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#Kirk did not live long and prosper, for now. However #98L is likely undergoing TC Genesis and may succeed. Carolinas may want to watch.
Days since last H. Landfall - US: Any 11 (Florence) , Major: 370 (Maria) Florida - Any: 380 (Irma) Major: 380 (Irma)
31.6N 44.4W
Wind: 35MPH
Pres: 1007mb
Moving:
E at 12 mph
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Archives 2000s >> 2005 News Talkbacks

Clark
Meteorologist


Reged: Wed
Posts: 1710
Re: Happy New Year -- from Zeta!?!
      Wed Jan 04 2006 02:01 AM

What Lixion's getting at with the "trough interaction aiding intensification" -- hopefully in layman's terms -- is that if the trough is of the right size and distance from the storm, it can interact constructively with the storm, whether via enhanced outflow (more often an upper-low), superposition (almost always an upper trough and not a cutoff upper-low), or some other unknown technique. Usually, the narrower (in width/scale) of the trough, the more likely that it is going to match the width/scale of the tropical system and be able to enhance development. This most often is via baroclinic enhancement leading to an enhancement of the processes that lead to tropical development -- maybe I'll go into the nuts and bolts of it later in the winter, but I'm too drained this evening (anyone who watched the football game tonight will know why!), so my apologies. Generally accompanying this interaction is a reduction in the negative impacts of the trough, primarily shear. Elena from 1985 in the NE Gulf is the best-known case and there is a lot of research out in the field about that one...I'm pretty familiar with it, so if anyone has any further questions about this process, please feel free to ask!

These trough interactions generally tend to aid moderate tropical storms to weak hurricanes, allowing them to reach up to borderline category 2/3 intensity (although this high end isn't reached that often). The other type, briefly alluded to above, occurs when you get upper-lows distant from the storm that aid in enhancing outflow. We saw that several times this year -- Rita is the best case, but Katrina and Wilma had it too -- and is most often seen with major hurricanes, allowing them to reach higher intensities than they might otherwise. Generally accompanying these situations is a strong upper-ridge building over a very deep circulation, further enhancing the favorable environment. Such an environment is generally pretty resilient to change, leading to eyewall cycles being big.

Of course, Zeta here is a case of the former rather than the latter. Hope this helps clear it up a tad.

--------------------
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Entire topic
Subject Posted by Posted on
* Happy New Year -- from Zeta!?! Clark Wed Jan 04 2006 02:01 AM
. * * Re: Happy New Year -- from Zeta!?! Lee-Delray   Thu Jan 05 2006 10:37 AM
. * * Re: Happy New Year -- from Zeta!?! Randrew   Thu Jan 05 2006 11:21 AM
. * * Re: Happy New Year -- from Zeta!?! Spoken   Tue Jan 03 2006 04:43 AM
. * * Re: Happy New Year -- from Zeta!?! Random Chaos   Tue Jan 03 2006 09:27 AM
. * * Re: Happy New Year -- from Zeta!?! ltpat228   Tue Jan 03 2006 04:37 PM
. * * Re: Happy New Year -- from Zeta!?! Allison   Tue Jan 03 2006 04:45 PM
. * * Re: Happy New Year -- from Zeta!?! Lee-Delray   Tue Jan 03 2006 05:59 PM
. * * Re: Happy New Year -- from Zeta!?! ltpat228   Tue Jan 03 2006 08:23 PM
. * * Re: Happy New Year -- from Zeta!?! eduardo sanchez   Tue Jan 03 2006 05:54 PM
. * * Re: Happy New Year -- from Zeta!?! Margie   Tue Jan 03 2006 06:10 PM
. * * Re: Happy New Year -- from Zeta!?! Randrew   Tue Jan 03 2006 09:06 PM
. * * Re: Happy New Year -- from Zeta!?! Random Chaos   Tue Jan 03 2006 09:30 PM
. * * Re: Happy New Year -- from Zeta!?! Margie   Tue Jan 03 2006 09:49 PM
. * * Re: Happy New Year -- from Zeta!?! Clark   Wed Jan 04 2006 02:01 AM
. * * Re: Happy New Year -- from Zeta!?! Margie   Wed Jan 04 2006 11:45 AM
. * * Zeta!?! danielwAdministrator   Wed Jan 04 2006 03:13 AM
. * * Re: Zeta!?! Margie   Wed Jan 04 2006 12:28 PM
. * * Re: Zeta!?! Clark   Wed Jan 04 2006 12:47 PM
. * * Goodbye Zeta and, finally, 2005 Margie   Wed Jan 04 2006 01:53 PM
. * * Re: Goodbye Zeta and, finally, 2005 Randrew   Thu Jan 05 2006 04:17 AM
. * * Re: Goodbye Zeta and, finally, 2005 Randrew   Thu Jan 05 2006 04:25 AM
. * * Re: Goodbye Zeta and, finally, 2005 eduardo sanchez   Wed Jan 04 2006 06:04 PM
. * * Re: Goodbye Zeta and, finally, 2005 Margie   Wed Jan 04 2006 06:15 PM
. * * Re: Goodbye Zeta and, finally, 2005 Random Chaos   Wed Jan 04 2006 08:13 PM
. * * [Jaws music] Margie   Wed Jan 04 2006 09:09 PM
. * * Re: [Jaws music] Clark   Thu Jan 05 2006 02:27 AM
. * * Re: [Jaws music] Margie   Thu Jan 05 2006 11:48 AM
. * * Re: [Jaws music] Frog   Thu Jan 05 2006 01:23 PM
. * * Re: [Jaws music] Margie   Thu Jan 05 2006 01:57 PM
. * * Are we there yet? Margie   Thu Jan 05 2006 02:19 PM
. * * Re: Are we there yet? Randrew   Thu Jan 05 2006 03:25 PM
. * * Re: Are we there yet? eduardo sanchez   Thu Jan 05 2006 04:37 PM
. * * Re: Are we there yet? Frog   Thu Jan 05 2006 05:32 PM
. * * Re: Are we there yet? Lee-Delray   Thu Jan 05 2006 04:57 PM
. * * Re: [Jaws music] Randrew   Thu Jan 05 2006 04:31 AM
. * * Re: [Jaws music] Frog   Thu Jan 05 2006 06:03 AM
. * * Re: [Jaws music] Randrew   Thu Jan 05 2006 10:37 AM
. * * Re: [Jaws music] Clark   Thu Jan 05 2006 01:23 PM
. * * Re: [Jaws music] Domino   Thu Jan 05 2006 05:06 PM
. * * Re: [Jaws music] Clark   Thu Jan 05 2006 05:26 PM
. * * Re: [Jaws music] Frog   Thu Jan 05 2006 06:52 PM
. * * Re: [Jaws music] Clark   Thu Jan 05 2006 08:24 PM
. * * Re: [Jaws music] HanKFranK   Thu Jan 05 2006 11:12 PM
. * * Re: [Jaws music] Not Logged MM   Fri Jan 06 2006 11:28 AM
. * * Brazilian Blob Randrew   Fri Jan 06 2006 12:35 PM
. * * Re: Brazilian Blob HanKFranK   Fri Jan 06 2006 02:03 PM
. * * 2005 Hurricane Season Almost OVER! Storm Hunter   Fri Jan 06 2006 03:28 PM
. * * Ok, everybody...big collective sigh! Margie   Fri Jan 06 2006 03:51 PM
. * * Interesting Season Randrew   Fri Jan 06 2006 04:42 PM
. * * Re: [Jaws music] Random Chaos   Wed Jan 04 2006 11:13 PM
. * * Re: Happy New Year -- from Zeta!?! CaneTrackerInSoFl   Tue Jan 03 2006 09:57 PM
. * * Re: Happy New Year -- from Zeta!?! Margie   Tue Jan 03 2006 11:04 PM
. * * Re: Happy New Year -- from Zeta!?! Randrew   Tue Jan 03 2006 09:45 PM
. * * Re: Happy New Year -- from Zeta!?! Margie   Tue Jan 03 2006 10:59 AM
. * * Re: Happy New Year -- from Zeta!?! Doombot!   Sun Jan 01 2006 02:09 PM
. * * Re: Happy New Year -- from Zeta!?! HanKFranK   Sun Jan 01 2006 03:54 PM
. * * Re: Happy New Year -- from Zeta!?! Margie   Sun Jan 01 2006 05:41 PM
. * * Re: Happy New Year -- from Zeta!?! Random Chaos   Mon Jan 02 2006 08:38 PM
. * * Re: Happy New Year -- from Zeta!?! Margie   Mon Jan 02 2006 09:03 PM
. * * Re: Happy New Year -- from Zeta!?! Clark   Mon Jan 02 2006 10:59 PM
. * * Re: Happy New Year -- from Zeta!?! Goosus   Tue Jan 03 2006 01:15 AM
. * * Re: Happy New Year -- from Zeta!?! UKCloudgazer   Tue Jan 03 2006 03:53 AM
. * * Re: Happy New Year -- from Zeta!?! CaneTrackerInSoFl   Mon Jan 02 2006 09:57 PM
. * * Re: Happy New Year -- from Zeta!?! emackl   Fri Dec 30 2005 01:41 PM
. * * Re: Happy New Year -- from Zeta!?! ChessieStorm   Fri Dec 30 2005 01:44 PM
. * * Re: Happy New Year -- from Zeta!?! Jenny   Fri Dec 30 2005 03:14 PM
. * * Re: Happy New Year -- from Zeta!?! Margie   Fri Dec 30 2005 03:54 PM
. * * Re: Happy New Year -- from Zeta!?! eduardo sanchez   Fri Dec 30 2005 04:40 PM
. * * Re: Happy New Year -- from Zeta!?! Frog   Sat Dec 31 2005 05:56 AM
. * * Re: Happy New Year -- from Zeta!?! *DELETED* eduardo sanchez   Sat Dec 31 2005 06:18 AM
. * * Re: Happy New Year -- from Zeta!?! Random Chaos   Sat Dec 31 2005 09:50 AM
. * * Re: Happy New Year -- from Zeta!?! HanKFranK   Sat Dec 31 2005 12:27 PM
. * * Re: Happy New Year -- from Zeta!?! Margie   Sat Dec 31 2005 02:40 PM
. * * Re: Happy New Year -- from Zeta!?! HanKFranK   Sat Dec 31 2005 11:10 PM
. * * Re: Happy New Year -- from Zeta!?! Clark   Sun Jan 01 2006 01:59 AM
. * * Re: Happy New Year -- from Zeta!?! Doombot!   Sun Jan 01 2006 02:24 AM
. * * Re: Happy New Year -- from Zeta!?! eduardo sanchez   Sun Jan 01 2006 09:13 AM
. * * Re: Happy New Year -- from Zeta!?! Rich B   Sun Jan 01 2006 06:47 AM
. * * Modern Marvels TDW   Sun Jan 01 2006 08:56 AM
. * * Re: Happy New Year -- from Zeta!?! Random Chaos   Sun Jan 01 2006 12:54 AM
. * * Re: Happy New Year -- from Zeta!?! Random Chaos   Fri Dec 30 2005 07:00 PM
. * * Re: Happy New Year -- from Zeta!?! Margie   Fri Dec 30 2005 07:44 PM
. * * Re: Happy New Year -- from Zeta!?! Clark   Fri Dec 30 2005 10:08 PM
. * * Zeta, we hardly knew ya Margie   Fri Dec 30 2005 11:12 PM
. * * Re: Happy New Year -- from Zeta!?! Clark   Fri Dec 30 2005 11:15 PM
. * * Re: Happy New Year -- from Zeta!?! Multi-Decadal Signal   Sat Dec 31 2005 04:22 AM
. * * Re: Happy New Year -- from Zeta!?! ltpat228   Sat Dec 31 2005 12:34 PM
. * * Re: Happy New Year -- from Zeta!?! Hugh   Sat Dec 31 2005 01:03 PM
. * * Re: Happy New Year -- from Zeta!?! eduardo sanchez   Sat Dec 31 2005 05:25 AM
. * * Re: Happy New Year -- from Zeta!?! Margie   Fri Dec 30 2005 11:19 PM
. * * Re: Happy New Year -- from Zeta!?! Random Chaos   Fri Dec 30 2005 11:54 AM
. * * Re: Happy New Year -- from Zeta!?! CaneTrackerInSoFl   Fri Dec 30 2005 12:45 PM

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