DOCSLIB.ORG

FLOODPLAIN MANAGEMENT PLAN Sarasota County | June 2018 SARASOTA COUNTY FLOODPLAIN MANAGEMENT PLAN

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
FLOODPLAIN MANAGEMENT PLAN Sarasota County | June 2018 SARASOTA COUNTY FLOODPLAIN MANAGEMENT PLAN SARASOTA COUNTY FLOODPLAIN MANAGEMENT PLAN Sarasota County | June 2018 SARASOTA COUNTY FLOODPLAIN MANAGEMENT PLAN Prepared for: Sarasota County 1001 Sarasota Center Blvd. Sarasota, Florida 34240 Prepared by: Jones Edmunds & Associates, Inc. 730 NE Waldo Road Gainesville, Florida 32641 Certificate of Engineering Authorization #1841 Jones Edmunds Project No.: 19006-049-01 June 2018 REVISIONS Date Revision June 2018 Revisions TABLE OF CONTENTS 1 INTRODUCTION .................................................................................................................................. 1-1 Purpose .................................................................................................................................................. 1-1 Community Profile .................................................................................................................................. 1-3 Geographic Profile ............................................................................................................................. 1-3 Topography ........................................................................................................................................ 1-3 Climate ........................................................................................................................................... 1-3 Population and Demographics ........................................................................................................... 1-3 Housing ........................................................................................................................................... 1-4 Economy ........................................................................................................................................... 1-4 National Flood Insurance Program ........................................................................................................ 1-5 Community Rating System ..................................................................................................................... 1-5 2 PLAN ORGANIZATION AND DEVELOPMENT .................................................................................. 2-1 Planning Committee ............................................................................................................................... 2-1 Public Involvement ................................................................................................................................. 2-2 Public Meetings .................................................................................................................................. 2-3 Additional Public Information Activities .............................................................................................. 2-3 Coordination ........................................................................................................................................... 2-6 Review of Existing Studies and Information ....................................................................................... 2-6 Coordination with Other Agencies and Organizations ....................................................................... 2-9 3 ASSESSMENT OF FLOOD HAZARDS ............................................................................................... 3-1 Coastal Flooding .................................................................................................................................... 3-1 Inland Flooding ....................................................................................................................................... 3-4 Tropical Storm / Hurricane ................................................................................................................... 3-11 Historical Claims and Repetitive Loss Areas ....................................................................................... 3-15 4 LESS FREQUENT FLOOD HAZARDS AND OTHER TYPES OF HAZARDS ................................... 4-1 Dam Failure ............................................................................................................................................ 4-1 Levee Failure ......................................................................................................................................... 4-1 Coastal Erosion ...................................................................................................................................... 4-4 Other Hazards ........................................................................................................................................ 4-5 Hail Storm ........................................................................................................................................... 4-5 Lightning ........................................................................................................................................... 4-6 Freeze ........................................................................................................................................... 4-6 Tornado ........................................................................................................................................... 4-6 Land subsidence / sinkholes .............................................................................................................. 4-6 i June 2018 Table of Contents Wildfires ........................................................................................................................................... 4-7 5 FUTURE FLOODING ........................................................................................................................... 