High Winds & Tornadoes March 3, 2010

Transcription

1 Town of High Winds & Tornadoes March 3, 2010 Plan Update

2 Flanagan & Associates, LLC Consultants Tulsa, OK Plan can be reviewed at:

3 Overview of Process Step 1: Step 2: Step 3: Organize to Prepare the Plan Involve the Public Coordinate with Other Agencies and Organizations Step 4: Assess the Step 5: Assess the Problem (i.e., Specific Vulnerabilities) Step 6: Set Goals (i.e., Priorities Based Upon Assessments) Step 7: Review Possible Activities (i.e., Measures) Step 8: Step 9: Draft the Action Plan Adopt the Plan Step 10: Monitor, Evaluate, and Update Chapter 7

4 Chapter 3: Committee Members

5 Chapter 3: Committee Members

6 Chapter 3: Committee Members

7 High Winds

8 High Winds FLASH Openings From FLASH - The Federal Alliance for Safe Homes All FLASH videos available at

9 High Winds Derecho: : an intense, fast-moving storm with sustained straight line winds

10 High Winds Tulsa OK Micro-burst, June 6, 06

11 How High Winds Affect Buildings

12 High Wind Events, 4 High Wind events since 1989 Average reported wind speed of 65 miles per hour $5,506,000 in reported structure damages according to NCDC data

13 Who are the vulnerable populations in the area?

14 Vulnerable Populations and Resources Homeowners Property managers People who speak a language other than English, limiting their ability to receive warning messages Homes & buildings. In particular, older homes or glass-clad buildings

15 Mobile Home Parks

16 Goals & Objectives GOAL: To reduce injuries and loss of life; trauma; damage to property, equipment and infrastructure; community disruption; and economic, environmental and other losses caused by high winds.

17 Goals & Objectives 1. Public Information & Education. Improve public awareness of High Wind hazards, in general and in specific high-risk situations, and give people knowledge about measures by which people can protect themselves, their property and their community. 2. Preventive Measures. Prevent or reduce high-wind losses by strengthening buildings and by publicizing, training, and creating market options for fortified new construction, retrofits, code changes and code-plus innovations.

18 Goals & Objectives (cont.) 3. Structural Projects. Provide fortified buildings for critical public facilities and vulnerable populations, including children; offer training and incentive to encourage people of means to build stronger structures in new and retrofit building projects. 4. Property Protection. Identify and protect people, structures, and critical infrastructure that are vulnerable to high winds, with emphasis on critical facilities.

19 Goals & Objectives (cont.) 5. Emergency Services. Identify needs for & implement additional emergency operations plans and services to expand safety in dangerous windstorms, including Community Emergency Response Team (CERT) training. 6. Natural Resource Protection. Take advantage of opportunities for high-wind programs & policies that reduce negative environmental impacts. Examples include sustainable programs for debris mngmnt & recycling, & fortified construction with environmentally friendly materials.

20 Measures 2003 Plan & Potential Measures Combined with Tornadoes

21 Tornadoes

22 Tornadoes FLASH Straps From FLASH - The Federal Alliance for Safe Homes All FLASH videos available at

23 Tornadoes US Tornado Paths,

24 Tornadoes Greensburg, KS May 4, 2007

25 Tornadoes Significant (F2 or greater) Tornado Days per Century ( )

26 Tornadoes US Tornado Deaths per Million People

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29 Tornadoes Moore Tornado May 3, 1999

30 Tornadoes ITEMS BUILDING COST: Percentage Breakdown Typical Single-Family Residence % of COST Foundation 6.90 Superstructure Roofing 4.40 Insulation 3.50 Exterior Finish 6.90 Interior Finish 9.80 Doors-Windows 4.60 Lumber, Finished 4.60 Hardware 1.30 Cabinets, Countertops 5.80 Floor Covering 5.00 Plumbing 9.00 Electrical 6.20 Built-in in Appliances 2.80 HVAC 4.70 Painting 3.80 Totals 100% Source: FEMA Residential Substantial Damage Estimator

31 Tornadoes FUJITA SCALE: F-0 GALE (40-72 mph) Enhanced: (65-85 mph) Damage to chimneys, tree branches, shallow root trees ITEMS % DAMAGE Foundation 0 Superstructure.75 Roofing 1 Insulation.50 Exterior Finish 1 Interior Finish 0 Doors-Windows 1 Lumber, Finished 0 Hardware 0 Cabinets, Countertops 0 Floor Covering 0 Plumbing 0 Electrical.5 Built-in Appliances 0 HVAC 0 Painting.25 Totals 5%

32 Tornadoes FUJITA SCALE: F-1 MODERATE ( mph) Enhanced: ( mph) Lower limit of Tornado wind speed surfaces peeled off roofs, mobile homes pushed off foundations/overturned, cars pushed off roads. ITEMS % DAMAGE Foundation 0 Superstructure 1.25 Roofing 2.25 Insulation.75 Exterior Finish 2 Interior Finish 0 Doors-Windows 1.50 Lumber, Finished 0 Hardware 0 Cabinets, Countertops 0 Floor Covering 0 Plumbing 0 Electrical.75 Built-in Appliances 0 HVAC.50 Painting.75 Totals 10%

