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Posted
  • Location: Taunton, Somerset
  • Weather Preferences: Snow, thunder, strong winds
  • Location: Taunton, Somerset

Amanda's winds dropped to 90kts overnight, but the hurricane has re-strengthened unexpectedly to 110kts this morning. The central dense overcast has deepened, and a clear eye has emerged once more. Shear is still affecting Amanda, so it is surprising the hurricane has managed to re-intensify. Sea ttempertures continue to decline further north, and the shear is expected to resume the weakening trend soon. Shear is forecast to ease in a day or two, so the rate of weakening could slow at this time. With Amanda's current intensification in a seemingly hostile environment, it makes the intensity forecast a lot more difficult than normal.

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Posted
  • Location: Leeds/Bradford border, 185 metres above sea level, around 600 feet
  • Location: Leeds/Bradford border, 185 metres above sea level, around 600 feet

Looks on its way out to me..

 

Posted Image

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Posted
  • Location: Taunton, Somerset
  • Weather Preferences: Snow, thunder, strong winds
  • Location: Taunton, Somerset

Yep, it's improved satellite appearance didn't last long. There is a closed eye under there apparently though according to NHC.

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Posted
  • Location: Leeds/Bradford border, 185 metres above sea level, around 600 feet
  • Location: Leeds/Bradford border, 185 metres above sea level, around 600 feet

Still 105mph apparently.

 

Image from near peak.

 

Posted Image

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Posted
  • Location: Taunton, Somerset
  • Weather Preferences: Snow, thunder, strong winds
  • Location: Taunton, Somerset

Amanda has rapidly weakened overnight, and has lost hurricane status, with winds now at 60kts. Some intense convection persists near the LLCC, but the eye has broken down. Shear and dry air will continue to weaken Amanda through today.

Edited by Somerset Squall
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Posted
  • Location: The Netherlands
  • Location: The Netherlands

It looks like Amanda is losing the battle against the shear. The convection it developed a couple of hours earlier (as of 13:00 UTC) has been sheared northward away from the centre. The LLCC (low level circulation centre) is not yet visible; its position will become more clear once daylight imagery becomes available.

 

Posted Image

Visible satellite image loop of Amanda (courtesy: NOAA)

 

What is also remarkable are the very thin, stretched bands of clouds at the western edge and to the west of the convection. From earlier experience, it suggests Amanda is heavily sheared. But does anybody know what is causing this featherlike structure, and what type of convection this is?

 

EDIT: What is quite remarkable (as of 13:00 UTC), is the huge spread in satellite intensity estimates. The most recent CIMSS satellite intensity estimaes showed a differerence of almost 57 kt! While ADT analyzed Amanda as a category 2 hurricane (94.8 kt), AMSU and Satcon both analyzed as a tropical storm (38 and 54 kt, respectively).

 

Sources:

http://www.ssd.noaa.gov/PS/TROP/floaters/01E/01E_floater.html

http://tropic.ssec.wisc.edu/real-time/storm.php?&basin=eastpac&sname=01E&invest=NO&zoom=4&img=1&vars=11111000000000000000000&loop=0

Edited by Vorticity0123
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Posted
  • Location: Taunton, Somerset
  • Weather Preferences: Snow, thunder, strong winds
  • Location: Taunton, Somerset

Looks like cirrus clouds to me. As they are moving in the opposite direction to the convection, it is a clear indication that Amanda is strongly sheared.

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Posted
  • Location: Taunton, Somerset
  • Weather Preferences: Snow, thunder, strong winds
  • Location: Taunton, Somerset

Amanda has been torn apart by shear and dry air this morning. The LLC is elongating, and the intense convection of the yesterday has all but disappeared. Winds are down to 35kts. Weakening to a tropical depression seems imminent, and degeneration into a remnant low soon thereafter.

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Posted
  • Location: Derbyshire Peak District South Pennines Middleton & Smerrill Tops 305m (1001ft) asl.
  • Location: Derbyshire Peak District South Pennines Middleton & Smerrill Tops 305m (1001ft) asl.

This storm is the strongest storm ever recorded during the month of May, with winds that reached 155 mph at its peak. Previously that record was held by Hurricane Adolph in 2001, which reached a top wind speed of 145 mph.

The storm began forming just over a week ago in the waters off the western coast of South America. These waters have been unusually warm recently; a potential signal of the growth of a 2014 El Niño event.

 

http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=2685

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Posted
  • Location: The Netherlands
  • Location: The Netherlands

Looks like cirrus clouds to me. As they are moving in the opposite direction to the convection, it is a clear indication that Amanda is strongly sheared.

 

That indeed makes sense. Thanks. 

 

In adittion to the link Polar maritime provided, a satellite blog from CIMSS, showing some cool pictures of Amanda:

 

http://cimss.ssec.wisc.edu/goes/blog/archives/15764

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Posted
  • Location: Taunton, Somerset
  • Weather Preferences: Snow, thunder, strong winds
  • Location: Taunton, Somerset

Post season analysis next year should shed more light on it Cookie, we will know then :)

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