOR SCHOOLS IN MICHIGAN I. INTRODUCTION. A. Purpose of Guide. B. Who will Develop Your Plan? II. Understanding the Danger: Why an Emergency Plan is Needed. A. Tornadoes. B. Conclusions. III. Designing Your Plan. A. How to Receive Emergency Weather Information B. How will the School Administration Alert Teachers and Students to Take Action? C. Tornado and High Wind Safety Zones in Your School. D. When to Activate Your Plan and When it is Safe to Return to Normal Activities. E. When to Hold Departure of School Buses. F. School Bus Actions. G. Safety during Athletic Events H. Need for Periodic Drills and Tornado Safety Instruction. IV. Tornado Spotting. A. Some Basic Tornado Spotting Techniques. APPENDICES - Reference Materials. A. National Weather Service Products (What to listen for). B. Glossary of Weather Terms. C. General Tornado Safety. D. NWS Contacts and NOAA Weather Radio Coverage and Frequencies. E. State Emergency Management Contact for Michigan F. The Michigan Committee for Severe Weather Awareness Members G. Tornado Safety Checklist. H. Acknowledgments 2 I. INTRODUCTION A. Purpose of guide The purpose of this guide is to help school administrators and teachers design a tornado emergency plan for their school. While not every possible situation is covered by the guide, it will provide enough information to serve as a starting point and a general outline of actions to take. -
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). -
Bustersimpson-Surveyor.Pdf
BUSTER SIMPSON // SURVEYOR BUSTER SIMPSON // SURVEYOR FRYE ART MUSEUM 2013 EDITED BY SCOTT LAWRIMORE 6 Foreword 8 Acknowledgments Carol Yinghua Lu 10 A Letter to Buster Simpson Charles Mudede 14 Buster Simpson and a Philosophy of Urban Consciousness Scott Lawrimore 20 The Sky's the Limit 30 Selected Projects 86 Selected Art Master Plans and Proposals Buster Simpson and Scott Lawrimore 88 Rearview Mirror: A Conversation 100 Buster Simpson // Surveyor: Installation Views 118 List of Works 122 Artist Biography 132 Maps and Legends FOREWORD WOODMAN 1974 Seattle 6 In a letter to Buster Simpson published in this volume, renowned Chinese curator and critic Carol Yinghua Lu asks to what extent his practice is dependent on the ideological and social infrastructure of the city and the society in which he works. Her question from afar ruminates on a lack of similar practice in her own country: Is it because China lacks utopian visions associated with the hippie ethos of mid-twentieth-century America? Is it because a utilitarian mentality pervades the social and political context in China? Lu’s meditations on the nature of Buster Simpson’s artistic practice go to the heart of our understanding of his work. Is it utopian? Simpson would suggest it is not: his experience at Woodstock “made me realize that working in a more urban context might be more interesting than this utopian, return-to-nature idea” (p. 91). To understand the nature of Buster Simpson’s practice, we need to accompany him to the underbelly of the city where he has lived and worked for forty years. -
The Fujita Scale Is Used to Rate the Intensity of a Tornado by Examining the Damage Caused by the Tornado After It Has Passed Over a Man-Made Structure
The Fujita Scale is used to rate the intensity of a tornado by examining the damage caused by the tornado after it has passed over a man-made structure. The "Percentage of All Tornadoes 1950- 1994" pie chart reveals that the vast majority of tornadoes are either weak or do damage that can only be attributed to a weak tornado. Only a small percentage of tornadoes can be correctly classed as violent. Such a chart became possible only after the acceptance of the Fujita Scale as the official classification system for tornado damage. It is quite possible that an even higher percentage of all tornadoes are weak. Each year the National Weather Service documents about 1000 tornado touchdowns in the United States. There is evidence that 1000 or more additional weak tornadoes may occur each year and go completely undocumented. The "Percentage of Tornado-Related Deaths 1950-1994" pie chart shows that while violent tornadoes are few in number, they cause a very high percentage of tornado-related deaths. The Tornado Project has analyzed data prior to 1950, and found that the percentage of deaths from violent tornadoes was even greater in the past. This is because the death tolls prior to the introduction of the forecasting/awareness programs were enormous: 695 dead(Missouri-Illinois-Indiana, March 18, 1925); 317 dead(Natchez, Mississippi, May 7, 1840);.255 dead(St. Louis, Missouri and East St. Louis, Illinois, May 27, 1896); 216 dead(Tupelo, Mississippi, April 5, 1936); 203 dead(Gainesville, GA, April 6, 1936). In more recent times, no single tornado has killed more than 50 people since 1971. -
PRC.15.1.1 a Publication of AXA XL Risk Consulting
Property Risk Consulting Guidelines PRC.15.1.1 A Publication of AXA XL Risk Consulting WINDSTORMS INTRODUCTION A variety of windstorms occur throughout the world on a frequent basis. Although most winds are related to exchanges of energy (heat) between different air masses, there are a number of weather mechanisms that are involved in wind generation. These depend on latitude, altitude, topography and other factors. The different mechanisms produce windstorms with various characteristics. Some affect wide geographical areas, while others are local in nature. Some storms produce cooling effects, whereas others rapidly increase the ambient temperatures in affected areas. Tropical cyclones born over the oceans, tornadoes in the mid-west and the Santa Ana winds of Southern California are examples of widely different windstorms. The following is a short description of some of the more prevalent wind phenomena. A glossary of terms associated with windstorms is provided in PRC.15.1.1.A. The Beaufort Wind Scale, the Saffir/Simpson Hurricane Scale, the Australian Bureau of Meteorology Cyclone Severity Scale and the Fugita Tornado Scale are also provided in PRC.15.1.1.A. Types Of Windstorms Local Windstorms A variety of wind conditions are brought about by local factors, some of which can generate relatively high wind conditions. While they do not have the extreme high winds of tropical cyclones and tornadoes, they can cause considerable property damage. Many of these local conditions tend to be seasonal. Cold weather storms along the East coast are known as Nor’easters or Northeasters. While their winds are usually less than hurricane velocity, they may create as much or more damage. -
What Are We Doing with (Or To) the F-Scale?
5.6 What Are We Doing with (or to) the F-Scale? Daniel McCarthy, Joseph Schaefer and Roger Edwards NOAA/NWS Storm Prediction Center Norman, OK 1. Introduction Dr. T. Theodore Fujita developed the F- Scale, or Fujita Scale, in 1971 to provide a way to compare mesoscale windstorms by estimating the wind speed in hurricanes or tornadoes through an evaluation of the observed damage (Fujita 1971). Fujita grouped wind damage into six categories of increasing devastation (F0 through F5). Then for each damage class, he estimated the wind speed range capable of causing the damage. When deriving the scale, Fujita cunningly bridged the speeds between the Beaufort Scale (Huler 2005) used to estimate wind speeds through hurricane intensity and the Mach scale for near sonic speed winds. Fujita developed the following equation to estimate the wind speed associated with the damage produced by a tornado: Figure 1: Fujita's plot of how the F-Scale V = 14.1(F+2)3/2 connects with the Beaufort Scale and Mach number. From Fujita’s SMRP No. 91, 1971. where V is the speed in miles per hour, and F is the F-category of the damage. This Amazingly, the University of Oklahoma equation led to the graph devised by Fujita Doppler-On-Wheels measured up to 318 in Figure 1. mph flow some tens of meters above the ground in this tornado (Burgess et. al, 2002). Fujita and his staff used this scale to map out and analyze 148 tornadoes in the Super 2. Early Applications Tornado Outbreak of 3-4 April 1974. -
George C. Mdrrhall Space Flight Center Marshall Space F/@T Center, Alabdrnd
NASA TECHNICAL MEMORANDUM (NASA-TU-78262) A PRELI8INABY LOOK AT N80- 18636 AVE-SESAHE 1 CONDUCTED 0U 10-11 APRIL 1979 (8lASA) 52 p HC AO4/HP A01 CSCL 040 Unclas G3/47 47335 A PRELIMINARY LOOK AT AVE-SESAME I CONDUCTED ON APRIL 10-1 1, 1979 By Steven F. Williams, James R. Scoggins, Nicholas Horvath, and Kelly Hill February 1980 NASA George C. Mdrrhall Space Flight Center Marshall Space F/@t Center, Alabdrnd MBFC - Form 3190 (Rev June 1971) ,. .. .. .. , . YAFrl," I?? CONTENTS Page LIST OF FIGURES ........................... iv LIST OF TABLES ............................ vii 1. OBJECTIVES AND SCOPE ...................... 1 2. DATA COLLECTGD ......................... 1 a. Rawinsonde Soundinps.... .................... 1 b. Surface a* Upper -Air -..+ .................... 4 3. SMOPTIC CONDITIONS ....................... 4 a. Synoptic Charts ....................... 4 b. Radar.. .......................... 5 c. Satellite.. ........................ 5 4. SEVERE AND UNUSUAL WkXPIk h. REPORTED ............... 37 PRriCICDINQ PAGE BUNK NOT FKMED iii - .