33 FUJITA SCALE: F-2 SIGNIFICANT ( mph) Enhanced: ( ) Roofs torn off frame houses, mobile homes demolished, large trees snapped or uprooted, light-object missiles generated ITEMS % DAMAGE Foundation 0 Superstructure 10.3 Roofing 4.40 Insulation 1.75 Exterior Finish 4.00 Interior Finish 1.90 Doors-Windows 4.60 Lumber, Finished 2.00 Hardware.30 Cabinets, Countertops.50 Floor Covering 1.25 Plumbing.45 Electrical 3.10 Built-in Appliances 0 HVAC 3.50 Painting 1.90 Totals 40% Tornadoes

34 FUJITA SCALE: F-3 SEVERE ( mph) Enhanced: ( mph) Roofs and some walls torn off well constructed houses, most trees uprooted, cars lifted off ground and thrown ITEMS % DAMAGE Foundation 3.10 Superstructure Roofing 4.40 Insulation 2.00 Exterior Finish 5.75 Interior Finish 6.25 Doors-Windows 4.50 Lumber, Finished 4.25 Hardware 1.00 Cabinets, Countertops 4.25 Floor Covering 4.75 Plumbing 7.25 Electrical 5.75 Built-in Appliances 2.25 HVAC 4.50 Painting 3.50 Totals 80% Tornadoes

35 Tornadoes FUJITA SCALE: F-4 DEVASTATING ( mph) Enhanced: ( ) mph) Well-constructed houses leveled, structures with weak foundations blown some distance, cars thrown, and large missiles generated. ITEMS % DAMAGE Foundation 6.90 Superstructure Roofing 4.40 Insulation 3.50 Exterior Finish 6.90 Interior Finish 9.80 Doors-Windows 4.60 Lumber, Finished 4.60 Hardware 1.30 Cabinets, Countertops 5.80 Floor Covering 5.00 Plumbing 9.00 Electrical 6.20 Built-in Appliances 2.80 HVAC 4.70 Painting 3.80 Totals 100%

36 Tornadoes FUJITA SCALE: F-5 INCREDIBLE ( mph) Enhanced: (>200 mph) Strong frame houses lifted off foundations & carried considerable distances to disintegrate, auto-sized missiles fly through air in excess of 100 yds, trees debarked. ITEMS % DAMAGE Foundation 6.90 Superstructure Roofing 4.40 Insulation 3.50 Exterior Finish 6.90 Interior Finish 9.80 Doors-Windows 4.60 Lumber, Finished 4.60 Hardware 1.30 Cabinets, Countertops 5.80 Floor Covering 5.00 Plumbing 9.00 Electrical 6.20 Built-in Appliances 2.80 HVAC 4.70 Painting 3.80 Totals 100%

37 Historic Tornadoes

38 Worst-Case Scenario Using May 3 rd, 1999 Tornado Path

39 Town of Damage Scenario (in Millions of $) F- Value Factor Structure Damage Content Value Content Dmg Total Dmg 1 $3.0 10% $.302 $1.5 $ $3.1 40% $1.2 $1.5 $.311 $.377 $1.5 3 $ % $8.9 $5.5 4 $ % $5.2 $2.6 $2.2 $2.6 $11.1 $7.8 5 $ % $5.1 $2.7 $2.5 $7.7 $27.7 $20.9 $13.8 $7.8 $28.7

40 School District Tornado issues

41 "The whole building just collapsed on everybody," said a student at the school. "A bunch of people were trapped under cinder blocks Enterprise AL, 2007

42 Greenwood, Ks High School

43 Before & After Designated corridors for tornado drills in the Wichita KS Public School District. (May 3, 1999)

44 You can't teach in an unsafe, potentially dangerous situation. If you aren't taking steps for mitigating you are morally and legally at fault.. If you're not prepared to expect the unexpected, you're rolling the dice. Peter Anderson, Los Angeles Unified School District

45 Newcastle OK School SafeRoom

46 School SafeRooms Average budget increase for a new school designed to serve approx. 600 students % For new school additions, an additional $40/sq. ft. FEMA Case Study

47 Beggs OK School SafeRoom & Event Center

48 Maple Public Schools Safe Room

49 Impact Resistant Window Systems During a storm or other disaster, flying glass is a significant hazard that accounts for most injuries. The risks become even greater in some new buildings, which often are designed with increased glazing to capture daylighting benefits. American School & University magazine

50 Impact Resistant Window Systems High-wind & tornado protection Burglary & vandalism protection Noise reduction Sun protection Energy savings

51 How wonderful it is for students, staff, and parents to have a place for students to go while at school so they will feel safe and secure during tornado activity Julie Hedrick Wichita KS Public School District

52 Who are the vulnerable populations in the area?

53 Vulnerable Populations and Resources Homeowners Property managers Travelers and visitors People who speak a language other than English, limiting their ability to receive warning messages Homes & buildings. In particular, older homes or glass-clad buildings

54 Goals & Objectives GOAL: To reduce injuries and loss of life, trauma, damage to property, equipment and infrastructure, community disruption, and economic, environmental and other losses caused by tornadoes.

