Tsunami Notification Zones for British Columbia !. Stewart USA Alaska, United States of America B West Coast Alaska ritish Columbia, Canada Tsunami Warning Center (WCATWC) Breakpoint TERRACE C E A N " BC/AK Border T R PRINCE E N N X O D I RUPERT O! O!" Langara Island/ Henslung Cove O!!. Kitimat M A S S E T I N L E T Queen Hartley Charlotte O!Bay City O! H E C A T E S CONTACT T R A In the SLRD I T Bella Coola INFORMATION ! One may think that the SLRD as immune from any Tsunami Natural Hazard Guides Bella Bella O! hazards; we have rolling hills and immense towering peaks, but hazard still remains in parts of SLRD Area D land meets I the ocean. At the heart of a tsunami is an earthquake, and although the risk of a tsunami is low, risks of damage from F Area A r a earthquakes and landslides still exists. s To e R r oad R Cache i Gun Lake 40 Area B v 99 e r Creek Gold Bridge Tsunami Hazard Zones Bralorne R S F Seton Portage y e rl ke u a L H L il n lo o s The map below shows the areas that may be affected by o r e t e Lillooet d n 12 tsunamis. A tsunami is a large-scale disturbance of sea D'Arcy A R Area C iver To Port water triggered by submarine landslide, volcanic activity, Lytton O! Hardy West Coast Alaska and major earthquakes on the seabed. 99 Winter Tsunami Warning Center Port McNeill Pemberton Harbour ! L (WCATWC) Breakpoint O! illo Mt. Currie o e t Tsunami North Tip of Vancouver Island !< Port Alice L a k e S q u a S m q u Hazards is h a m i s h V Whistler !. O! Campbell a l l !< Zeballos e River y Area D R d R iv er P A C I F I C Squamish Britannia Beach O!O! O! O C E A N " !" VANCOUVER O!" Furry Creek PORTO NEW NANAIMO " 99 O! ALBERNI WESTMINSTER Tofino To Vancouver !. Ucluelet O! Bamfield 0 15 30 60 Kilometers O! The colours on this map represent Port Renfrew Phone: 604.894.6371 TsunamiWest Co aHazardst Alaska Zones set by VICTORIA O!" Toll Free: 1.800.298.7753 EmergencyTsunami Wa rnManagementing Center BC. For BC, !. W Can © (WCATWC) Breakpoint ash ada Fax: 604.894.6526 i more information on this map, visit ngto Sooke n, U AN INFORMATIVE GUIDE BCwww.embc.gov.bc.ca/-Washington Border SA Email: [email protected] AND CHECKLIST USA FOR British Columbia’s coast is a geologically active area, where Squamish-Lillooet Regional District Tsunami Notification Zones Notifications B.C. Tsunami Notification Zones Legend DEVELOPMENT Alert Level Threat Action two massive tectonic plates" comeCity together. ThisO! givesTide Gaug erise Box 219, 1350 Aster Street ZONE A - THE NORTH COAST AND HAIDA GWAII Tsunamis are rare but serious events. Many areas of coastal B.C. may be threatened in the event !. District Municipality Parks A Inundating wave possible Full evacuation suggested of a tsunami. However, it is generally accepted by scientific and technical experts that Victoria, Pemberton, BC V0N 2L0 eastern Vancouver Island, Vancouver antod the l owincreaseder mainland are low-risk are asrisk. of Earthquakes,! Town Tsunami, and volcanic IN HAZARD AREAS ZONE B - THE CENTRAL COAST AND NORTHWEST VANCOUVER ISLAND COAST Warning !< Regional District B INCLUDING KITIMAT, BELLA COOLA, AND PORT HARDY West Coast and Alaska Tsunami Warning Center (WCATWC) notifications refer to B.C. coastal Village areas in terms of “breakpoints” that, wactivityhile understood in tec hnasical cir clthees, will ha vJuane little meanin gde Fuca plate subducts (slides under) Strong currents likely Stay away from the shore Unincorporated/Indian Reserves (670) Denotes First Nation to the general public. Community office ZONE C - THE OUTER WEST COAST OF VANCOUVER ISLAND FROM Advisory 1:1,000,000 C CAPE SCOTT TO PORT RENFREW To ensure that all B.C. communities rectheeive appro pNorthriate tsunami mes saAmericanging, that is easily Plate on which the SLRD sits. 0 10 20 30 40 50 understandable using provincial landmarks, Emergency Management BC has divided the Sign up for Emergency Notifications at Danger level not known yet Stay alert for more information ZONE D - THE JUAN DE FUCA STRAIT FROM JORDAN RIVER TO GREATER province into five (5) zones for notification purposes. These zones are reflected on this map Watch in different colours and the letters A, B, C, D and E. Kilometres D VICTORIA INCLUDING THE SAANICH PENINSULA Prroduced fforr:: Prroduced by:: slrd.bc.ca/SLRDAlert All tsunami notifications prepared by the Province will refer to these five zones. Each of the five ZONE E - THE STRAIT OF GEORGIA INCLUDING THE GULF ISLANDS, Minor waves at most No action suggested Canada Weatheradio April 2013 designated zones includes all islands and inlets within the location descriptive. GREATER VANCOUVER AND JOHNSTONE STRAIT Please see our