Typhoon Ketsana hits Vietnam; death toll in Philippines swells to 246

By: Dr. Jeff Masters , 1:37 PM GMT on September 29, 2009

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Typhoon Ketsana slammed into Vietnam this morning as a Category 2 typhoon with 105 mph winds. Ketsana brought sustained winds of 55 mph, gusting to 71 mph to Da Nang Vietnam. Heavy rainfall amounts of 7.2" and 9.1" were observed at Da Nang, and Hue, respectively, over the past two days. Floods and landslides in Vietnam from Ketsana's heavy rains have already claimed at least 22 lives.


Figure 1. Cars being swept away by Ketsana's flood waters in Manila's Park 9 Alley, where the Barangay Hall of Loyola Heights is located. Image credit: Manuel Quezon III.

The death toll in the Philippines from Ketsana continues to rise, with 284 dead or missing. The storm flooded the homes of 1.9 million people, leaving 350,000 people homeless. Ketsana brought 16.7 inches of rain in a twelve-hour period to Manila on Saturday, which was the heaviest 1-day rainfall ever recorded in the city. Ketsana is the third deadliest deadliest tropical cyclone to affect the globe so far this year. The deadliest was Typhoon Morakot, which left 654 people dead or missing on Taiwan, when it hit the island as a Category 2 typhoon on August 7. The second deadliest was Cyclone Aila, which made landfall near the India/Bangladesh border on May 25 as a tropical storm with 70 mph winds. Aila killed at least 339 people, 149 in India and 190 in Bangladesh.

The Philippines have three more tropical cyclones to their east to keep an eye on. So far, none of these storms appear to pose a major threat. Tropical Storm Parma is expected to curve to the northwest and miss the islands, Tropical Depression 18 is expected to dissipate, and newly-formed Tropical Depression 20 will probably pass to the north of the islands.


Figure 2. Rainfall from Tropical Storm Ketsana as estimated by NASA's TRMM satellite. Image credit: NASA Earth Observatory.

How to help Ketsana victims
Help the UN World Food Programme by making a donation. This program identifies families in specific need of aid. Just $18 provides a family with rice for two weeks. This is the most critical and immediate way you can make an impact.

Donate to the International Red Cross and help them continue to put relief workers on the ground in the Philippines.

Donate via Catholic Relief Services online of the Philippines or call 1-877-HELP-CRS.

Quiet in the Atlantic
None of the computer models are forecasting tropical storm formation in the Atlantic over the next seven days. Wind shear is predicted to be high in the Gulf of Mexico and Caribbean this week, limiting the potential for anything to affect land.

Jeff Masters

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I've read that the 2004 tsunami was so large it jolted the entire globe and altered rotation. This is only 1 of the 3 features that are known to affect the earth's internal angular moment - the other 2 being El Nino and the MJO.
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474. JLPR
Quoting Weather456:


remember that from Caribbean Geography class.


Hey 456 any thoughts on this little wave?
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Quoting JLPR:


yep the PR trench :|
from that one PR got a 7.5 earthquake in 1918 with a Tsunami with 20 feet waves

but it has been awhile since that


remember that from Caribbean Geography class.
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472. JLPR
Quoting Weather456:
While the Pacific side of North America is probably the ones that are prone more to earthquakes and tsunamis; there are three major sources of a Caribbean and East Coast tsunami - the Puerto Rican Trench, the subduction zone that the Lesser Antilles lay on and a volcano near the Canaries.


yep the PR trench :|
from that one PR got a 7.5 earthquake in 1918 with a Tsunami with 20 feet waves

but it has been awhile since that
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470. xcool
Weather456 I agree with you !
Member Since: September 26, 2009 Posts: 2 Comments: 15648
Quoting xcool:
Mother Nature's Send Message.imo :(


maybe she's hot-headed from all the warming.
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Quoting BahaHurican:
Apparently SE Antilles are fairly vulnerable to them due to the potential for volcano-related earthquakes. Also keeping in mind that much of the Caribbean basin is potentially vulnerable to fault-related earthquakes, tsunami are actually not that unlikely in our area. I read a report last year that referenced century-old reports of such waves after major earthquakes / volcanic eruptions in our area....


very true. We had an earthquake here in November 2007 that triggered tsunami fears since it was a big one, strongest in years. They even had a tsunami model animation for it for the Lesser Antilles but I cant find it. If anyone remember this animation, post it plz. Thanks.

