On Dec 21, 2:18 pm, Weatherlawyer wrote:
On Dec 21, 8:25 am, Weatherlawyer wrote:



2007/12/21 07:24
6.1 :36 ANDREANOF ISLANDS, ALEUTIAN IS., ALASKA.http://earthquake.usgs.gov/eqcenter/...quakes_big.php

Those Highs seem easily capable of crossing the US in a day and an
half to two days. So expect another 2 or 3 more Magnitude 6 quakes
before the next spell.

As you can see there is a major problem uising this method to forecast
earthquakes. First off there is the scope of the chart.

It aught to cover at least 120 degrees

A greater problem for exactitude is that these regions defined on
charts as dartboards of air pressure are not real manifestations of
what is really happening. In the first place they are only considering
a sharply defined location.

The contours are made up of lines of similar pressure from data
supplied by a huge background of weather centres. But these are only
situated on land. There are some weather ships supplying data for
important areas. But they are by nature transitory.

And when a region leaves the shores it isn't extended out to sea. It
can't be and it doesn't fit the method.

They are drawing lines connecting data from a limited number of data
centres after all. And that is why after a major quake you will see
that the chart bears little resemblance to the one immediately prior
to it.

Not that one is a cause of the other. Just two symptoms of a malaise
that stops weather models providing reasonable values over 3 to 5
days. I imagine that the same is true for data that covers half the
planet.

The upper atmosphere.