5-1 Climate Change and Sea Level Rise ..................................................................................................... 5-1 Future Development in the Watershed .................................................................................................. 5-3 Future Conditions Model ........................................................................................................................ 5-6 6 ASSESSMENT OF IMPACTS DUE TO HAZARDS ............................................................................ 6-1 Life Safety .............................................................................................................................................. 6-1 Public Health .......................................................................................................................................... 6-4 Critical Facilities and Infrastructure ........................................................................................................ 6-5 Economy and Major Employers ............................................................................................................. 6-7 Residential and Commercial Buildings .................................................................................................. 6-7 7 NATURAL FLOODPLAIN FUNCTIONS .............................................................................................. 7-1 Beneficial Resources and Functions of Natural Floodplains ................................................................. 7-1 Natural Flood Storage and Erosion Control ....................................................................................... 7-1 Water Quality and Aquifer Recharge ................................................................................................. 7-1 Fish and Wildlife Habitat .................................................................................................................... 7-1 Recreation .......................................................................................................................................... 7-2 Economic Benefit ............................................................................................................................... 7-2 Protecting Our Natural Floodplains ........................................................................................................ 7-2 8 FLOODPLAIN MANAGEMENT PLAN GOALS AND ACTIVITIES ..................................................... 8-1 Goals ................................................................................................................................................... 8-1 Review of Possible Floodplain Management Activities .......................................................................... 8-1 Integration with Sarasota County Post-Disaster Redevelopment Plan ............................................... 8-20 Integration with Sarasota County Local Mitigation Strategy ................................................................ 8-20 9 FLOODPLAIN MANAGEMENT ACTION PLAN .................................................................................. 9-1 Coordination with Other County Initiatives ............................................................................................. 9-1 10 PLAN ADOPTION, IMPLEMENTATION, EVALUATION AND REVISION ....................................... 10-1 11 REFERENCES ................................................................................................................................... 11-1 LIST OF TABLES Table 2-1 Floodplain Management Plan Committee Members ........................................................ 2-1 Table 2-2 FMP Committee Meetings ............................................................................................... 2-2
Load more

Recommended publications
  • Federal Communications Commission Before the Federal
    Federal Communications Commission Before the Federal Communications Commission Washington, D.C. 20554 In the Matter of ) ) Existing Shareholders of Clear Channel ) BTCCT-20061212AVR Communications, Inc. ) BTCH-20061212CCF, et al. (Transferors) ) BTCH-20061212BYE, et al. and ) BTCH-20061212BZT, et al. Shareholders of Thomas H. Lee ) BTC-20061212BXW, et al. Equity Fund VI, L.P., ) BTCTVL-20061212CDD Bain Capital (CC) IX, L.P., ) BTCH-20061212AET, et al. and BT Triple Crown Capital ) BTC-20061212BNM, et al. Holdings III, Inc. ) BTCH-20061212CDE, et al. (Transferees) ) BTCCT-20061212CEI, et al. ) BTCCT-20061212CEO For Consent to Transfers of Control of ) BTCH-20061212AVS, et al. ) BTCCT-20061212BFW, et al. Ackerley Broadcasting – Fresno, LLC ) BTC-20061212CEP, et al. Ackerley Broadcasting Operations, LLC; ) BTCH-20061212CFF, et al. AMFM Broadcasting Licenses, LLC; ) BTCH-20070619AKF AMFM Radio Licenses, LLC; ) AMFM Texas Licenses Limited Partnership; ) Bel Meade Broadcasting Company, Inc. ) Capstar TX Limited Partnership; ) CC Licenses, LLC; CCB Texas Licenses, L.P.; ) Central NY News, Inc.; Citicasters Co.; ) Citicasters Licenses, L.P.; Clear Channel ) Broadcasting Licenses, Inc.; ) Jacor Broadcasting Corporation; and Jacor ) Broadcasting of Colorado, Inc. ) ) and ) ) Existing Shareholders of Clear Channel ) BAL-20070619ABU, et al. Communications, Inc. (Assignors) ) BALH-20070619AKA, et al. and ) BALH-20070619AEY, et al. Aloha Station Trust, LLC, as Trustee ) BAL-20070619AHH, et al. (Assignee) ) BALH-20070619ACB, et al. ) BALH-20070619AIT, et al. For Consent to Assignment of Licenses of ) BALH-20070627ACN ) BALH-20070627ACO, et al. Jacor Broadcasting Corporation; ) BAL-20070906ADP CC Licenses, LLC; AMFM Radio ) BALH-20070906ADQ Licenses, LLC; Citicasters Licenses, LP; ) Capstar TX Limited Partnership; and ) Clear Channel Broadcasting Licenses, Inc. ) Federal Communications Commission ERRATUM Released: January 30, 2008 By the Media Bureau: On January 24, 2008, the Commission released a Memorandum Opinion and Order(MO&O),FCC 08-3, in the above-captioned proceeding.