55 Goals & Objectives 1. Public Information & Education. Improve public awareness of tornado hazards in general and in specific high-risk situations, and give people knowledge about measures they can use to protect themselves, their property and their community. 2. Preventive Measures. Prevent or reduce tornado losses by strengthening buildings and by publicizing, training, and creating market options for fortified new construction, retrofits, code changes, and code-plus innovations.

56 Goals & Objectives (cont.) 3. Structural Projects. Identify costs and benefits of loss-prevention programs, such as covered vehicle parking, with consideration for uncalculated benefits such as averting response delays and business losses. 4. Property Protection. Identify, fund, and implement projects to protect people and public and private property from losses in hail events, including critical infrastructure such as utilities or public vehicles.

57 Goals & Objectives (cont.) 5. Emergency Services. Identify the needs for and implement additional emergency operations plans and services to expand tornado safety, including Community Emergency Response Team (CERT) training. 6. Natural Resource Protection. Take advantage of opportunities for tornado programs and policies that reduce negative environmental impacts. Examples include sustainable programs for debris management and recycling, and fortified construction with environmentally friendly materials.

58 Measures 2003 Plan Where do we stand on them? Investigate adopting building codes / incentives leading to construction that is more resistant to tornadoes and high winds. When replaced, install break-resistant resistant glass systems in government offices and critical facilities. Install SafeRooms in schools.

59 Measures 2003 Plan Where do we stand on them? Educate the public about construction methods designed for overall structural resistance to tornadoes and high winds. Install SafeRooms in fire and police stations to protect first responders. Consider painting street names and house numbers on curbs for identifying addresses when landmarks are absent.

60 Potential mitigation measures Which 2003 measures do we keep? What are some additional measures we may adopt in 2010?

61 Tornado/High Wind Measures (Examples) Public Information & Education Preventive Measures Educate residents on the National Storm Shelter Association (NSSA) certification seal for storm shelters that meet the Association s s standards. Incorporate into zoning and regulatory measures adopted by the community?

62 Tornado/High Wind Measures (Examples) Structural Projects Support the installation of SafeRooms at child- care centers.

63 Tornado/High Wind Measures (Examples) Preventive Measures Adopt ordinances requiring additional Fortified building guidelines for residential structures.

64 Fortified Home Institute for Business & Home Safety (IBHS) Structural Load Paths

65 Fortified Home Institute for Business & Home Safety (IBHS) Connection To Foundation, Slab On Grade Anchor Bolts

66 Fortified Home Institute for Business & Home Safety (IBHS) Wall To Foundation

67 Fortified Home Institute for Business & Home Safety (IBHS)

68 Fortified Home Institute for Business & Home Safety (IBHS) Connectors for roof system

69 Wyandotte Nation Tribal Housing Fortified Homes Foundation Bolts & Rafter Roof-to to-wall Straps

70 Fortified Home Institute for Business & Home Safety (IBHS) Reinforce Garage Doors This home suffered substantially less damage due to its double-wide garage doors remaining intact

71 Analysis Results: Extreme Risk: Greater than 6.0 Medium Risk: High Risk: 4.0 to 6.0 Low Risk: Less than 2.5 Instructions: Score each hazard based on a scale of 0 to 5 with 5 being highest. Historical Occurrence: Based on number of occurrence in last 20 yrs. Max is 5 ; if a new hazard use 0. Probability: Score 0 if non-existent, 1 if <1%, 2 if <5%, 3 if <10%, 4 if <20%, & 5 if 20%. Probability is likelihood an event will occur. History & probability are similar, but hazards that are newly developing, hazards where likelihood is greater or less based on new developments or activities, or hazards that have lack of historical information need to be considered individually. dually. Impact: Based on worst-case scenario - greatest possible impact should worst- case event occur. Impact is in terms of human casualties, property loss, infrastructure damage & business interruption/lost revenue issues. Secondary events need to be factored in where necessary. Assume maximum population when appropriate (for example, industrial park during peak work hours).

72 Vulnerability Analysis Type of Dam / Levee Occurrence History Prob Drought 3 3 Earthquake Expansive Soils 5 5 Hum. Impact Prop Infra Bus Resources Int. Ext. Total Flooding 2 2 Hail HazMat, Fixed Heat, Extreme 5 5 High Winds 5 5 Lightning Tornadoes 5 5 Transportation 4 4 Urban Fires 5 5 Wildfires Winter Storms 5 5 Mit n Activities

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74 Questions or Comments? Plan can be reviewed at: