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Ivan with Double Eyewalls? Weakens a bit
      Thu Sep 09 2004 04:56 PM

11PM
Ivan is holding at a category 4 level for now. The track remains very similar to the 5PM. The current forecast track has it skirting along the west coast of Florida into the big bend, but again even a slight error really can change this.

The good news is that shear is expected to develop so we may have another storm that weakens right before any landfall, but the otuflow is so good right now, it may not weaken as much as I'd hope. Intensity forecasts are by far the most prone to error, and this will have to be watched.

Original Update
Hurricane Ivan is back to Category 4, after an impressive run earlier today as a category 5.

It's expected to fluctuate in intensity, and again, the forecast track has moved a bit to the left. However the longer term forecast is still quite uncertain. It will be interesting to watch the model trends.



It may be going through a double eyewall cycle, which would explain the weaker winds. This would allow it to restrengthen once again once this cycle is over.

XML Current Storm Positions are now available at this link.

Also, Tropical depression 10 has already came and went, it's now has dissipated.

More to come later today.

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Event RelatedLinks
Stormcarib personal reports from Jamaica
Ivan Models -- This image animated over time
Ivan Spaghetti Model from Hurricanealley/boatus (Working Link)
Weather Underground Model Plots for Ivan
The Caribbean Hurricane Page - updates from the islands
Caribbean Island Weather Reports
Nice color satellite image
Animated Color Ivan Satellite (With NHC Track Overlay)
(Animated Version)
High Speed Satellite Loops (Click floater)
Forecast Discussions for (Show All Locations):
Tampa. Miami, Key West, Tallahassee.
Melbourne
Hurricane Local Statements for Weather Offices in:
Key West (Florida Keys)Long Range Radar Loop

General Links
Skeetobite's storm track maps
Current Aircraft Recon Info

NRL Monterey Marine Meteorology Division Forecast Track of Active Systems (Good Forecast Track Graphic and Satellite Photos)

Check the Storm Forum from time to time for comments on any new developing system.

Follow worldwide SST evolution here:

Global SST Animation

NASA GHCC Interactive Satellite images at:

North Atlantic Visible (Daytime Only), Infrared, Water Vapor
LSU Sat images

Some forecast models:
NGM, AVN, MRF, ETA ECMWF
AVN, CMC, GFDL, JMA, NOGAPS, UKMET

DoD Weather Models (NOGAPS, AVN, MRF)

Multi-model plots from WREL
Other commentary at Independentwx.com, Robert Lightbown/Crown Weather Tropical Update Accuweather's Joe Bastardi (now subcriber only unfortunately), Hurricane Alley North Atlantic Page, HurricaneVille, Cyclomax (Rich B.), Hurricane City , mpittweather , WXRisk, Gary Gray's Millennium Weather, storm2k, Barometer Bob's Hurricane Hollow, Snonut,

Even more on the links page.

