TB 144 - Tsunami Response Plan Flashcards
The travel time of a “LOCALLY” generated tsunami, from initiation to arrival at coastal communities may be within ____ to _____ minutes.
5 to 30 minutes
Planning for “LOCAL” source tsunamis is extremely difficult.
Preparation, public outreach and _______ are key components to saving lives.
Education
Tsunamis from “DISTANT” sources are the ______ (most or least?) common type observed along the Pacific Coast of the United States.
Most common
The time required for a “DISTANT” tsunami to reach the Hawaiian and mainland coasts will vary between ____ and ____ hours, depending upon the tsunami place of origin.
5 ½ to 18 hours
LAFD Tsunami inundation maps provide detailed information such as:
-location of pre-determined evacuation routes
-safe refuge areas
-schools
-medical facilities
Alert and Notification
The West Coast/Alaska Tsunami Warning Center (WC/ATWC) in Palmer, Alaska, and the Hawaii based Pacific Tsunami Warning Center in Honolulu monitor potential tsunamis.
This warning system is only effective for tsunamis of _____ origin.
-distant origin
(The WC/ATWC may not detect a locally generated tsunami in sufficient time to warn authorities to evacuate potential tsunami-impact areas.)
A strong earthquake felt along the coastal areas of the City lasting longer than _____ seconds, should be considered a warning sign of a potential near source tsunami.
20 seconds
If an earthquake is felt, coastal residents, business owners and visitors should evacuate tsunami inundation areas.
What is often the first visible indication of an approaching local source tsunami?
-recession of water
(Any withdrawal of the sea should be considered a warning of an approaching wave.)
What are the seven types of Tsunami Alerts?
- Tsunami Warning (highest level)
- Tsunami Watch
- Tsunami Advisory
- Tsunami Information Bulletin
- Tsunami Information Message
- Tsunami Cancellation
- Tsunami Communication Test
Tsunami ______ is the highest level of alert.
It is given to local jurisdictions within an expected impact area after a tsunami triggering event has occurred, or when a tsunami has been detected anywhere in the Pacific Basin.
Tsunami Warning
(For earthquake magnitudes greater than 7.5, a Tsunami Warning is issued to areas within a 3 hour tsunami travel-time zone.)
Tsunami ______ is the second highest alert and is given to local jurisdictions outside of the “warning” area that a seismic event has occurred in the Pacific Basin and may have caused a tsunami.
It provides advance alert to areas that could be impacted by a tsunami and indicates these jurisdictions should monitor the event.
Tsunami Watch
(For earthquake magnitudes greater than 7.5, a Tsunami Watch is issued to areas within a 3 to 6 hour tsunami travel-time zone.)
A Tsunami ______ indicates that an area is either outside the current warning and watch regions, or that the tsunami poses no danger to that area.
Tsunami Advisory
(As conditions warrant, the Advisory will either be continued, upgraded to a watch or warning, or ended.)
The WC/ATWC issues Tsunami _________ to assure coastal residents and emergency managers that there is no tsunami danger.
Tsunami Information Messages
Tsunami waves from a DISTANT source often come as a series of waves, with the first wave NOT ALWAYS being the LARGEST.
In the event of a _______ source tsunami, the FIRST wave will be the largest wave.
Local
Tsunami Response
Concerned officers shall maintain LCES at all times when operating in the inundation zones.
Personnel and resource ________ shall be of the highest concern for all members.
accountability