    [Show full text]
  • Sarasota-2020-Evacuation-Map.Pdf
    U iversi n ty Pkwy Exit 213 MANATEE COUNTY U G . u S l . f 4 o 1 ¨¦§I-75 f M )" e 1 x 0 i c 3 o . S D Fruitville Rd Verna Rd r . Exit 210 U )" Ringling Cswy )" )" Bee Ridge Exit 207 Rd Lorraine Rd )")" Beneva Road Exit 205 M Clark Rd id )" n ig h t P U MANATEE COUNTY a . s S s . 4 R 1 d State Road 72 Exit 200 C a s e S.R. 681 y §I-75 K ¨¦ e EVACUATION LEVELS & CENTERS Sarasota Countyy R Laurel Roa o d Exit 195 a d University Pkwy 3 MANATEE COUNTY Exit 21Exit 193 Exit 191 COUNTYDESOTO U G Venice Avenue N . Exit 182 Exit 179 u S R iv l . 4 e f r o 1 I-75 Center Road R )" ¨¦§ o f )"9 a )" M d )" e 1 )" x 0 i Jacaranda Blvd U.S.41 ¨¦§I-75 c 3 Sumter Blvd o . E n S D g Fruitville Rd Verna Rd . Exit l210 Toledo Blade Blvd r e U w o )"1 o d R d CHARLOTTE COUNTY Ringling M a Cswy o o a a µ n d R a ( r s S e 0 2.5 5 10 Miles 6 o R iv )" t a 7 R 7 S K 6 )"5 Bee Ridge Exite 207 ) y Hurricane Watch: Lorraine Rd R )" AnShelters announcement that hurricane conditions Rd o a (sustained winds of 74 mph or higher) are possible d St )"22 Pine withinEvacuation the specified Routes area.
    [Show full text]
  • Meadoword July 2020 the Meadows Community News and Lifestyle Volume 38, Number 6
    T HE M E ADOWORD THE MEADOWORD July 2020 The Meadows Community News and Lifestyle Volume 38, Number 6 MANASOTA, FL MANASOTA, U.S. POSTAGE PRESORTED STANDARD PERMIT 61 PAID SummerSummer FunFun SummerSummer SafetySafety COMMUNITY OUR FEATURED ARTICLE & WRITE BUSINESS NEWS LIFESTYLE VIRTUAL EVENT STUFF DIRECTORY Page 2–9 Page 10–22 Page 11 Page 23–25 Page 26–27 2 THE MEADOWORD July 2020 July 2020 THE MEADOWORD 3 Working Toward a Better Present SPLASH INTO SUMMER and Brighter Future with the Renaissance Access Plan Frances Rippcondi—MCA General Manager Jan Lazar—MCA Board President he past three months have the Renaissance Plan and building and fitness center, he Renaissance Access Plan for those who just want to cool satisfying once positive results if you are tired of eating the same Tbeen some of the most difficult implementation of the strategic improvements to tennis facilities Toffers The Meadows residents off. Water aerobics classes are have been achieved. So, go for old thing, step out to the Centre in our history. Our hearts and initiatives developed to refresh and around the pool and Centre the perfect opportunity get-away also available on Tuesdays and it and take the opportunity to Court Lounge where you can sympathies go out to those who and update the amenities our Court Lounge (CCL), significant from it all right in your own Thursdays from 8:30 am to9:20 strengthen your mind and body. enjoy outdoor dining on the deck. have lost friends and loved ones to community provides for us. renovations to golfing and dining backyard.
