This is most of the text of an Earthquake Warning Update that was just posted to the sci.geo.earthquakes Internet Newsgroup.

This report pertains to the Internet Newsgroup Earthquake Warning
posted on December 1, 2009. These are personal opinions.

The possible approaching earthquake discussed in that warning was
expected to be quite powerful. As far as I have been able to determine, it
has not yet occurred.

EXPECTED EARTHQUAKE OCCURRENCE TIME WINDOWS

The computer program technology being used to generate the data for
these earthquake warnings became fully operational within just the past few
months. The program code and data evaluation routines are quite complex.
The computer programs are still being improved on at least a weekly basis.
And presently, only a limited amount of time is available for learning how
to actually interpret the data.

So far it appears that when strong earthquake fault zone related
electromagnetic pulses (EM Signals) are detected or when groups of those
signals are detected during a period of several days, very roughly, 50% of
the time the expected earthquake will occur within a few days to as much as
a week. The other 50% of the time the earthquake can be delayed by as long
as several months. Delays involving multiples of 7 days appear to be most
common.

Data related to those delay times for earthquakes and EM Signals
going back to the beginning of 2001 can be found in the Year Chart files on
the following Web page:

http://www.Freewebz.com/eq-forecasting/Year_Charts.html
Efforts are underway to learn how to better evaluate the data in
order to generate more precise warning time windows. At the moment, the
best approach for circulating earthquake warnings and advisories appears to
be the following:

1. When the EM Signal data suggest that a significant earthquake could be
approaching, a warning or advisory is being circulated. Then in theory
anyway, half the time it will be a timely warning. The other half of the
time the approaching earthquake will likely generate additional strong EM
Signals before it occurs. And updates for the warning can be circulated.

2. When a warning or advisory is circulated, earthquake researchers around
the world are being advised to check various areas for easily observed local
earthquake precursors. If none are observed in some suspect area at around
the same time that the EM Signals were detected then it is probably safe to
assume that the earthquake will occur elsewhere. Or it will at least occur
at some more distant future date at that location.

http://www.Freewebz.com/eq-forecasting/Data.html<
People interested in this subject matter can visit that Web page and
use the viewers on the page to scroll down to "Chart G." (And it should be
remembered that those data will likely move off the Charts at the time of
the next update.)

In the present Chart G the dates of some strong EM Signals detected
in late September of 2009 can be seen. They were soon followed by
destructive earthquakes in the Samoa and Indonesia areas that reportedly
claimed something like a thousand lives. The tremendously powerful Samoa
earthquake actually occurred about 12 minutes after one of those signals was
detected.

So, those EM Signals appear to have been an example of the 50% group
where the expected earthquake or earthquakes did occur shortly after the EM
Signals were detected. And unfortunately, although quite a few E-mail
notices were circulated in September and October regarding the EM Signals,
the computer programs being used to generate these data were not yet
operational. I did not have any location data that I could point to. And I
did not try to post warnings to any Newsgroups or to the following
EarthWaves bulletin board where earthquake warnings are now being discussed:

http://www.earthwaves.org/wwwboard/wwwboard.html<
COMMENTS

If these earthquake warning time windows are accurate 50% of the
time, then with some luck, earthquake researchers around the world might be
able to occasionally observe local earthquake precursors, alert government
and disaster mitigation officials, get people living in the area prepared
for the earthquake, get disaster mitigation groups ready to quickly respond
once it occurs, and hopefully save some lives.

Interested parties can read the notes under the EQF heading at that
EarthWaves bulletin board for updates to these earthquake warnings and
advisories. And when 6 and above magnitude earthquakes occur people can
examine the various Charts etc. on my Data.html Web page in order to see if the latest Chart A data or any recent EM Signals shown on the other Charts matched the earthquake.

The Chart viewers on that Web page are gradually being improved so that the data can be more easily and accurately evaluated. Charts and Maps at the Web site are being updated as time permits.