%; . ,,. r* , . * *. '' ,..'~ LIST OE' FIGURES Figure Page Location of rawinsonde stations participating in the AVE-SESAME I experiment ................. 3 Synoptic charts for 1200 GMT. 10 April 1979 ....... 6 Surface chart for 1800 GMT. 10 April 1979 ........ 9 Synoptic charts for 0000 GMT. 11 April 1979 ....... 10 Surface chart for 0600 GMT. 11 April 1979 ........ 13 Synoptic charts for 1200 GMT. 11 April 1979 ....... 14 Radar sunmxy for 1435 GMT. 10 April 1979 ........ 17 Radar summary for 1935 GMT. 10 ~pril1979 ........ 17 Radar summary for 2235 GMT. 10 April1979 ........ 18 Radar sumnary for 0135 GMT. 11 ~pril1979 ........ 18 Radar summary for 0235 GMT. 11 ~pril1979 ........ 19 Radar sununary for 0435 GMT. 11 April 1979 ........ 19 Radar summary for 0535 GMT. 11 April 1979 ....... -
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. -
Tornadoes & Downburst
TORNADOES & DOWNBURST TORNADOES • A devastating F5 tornado about 200 meters wide plows through Hesston, Kansas, on March 13, 1990, leaving almost 300 people homeless and 13 injured. • Total destruction caused by an F5 tornado that devastated parts of Oklahoma on May 3, 1999. • A tornado is a violently rotating (usually counterclockwise in the northern hemisphere) column of air descending from a thunderstorm and in contact with the ground. Although tornadoes are usually brief, lasting only a few minutes, they can sometimes last for more than an hour and travel several miles causing considerable damage. In a typical year about 1000 tornadoes will strike the United States. The peak of the tornado season is April through June and more tornadoes strike the central United States than any other place in the world. This area has been nicknamed "tornado alley." Most tornadoes are spawned from supercell thunderstorms. Supercell thunderstorms are characterized by a persistent rotating updraft and form in environments of strong vertical wind shear. Wind shear is the change in wind speed and/or direction with height. • Tornadoes are natures most destructive weather hazard. Annual Number of Tornadoes per State (upper number) • Tornado incidence by state. The upper figure shows the number of tornadoes reported by each state during a 25-year period. The lower figure is the average annual number of tornadoes per 10,000 square miles. The darker the shading, the greater the frequency of tornadoes. • Average number of tornadoes during each month in the United States. Fujita Scale F0-F1 Fujita scale is a measure of tornado intensity Winds 60 - 115 mph quantified through a subjective analysis of relating tornadic damage to wind speed. -
1 International Approaches to Tornado Damage and Intensity Classification International Association of Wind Engineers
International Approaches to Tornado Damage and Intensity Classification International Association of Wind Engineers (IAWE), International Tornado Working Group 2017 June 6, DRAFT FINAL REPORT 1. Introduction Tornadoes are one of the most destructive natural Hazards on Earth, with occurrences Having been observed on every continent except Antarctica. It is difficult to determine worldwide occurrences, or even the fatalities or losses due to tornadoes, because of a lack of systematic observations and widely varying approacHes. In many jurisdictions, there is not any tracking of losses from severe storms, let alone the details pertaining to tornado intensity. Table 1 provides a summary estimate of tornado occurrence by continent, with details, wHere they are available, for countries or regions Having more than a few observations per year. Because of the lack of systematic identification of tornadoes, the entries in the Table are a mix of verified tornadoes, reports of tornadoes and climatological estimates. Nevertheless, on average, there appear to be more than 1800 tornadoes per year, worldwide, with about 70% of these occurring in North America. It is estimated that Europe is the second most active continent, with more than 240 per year, and Asia third, with more than 130 tornadoes per year on average. Since these numbers are based on observations, there could be a significant number of un-reported tornadoes in regions with low population density (CHeng et al., 2013), not to mention the lack of systematic analysis and reporting, or the complexity of identifying tornadoes that may occur in tropical cyclones. Table 1 also provides information on the approximate annual fatalities, althougH these data are unavailable in many jurisdictions and could be unreliable. -
Heat Waves in Southern California: Are They Becoming More Frequent and Longer Lasting?
