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Azores #96L fails to complete transition into a Sub-Tropical Storm. Elsewhere, weak low pressure in Caribbean may linger into next week.
Days since last H. Landfall - US: Any 42 (Nate) , Major: 60 (Maria) Florida - Any: 70 (Irma) Major: 70 (Irma)
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Archives >> 2011 Storm Forum

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Ed DunhamAdministrator
Former Meteorologist & CFHC Forum Moderator (Ed Passed Away on May 14, 2017)


Reged: Sun
Posts: 2565
Loc: Melbourne, FL
Area of Interest - Subtropical Storm Sean
      #92416 - Mon Nov 07 2011 09:43 AM

The gale center located about 660 mles east of east central Florida at 07/14Z was near 27.7N 69.4W and is drifting to the west southwest. A drift to the west and eventually northwest is expected over the next few days. Convection has increased closer to the center and, although dry air continues to envelope around most of the system (except to the northeast), some additional development toward a subtropical system is possible. SSTs are about 27C in the area.
ED

(System upgraded to STS Sean at 08/09Z.)

Edited by Ed Dunham (Tue Nov 08 2011 08:56 AM)


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Ed DunhamAdministrator
Former Meteorologist & CFHC Forum Moderator (Ed Passed Away on May 14, 2017)


Reged: Sun
Posts: 2565
Loc: Melbourne, FL
Re: Area of Interest - Subtropical Storm Sean [Re: Ed Dunham]
      #92423 - Tue Nov 08 2011 09:12 AM

The gale southwest of Bermuda has developed some tropical characteristics and was classified as Subtropical Storm Sean. The center of Sean is currently stationary and consolidating about 425 miles southwest of Bermuda with good convection in the northern half of the cyclone. Sean remains in an area with no significant steering currents although a weak drift with a northerly component is likely later today. SSTs are close to 27C, so some slow additional development seems likely.
ED


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Ed DunhamAdministrator
Former Meteorologist & CFHC Forum Moderator (Ed Passed Away on May 14, 2017)


Reged: Sun
Posts: 2565
Loc: Melbourne, FL
Re: Area of Interest - Tropical Storm Sean [Re: Ed Dunham]
      #92426 - Wed Nov 09 2011 10:41 PM

Tropical Storm Sean, still a potent tropical storm, has been slowly increasing in forward speed to the north. Given the orientation of the front that will exit the east coast Thursday evening, Sean may move more to the north northeast rather than northeast and extratropical transition is likely before the storm merges with the front. The central eye-like feature which had been contracting on Wednesday, is now expanding again and along with some dry air entrainment, warming cloud tops, slowly cooling SSTs and increasing southwesterly shear, the chances for additional intensification are probably on the decline.
ED


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