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- Tsunami warning transmission system
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Tsunami warning transmission system
Last Updated October 1, 2021
Based on the lessons learned from the Great East Japan Earthquake that occurred on March 11, 2011, Yokohama City has installed a tsunami warning transmission system in the tsunami inundation prediction area to allow citizens to take evacuation actions as soon as possible in the event of a tsunami earthquake.
Installation location
Tsurumi Ward
- Tsurumi Ward General Government Building
- Shiota Junior High School
- Kansei Junior High School
- Shioiri Elementary School
- Namamugi Elementary School
- Namamugi Kainohama Ryokuchi Park
- Municipal Namamugi Housing
- Central Wholesale Market Meat Market
- Hokubu No.2 Wastewater Treatment Plant
- Daikokucho Daiichi Park
- Daikoku Futo T-1 Green Space
- Tsurumisuijyou Fire Office
- Daikoku Sea Lift Facility
Kanagawa Ward
- Iriegawa Park
- Irie 2-chome Park
- Near bicycle parking lots, Shinkoyasu Station
- Former Nanashima Town Children's Playground
- Urashima Fire Department Office
- Near Takaramachi
- Izutacho Wharf B Green Area
- Kanagawa Ward General Government Building
- Kanagawa Wastewater Treatment Plant
- Near Tsuruyacho Intersection
- Central Wholesale Market
Nishi Ward
- Near the exit of Yokohama-sta.-nishiguchi Metropolitan Expressway
- Takashima 2-chome East Exit No. 2 bicycle parking lots
- Near Utsumi Bridge
- Near Yokohama Station East Exit Bus Terminal
- Near the "Koban" (police box) Sotetsu Exit
- Near the Okanocho intersection
- Okano Junior High School
- Takashima 1-Chome National Highway
- Near Hiranuma Bridge
- Near Asayamabashi Bridge
- Rinko Park (Seaside Park)
- West Sports Center
- Hiranuma 1-chome
- Hiranuma Sawayaka Park
- Hiranuma Elementary School
- Nippon-Maru Memorial Park
Naka Ward
- Cup noodle museum park
- Aka Renga Park (Red Brick Warehouse Park)
- Canal Park
- Yokohama City Health and Welfare Center
- Zonohana Park
- Yamashita Park
- Yamashita-Futo
- Yokohama City Training Center
- Naka fire department
- Honmaki Wharf A jetty
- Honmaki Pier B Jetle
- Yamashita-Cho Koen
- Minato Sogo High School
- Yokohama city minato Red Cross Hospital
- Honmoku Wharf D
- Near the back bus stop of Honmoku Fishery Association
- Near "Koban" (police box), Negishi
- Honmoku Citizen Park
- Minami-Honmoku Futo
Minami Ward
- Near Fujimigawa Park
- Minamiyoshida Elementary School
- Hie Elementary School
Hodogaya Ward
- Near Tenno Bridge
Isogo Ward
- Negishi Community Care Plaza
- Negishi Elementary School
- Near the Yahatabashi intersection
- Isogo fire department
- Near Shinisoko-cho
- Near the shore of Isogo Seashore
- Isogo Ward General Government Building
- Byobugaura Elementary School
- Isogo Sports Center
- Sugita Elementary School
Kanazawa Ward
- Yokohama Bayside Marina
- Yokohama Southern Market
- Green space along Route 1
- Namiki Daiichi Elementary School
- Kanazawa Plant
- Green Space along Nagahama Waterway
- The beach promenade
- Ko-Shibazaki Green Road
- Marine Park
- Hakkei Elementary School
- Hakkeijima
- Kanazawa Elementary School
- Yanagimachi Community House
- Near Nojimakoen Station
- Near Nojima Youth Training Center in Yokohama
- Rokuura Junior High School
Mechanism
In response to large tsunami warnings, tsunami warnings, and tsunami warnings announced by the Japan Meteorological Agency, emergency information such as tsunami warnings and evacuation warning will be automatically broadcast from the installed outdoor speakers.
The power supply is powered by independent solar power generation and storage batteries.
System image diagram
Broadcast audio
When a large tsunami warning, tsunami warning, or tsunami warning are announced in the inner bay of Tokyo Bay, this system broadcasts will be broadcast. The large tsunami warning will be broadcast (two types) according to the expected height of tsunami.