Also that earthquake strong near the very same location of Dean just months earlier - near Dominica.
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466. xcool
Mother Nature's Send Message.imo :(
Member Since: September 26, 2009 Posts: 2 Comments: 15648

AOI

AOI

AOI

AOI


Check out the comments section for the Comedy
Member Since: October 1, 2007 Posts: 81 Comments: 26511
Quoting NRAamy:
um....another stupid question over here....I live on the coast in Southern Calif...do I need to get to higher ground?

:(



no
Member Since: May 21, 2006 Posts: 5091 Comments: 114954
Quoting Weather456:


could it be the beginnings of the Rapture.

That would work.
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Quoting Weather456:
The real danger of tsunamis as oppose to other types of waves is that the "wall of water" does not appear until they reach the coast.

The reason being is that over open water the wave lengths are far part and the ocean remains deep and they can travel very fast with subtle signs. As they near the coast, the ocean floor cause them to slow down, while the waves behind continue at their respective speeds. This results in the wave behind piling up with the wave in front and so forth causing the wall of water we see as tsunamis.

I dont know what I would do if threaten by one - I live on an island.
Apparently SE Antilles are fairly vulnerable to them due to the potential for volcano-related earthquakes. Also keeping in mind that much of the Caribbean basin is potentially vulnerable to fault-related earthquakes, tsunami are actually not that unlikely in our area. I read a report last year that referenced century-old reports of such waves after major earthquakes / volcanic eruptions in our area....
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Quoting Weather456:


could it be the beginnings of the Rapture.


Naaa....everyone's gotta relieve the stress some how...even Mother Earth.
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Quoting Weather456:


could it be the beginnings of the Rapture.


ahem, you mean the Rupture? ;)
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Quoting aquak9:
and a 5.4 due east of Japan..about six minutes ago...

world's cracking up..


could it be the beginnings of the Rapture.
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yawn...5.0 aftershock, same area as the original 8.0...thirty minutes ago...

anyone got some duct tape?
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My blog is updated

Typhoon Ketsana strikes Vietnam

Why was Ketsana so wet?


Tropical Update



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Quoting aquak9:
add a nice little 4.1 mag, about 120 miles northwest of Amarillo, TX...less than an hour ago...


Magnitude 4.1
Date-Time

* Tuesday, September 29, 2009 at 22:54:07 UTC
* Tuesday, September 29, 2009 at 04:54:07 PM at epicenter
* Time of Earthquake in other Time Zones

Location 36.825°N, 104.720°W
Depth 5 km (3.1 miles) set by location program
Region NEW MEXICO
Distances

* 26 km (16 miles) WSW (252°) from Raton, NM
* 36 km (22 miles) NNW (334°) from Maxwell, NM
* 37 km (23 miles) SSW (194°) from Cokedale, CO
* 161 km (100 miles) S (183°) from Pueblo, CO
* 323 km (201 miles) S (176°) from Denver, CO

Location Uncertainty Error estimate not available
Parameters NST= 34, Nph= 45, Dmin=261.6 km, Rmss=0 sec, Gp= 50°,
M-type=local magnitude (ML), Version=6
Source

* USGS National Earthquake Information Service, Golden, Colorado, USA

Event ID us2009mdda

* This event has been reviewed by a seismologist.
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and a 5.4 due east of Japan..about six minutes ago...

world's cracking up..
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add a nice little 4.1 mag, about 120 miles northwest of Amarillo, TX...less than an hour ago...
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I'll check back later. Time to rustle up some grub...
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Quoting atmoaggie:

Every red X is 6 minutes...it took 18 minutes for the water surface elevation to rise from 2 feet above MLLW (mean lower low water) to 6 feet above. And lingered close to 6 for one more 6 minute reading. For those following at home, that is 24 minutes. Do what you will with this information...