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Entire topic
Subject Posted by Posted on
* Ivan with Double Eyewalls? Weakens a bit MikeCAdministrator Thu Sep 09 2004 04:56 PM
. * * Thanks Sadie   Fri Sep 10 2004 12:17 AM
. * * Re: Ivan with Double Eyewalls? Weakens a bit captgene   Thu Sep 09 2004 11:26 PM
. * * Re: Ivan with Double Eyewalls? Weakens a bit captgene   Thu Sep 09 2004 10:54 PM
. * * Re: Ivan with Double Eyewalls? Weakens a bit/where this crap going? slwfreez   Thu Sep 09 2004 09:03 PM
. * * Re: Ivan with Double Eyewalls? Weakens a bit Bioman   Thu Sep 09 2004 08:29 PM
. * * Re: Ivan with Double Eyewalls? Weakens a bit BeachBum   Thu Sep 09 2004 10:49 PM
. * * Re: Ivan with Double Eyewalls? Weakens a bit Bioman   Thu Sep 09 2004 11:22 PM
. * * Re: Ivan with Double Eyewalls? Weakens a bit kelcot   Thu Sep 09 2004 10:57 PM
. * * Re: Ivan with Double Eyewalls? Weakens a bit kelcot   Thu Sep 09 2004 08:33 PM
. * * Re: Ivan with Double Eyewalls? Weakens a bit okiherdu   Thu Sep 09 2004 07:17 PM
. * * Map update SkeetoBiteAdministrator   Thu Sep 09 2004 05:36 PM
. * * Re: Ivan with Double Eyewalls? Weakens a bit Clark   Thu Sep 09 2004 05:11 PM
. * * For what it's worth... Clark   Thu Sep 09 2004 09:14 PM
. * * Re: For what it's worth... Rasvar   Thu Sep 09 2004 09:24 PM
. * * Re: For what it's worth... wezman1   Thu Sep 09 2004 09:28 PM
. * * Re: For what it's worth... MrSpock   Thu Sep 09 2004 09:34 PM
. * * Re: For what it's worth... Clark   Thu Sep 09 2004 09:29 PM
. * * Supplies in Manatee County Gone Bev   Thu Sep 09 2004 09:39 PM
. * * Re: Supplies in Manatee County Gone Clark   Thu Sep 09 2004 09:50 PM
. * * Re: Supplies in Manatee County Gone robynsmom   Thu Sep 09 2004 11:16 PM
. * * Re: Supplies in Manatee County Gone kelcot   Thu Sep 09 2004 09:58 PM
. * * Hmmmm StormHound   Thu Sep 09 2004 10:08 PM
. * * Re: Hmmmm Clark   Thu Sep 09 2004 10:22 PM
. * * Re: Hmmmm Rasvar   Thu Sep 09 2004 10:41 PM
. * * Re: Hmmmm BillD   Thu Sep 09 2004 10:47 PM
. * * Re: Hmmmm scottsvb1   Thu Sep 09 2004 10:44 PM
. * * Scottsvb StormHound   Thu Sep 09 2004 11:06 PM
. * * Re: Scottsvb StormHound   Thu Sep 09 2004 11:09 PM
. * * Re: Hmmmm BillD   Thu Sep 09 2004 10:52 PM
. * * Re: Hmmmm MikeCAdministrator   Thu Sep 09 2004 10:55 PM
. * * S.E. Fla in the clear based upon Spagetti? MIAMIFL   Thu Sep 09 2004 10:51 PM
. * * Re: S.E. Fla in the clear based upon Spagetti? Clark   Thu Sep 09 2004 11:06 PM
. * * Re: S.E. Fla in the clear based upon Spagetti? MikeCAdministrator   Thu Sep 09 2004 11:15 PM
. * * Maps SkeetoBiteAdministrator   Thu Sep 09 2004 11:22 PM
. * * Re: Maps Bev   Fri Sep 10 2004 01:12 AM
. * * Re: Maps rule   Thu Sep 09 2004 11:42 PM
. * * Re: Maps belleami   Thu Sep 09 2004 11:53 PM
. * * Re: Maps Bev   Fri Sep 10 2004 01:05 AM
. * * Re: Lived in Florida BeachBum   Fri Sep 10 2004 12:12 AM
. * * Re: Maps Terry Johnson   Thu Sep 09 2004 11:59 PM
. * * Re: Maps Wxwatcher2   Thu Sep 09 2004 11:34 PM
. * * Re: Maps Colleen A.   Fri Sep 10 2004 12:23 AM
. * * Re: Maps SirCane   Fri Sep 10 2004 12:36 AM
. * * Re: Maps mud1967   Fri Sep 10 2004 01:00 AM
. * * Re: Maps ewilby   Fri Sep 10 2004 01:24 AM
. * * Re: Maps Colleen A.   Fri Sep 10 2004 01:08 AM
. * * Re: Maps mud1967   Fri Sep 10 2004 01:21 AM
. * * Re: Maps Colleen A.   Fri Sep 10 2004 01:43 AM
. * * Re: Maps mud1967   Fri Sep 10 2004 01:56 AM
