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Webmaster
05-02-2007, 10:17 AM
There was an article today in The Tacoma News Tribune about a lahar alarm system set to trigger for events at Mt. Rainier. Does anyone know if Greenwater is part of this system and has alarms?

Holes remain in lahar warning system
New drill shows some sirens work, some fail
EIJIRO KAWADA; The News Tribune Published: May 2nd, 2007 01:00 AM

Two steps forward and one step back: That’s one way of describing Pierce County’s efforts to perfect its lahar warning system in the Puyallup Valley.

Such was the case Tuesday during a twice-yearly drill of the system designed to warn people about catastrophic volcanic mudflows from Mount Rainier.

Sirens that have failed to wail in the past went off Tuesday, but others installed recently remained silent during the drill.

The county also recently added the AM 1580 radio station to broadcast emergency messages, but the system failed to automatically switch to the prerecorded message during Tuesday’s test.

“That’s why we have these drills,” said Barbara Nelson, a spokeswoman for Pierce County Emergency Management.

Emergency officials began testing the system at 10 a.m.

For the first time, all five sirens in the City of Puyallup went off, much to the satisfaction of Puyallup Fire Chief Merle Frank.

However, two sirens in Orting and another in the McMillin area had problems, Nelson said. They were all new sirens that were tested for the first time Tuesday.

Orting has five sirens, and a new one at a water well in the south part of town failed to wail. Another siren at City Hall went off about half an hour after the system was activated, said Orting Mayor Cheryl Temple.

In the McMillin area, a siren at McAlder Elementary School failed to activate.

Officials are investigating what went wrong.

They also want to know what happened with the AM radio station, which usually carries information about disaster preparation and was supposed to switch to a test lahar warning.

Steve Bailey, director of Pierce County Emergency Management, said emergency officials can make the switch manually, as they did Tuesday.

For the past several years, Pierce County’s public safety agencies have been installing layers of emergency alerts in the fast-growing Puyallup Valley.

“We have been building the amount of redundancy so that we have many ways to inform people,” Bailey said.

Emergency officials installed monitors on Mount Rainier and 25 sirens down in the valley, from Orting to Fife. They also have been urging residents to buy a weather radio from the National Oceanic and Atmospheric Administration, which broadcasts emergency alerts.

Last year, Pierce County added a system called Intellicast, or “reverse 911.” It sends alerts to residential phones with a few clicks of a mouse from the county’s Emergency Operations Center, or from any 911 dispatch center in the county.

Intellicast also was tested Tuesday and it worked without a hitch, Bailey said. The phone system has proved itself in real emergencies, too, such as the Puyallup Valley flood last November.



Here's the article: http://www.thenewstribune.com/292/story/52780.html

engerski
05-04-2007, 09:09 PM
as of right now only the Orting/Sumner/Puyallup area has a Lahar warning system and road signs directing people to higher ground. Scientists seem to think that the west side of Rainier is the most likely to give way in an eruption. That may be so, but I think Greenwater should have a warning system. While the whole valley would be swept away, the ranch would get a double wammy at the confluence of the White and the Westfork of the White. Let's just hope we get a little early warning like they did at Mt. St. Helens. Any guesses who will be the Greenwater version of Mr. Truman?

Webmaster
05-07-2007, 10:59 PM
After seeing what a “mere” 18 inches of rain in short order has done to the roads and river basins, I think it a good idea to contact Pierce County Emergency Management (PCEM) and see what would be involved in adding Greenwater to this group.

Does anyone know someone involved with PCEM?

Unrelated to above is there a trail that leads to the confluence of the White and west fork of the White? I haven’t been in that area…

Webmaster
05-09-2007, 09:45 AM
I contacted the author of the article (above) and also found another article about this project. Following is an excerpt:

Mount Rainier is carefully monitored for signs of volcanic reawakening, and an eruption that could produce a catastrophic lahar initiated by vigorous release of meltwater is expected to follow days, weeks, or even months of readily detected symptoms of volcanic unrest. Thus, it is likely that there will be opportunity for citizens and communities to prepare for an impending eruption.

However, deposits of some of the large prehistoric lahars from Mount Rainier are rich in clay, implying that they contain abundant hydrothermally altered debris from within the volcano. Therefore, they are inferred to have originated as huge avalanches of water-saturated, clay-rich debris from massive gravity-driven failures of the volcano's flanks. Absence of geologic evidence substantiating coincidence of some of these large, clay-rich, prehistoric lahars with eruptions raises concern that some may have occurred with no attendant eruptive activity. They may have been triggered by intrusion of magma into the edifice, which would show symptoms like those observed before eruptions. On the other hand, they may have been triggered by earthquakes or hydrothermal-system explosions, or a volcano flank may simply have collapsed when it became sufficiently destabilized by progressing hydrothermal alteration. Such events could generate a massive lahar with no recognized precursory warning. A reliable lahar-warning system designed to detect such sudden events can provide notification to people downstream that a lahar is underway.

Here is the rest of the article: http://volcanoes.usgs.gov/About/Highlights/RainierPilot/Pilot_highlight.html

According to the article, the speed of mud flows from an event such as this could travel at up to about 50 mph.

pcfd26chief
05-13-2007, 01:55 PM
We discussed this topic at the FEMA "Are You Ready?" program that Greenwater Fire and the Sherriff's Department presented to the community earlier this spring. The Fire Department is developing a multi-hazard emergency preparedness plan for the community. The Pierce County DEM will have the completed plan on file, in order to speed up help from outside of the district as needed. We will continue to keep the community informed of upcoming training and information via flyers, the reader board, and this website. We hope to establish community phone trees and possibly a siren warning system. We have established preliminary evacuation plans for different hazards. We hope to have a community level presentation ready this year. The FEMA class that we presented in March covered individual and family based preparedness. This class was not well attended, so we may have to present it again in the future. I will keep you posted.

Webmaster
05-14-2007, 08:27 AM
Thanks for the post! Anything you can recommend that folks can do to encourage the powers that be (PCEM according to the article above) to include Greenwater in this plan?

Also I’d be happy to devote any space you’d like to this and other community related items.

Would it be possible to make voice recording of future presentations? Providing a digital voice recorder was used, I could post the presentation at this site.

It is possible that I could also do the same with digital video/audio but am unfamiliar with the space requirements for that.

Webmaster
06-21-2007, 05:42 PM
Overview about the Mt Rainier Lahar detection system pilot project

http://volcanoes.usgs.gov/About/Highlights/RainierPilot/Pilot_highlight.html