    [Show full text]
  • Floods Caused by Tropical Systems: Potomac River at Point of Rocks, MD
    Floods Caused by Tropical Systems: Potomac River at Point of Rocks, MD Latitude: 39.274 Period of Record: 1889-Present Longitude: -77.543 Flood Stage: 16 Last Flood: 12/17/2018 Number of Floods: 121 Date of Flood Crest (ft) Streamflow (cfs) Weather Summary 9/1/1911 16.1 106,000 The first tropical cyclone of the 1911 season moved eastward across North Carolina and Virginia. 10/17/1954 21.02 130,000 Hurricane Hazel dumped 6- 10 inches of rain in the western portion of Virginia. 9/20/1945 21.98 139,000 The 1945 Southeast Florida Hurricane brought gusty winds and heavy rains to the Mid-Atlantic region. 8/20/1955 29.08 214,000 Hurricane Diane made landfall 5 days after Hurricane Connie. Hurricane Diane produced several inches of rain with locally heavier amounts of 10 to 20 inches. 9/26/1975 24.35 126,000 The remnants of Hurricane Eloise combined with a cold front and produced very heavy rainfall in the Mid- Atlantic. Washington, D.C. reported 9.08" of rainfall. Total damage for Virginia was estimated to be $17.2 million. 6/23/1972 37.43 347,000 Hurricane Agnes made landfall again over southeastern New York on June 22 and moved westward into Pennsylvania. Rainfall totals from June 20-25 range from 2-3 inches in the Upper Potomac to 18 inches near Shamokin, Pennsylvania. 10/1/1896 27.2 204,000 A hurricane knocked out communication in Richmond. Several buildings were unroofed in Petersburg. In Buena Vista, the fire department rescued people from their homes.
    [Show full text]
  • FEMA FOIA Log – 2018
    Mirandra Abrams, Monique any and all records concerning clients. Kindly provide our office with 10/4/2017 Sambursky a complete copy of clients entire file as it pertains as it pertains to Slone Sklarin Inquiry Number (b) (6) ; Voucher Number (b) (6) ; Payee Verveniotis Reference Number (b) (6) in your possession. 2017-FEFO-02138 - Masters, Mark all contract documents related to temporary staffing services 10/5/2017 contracts for emergency call center support for FEMA in the last five 2017-FEFO-02177 (5) years 2017-FEFO-02187 - (b) (6) all files, correspondence, or other records concerning yourself 10/6/2017 Dallas News Benning, Tom 1) All active FEMA contracts for manufactured housing units. 2) All 10/13/2017 active FEMA individual assistance/technical assistance contracts (IATACs). 3) All pre-event contracts for debris removal that are overseen by FEMA Region 6. 4) All pre-event contracts for housing assistance that are overseen by FEMA Region 6. 5) All noncompetitive disaster relief contracts approved by FEMA since August 14, 2017. 6) All non-local disaster relief contracts approved by FEMA since August 14, 2017, including the written justification 2017-FEFO-02214 for choosing a non-local vendor. FCI Keys, Clay a copy of any and all records related to [FEMA's] response to 10/23/2017 SEAGOVILLE hurricane Katrina, including all memoranda, communications and records of any kind and from any source from August 29, 2005 to 2012. (Date Range for Record Search: From 8/29/2005 To 2017-FEFO-02239 12/1/2012) - (b) (6) Any files related to yourself (Date Range for Record Search: From 10/24/2017 2017-FEFO-02240 1/1/2000 To 9/11/2017) - McClain, Don every individual who has requested assistance by FEMA from both 10/31/2017 Hurricane Irma and Harvey.