Large tsunami warning (10m <Estimated height of tsunami)
- Siren (4 times)
Approx. 3 seconds (about 2 seconds) - Broadcast text
"Large tsunami warning, large tsunami warning, large tsunami warning" - Siren (4 times)
Approx. 3 seconds (about 2 seconds) - Broadcast text
"The huge tsunami comes. A huge tsunami comes." - Siren (4 times)
Approx. 3 seconds (about 2 seconds) - Broadcast text
"Evacuation to a high place. Evacuate to a high place." - Siren (4 times)
Approx. 3 seconds (about 2 seconds) - Broadcast text
"Tsunami, Tsunami, Tsunami" (1st set: English, 2nd set: Chinese, 3rd set: Korean) - Siren (4 times)
Approx. 3 seconds (about 2 seconds) - Broadcast text
"Evacuate to a high place." (First set: English, 2nd set: Chinese, 3rd set: Korean) - Siren (4 times) (3rd set only)
Approx. 3 seconds (about 2 seconds)
※3 sets from 1 to 10 will be broadcast. In addition, each set will broadcast words that encourage evacuation in different languages (English, Chinese, Korean)
※The 11 sirens will be broadcast only on the third set.
Large tsunami warning sound source (10m <expected height of tsunami) (Music file (MP3): 7,314KB)
Large tsunami warning (3m <Estimated height of tsunami ≤10m)
- Siren (4 times)
Approx. 3 seconds (about 2 seconds) - Broadcast text
"Large tsunami warning, large tsunami warning, large tsunami warning" - Siren (4 times)
Approx. 3 seconds (about 2 seconds) - Broadcast text
"Evacuation to a high place. Evacuate to a high place." - Siren (4 times)
Approx. 3 seconds (about 2 seconds) - Broadcast text
"Tsunami, Tsunami, Tsunami" (1st set: English, 2nd set: Chinese, 3rd set: Korean) - Siren (4 times)
Approx. 3 seconds (about 2 seconds) - Broadcast text
"Evacuate to a high place." (First set: English, 2nd set: Chinese, 3rd set: Korean) - Siren (4 times) (3rd set only)
Approx. 3 seconds (about 2 seconds)
※We will broadcast 3 sets from 1 to 8. In addition, each set will broadcast words that encourage evacuation in different languages (English, Chinese, Korean)
※9 sirens will be broadcast only on the third set.
Tsunami warning (1m <Estimated height of tsunami ≤3m)
- Siren (twice)
Approx. 5 seconds (about 6 seconds) - Broadcast text
Tsunami Warning, Tsunami Warning, Tsunami Warning, Tsunami Warning - Siren (twice)
Approx. 5 seconds (about 6 seconds) - Broadcast text
"Evacuation to a high place. Evacuate to a high place." - Siren (twice)
Approx. 5 seconds (about 6 seconds) - Broadcast text
"Tsunami, Tsunami, Tsunami" (1st set: English, 2nd set: Chinese, 3rd set: Korean) - Siren (twice)
Approx. 5 seconds (about 6 seconds) - Broadcast text
"Evacuate to a high place." (First set: English, 2nd set: Chinese, 3rd set: Korean) - Siren (twice) sounding (3rd set only)
Approx. 5 seconds (about 6 seconds)
※We will broadcast 3 sets from 1 to 8. In addition, each set will broadcast words that encourage evacuation in different languages (English, Chinese, Korean)
※9 sirens will be broadcast only on the third set.
Tsunami warning sound source (1m <Expected height of tsunami ≤3m) (Music file (MP3): 5,648KB)
Tsunami warning (0.2m ≤ tsunami expected height ≤ 1m)
- Siren (twice)
Approx. 10 seconds (about 2 seconds) - Broadcast text
"Tsunami Warning, Tsunami Warning, Tsunami Warning, Tsunami Warning" - Siren (twice)
Approx. 10 seconds (about 2 seconds) - Broadcast text
"Be away from the sea. Please stay away from the sea." - Siren (twice)
Approx. 10 seconds (approx. 2 seconds) (3rd set only)
※3 sets of 1 to 4 will be broadcast.
※The 5 siren will be broadcast only on the third set.
Tsunami warning sound source (0.2m <Expected height of tsunami ≤ 1m) (Music file (MP3): 4,776KB)
Notice
About the nationwide simultaneous information transmission test of the national instantaneous alarm system (J Alert) implemented by the government (Notice)
Please refer to the disaster prevention speaker page for the nationwide simultaneous information transmission test of the national instantaneous alarm system (J Alert) implemented by the government.
For inquiries to this page
Emergency Response Division, General Affairs Bureau Crisis Management Department
Phone: 045-671-2064
Phone: 045-671-2064
Fax: 045-641-1677
Email address: so-kinkyu@city.yokohama.jp
Page ID: 181-870-243