. * * Re: Maps Colleen A.   Fri Sep 10 2004 02:08 AM
. * * Tampa Bay Area - Flood Waters Bev   Fri Sep 10 2004 02:02 AM
. * * Re: Maps scottsvb1   Fri Sep 10 2004 12:44 AM
. * * Re: Maps meto   Thu Sep 09 2004 11:44 PM
. * * Re: The Layout javlin   Fri Sep 10 2004 12:06 AM
. * * Re: The Layout SirCane   Fri Sep 10 2004 12:18 AM
. * * Re: Accu wx javlin   Fri Sep 10 2004 12:33 AM
. * * Re: Maps SirCane   Thu Sep 09 2004 11:27 PM
. * * Re: Maps juniorgirl   Thu Sep 09 2004 11:52 PM
. * * Re: Maps scottsvb1   Thu Sep 09 2004 11:29 PM
. * * Re: Maps sullynole   Thu Sep 09 2004 11:33 PM
. * * Tired of hurricanes... Clark   Thu Sep 09 2004 11:09 PM
. * * Re: Tired of hurricanes... mud1967   Fri Sep 10 2004 12:17 AM
. * * Re: Tired of hurricanes... Clark   Fri Sep 10 2004 12:21 AM
. * * Re: Tired of hurricanes... mud1967   Fri Sep 10 2004 12:48 AM
. * * Re: Tired of hurricanes... andy1tom   Thu Sep 09 2004 11:50 PM
. * * Re: Tired of hurricanes... Wxwatcher2   Fri Sep 10 2004 01:26 AM
. * * Re: Tired of hurricanes... BillD   Fri Sep 10 2004 12:31 AM
. * * Re: Tired of hurricanes... Clark   Fri Sep 10 2004 12:19 AM
. * * Re: Tired of hurricanes... andy1tom   Fri Sep 10 2004 12:24 AM
. * * Re: Tired of hurricanes... wxman007   Fri Sep 10 2004 12:35 AM
. * * Re: Tired of hurricanes... andy1tom   Fri Sep 10 2004 12:42 AM
. * * Re: Tired of hurricanes... Kimster   Fri Sep 10 2004 12:41 AM
. * * Re: Tired of hurricanes... wxman007   Fri Sep 10 2004 12:54 AM
. * * Re: Tired of hurricanes... mud1967   Fri Sep 10 2004 01:09 AM
. * * Re: Tired of hurricanes... ewilby   Fri Sep 10 2004 01:34 AM
. * * Re: Tired of hurricanes... Colleen A.   Fri Sep 10 2004 01:49 AM
. * * Re: Tired of hurricanes... Sissy   Fri Sep 10 2004 01:52 AM
. * * Model Shift Bev   Fri Sep 10 2004 02:12 AM
. * * Re: Model Shift scottsvb1   Fri Sep 10 2004 02:38 AM
. * * I need to go back to bed Rasvar   Fri Sep 10 2004 07:30 AM
. * * Re: I need to go back to bed recmod   Fri Sep 10 2004 07:34 AM
. * * Re: I need to go back to bed GuppieGrouper   Fri Sep 10 2004 07:41 AM
. * * Re: I need to go back to bed Rasvar   Fri Sep 10 2004 07:51 AM
. * * Wind Field Maps Justin in Miami   Fri Sep 10 2004 09:25 AM
. * * Re: Model Shift seems in agreement bobbi   Fri Sep 10 2004 07:30 AM
. * * Re: Tired of hurricanes... Wxwatcher2   Fri Sep 10 2004 01:58 AM
. * * Re: Tired of hurricanes... mud1967   Fri Sep 10 2004 01:48 AM
. * * Re: Tired of hurricanes... Wxwatcher2   Fri Sep 10 2004 01:59 AM
. * * Re: Tired of hurricanes... BillD   Thu Sep 09 2004 11:27 PM
. * * Re: Tired of hurricanes... belleami   Thu Sep 09 2004 11:33 PM
. * * Re: Tired of hurricanes... scottsvb1   Thu Sep 09 2004 11:35 PM
. * * Re: Tired of hurricanes... Wxwatcher2   Thu Sep 09 2004 11:36 PM
. * * Re: Tired of hurricanes... jaybythebay   Thu Sep 09 2004 11:19 PM
. * * Re: Tired of hurricanes... mud1967   Fri Sep 10 2004 12:08 AM
. * * Re: S.E. Fla in the clear based upon Spagetti? BillD   Thu Sep 09 2004 10:58 PM
. * * Re: S.E. Fla in the clear based upon Spagetti? scottsvb1   Thu Sep 09 2004 10:53 PM
. * * Re: S.E. Fla in the clear based upon Spagetti? scottsvb1   Thu Sep 09 2004 10:56 PM
. * * Re: Hmmmm StormHound   Thu Sep 09 2004 10:40 PM
. * * Re: Hmmmm rule   Thu Sep 09 2004 10:15 PM
. * * Re: Ivan possible postponements Jeffmidtown   Thu Sep 09 2004 09:49 PM
. * * Re: Supplies in Manatee County Gone Rasvar   Thu Sep 09 2004 09:46 PM