I'm going to continue this "debate" (right?) because I think you're not seeing what I'm seeing.

This is the textual data for the hour-period just before the highest recorded ob:

09/29/2009 07:36:00 SST 1.01 1.26 0.25 4 093 13 1013.8 78.6 88.0 -999.9
09/29/2009 07:42:00 SST 0.96 -99.99 -99.99 10 083 14 1013.8 78.8 88.0 -999.9
09/29/2009 07:48:00 SST 0.91 5.83 4.92 9 069 15 1013.9 78.1 88.0 -999.9
09/29/2009 07:54:00 SST 0.86 -1.07 -1.93 9 074 18 1014.0 78.8 88.0 -999.9
09/29/2009 08:00:00 SST 0.81 0.61 -0.20 10 083 14 1014.0 79.2 88.0 -999.9
09/29/2009 08:06:00 SST 0.77 4.40 3.63 9 075 16 1014.0 79.2 88.0 -999.9
09/29/2009 08:12:00 SST 0.72 -99.99 -99.99 10 080 19 1014.1 79.5 88.0 -999.9
09/29/2009 08:18:00 SST 0.68 2.14 1.46 11 081 16 1014.1 79.5 -99.9 -999.9
09/29/2009 08:24:00 SST 0.64 0.01 -0.63 10 083 16 1014.2 79.5 88.2 -999.9
09/29/2009 08:30:00 SST 0.60 1.23 0.63 14 075 18 1014.2 79.3 88.2 -999.9


You're saying that during a 24-minute period it started at 2 feet, rose to 6 feet on the next 6-minute ob, and then close to 6 feet on the third 6-minute ob. But, this just isn't true.

Discount the invalid wave ob at 7:42.

At 7:36 the water heights were only 1 1/2 feet above MLLW. Somewhere over the next 12 minutes the water level rose nearly 6 feet. On the next 6-minute ob the water level dropped to -1 foot. This was followed by another ob just under 1 foot above MLLW and then the next ob was 4 1/2 feet above MLLW.

This does not go with your argument that the water level remained near 6-feet for a 24-minute period.

My original comment was to show the previous commenter that you could see there was definately wave action out of the ordinary in that area where the observation was taken. Those observations were mentioned by the Pacific Tsunami center as, in part, a basis for their tsunami warning. This wasn't a hurricane-like storm surge that passed through this area. This was a minor tsunami that was probably only 20 feet at best that, as we know now, has since dissipated.

Now, I'll conclude that with this statement: I'm not an eartquake expert. I found the topic interesting and enjoyed following the comments and reading the links. Perhaps I'll develop that further.

But, you can't argue with what the observations were coming from that region.
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Quoting presslord:
mik...not yet that I've seen...been trying to reach a nun friend of mine in Saigon to no avail...


Tough times for a bunch of people. Hope everyone's ok...
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While the Pacific side of North America is probably the ones that are prone more to earthquakes and tsunamis; there are three major sources of a Caribbean and East Coast tsunami - the Puerto Rican Trench, the subduction zone that the Lesser Antilles lay on and a volcano near the Canaries.
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WWUS86 KLOX 292231
SPSLOX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
331 PM PDT TUE SEP 29 2009

CAZ034-035-039>041-087-300430-
CATALINA ISLAND-LOS ANGELES COUNTY COAST INCLUDING DOWNTOWN LOS
ANGELES-SAN LUIS OBISPO COUNTY CENTRAL COAST-SANTA BARBARA COUNTY
CENTRAL COAST-SANTA BARBARA COUNTY SOUTH COAST-VENTURA COUNTY COAST-
331 PM PDT TUE SEP 29 2009

...TSUNAMI ADVISORY IS IN EFFECT FOR THE IMMEDIATE COASTAL AREAS OF
SOUTHERN AND CENTRAL CALIFORNIA...

