Home |
Search |
Today's Posts |
![]() |
|
alt.talk.weather (General Weather Talk) (alt.talk.weather) A general forum for discussion of the weather. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#11
![]() |
|||
|
|||
![]()
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 of the planet and most of the hemisphere. Just having Canada and Mexico included would be a big help. With them included, the Atlantic Chart can become more transparent. |
#12
![]() |
|||
|
|||
![]()
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. |
#13
![]() |
|||
|
|||
![]()
On Dec 17, 6:44 pm, Weatherlawyer wrote:
Me glad me not him On Dec 17, 5:47 pm, Saint Isadore Patron Saint of snip Meanwhile on planet ZOG: As far as looking at the USA map and for that matter High Pressure, this stuff is as new to me as it is to you lot. One of the first things I noticed decades ago was that the weather in the North Atlantic held severe Lows off almost as if "at bay" fending them off until their appointed time. I was working with microfiches of daily newspapers in public libraries. All I had available to me then. I began to suspect that a force was building up, for I could see that when the Low went ashore usually at Norway or Scotland there was either a severe earthquake or reports of some other terrible thing in the same papers. The only other data I had access to was the weather reports on the radio. They used to be excellent and I could do wonderful things with them even then. http://groups.google.com/group/uk.sc...a441128acfa9e9 I was also working on astronomical stuff about the moon and etc., at the same time. Trying to fit it all in. Obviously they are going to tell me the same thing if they are related. In fact all earthquake forecasting methods must have a lot in common no matter how far from obvious that commonality is. But air pressure is dispersed throughout the columns and there is no real weight above or below normal on the earth itself. If there is, what is it? 50 millibars either side of average? Call it 100mb or 35 inches in a column of mercury that could reach 32 inches. What's that? 5/32 of about 15 lbs per square inch. More than that falls on the earth with a heavy shower. More than that; -hundreds of times more, with each tide. But tides come in and out regularly. Quakes are not regular are they? And on top of the tides lie the waves. Imagine the weight travelling across the planet on each swell. Some of them 40 and 50 feet high. (Accompanied by 40 and 50 foot troughs.) I don't like to assert a cause when I plainly don't know exactly what is happening. But I am pretty sure it is not air pressure or tides. But even if I get it wrong and that could happen, it is early days yet |
#14
![]() |
|||
|
|||
![]()
On Dec 21, 2:18 pm, Weatherlawyer wrote:
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. All the highs are gone now from the States, replaced by deepening lows. One of which is heading out to the wide blue yonder off Florida. Interesting as the thing might have gone harmlessly north through Canada to Greenland. I wonder what happens next. |
#15
![]() |
|||
|
|||
![]()
On Dec 21, 11:48 pm, Weatherlawyer wrote:
All the highs are gone now from the States, replaced by deepening lows. One of which is heading out to the wide blue yonder off Florida. Interesting as the thing might have gone harmlessly north through Canada to Greenland. I wonder what happens next. 2007/12/22 6.6 NEAR THE NORTH COAST OF PAPUA, INDONESIA Of course this is overlooking the yet unmentioned problem of deciphering which did what on a synoptic plot. Was this quake related to a Low pressure area in or just off the USA? How do I prove it? I don't need to. If the cap fits, wear it. All I am looking for is some correspondence. And these air columns work. Maybe all the air columns that cross the continental shelves of this world are significant indicators. Who can say not? Here is a chart I should be happy with: Dial up: http://www.weatheroffice.gc.ca/data/...s/jac00_50.gif Broadband: http://www.weatheroffice.gc.ca/data/.../jac00_100.gif The last one takes up 37 inches across a 15 1/2 inch screen. So I should be pleased with the detail, except I can't sea the shore lines. It's no big deal really, the lower resolution one only overlaps by 2 inches or so. But the shoreline s less distinguishable. This one is much worse: http://www.weatheroffice.gc.ca/data/...is/947_100.gif Try the less anal surface: http://www.weatheroffice.gc.ca/data/analysis/947_50.gif |
#16
![]() |
|||
|
|||
![]()
There is a huge number of Highs filling western USA from the coast to
the Continental Divide, the watershed of North America. Looks like we could be in for a spell of Mag 6's. They will have to be quick though as the next spell (on the 24th) is a wet one. And that could keep the high pressure areas in situ. (IIRC California (for one western state) has a dry spell when we have wet- uns.) We shall see, no? Meanwhile, we had a little drizzle this afternoon. So there. |
#17
![]() |
|||
|
|||
![]()
On Dec 22, 10:57 pm, Weatherlawyer wrote:
There is a huge number of Highs filling western USA from the coast to the Continental Divide. Meanwhile, we had a little drizzle this afternoon. And the "Blocking High" extending from Northern Europe to the east of Britain has broken. It's actually due to slide off down the east coast of the Atlantic: http://meteonet.nl/aktueel/brackall.htm Which will leave the way open for a Low off Iceland to get to Norway. So we should see a fairly large magnitude quake for that. (Though it is slated to hit Svalbard, an island in the Arctic, on Tuesday according to the above link. I dare say things will have changed radically by Tuesday.) It will be interesting to see if the first of those US Highs reaches the coast before then. One in Texas is well on its way already. |
#18
![]() |
|||
|
|||
![]()
On Dec 23, 2:44 am, Weatherlawyer wrote:
(Though it is slated to hit Svalbard, an island in the Arctic, on Tuesday according to the above link. I dare say things will have changed radically by Tuesday.) Looks like things have changed there already. Pity I wasn't saving images of that. I shall start today. Sounds boring. It will be interesting to see if the first of those US Highs reaches the coast before then. One in Texas is well on its way already. Looks like that has stabilised too. Here is the new site of the moment: If someone could just convince the Canucks to shade in landmasses, it really would be a gem. http://www.weatheroffice.gc.ca/ensem...me=00&Type=pnm |
#19
![]() |
|||
|
|||
![]()
Looks like we are due another Mag 6 before the day is out. If it is a
6.2 or 3, I dedicate it to my good fiend Felix Icky. http://weather.unisys.com/ |
#20
![]() |
|||
|
|||
![]()
On Dec 23, 2:21 pm, Weatherlawyer wrote:
Looks like we are due another Mag 6 before the day is out. If it is a 6.2 or 3, I dedicate it to my good fiend Felix Icky. http://weather.unisys.com/ Here we go, the world's first named earthquake; Any minute now. |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|