1 / 18

THURSTON COUNTY RECOVERY TRAINING MODULE #1 – CASCADIA SUBDUCTION ZONE EARTHQUAKE SEQUENCE

THURSTON COUNTY RECOVERY TRAINING MODULE #1 – CASCADIA SUBDUCTION ZONE EARTHQUAKE SEQUENCE. EARTHQUAKE OCCURANCE. Nisqually Type – 3 to 4 Cascadia Type – 1 Estimated 200 to 500 yrs. Last – Jan. 26, 1700 Crustal Type - ?. Olympia. Eugene. EXERCISE FACTS AND ASSUMPTIONS

dinac
Download Presentation

THURSTON COUNTY RECOVERY TRAINING MODULE #1 – CASCADIA SUBDUCTION ZONE EARTHQUAKE SEQUENCE

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. THURSTON COUNTY RECOVERY TRAINING MODULE #1 – CASCADIA SUBDUCTION ZONE EARTHQUAKE SEQUENCE

  2. EARTHQUAKE OCCURANCE Nisqually Type – 3 to 4 Cascadia Type – 1 Estimated 200 to 500 yrs. Last – Jan. 26, 1700 Crustal Type - ?

  3. Olympia Eugene

  4. EXERCISE FACTS AND ASSUMPTIONS • Cascadia Subduction Zone Earthquake Magnitude 9.0 • Epicenter – 95 miles west of Eugene Oregon • Duration – 5 minutes 30 seconds • Monday January 28, 2019 at 9:10 AM • Average Temperature – Day 45.9 F Night 36.9 F • PPT Average – 0.32”/ 12 hours • Wind Speed – 6.3 mph • Civil Twilight 10:49 hours • Soil Conditions – Saturated • Tide at Budd Inlet – 16.30 feet • Tsunamis – 2 to 4 feet Bathtub Effect 4 feet from earthquake • Aftershocks – Could received 12 to 30 from magnitude 4.0 to 7.2 in first 30 days.

  5. Probability of Extensive Damage – Large diagonal cracks across shear-wall panels or large cracks at plywood joints; permanent lateral movement of floors and roofs; cracks in foundation; splitting od wood sill plates; slippage od structure over foundation

  6. Expected Building Damage by Use Building Use Total None/Slight Moderate Extensive Complete Single Family 77,741 75,409 2,56546 8 Other Residential 10,688 5,0234,061 1,496 136 Commercial 4,799 2,591 1,535 624 96 Agriculture 900 648 171 72 9 Government 347 196101 457 Industrial 219 116 72 337 Religion 185 11846 19 4 Education 116 65 2713 10 TOTAL 95,094 84,166 8,578 2,348 27711,203 Moderate Extensive Complete

  7. ROADS and RAILS Thurston County - 684 lane miles; 22 bridges/box culverts; 3 miles of rail; 3 rail bridges; 1 airport; 4 port facilities Regionally – 16,000 lane miles; 7,000 bridges 6,000 miles of rails;100 rail bridges; 100 airports; 700 port facilities.

  8. ELECTRICAL FACILITIES: 6 to 9 months for 90% Restoration • 3 Substations High Damage and 17 Substation have Medium Damage • Bonneville Power Administration (BPA) has approx. 200 transmission towers on slopes greater than 40%. 5 BPA transmission towers have collapsed. • 35% of powerlines are down, broken, or pulled from transformers and structures.

  9. PIPELINES: Natural Gas – 31 breaks/leaks in Northwest Pipeline; Yelm Compressor down 54 breaks and 206 leaks in PSE distribution lines Refined Fuels – 130 breaks/leaks on Olympia Pipeline Only 5% of fuel stations have generator power 7% of underground fuel tanks have leaks

  10. UTILITIES WATER: 160,000 individuals without water Centralia City Light power canal breached Dam failures – Lucinda Lake, Tempo Lake, Summit Lake & Clear Lake Water Systems – (Lacey, Olympia, Tumwater & Yelm) 1,050 leaks & 262 breaks Class A – 6 failed; Class B – 14 failed; Private wells - 1,300 to 1,820 failed SEWER: LOTT & Yelm are down; Estimated 5,400 septic's failed Estimated between LOTT and Yelm are 752 leaks and 188 breaks 5,400 private septic's have leaks or failed

  11. Bathtub Effect – 2 to 4 feet Time 0 Cascadia Earthquake – 4 feet about 5 hours Tsunamis LANDSLIDES 118 miles of Marine Coastal Shoreline 140 lakes > 5 acres 88,647 acres (18.88%) of slopes > 40% REMINDER: SEQUENCE - AFTERSHOCKS! Japan – March 11, 2011 M 9.0 Total to date; 5,332 M 5.5 to 7.2 to date 402

  12. Sheltering 1,000 households (4,500 individuals) Daily In 20,000 Daily Out 32,000 ADT on I-5 & HWY 101 104,000 (4,000) Estimate 13,200 from coast in 3 days ~ 40,000?

  13. It”s Not Just Us!

  14. HEALTHCARE Level 1 – Medical attention but no hospitalization approx. 1,500 Level 2 – Hospitalization but not life-threatening approx. 450 Level 3 – Hospitalization can become life-threatening approx. 73 Level 4 – Fatality approx. 137 Medical Facilities/Clinics – Providence St. Peter Hospital - < 40% of capacity Capital Medical Center - ~ 85% of capacity Clinics - ~ 65% of capacity Nursing Homes ~ 70% of capacity Assisted Living Facilities ~ 65% of capacity Adult Family Homes~ 75% of capacity ISSUES:

  15. SCHOOLS Approximately 116 Educational Structures in Thurston County No schools will be 100% Fully Functional ~ 35 Schools may experience Moderate Damage 10 to 12 Schools may experience Extensive to Complete Collapse Modeled that Potentially 50% of Fatalities will come from Schools ISSUES:

  16. HOUSING Single Family – 73,950 27,182 Slight 2,450 Mod. 46 Ex. 8 Comp. .07% Other Res. – 10,167 2,757 Slight 3,844 Mod. 1,444 Ex. 145 Comp. 16% Sheltering – 1 to 7 days potential 40,000 No Power/Water/Sewer Thurston County Residences 1,000 Households (4,500) Commuters ~ 20,000 I-5/ HWY 101 ~ 4,000 Others ~ 13,200 ISSUES:

  17. JOBS and ECONOMY Commercial – 4,799 671 Exten. or Complete; 1,444 Moderate 2,115 44% Government – 347 49 Exten. or Complete; 97 Moderate 146 42% Industrial – 219 38 Exten. or Complete; 69 Moderate 107 49% Agriculture – 900 81 Exten. or Complete; 171 Moderate 252 28% ISSUES:

More Related