THIS IS NOT A TSUNAMI WARNING OR TSUNAMI WATCH. REPEAT...THIS IS NOT
A TSUNAMI WARNING OR TSUNAMI WATCH.

HOWEVER...A MINOR TSUNAMI MAY BE RECORDED IN SOME AREAS OF THE COAST
WHICH COULD PRODUCE DANGEROUS CURRENTS AND SURGES IN HARBORS AND
BAYS. COASTAL RESIDENTS ARE ADVISED TO STAY OUT OF THE WATERS...OFF
THE BEACH AND AWAY FROM HARBORS AND MARINAS. WAVE HEIGHT AND
CURRENTS ARE AMPLIFIED BY IRREGULAR SHORELINE AND ARE DIFFICULT TO
PREDICT. MINOR WAVE FLUCTUATIONS AROUND ONE FOOT ARE EXPECTED TO
BEGIN AT:

PORT SAN LUIS HARBOR.... AT 8:59 PM LOCAL TIME

SANTA BARBARA HARBOR.... AT 9:03 PM LOCAL TIME

SAN PEDRO HARBOR........ AT 9:06 PM LOCAL TIME

SANTA MONICA HARBOR..... AT.9:11 PM LOCAL TIME

THESE MINOR WAVE FLUCTUATIONS COULD CONTINUE FOR SEVERAL HOURS. THE
INITIAL WAVE MAY NOT BE THE LARGEST. MARINERS IN WATER DEEPER THAN
600 FEET SHOULD NOT BE AFFECTED BY A TSUNAMI.

THE TSUNAMI ADVISORY IS A RESULT OF THE 8.0 EARTHQUAKE THAT OCCURRED
AT 10:48 AM PDT NEAR THE SAMOA ISLAND REGION.

STAY TUNED TO YOUR LOCAL NEWS SOURCE AN NOAA WEATHER RADIO FOR
FURTHER DEVELOPMENTS.

THIS PRODUCT WILL BE UPDATED IF ANY NEW DETAILS ARE AVAILABLE.
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Member Since: July 3, 2005 Posts: 423 Comments: 127810
Here ya go NRA...just stay out of the water.

CAZ042-043-PZZ750-PZZ775-300600-
ORANGE COUNTY COASTAL AREAS-
SAN DIEGO COUNTY COASTAL AREAS-
COASTAL WATERS FROM SAN MATEO POINT TO THE MEXICAN BORDER AND OUT 30
NM-
WATERS FROM SAN MATEO POINT TO THE MEXICAN BORDER EXTENDING 30 TO 60
NM OUT INCLUDING SAN CLEMENTE ISLAND-
356 PM PDT TUE SEP 29 2009

...A TSUNAMI ADVISORY IS IN EFFECT FOR ORANGE COUNTY AND SAN DIEGO
COUNTY COASTAL AREAS...

THERE IS NO TSUNAMI WATCH OR WARNING IN EFFECT AT THIS TIME FOR
THE EXTREME SOUTHWESTERN CALIFORNIA COAST. HOWEVER...DANGEROUS
CURRENTS AND SURGES ARE POSSIBLE IN THE LOCAL HARBORS AND BAYS.

THIS THREAT IS EXPECTED TO BEGIN FOR COASTAL SAN DIEGO AND ORANGE
COUNTIES AROUND 900 PM THIS EVENING.

FORECASTS INDICATE THAT A TSUNAMI WITH AMPLITUDES IN THE RANGE OF 15
TO 20 CENTIMETERS (6 TO 8 INCHES) IS EXPECTED ALONG THE SOUTHERN
CALIFORNIA COAST.

