
TC Bertha
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- brunota2003
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I really just have to laugh at this hurricane. I knew about ERC's being cancelled, but reversed? There is going to be an eye wall battle soon, watch out!
A major paper should be written on this thing, it's makin' history!
How was Hurricane Epsilon annular then?


Derek Ortt wrote:it has to be at least 85KT to be considered annular
so this doesn't fit. The debate over structure is a moot point
How was Hurricane Epsilon annular then?
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Re:
Cyclenall wrote:I really just have to laugh at this hurricane. I knew about ERC's being cancelled, but reversed? There is going to be an eye wall battle soon, watch out!![]()
A major paper should be written on this thing, it's makin' history!
Derek Ortt wrote:it has to be at least 85KT to be considered annular
so this doesn't fit. The debate over structure is a moot point
How was Hurricane Epsilon annular then?
It is currently by the nhc 80 knots, and the recon shown that it could have upwards of 85 knots with that 99 knot flight level wind. So it could be slightly stronger now.
I think that any one that writes a paper and what we see going on is "going on" then I believe it would take them to PHD level very fast.
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- wxmann_91
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Re:
Derek Ortt wrote:it has to be at least 85KT to be considered annular
so this doesn't fit. The debate over structure is a moot point
Whaaa?? I've never heard that criteria. Annular criteria are based on shape not size.
Bertha is not annular not because of its strength but because of its shape. It's clearly not symmetrically circular right now. Thus it's not annular.
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- wxmann_91
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The current "reverse-ERC", I believe, is due to the upwelling that is occurring right now. The outer eyewall never really formed well perhaps due to thermodynamic factors. Thus it never held a monopoly on moist inflow, and the inner eyewall held on. When shear, dry air, and SST factors come into play, a malformed outer eyewall is most likely to be affected first since it is the one grabbing most of the moist inflow (and it's more outside, having fewer rainbands to separate between it and the environment surrounding), and so now it's being weakened, allowing the inner eyewall and the thunderstorms within it to reintensify.
This is why I believe that ERC speed is proportional to the how favorable the environment surrounding is.
This is why I believe that ERC speed is proportional to the how favorable the environment surrounding is.
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Re: Hurricane Bertha in Western Atlantic
From a distance.
She's stuck!
http://www.ssd.noaa.gov/goes/east/nwatl/loop-avn.html
and from Derek's page: http://metofis.rsmas.miami.edu/~dortt/s ... 1_loop.gif

She's stuck!
http://www.ssd.noaa.gov/goes/east/nwatl/loop-avn.html
and from Derek's page: http://metofis.rsmas.miami.edu/~dortt/s ... 1_loop.gif

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Re: Hurricane Bertha in Western Atlantic
Say "hello" to a definite developing annular hurricane! It's not strictly annular at this time, but it's clearly transitioning to an annular TC, as I previously anticipated.
http://www.ssd.noaa.gov/goes/east/tatl/loop-ir2.html
It appears that the heralded stall has occurred SE of Bermuda as well. I do not see any defined movement per latest satellite data.
http://www.ssd.noaa.gov/goes/east/tatl/loop-ir2.html
It appears that the heralded stall has occurred SE of Bermuda as well. I do not see any defined movement per latest satellite data.
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- cycloneye
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Re: Hurricane Bertha in Western Atlantic
HURAKAN,I like the ACE table that you have.What are the latest numbers?
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- wxman57
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Re: Hurricane Bertha in Western Atlantic
MiamiensisWx wrote:Say "hello" to a definite developing annular hurricane! It's not strictly annular at this time, but it's clearly transitioning to an annular TC, as I previously anticipated.
http://www.ssd.noaa.gov/goes/east/tatl/loop-ir2.html
It appears that the heralded stall has occurred SE of Bermuda as well. I do not see any defined movement per latest satellite data.
I think it's more like a weakening hurricane that lost its inner core. There's not much symmetry.
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- cycloneye
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Re: Hurricane Bertha in Western Atlantic
No change from ATCF,80 kts,976 mbs:
L, 0, , 0, 0, BERTHA, D,
AL, 02, 2008071212, , BEST, 0, 297N, 626W, 80, 976, HU, 64, NEQ, 30, 30, 30, 30, 1014, 200, 30, 0, 0,
L, 0, , 0, 0, BERTHA, D,
AL, 02, 2008071212, , BEST, 0, 297N, 626W, 80, 976, HU, 64, NEQ, 30, 30, 30, 30, 1014, 200, 30, 0, 0,
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