. * * Re: For what it's worth... Martha   Thu Sep 09 2004 09:36 PM
. * * Ever so slightly shifting west.... is this a trend? Frank P   Thu Sep 09 2004 05:09 PM
. * * Re: Ever so slightly shifting west.... is this a trend? Colleen A.   Thu Sep 09 2004 05:18 PM
. * * GFS Model VolusiaMike   Thu Sep 09 2004 05:35 PM
. * * Re: GFS Model MrSpock   Thu Sep 09 2004 05:47 PM
. * * Girls Lie too.... Frank P   Thu Sep 09 2004 05:35 PM
. * * Re: Girls Lie too.... MrSpock   Thu Sep 09 2004 05:46 PM
. * * Re: Girls Lie too.... Colleen A.   Thu Sep 09 2004 05:57 PM
. * * Re: Girls Lie too.... MrSpock   Thu Sep 09 2004 05:59 PM
. * * Latest Vortex recmod   Thu Sep 09 2004 06:53 PM
. * * Re: Latest Vortex Colleen A.   Thu Sep 09 2004 07:24 PM
. * * This was interesting belleami   Thu Sep 09 2004 07:34 PM
. * * Re: This was interesting DroopGB31   Thu Sep 09 2004 07:51 PM
. * * Re: This was interesting kelcot   Thu Sep 09 2004 08:00 PM
. * * Re: This was interesting Heather   Thu Sep 09 2004 08:06 PM
. * * Re: This was interesting BillD   Thu Sep 09 2004 08:28 PM
. * * Re: This was interesting Kevin   Thu Sep 09 2004 08:34 PM
. * * Re: This was interesting Heather   Thu Sep 09 2004 08:41 PM
. * * Re: This was interesting Terra   Thu Sep 09 2004 08:50 PM
. * * Re: This was interesting kelcot   Thu Sep 09 2004 08:04 PM
. * * Re: This was interesting HadItinOrlando   Thu Sep 09 2004 08:08 PM
. * * Re: This was interesting kelcot   Thu Sep 09 2004 08:21 PM
. * * Re: This was interesting kelcot   Thu Sep 09 2004 08:11 PM
. * * Here's your 8PM intermediate advisory... Kevin   Thu Sep 09 2004 08:05 PM
. * * Re: Here's your 8PM intermediate advisory... Kimster   Thu Sep 09 2004 08:16 PM
. * * Re: Here's your 8PM intermediate advisory... MrSpock   Thu Sep 09 2004 08:08 PM
. * * Vortex translation Frank P   Thu Sep 09 2004 08:13 PM
. * * Models Jamiewx   Thu Sep 09 2004 08:17 PM
. * * Re: Models Colleen A.   Thu Sep 09 2004 09:04 PM
. * * Re: Models meto   Thu Sep 09 2004 08:28 PM
. * * Re: Vortex translation MrSpock   Thu Sep 09 2004 08:17 PM
. * * Re: Vortex translation Rasvar   Thu Sep 09 2004 08:41 PM
. * * Re: Vortex translation Frank P   Thu Sep 09 2004 08:31 PM
. * * Re: Vortex translation MrSpock   Thu Sep 09 2004 08:40 PM
. * * Re: Vortex translation BillD   Thu Sep 09 2004 08:54 PM
. * * Models Wxwatcher2   Thu Sep 09 2004 09:04 PM
. * * Re: Models wxman007   Thu Sep 09 2004 09:08 PM
. * * Re: Models andy1tom   Thu Sep 09 2004 09:39 PM
. * * Re: Vortex translation rd522525   Thu Sep 09 2004 08:38 PM
. * * Re: Vortex translation Kevin   Thu Sep 09 2004 08:28 PM
. * * Re: Latest Vortex Wxwatcher2   Thu Sep 09 2004 07:32 PM
. * * Grenada, Frances, Apprentice, RUReady for... LI Phil   Thu Sep 09 2004 07:23 PM
. * * Re: Grenada, Frances, Apprentice, RUReady for... Colleen A.   Thu Sep 09 2004 07:43 PM
. * * Re: Grenada, Frances, Apprentice, RUReady for... trinibaje   Thu Sep 09 2004 07:32 PM
. * * Re: Ivan with Double Eyewalls? Weakens a bit LI Phil   Thu Sep 09 2004 05:05 PM
. * * Re: Ivan with Double Eyewalls? Weakens a bit LI Phil   Thu Sep 09 2004 05:07 PM
. * * thanks for all the excellent discussion the gulf   Thu Sep 09 2004 05:55 PM
. * * Thoughts.... wxman007   Thu Sep 09 2004 05:14 PM
. * * Re: Ivan with Double Eyewalls? Weakens a bit Steve   Thu Sep 09 2004 05:12 PM

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