COASTAL RESIDENTS ARE ADVISED TO STAY OUT OF THE WATER...OFF THE
BEACH...AND AWAY FROM HARBORS AND MARINAS. WAVE HEIGHTS AND
CURRENTS ARE AMPLIFIED BY IRREGULAR SHORELINE AND ARE DIFFICULT TO
PREDICT. THE INITIAL WAVE MAY NOT BE THE LARGEST. LATER WAVES MAY
BE LARGER. MARINERS IN WATER DEEPER THAN 600 FEET SHOULD NOT BE
AFFECTED.

A TSUNAMI ADVISORY MEANS THAT A TSUNAMI CAPABLE OF PRODUCING STRONG
CURRENTS OR WAVES DANGEROUS TO PERSONS IN OR VERY NEAR THE WATER IS
IMMINENT OR EXPECTED. SIGNIFICANT WIDESPREAD INUNDATION IS NOT
EXPECTED FOR AREAS UNDER THE ADVISORY. CURRENTS MAY BE HAZARDOUS TO
SWIMMERS...BOAT...AND COASTAL STRUCTURES AND MAY CONTINUE FOR
SEVERAL HOURS AFTER THE INITIAL WAVE ARRIVAL.

THE TSUNAMI ADVISORY IS A RESULT OF THE 8.0 EARTHQUAKE THAT OCCURRED
AT 10:48 AM PDT NEAR THE SAMOAN ISLANDS.

STAY TUNED TO YOUR LOCAL MEDIA SOURCE OR NOAA WEATHER RADIO FOR
LATER DEVELOPMENTS.

THIS PRODUCT WILL BE UPDATED WHEN NEW INFORMATION BECOMES AVAILABLE
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Quoting caneswatch:
The news station I watch here in South Florida had a special on what if a tsunami hits South Florida. They said that there's something on the Canary Islands that will cause a tsunami to hit here sooner or later. They said a tsunami would come 10-15 miles inland.
"t's not something anyone could control. And it may never happen in your lifetime. (Though it could.)

But some scientists have developed a scenario in which a titanic landslide off the western coast of Africa could trigger a tsunami that would race across the Atlantic Ocean in nine hours and slam into Florida's east coast.

A computer model has it hitting Cape Canaveral harder than any hurricane - with a speeding wall of water 82 feet high, more than twice as tall as the 40-foot tsunami waves that devastated coastal areas Sunday across South and Southeast Asia, killing thousands.

The good news: Floridians and others on the U.S. East Coast likely would have days, even weeks, of warning.

The Florida scenario, made public in 2001 by a team of scientists in London and California, isn't one that creates much urgency at the National Oceanic and Atmospheric Administration. That agency and others concentrate their efforts in the Pacific basin, where tsunamis caused by earthquakes occur with relative frequency.

So common are earthquakes in that region that officials worry about false alarms.

The nation's Tsunami Hazard Mitigation Implementation Plan focuses on protecting coastal residents in California, Washington, Oregon, Hawaii and Alaska.

But could a tsunami threaten a certain low-lying state at the other end of the country? One surrounded on three sides by water? One already plagued by hurricanes, wildfires and drought?

"That's a good question," said Harold Mofjeld, a senior scientist at NOAA's Tsunami Research Program in Seattle.

What about a tsunami from the Gulf of Mexico?

"Unknown," Mofjeld said. Scientists are only now engaging in basic research about the gulf's continental slope, he said.

As for the Atlantic Ocean: "That's the next step."

Mofjeld said NOAA's responsibilities include notifying Americans about tsunamis from the east. But preparations are nowhere near the level of preparedness in the Pacific, with its impressive system of stations and buoys monitoring seismic and wave activity thousands of miles from U.S. shores.