Heat Waves in Southern California: Are They Becoming More Frequent and Longer Lasting? A!"# T$%!$&#$' University of California, Berkeley S()*) L$D+,-. California State University, Los Angeles J+/- W#00#/ $'1 W#00#$% C. P$(&)!( Jet Propulsion Laboratory, NASA ABSTRACT Los Angeles is experiencing more heat waves and also more extreme heat days. 2ese numbers have increased by over 3 heat waves per century and nearly 23 days per century occurrences, respectively. Both have more than tripled over the past 100 years as a consequence of the steady warming of Los Angeles. Our research explores the daily maximum and minimum temper- atures from 1906 to 2006 recorded by the Department of Water and Power (DWP) downtown station and Pierce College, a suburban valley location. 2e average annual maximum temperature in Los Angeles has warmed by 5.0°F (2.8°C), while the average annual minimum temperature has warmed by 4.2°F (2.3°C). 2e greatest rate of change was during the summer months for both maximum and minimum temperature, with late fall and early winter having the least rates of change. 2ere was also an increase in heat wave duration. Heat waves lasting longer than six days occurred regularly a3er the 1970s but were nonexistent from the start of 1906 until 1956, when the 4rst six-day heat wave was recorded. While heat days have increased dramatically in the past century, cold days, where minimum temperature is below 45°F (7.2°C), show a slight decreasing trend. Recent deadly heat waves in the western United States have generated increasing electricity demands. -
Film Soleil 28/9/05 3:35 Pm Page 2 Film Soleil 28/9/05 3:35 Pm Page 3
Film Soleil 28/9/05 3:35 pm Page 2 Film Soleil 28/9/05 3:35 pm Page 3 Film Soleil D.K. Holm www.pocketessentials.com This edition published in Great Britain 2005 by Pocket Essentials P.O.Box 394, Harpenden, Herts, AL5 1XJ, UK Distributed in the USA by Trafalgar Square Publishing P.O.Box 257, Howe Hill Road, North Pomfret, Vermont 05053 © D.K.Holm 2005 The right of D.K.Holm to be identified as the author of this work has been asserted by him in accordance with the Copyright, Designs and Patents Act 1988. All rights reserved. No part of this book may be reproduced, stored in or introduced into a retrieval system, or transmitted, in any form, or by any means (electronic, mechanical, photocopying, recording or otherwise) without the written permission of the publisher. Any person who does any unauthorised act in relation to this publication may beliable to criminal prosecution and civil claims for damages. The book is sold subject tothe condition that it shall not, by way of trade or otherwise, be lent, re-sold, hired out or otherwise circulated, without the publisher’s prior consent, in anyform, binding or cover other than in which it is published, and without similar condi-tions, including this condition being imposed on the subsequent publication. A CIP catalogue record for this book is available from the British Library. ISBN 1–904048–50–1 2 4 6 8 10 9 7 5 3 1 Book typeset by Avocet Typeset, Chilton, Aylesbury, Bucks Printed and bound by Cox & Wyman, Reading, Berkshire Film Soleil 28/9/05 3:35 pm Page 5 Acknowledgements There is nothing