natural hazard E Information Created by: GeoBC. NL During Storms Filepath: \\GRANITE\work\ilmb\dss\projects\clients_new\pep\tsunami\PEP_tsunami_maps\Inundation Zones\ArcGISprojects\Tsunami_zoneA.mxd guide on earthquakes for more 72 Hour Kits information on these tectonic www.getprepared.ca plates. Tune into Weatheradio for Updates slrd.bc.ca Please Search “Official Community Plans” on the SLRD Website: OCPs Tsunamis in the SLRD INFORMATION specify development guidelines for each development permit area. Tsunamis: Consult a Professional IN YOUR AREA Tsunamis create immense pressure on buildings and structure as the water flows up and over beaches and Tsunamis in British banks. As such, structures may be required to be designed Columbia to withstand tsunami forces and to reduce the effects of damage. Landscaping may also aid in diverting water away from homes. A few feet of vertical height on a property can A tsunami is a wave train, or series of waves, mean the difference between flooding and avoiding tsunami generated in a body of water by an impulsive water. disturbance which vertically displaces the water column. Earthquakes, landslides, Seek advice from an expert when evaluating your volcanic eruptions and explosions can all property. generate a tsunami. Before, During, and After a Tsunami Earthquakes generate tsunami by displacing water from its equilibrium position. Large vertical movements can occur at plate Before: boundaries. Plates interact along these Log on to the SLRD web mapping and check to see if you are in a boundaries called faults. Pick up our natural Tsunami Area. If so, identify tsunami escape routes by car or by foot hazard guide on Earthquakes to see these and create a plan for evacuation. Prepare an evacuation kit with 72 faults along western Canada. hours of supplies. Survey your During: Surroundings SLRD Mapping and Parcel Lookup Move immediately to higher ground, taking your 72 hour kit with Look around your neighbourhood and examine the layout and you. If there is time, and it is safe to do so, take your pets with you. If structure of buildings, trees and landscape. This can give you an What Development Permits Apply to Your Area? evacuation maps are present, follow evacuation routes shown. If you idea of what types of development are allowed and what work cannot evacuate, move to a higher storey in a building, and bring a may need to be done to get your property ready to develop (and The SLRD Web Map uses GIS (Geographic Information Systems) floating object. If you are on a boat, deeper water is safer and if there to mitigate any potential hazards). to show information about a particular piece of land or feature on is time, move further away from shore. the landscape. After: Mitigative Measures 1. Visit the SLRD Website and click on the SLRD Listen to emergency radio and do not return to the evacuation area Maps Quick Link. until it is safe to do so. Be aware that there may be multiple tsunami You may choose to design, landscape, and reinforce your property waves following initial wave front. Be cautious when re-entering your so that it mitigates tsunami risk. Building at or near sea-level may 2. Read the Getting Started guide to learn which home and make note of any ruptured utility lines. increase your risk of tsunami flooding. Raised lower floors and map layers can help you identify information on having buildings diagonal to wave paths mitigates the destructive your land parcel. Signs of an Impending Tsunami forces of tsunami waves. 3. Find your parcel. Although you may not feel the earthquake that caused a tsunami, there Non-Structural Mitigative Measures are several tsunami warning systems in place around BC’s oceanfront Evacuation Route Signage Web mapping can help you find key information about your to detect and warn citizen of incoming waves. Alerts will happen on the property, such as: news, radio, or on the web to alert you of any incoming water. As well, Tsunami Zone Mapping Effects of Zoning on your Property a tsunami may be visible as a large incoming crest, and you may hear Structural Mitigative Measures a loud roaring of water. Ocean levels may rapidly recede, signalling an influx of water. Retaining Walls and Barriers If your property is in a Development Permit Area (DPA) and what guidelines may apply. Areas generally prone Areas Along Coastlines Proper Drainage Low Lying Coastal Areas to tsunamis are: Raising Structures Above Sea Level When developing in an area that may experience Unprotected Beach-front tsunamis, seek advice from a professional on proper design of buildings, and landscaping to reduce the likelihood of damage to your property.