Plans are under way for a warning center based in Puerto Rico that would warn of tsunamis generated by earthquakes in the Caribbean. The Atlantic, however, is not as prone to earthquakes as the Caribbean or the Pacific, Mofjeld said.

He said it doesn't have the same "subduction zones," where plates of the earth's crust overlap and grind, eventually giving way to the pressure.

Researchers, he said, are still tackling the question of how landslides cause tsunamis - the phenomenon that gives rise to the Florida scenario.

"How probable it is I don't think anybody has any idea right now," Mofjeld said. "It would have to be a very big event to begin with."

A "very big event" is exactly what scientists Simon Day and Steven N. Ward envision with the potential collapse of the Cumbre Vieja volcano in the Canary Island chain off the western coast of Africa.

Day works at the Benfield Greig Hazard Research Centre at University College in London. The center says it provides "cutting-edge" risk research for business, government and international agencies. Ward, a research geophysicist at the University of California at Santa Cruz, applied Day's theories about the Cumbre Vieja volcano to a computer model.

Based on evidence of a dozen major volcanic collapses in the Canary Islands over millions of years, the scientists say the western flank of Cumbre Vieja is due to give way during a future volcanic eruption. The last three eruptions were in 1971, 1949 and 1712.

In an interview Monday, Ward compared the vast layers of volcanic ash collecting on the mountain to roof shingles being piled high.

"They're not very stable," he said.

The scientists say the next eruption or two - or three or four - could trigger a massive collapse of the mountain's western flank. They estimate the falling chunk could be the size of a small island, perhaps 9 miles long and 9 miles wide.

They say it would drop almost vertically from the Cumbre Vieja's especially steep slope and straight into waters measuring 4,000 feet deep. Ward likened it to dropping a vast quarry into the ocean from several hundred feet. The energy released would be equal to all the electricity consumed in the United States over six months.

From there, the scenario plays out like a Hollywood disaster film.

Within two minutes, a massive splash or "water dome" reaches 3,000 high. Within an hour, waves up to 300 feet sweep through the islands and crash along the African mainland. In three to six hours a tsunami 300 miles long arcs across the Atlantic, hitting Spain and England with small waves. The north end of the arc brushes Newfoundland with 32 foot waves; the south end hits South America with 65 foot waves.

"At nine hours," the scientists' paper says, "Florida faces a tsunami, now parading in a dozen cycles or more."

It likely would go several miles inland and result in trillions of dollars of damage, the paper says.

Not wanting to scare the public, the scientists add several caveats: The volcanic eruption would happen gradually, affording time to prepare; the model envisions the mountainside collapsing in one piece; and there's no telling how many eruptions it would take to bring about the collapse.

Day could not be reached Monday for comment but has said that the "short-term and medium-term" risks of a collapse are "negligible."

However, at a news conference Monday in London, Benfield Greig scientists told reporters that the U.S. should take the threat at Cumbre Vieja more seriously.

"The important message here is we want to keep a little closer eye on (Cumbre Vieja) perhaps," Ward said in an interview. As for a tsunami monitoring system in the Atlantic, he said, "It wouldn't hurt."

- Information from Reuters was used in this report.

[Last modified December 28, 2004, 04:28:17]"

Available on Tampabay.com
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Quoting HIEXPRESS:

Perhaps something like this would work.


or a really big pogo stick...
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Illustration of how a tsunami wave grows as it nears the coast

from 1:36 to 2:15, it's a very scary scene

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NRA - I am here in S. Cal as well...in Chula Vista. La Jolla has tsunami advisories but I don't think it's going to be anything by the time it gets here. I live on pretty high ground but maybe staying away from the beach might be an idea. Who knows...I asked the same thing earlier.
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Member Since: July 3, 2005 Posts: 423 Comments: 127810
Quoting Weather456:
The real danger of tsunamis as oppose to other types of waves is that the "wall of water" does not appear until they reach the coast.

