Re: [CaliforniaDisasters] As Seen on TV: Could a Hollywood-Sized Tsunami Hit Santa Monica?

Interesting read. i missed the show as i was working. 

While Santa Monica itself may be relatively immune to tsumami conditions, Redondo Beach (where i live), a bit further south, looks prime. There is a deep underwater canyon which can and has channeled wave energy towards King Harbor with destructive results. It also contributes to the local surf and riptide conditions where otherwise the waves would be flat as the southern part of Santa Monica Bay is shadowed by the Palos Verdes Peninsula.

On high ground in Redondo Beach,

73,

kevin

kc6pob

On Mon, Sep 30, 2019 at 12:19 AM Kim Noyes <kimnoyes@gmail.com> wrote:

As Seen on TV: Could a Hollywood-Sized Tsunami Hit Santa Monica?

Posted by CalConservation on September 25, 2019

On Monday night, the Fox Television show "9-1-1" was based around a 50-foot tsunami hitting the Southern California coast near Santa Monica.  The show employed the giant water tanks that were used to create the effects in the movie "Titanic." The episode ended (to be continued!) with a cresting wave about to engulf the pier.

Entertaining stuff, to be sure. But reality? Could a tsunami this size really happen in Southern California?

Unless it's caused by an asteroid plunging into the ocean, probably not.

The California Geological Survey has worked with other experts in the tsunami field for over a decade to determine the maximum tsunami threats which could impact each section of the California coast.  There are earthquake and landslide sources offshore of Southern California which could generate a tsunami that hits the coast in 10 minutes. However, there are no tsunami sources capable of creating the giant "tidal wave" portrayed in the TV show.

The largest locally-sourced tsunami which could hit Santa Monica would be about 8 feet tall, which could flood the beach and injure people if they do not immediately evacuate to higher ground.

The maximum tsunami possible in Santa Monica is about 15 feet high. Such a tsunami would be generated by a massive earthquake off the coast of Alaska, so people in Southern California would get 5-6 hours of warning — plenty of time to get to a higher, safe location.

The reality of tsunami hazards is not always represented correctly by Hollywood. But that doesn't mean they're not dangerous or that folks who live near or visit the beach shouldn't learn about and prepare for future tsunamis.

ARE YOU PREPARED FOR A TSUNAMI?

If you really want to see how much flooding could occur along the California coast from the largest tsunamis, visit www.tsunami.ca.gov and take a look at our tsunami inundation maps for evacuation planning for your area of interest.

So, we hoped you enjoyed the TV show – the next episode, "Sink or Swim" – airs at 8 p.m. Monday, but make sure you understand the realistic tsunami hazards you could face and be prepared for them.

Source: https://calconservation.blog/2019/09/25/as-seen-on-tv-could-a-hollywood-sized-tsunami-hit-santa-monica/

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[CaliforniaDisasters] 1987 Whittier Narrows Quake Anniversary - Tue, 10/01/2019 #cal-notice

1987 Whittier Narrows Quake Anniversary

When:
Tuesday, 1 October 2019

Where:
San Gabriel Valley - Los Angeles County

Description:
The 1987 Whittier Narrows earthquake occurred in the southern San Gabriel Valley and surrounding communities of southern California at 7:42 a.m. PDT on October 1. The moderate 5.9 magnitude blind thrust earthquake was centered several miles north of Whittier in the town of Rosemead, had a relatively shallow depth, and was felt throughout southern California and southern Nevada. A large number of homes and businesses were impacted, along with roadway disruptions, mainly in Los Angeles and Orange counties. Damage estimates ranged from $213–358 million, with 200 injuries, three directly-related deaths, and five additional fatalities that were associated with the event.

Source: https://en.wikipedia.org/wiki/1987_Whittier_Narrows_earthquake

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[CaliforniaDisasters] South Ops News & Notes Update (9/30/2019-5:25PM)

Date	Time	News and Notes
09/30/2019	1725	Federal Schaeffer, Vegetation Fire, Tulare County, Update 20 miles north of Kernville Federal DPA, FRA Sequoia National Forest 290 acres (+60 acres), grass and brush, 50% contained (+15% containment) Incident submitting 1 ICS-209 daily at 1800 Taboose, Vegetation Fire, Inyo County, Update 9 miles south of Big Pine Federal/State DPA, FRA/SRA, Inyo National Forest 10,296 acres (+0 acres), grass and brush, 75% contained (+0% containment) Area closures remain in effect Incident submitting 1 ICS -209 weekly on Thursdays at 1800
09/30/2019	0702	Federal Taboose, Vegetation Fire, Inyo County, Update 9 miles south of Big Pine Federal/State DPA, FRA/SRA, Inyo National Forest 10,296 acres (+0 acres), grass and brush, 75% contained (+0% containment) Area closures remain in effect Incident submitting 1 ICS -209 weekly on Thursdays at 1800 Schaeffer, Vegetation Fire, Tulare County, Update 20 miles north of Kernville Federal DPA, FRA Sequoia National Forest 230 acres (+0 acres), grass and brush, 35% contained (+0% containment) Incident submitting 1 ICS-209 daily at 1800

Source: https://gacc.nifc.gov/oscc/news.php

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[CaliforniaDisasters] North Ops News & Notes Update (9/30/2019-6:05PM)

Dates	Time	News and Notes
09/30/2019	1805	CA-SHF South Fire: 5,330 acres, 62% contained. Fire behavior remained minimal due to to high humidity and moisture over the fire area from previous days. The decrease in acres is due to better mapping. Road and trail closures remain in effect for the fire area. There is a threat to prehistoric trails, historic sites, and endangered Salmon. Fire may impact a Class 1 Airshed within the Yolla Bolla Wilderness.

Source: https://gacc.nifc.gov/oncc/news.php

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[CaliforniaDisasters] Sundowner Wind Advisory (9/30/2019-AM)

URGENT - WEATHER MESSAGE  National Weather Service Los Angeles/Oxnard CA  1006 AM PDT Mon Sep 30 2019    CAZ039-052-010400-  /O.NEW.KLOX.WI.Y.0069.190930T2300Z-191001T1000Z/  Santa Barbara County South Coast-Santa Barbara County Mountains-  Including the cities of Santa Barbara, Montecito, Carpinteria,  San Marcos Pass, San Rafael Wilderness Area,  and Dick Smith Wilderness Area  1006 AM PDT Mon Sep 30 2019    ...WIND ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO 3 AM PDT  TUESDAY...    * WHAT...North winds 20 to 30 mph with gusts up to 45 mph    expected.    * WHERE...The Santa Ynez Range and the south coast of Santa    Barbara County, strongest from Montecito west. This includes    highways 101, 154, and 192.    * WHEN...From 4 PM this afternoon to 3 AM PDT Tuesday.    * IMPACTS...Gusty winds will make driving difficult and could    blow around unsecured objects. Tree limbs could be blown down    and a few power outages may result.    PRECAUTIONARY/PREPAREDNESS ACTIONS...    Use extra caution when driving, especially if operating a high  profile vehicle. Secure outdoor objects.

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