    [Show full text]
  • Manatee County
    SHELTER INFO - REFER TO MAP NO. SHELTER NAME ADDRESS EVACUATION LEVELS & SHELTERS BAYSHORE ELEMENTARY SCHOOL 6120 26TH STREET WEST, MANATEE COUNTY 18 BRADENTON SARASOTA COUNTY 19 BRADEN RIVER HIGH SCHOOL 6545 SR 70 EAST, BRADENTON 6215 RIVER CLUB BLVD., 13 BRADEN RIVER MIDDLE SCHOOL BRADENTON 7320 69TH STREET EAST, Hurricane Watch: An announcement that hurricane conditions 24 BUFFALO CREEK MIDDLE SCHOOL PALMETTO (sustained winds of 74 mph or higher) are possible within the specified area. The hurricane watch is typically issued 48 hours in 515 63RD AVE. EAST, advance of the anticipated onset of tropical-storm-force winds. 28 DAUGHTREY ELEMENTARY SCHOOL BRADENTON Hurricane Warning: An announcement that hurricane conditions 9515 STATE ROAD 64 EAST, (sustained winds of 74 mph or higher) are expected somewhere 2 FREEDOM ELEMENTARY SCHOOL within the specified area. The hurricane warning is typically issued BRADENTON 36 hours in advance of the anticipated onset of tropical-storm- force winds. 12125 44TH AVE. EAST, 25 GULLETT ELEMENTARY SCHOOL BRADENTON Tropical Storm Watch: An announcement that sustained winds of 39 to 73 mph are possible within the specified area within 48 hours 9501 STATE ROAD 64 EAST, in association with a tropical storm. 11 HAILE MIDDLE SCHOOL BRADENTON Tropical Storm Warning: An announcement that sustained winds 8610 115TH AVE. EAST, of 39 to 73 mph are expected somewhere within the specified area 3 HARVEY ELEMENTARY SCHOOL PARRISH within 36 hours in association with a tropical storm. 2121 26TH AVE. EAST, Flood Watch: An announcement that indicates current or 15 JOHNSON-WAKELAND SCHOOL OF IB ""3 developing conditions that are favorable for flooding.
    [Show full text]
  • 2001 SWFWMD Land Acquisition Plan
    Five-Year Land Acquisition Plan 2001 SWFWMD i Land Acquisition Five-Year Plan 2001 Southwest Florida Water Management District Five-Year Land Acquisition Plan 2001 If a disabled individual wishes to obtain the information contained in this document in another form, please contact Cheryl Hill at 1-800-423-1476, extension 4452; TDD ONLY 1-800-231-6103; FAX (352)754-68771 ii Table of Contents Table of Contents Introduction and History 111111111111111111111111111111111111111111111111111111111111111111111111111111111 1 Save Our Rivers 111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111 1 Preservation 2000 11111111111111111111111111111111111111111111111111111111111111111111111111111111111111 1 Florida Forever 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111 3 Selection and Evaluation Process 11111111111111111111111111111111111111111111111111111111111111111111 5 Less-Than-Fee Acquisitions 111111111111111111111111111111111111111111111111111111111111111111111111111 10 Partnerships 11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111 13 Surplus Lands111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111 16 Land Use/Management Activities111111111111111111111111111111111111111111111111111111111111111111 17 Management Planning 11111111111111111111111111111111111111111111111111111111111111111111111111111 17 Land Use Implementation 111111111111111111111111111111111111111111111111111111111111111111111111
    [Show full text]
  • 2021 Q1 Cash Sweepstakes Appendix a - Participating Stations
