High Pressure moving west

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logybogy

High Pressure moving west

#1 Postby logybogy » Fri Sep 24, 2004 2:31 am

Look at the orange almost at the coast of florida and to the south. The high pressure looks to be very strong to the west. Was this forecast accurately by the models?

Image
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#2 Postby yoda » Fri Sep 24, 2004 2:34 am

Wha? What does the orange have to do with the high pressure? The high is moving out east.. how is it retrogressing?
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#3 Postby logybogy » Fri Sep 24, 2004 2:36 am

Look at the water vapor loop.

http://www.ssd.noaa.gov/PS/TROP/DATA/RT ... -loop.html

There is absolutely no eastern component there. The flow is totally to the west.
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#4 Postby yoda » Fri Sep 24, 2004 2:38 am

logybogy wrote:Look at the water vapor loop.

http://www.ssd.noaa.gov/PS/TROP/DATA/RT ... -loop.html

There is absolutely no eastern component there. The flow is totally to the west.


All I see is the high moving east...
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#5 Postby logybogy » Fri Sep 24, 2004 2:40 am

Then what is that orange directly above and to the west of Jeanne moving west?

Isn't that high pressure?
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#6 Postby yoda » Fri Sep 24, 2004 2:43 am

logybogy wrote:Then what is that orange directly above and to the west of Jeanne moving west?

Isn't that high pressure?


Dry air.
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#7 Postby ericinmia » Fri Sep 24, 2004 2:55 am

When you are looking at a very high resolution image such as that floater, it makes it difficult to discern the actuall direction larger features that don't fit within the window are moving.

http://orca.rsmas.miami.edu/wximages/jet/1_05/anis.html

In that loop you can see that the high is moving slowly off to the east, pushed by the dip in the jetstream west of it.
High pressure ridges sping clockwise... thus when looking at a loop such as that floater, it would appear that the ridge was building westward, while in fact that motion you are seeing is actually just the wind pattern circleing the high pressure ridge.

Here is a wind map showing those afformentioned winds.
http://cimss.ssec.wisc.edu/tropic/real- ... 8v4km.html

Hope that helps some.
-Eric
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#8 Postby ericinmia » Fri Sep 24, 2004 2:58 am

logybogy, one thing that is happening that you may notice is that the ridge appears to be re-orienting itself from W to E, to more of a SW to NE. That is the push over florida that you see.

This would be bad news for florida if it were to persists, or deepen. It would cause Jeanne to head more west, if not a little wsw.
-Eric
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#9 Postby logybogy » Fri Sep 24, 2004 2:59 am

thanks eric, this helps me a lot.
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#10 Postby ericinmia » Fri Sep 24, 2004 3:02 am

no problem.

Those images get tricky to read sometimes.
If you supplement what your looking at with more than one source, it greatly helps identify features... and their motions.
-Eric
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#11 Postby yoda » Fri Sep 24, 2004 3:09 am

Ok.. thankd for clearing that up... logybogy... you may be right... sorry if I sounded like I was coming down on you.
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