Educate me - clockwise vs counter clockwise storm motion

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robjay

Educate me - clockwise vs counter clockwise storm motion

#1 Postby robjay » Fri Jun 24, 2005 11:50 am

http://orca.rsmas.miami.edu/wximages/jet/1_05/anis.html
:?:
If you give the above link a look, you can see what appears to be UL winds steering storms in a clockwise motion, yet tropical storm events are counter clockwise. I'm trying to understand what would identify an ideal area of possible development in the above water vapor imagery? Are the "steering clockwise wind currents" a shear type force on tropical development?

Thanks -
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#2 Postby Brent » Fri Jun 24, 2005 12:02 pm

An Upper Level Low rotates clockwise...
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#3 Postby x-y-no » Fri Jun 24, 2005 12:10 pm

Brent wrote:An Upper Level Low rotates clockwise...


Ummm ... no. Unless you're in the southern hemisphere, that is.
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#4 Postby vbhoutex » Fri Jun 24, 2005 12:10 pm

Brent wrote:An Upper Level Low rotates clockwise...
???????????????????? :?: :?: :?: :?: :?: :?: Lows rotate counter-clockwise, highs rotate clockwise. It doesn't matter what leve they are at.
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Re: Educate me - clockwise vs counter clockwise storm motion

#5 Postby x-y-no » Fri Jun 24, 2005 12:19 pm

robjay wrote:http://orca.rsmas.miami.edu/wximages/jet/1_05/anis.html
:?:
If you give the above link a look, you can see what appears to be UL winds steering storms in a clockwise motion, yet tropical storm events are counter clockwise. I'm trying to understand what would identify an ideal area of possible development in the above water vapor imagery? Are the "steering clockwise wind currents" a shear type force on tropical development?

Thanks -


You're mixing up a number of things here.

First of all: steering flow. What layers affect the movement of a storm depends on how strong the storm is (you'll sometimes see this referred to as how "deep" it is). Weaker systems tend to be steered by the lower layers, stronger systems by more and more of the column. Upper level winds have the least effect on steering.

However, upper level wind do play a big part in how much convection a system has and how that convection is situated with respect to the low-level circulation (LLC). The ideal setup for a storm is to have an upper level high above it with flow away from that high on all sides.

A sheared situation, as we see with 94L in the Bahamas, for instance, causes the convection to be located on the downwind side (in 94L's case northeast of the disturbance's center) which inhibits development as low-level convergence does not correspond with the circulation center.

Hope that helps.

Jan
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#6 Postby Brent » Fri Jun 24, 2005 1:13 pm

vbhoutex wrote:
Brent wrote:An Upper Level Low rotates clockwise...
???????????????????? :?: :?: :?: :?: :?: :?: Lows rotate counter-clockwise, highs rotate clockwise. It doesn't matter what leve they are at.


:oops: I have no idea where that came from. Sorry everyone. I'm thinking of an ANTI-CYCLONE(which builds over hurricanes to help them strengthen).
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#7 Postby vbhoutex » Fri Jun 24, 2005 1:20 pm

Brent wrote:
vbhoutex wrote:
Brent wrote:An Upper Level Low rotates clockwise...
???????????????????? :?: :?: :?: :?: :?: :?: Lows rotate counter-clockwise, highs rotate clockwise. It doesn't matter what leve they are at.


:oops: I have no idea where that came from. Sorry everyone. I'm thinking of an ANTI-CYCLONE(which builds over hurricanes to help them strengthen).


That is what I thought you meant, but I didn't want to put words in your mouth.
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#8 Postby x-y-no » Fri Jun 24, 2005 1:22 pm

Brent wrote:
vbhoutex wrote:
Brent wrote:An Upper Level Low rotates clockwise...
???????????????????? :?: :?: :?: :?: :?: :?: Lows rotate counter-clockwise, highs rotate clockwise. It doesn't matter what leve they are at.


:oops: I have no idea where that came from. Sorry everyone. I'm thinking of an ANTI-CYCLONE(which builds over hurricanes to help them strengthen).