    2021 Q1 Cash Sweepstakes Appendix A - Participating Stations Station iHM Market Station Website Office Phone Mailing Address WHLO-AM Akron, OH 640whlo.iheart.com 330-492-4700 7755 Freedom Avenue, North Canton OH 44720 WHOF-FM Akron, OH sunny1017.iheart.com 330-492-4700 7755 Freedom Avenue, North Canton OH 44720 WHOF-HD2 Akron, OH cantonsnewcountry.iheart.com 330-492-4700 7755 Freedom Avenue, North Canton OH 44720 WKDD-FM Akron, OH wkdd.iheart.com 330-492-4700 7755 Freedom Avenue, North Canton OH 44720 WRQK-FM Akron, OH wrqk.iheart.com 330-492-4700 7755 Freedom Avenue, North Canton OH 44720 WGY-AM Albany, NY wgy.iheart.com 518-452-4800 1203 Troy Schenectady Rd., Latham NY 12110 WGY-FM Albany, NY wgy.iheart.com 518-452-4800 1203 Troy Schenectady Rd., Latham NY 12110 WKKF-FM Albany, NY kiss1023.iheart.com 518-452-4800 1203 Troy Schenectady Rd., Latham NY 12110 WOFX-AM Albany, NY foxsports980.iheart.com 518-452-4800 1203 Troy Schenectady Rd., Latham NY 12110 WPYX-FM Albany, NY pyx106.iheart.com 518-452-4800 1203 Troy Schenectady Rd., Latham NY 12110 WRVE-FM Albany, NY 995theriver.iheart.com 518-452-4800 1203 Troy Schenectady Rd., Latham NY 12110 WRVE-HD2 Albany, NY wildcountry999.iheart.com 518-452-4800 1203 Troy Schenectady Rd., Latham NY 12110 WTRY-FM Albany, NY 983try.iheart.com 518-452-4800 1203 Troy Schenectady Rd., Latham NY 12110 KABQ-AM Albuquerque, NM abqtalk.iheart.com 505-830-6400 5411 Jefferson NE, Ste 100, Albuquerque, NM 87109 KABQ-FM Albuquerque, NM 1047kabq.iheart.com 505-830-6400 5411 Jefferson NE, Ste 100, Albuquerque, NM
    [Show full text]
  • Lessons Learned from Hurricane Sandy and Recommendations for Improved Healthcare and Public Health Response and Recovery for Future Catastrophic Events
    Lessons Learned from Hurricane Sandy and Recommendations for Improved Healthcare and Public Health Response and Recovery for Future Catastrophic Events Final Report December 22, 2015 Lessons Learned from Hurricane Sandy and Recommendations for Improved Healthcare and Public Health Response and Recovery for Future Catastrophic Events BACKGROUND A “classic late-season…extraordinarily large hurricane,” 1 Sandy was the 18th named tropical cyclone of the 2012 Atlantic hurricane season. It made landfall along the mid-Atlantic coast near Atlantic City, NJ about 6:30 pm on October 29, 2012 as a Category 1 hurricane with 80- mph maximum sustained winds. But due to its extensive breadth (winds above 40 mph (tropical storm force) stretched 900 miles), Sandy’s real damage was done by a calamitous storm surge that merged with a high tide to produce a storm surge, primarily pounding the New Jersey, New York, and Connecticut coastlines (Figure 1). The United States Geological Survey measured water levels on Staten Island, New York at almost eight feet above ground level. Even after the storm moved on, it impacted inland states, including Ohio, West Virginia, and Indiana, with high winds, soaking rains, and even heavy snow in the Appalachians. 2,3 Very High: > 10,000 people exposed to surge High: 500 – 10,000 people exposed to surge OR > $100 million in wind damage OR > 8” rain Moderate: 100 – 500 people exposed to surge OR $10 - $100 million in wind damage OR 4” - 8” rain Low: no surge impacts OR < $10 million in wind damage OR < 4” rain Figure 1. 2 FEMA Hurricane Sandy Impact Analysis The consequences of the storm’s destructive power were significant.