The reason being is that over open water the wave lengths are far part and the ocean remains deep and they can travel very fast with subtle signs. As they near the coast, the ocean floor cause them to slow down, while the waves behind continue at their respective speeds. This results in the wave behind piling up with the wave in front and so forth causing the wall of water we see as tsunamis.

I dont know what I would do if threaten by one - I live on an island.

Perhaps something like this would work.
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mik...not yet that I've seen...been trying to reach a nun friend of mine in Saigon to no avail...
Member Since: August 13, 2007 Posts: 0 Comments: 10484
Hi Press - no word from Dan?
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Quoting mikatnight:
Completely off topic, but feal I should post anyway, that according to an NBC report driving and texting causes twice the risk of a collision as driving drunk. Nearly 1/4 of all accidents in the US are now cell phone related...


At long last!!!!!! Drunk driving is finally getting some respect...
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tsunami_warning_system to Cover Carribean, 16 jan 05
Member Since: July 3, 2005 Posts: 423 Comments: 127810
Completely off topic, but feal I should post anyway, that according to an NBC report driving and texting causes twice the risk of a collision as driving drunk. Nearly 1/4 of all accidents in the US are now cell phone related...
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As I am following the 8.0 earthquake that took place today, there has also been a series of aftershocks (9 to be exact):


DATE LAT LON MAG DEPTH REGION
29-SEP-2009 21:51:00 -16.17 -172.53 4.9 10.0 SAMOA ISLANDS REGION
29-SEP-2009 21:28:56 -17.21 -173.00 5.0 10.0 TONGA ISLANDS
29-SEP-2009 18:57:58 -16.07 -173.12 5.2 10.0 TONGA ISLANDS
29-SEP-2009 18:46:02 -14.95 -173.33 5.0 10.0 SAMOA ISLANDS REGION
29-SEP-2009 18:40:11 -15.35 -173.30 5.4 10.0 TONGA ISLANDS
29-SEP-2009 18:34:29 -14.87 -172.49 5.1 10.0 SAMOA ISLANDS
29-SEP-2009 18:29:26 -15.95 -173.23 5.0 10.0 TONGA ISLANDS
29-SEP-2009 18:21:42 -16.20 -173.07 5.8 10.0 TONGA ISLANDS
29-SEP-2009 18:08:22 -15.47 -172.09 5.6 10.0 SAMOA ISLANDS REGION
29-SEP-2009 17:48:19 -15.56 -172.30 8.0 85.4 SAMOA ISLANDS REGION
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The preceding earthquake

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Tsunami Warning System:

Member Since: July 3, 2005 Posts: 423 Comments: 127810
14 dead and 50 injured according to a local reporter:

Link
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updated 42 min. ago from CNN
Link
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Hey Folks,
Anybody see PcolaDan or hear anything about his neighbor's kin in Vietnam?
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Quoting NRAamy:
um....another stupid question over here....I live on the coast in Southern Calif...do I need to get to higher ground?

:(
That's not a stupid question, shoot If I were living in Cali and there was a Tsunami heading that way I'd be out of town in a heartbeat. As far as I know all watches have been cancelled and any waves generated by the earthquake would have made it to shore by now and fizzled out. So you could breath a little easier, Amy. Hope this helps:)
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2004 December Boxing Day Tsunami Video

Member Since: July 3, 2005 Posts: 423 Comments: 127810
The real danger of tsunamis as oppose to other types of waves is that the "wall of water" does not appear until they reach the coast.

The reason being is that over open water the wave lengths are far part and the ocean remains deep and they can travel very fast with subtle signs. As they near the coast, the ocean floor cause them to slow down, while the waves behind continue at their respective speeds. This results in the wave behind piling up with the wave in front and so forth causing the wall of water we see as tsunamis.

I dont know what I would do if threaten by one - I live on an island.
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a wunderblog that has an excellent collection of earthquake links

Link
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Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.