OK ... now all the rest of us get one free mess-up! :lol:

Jan
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#9 Postby vbhoutex » Fri Jun 24, 2005 1:23 pm

x-y-no wrote:
Brent wrote:
vbhoutex wrote:
Brent wrote:An Upper Level Low rotates clockwise...
???????????????????? :?: :?: :?: :?: :?: :?: Lows rotate counter-clockwise, highs rotate clockwise. It doesn't matter what leve they are at.


:oops: I have no idea where that came from. Sorry everyone. I'm thinking of an ANTI-CYCLONE(which builds over hurricanes to help them strengthen).


OK ... now all the rest of us get one free mess-up! :lol:

Jan


Just one? Man oh man am I in trouble!!!! :eek: :eek: :eek:
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#10 Postby dhweather » Fri Jun 24, 2005 2:46 pm

Brent wrote:
vbhoutex wrote:
Brent wrote:An Upper Level Low rotates clockwise...
???????????????????? :?: :?: :?: :?: :?: :?: Lows rotate counter-clockwise, highs rotate clockwise. It doesn't matter what leve they are at.


:oops: I have no idea where that came from. Sorry everyone. I'm thinking of an ANTI-CYCLONE(which builds over hurricanes to help them strengthen).


But an anti-cyclone OVER a cyclone can be a very good thing.
:D
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#11 Postby Brent » Fri Jun 24, 2005 2:52 pm

x-y-no wrote:
Brent wrote:
vbhoutex wrote:
Brent wrote:An Upper Level Low rotates clockwise...
???????????????????? :?: :?: :?: :?: :?: :?: Lows rotate counter-clockwise, highs rotate clockwise. It doesn't matter what leve they are at.


:oops: I have no idea where that came from. Sorry everyone. I'm thinking of an ANTI-CYCLONE(which builds over hurricanes to help them strengthen).


OK ... now all the rest of us get one free mess-up! :lol:

Jan


:roflmao:

I think everyone has one BIG screwup every now and then. Insert foot in mouth. :lol:
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#12 Postby Brent » Fri Jun 24, 2005 2:52 pm

dhweather wrote:
Brent wrote:
vbhoutex wrote:
Brent wrote:An Upper Level Low rotates clockwise...
???????????????????? :?: :?: :?: :?: :?: :?: Lows rotate counter-clockwise, highs rotate clockwise. It doesn't matter what leve they are at.


:oops: I have no idea where that came from. Sorry everyone. I'm thinking of an ANTI-CYCLONE(which builds over hurricanes to help them strengthen).


But an anti-cyclone OVER a cyclone can be a very good thing.
:D


I know. :wink:
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#13 Postby dhweather » Fri Jun 24, 2005 2:57 pm

Brent wrote:
dhweather wrote:
Brent wrote:
vbhoutex wrote:
Brent wrote:An Upper Level Low rotates clockwise...
???????????????????? :?: :?: :?: :?: :?: :?: Lows rotate counter-clockwise, highs rotate clockwise. It doesn't matter what leve they are at.


:oops: I have no idea where that came from. Sorry everyone. I'm thinking of an ANTI-CYCLONE(which builds over hurricanes to help them strengthen).


But an anti-cyclone OVER a cyclone can be a very good thing.
:D


I know. :wink:


Well, MAKE IT HAPPEN! :D

Sheesh, I'm sick of trofs and ULL's
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#14 Postby Brent » Fri Jun 24, 2005 2:57 pm

dhweather wrote:
Brent wrote:
dhweather wrote:
Brent wrote:
vbhoutex wrote:
Brent wrote:An Upper Level Low rotates clockwise...
???????????????????? :?: :?: :?: :?: :?: :?: Lows rotate counter-clockwise, highs rotate clockwise. It doesn't matter what leve they are at.


:oops: I have no idea where that came from. Sorry everyone. I'm thinking of an ANTI-CYCLONE(which builds over hurricanes to help them strengthen).


But an anti-cyclone OVER a cyclone can be a very good thing.
:D


I know. :wink:


Well, MAKE IT HAPPEN! :D

Sheesh, I'm sick of trofs and ULL's


It will come Late August and September. :eek:
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