    [Show full text]
  • Fishing Pier Design Guidance Part 1
    Fishing Pier Design Guidance Part 1: Historical Pier Damage in Florida Ralph R. Clark Florida Department of Environmental Protection Bureau of Beaches and Coastal Systems May 2010 Table of Contents Foreword............................................................................................................................. i Table of Contents ............................................................................................................... ii Chapter 1 – Introduction................................................................................................... 1 Chapter 2 – Ocean and Gulf Pier Damages in Florida................................................... 4 Chapter 3 – Three Major Hurricanes of the Late 1970’s............................................... 6 September 23, 1975 – Hurricane Eloise ...................................................................... 6 September 3, 1979 – Hurricane David ........................................................................ 6 September 13, 1979 – Hurricane Frederic.................................................................. 7 Chapter 4 – Two Hurricanes and Four Storms of the 1980’s........................................ 8 June 18, 1982 – No Name Storm.................................................................................. 8 November 21-24, 1984 – Thanksgiving Storm............................................................ 8 August 30-September 1, 1985 – Hurricane Elena ...................................................... 9 October 31,
    [Show full text]
  • Florida Communities Trust Annual Report 2016-2017
    Florida Communities Trust Annual Report Fiscal Year 2016-2017 Office of Operations Land and Recreation Grants Section Florida Department of Environmental Protection September 30, 2017 3900 Commonwealth Boulevard, MS 103 Tallahassee, Florida 32399-3000 www.dep.state.fl.us Florida Communities Trust Annual Report Fiscal Year 2016-2017 1 Table of Contents LETTER FROM THE CHAIR ....................................................................................................... 1 PROJECT LOCATION MAP ........................................................................................................ 2 FLORIDA COMMUNITIES TRUST .............................................................................................. 3 MISSION AND ACCOMPLISHMENTS ......................................................................................... 4 PARK HAPPENINGS FOR FISCAL YEAR 2016-2017 ................................................................ 8 ACQUIRED PROJECTS BY COUNTY 1991-2017 .................................................................... 12 SUMMARY OF FINANCIAL ACTIVITIES ................................................................................... 29 FLORIDA COMMUNITIES TRUST BOARD MEMBERS ............................................................ 31 Front Cover Photo: Victory Pointe Park (f.k.a. West Lake Park) Unique Abilities 2017 Cycle FCT # 16-005-UA17, City of Clermont, FL Back Cover Photo: Myers-Stickel Property Unique Abilities 2017 Cycle FCT # 16-012-UA17, St. Lucie County, FL Florida Communities Trust
    [Show full text]
  • Tropical Topics Week 2021 NWS Florida &
    5/21/2021 Tornado Recognition, Impacts & Messaging Scott Spratt; NWS Melbourne | Robert Molleda; NWS Miami 1 TC Tornadoes Tornado Recognition, Impacts & Messaging 2 1 5/21/2021 TC Tornadoes Today’s Presentation Topics • Previous Events • Climatology/Favorable Patterns • Worse Case Scenario • Threat/Impact Messaging Hurricane Irma September 10, 2017 EF-1 Tornado 1124 am | Indialantic, FL • Future Improvements 3 TC Tornadoes What is the relative threat? Which tropical cyclone hazard poses the greatest threat? A. Wind B. Storm Surge Flooding C. Heavy Rainfall Flooding D. Tornadoes E. It depends – on the particular storm/hurricane; and on where you are located 4 2 5/21/2021 The TC Tornado Hazard can be Significant A Specific Example – Tropical Storm Gordon (1994) T Barefoot Bay, FL November 16, 1994 Nearly 500 MH damaged Including 62 destroyed Tropical storm center at 1 Fatality; 40 injuries time of tornado T Tornado location 5 TC Tornadoes Threat Recognition, Impacts & Messaging The primary Tropical Cyclone (TC) tornado challenges are. 1) Predicting tornadoes outside the area where people are prepared for hurricane force winds; or prior to the damaging hurricane wind onset. 2) Predicting tornadoes from weaker systems where tornadoes may pose the greatest threat. 3) Minimizing the amount of over-warning. 4) Successfully Messaging #1-3 6 3 5/21/2021 TC Tornadoes Addressing the primary challenges • Threat Assessment • Impact Recognition • Effective Messaging 7 TC Tornado Development Diagnosing the local tornado hazard • Certain weather factors enhance the tornado potential of landfalling or paralleling systems: ✓ Strong low-level wind shear (maximized in right-front quadrant). ✓ Pockets of dry air (enhance instability; isolated cells).
    [Show full text]