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#391353 - 10/29/10 04:44 PM Tomas  
Joined: Aug 2009
Posts: 65
James Pearce Offline
James Pearce  Offline
Keep an eye on Tomas:

(Although the models have it swinging north, rather than west, out of the Caribbean after the dramatic 5 day forecast)

#391356 - 10/29/10 05:33 PM Re: Tomas [Re: James Pearce]  
Joined: Dec 2006
Posts: 12,001
elbert Offline
elbert  Offline
Yep going North and a little to soon to even bring the subject up, but what the heck it stimulates plywood sales.
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#391357 - 10/29/10 06:10 PM Re: Tomas [Re: elbert]  
Joined: Aug 2009
Posts: 65
James Pearce Offline
James Pearce  Offline
Agreed ;-)

Fairly sure Haiti doesn't deserve any more trauma for a while.

#391362 - 10/29/10 08:29 PM Re: Tomas [Re: James Pearce]  
Joined: Oct 1999
Posts: 55,631
Marty Offline
Marty  Offline
Stengthening Tomas headed for the Lesser Antilles

Posted by: JeffMasters, 1:27 AM GMT on October 30, 2010

Tropical Storm Tomas has exploded into existence in spectacular fashion, becoming the nineteenth named storm of this amazingly active 2010 Atlantic hurricane season. I'm reporting to you live from the National Hurricane Center tonight, where forecasters are working hard to stay abreast of Tomas' intensification. Three hurricane specialists are on duty tonight--Dave Roberts, who is handling Tropical Storm Shary, and Robbie Berg and Dan Brown, who are focusing on Tomas. The Hurricane Hunters have just left Tomas, as of 8pm EDT, and they found a significant increase in winds. Winds at their 1500 foot flight level were 70 mph, and surface winds as measured by the SFMR instrument were near 60 mph. This supports an increase in Tomas' winds to 60 mph in tonight's 8pm EDT public advisory. Since this is such a large increase in intensity from what was forecast--Tomas was not supposed to have 60 mph winds for another 24 hours--this necessitates issuance of a special advisory package. A full set of forecast maps, a marine advisory, wind probability forecast, and a discussion just went out to the world. While all this was occurring, several phone calls to Barbados, St. Lucia, and Martinique were made, alerting the islands to the fact that a Hurricane Warning may be required with the 11pm advisory tonight. NHC has both French speaking and Spanish speaking meteorologists on staff that can coordinate with the islands that don't have English as their main language. I listened in on a 5-minute conversation in French between the weather service in Martinique and NHC meteorologist Mike Tichacek, as they discussed when Martinique may want to issue a Hurricane Warning.

Intensity forecast for Tomas

The forecasters at NHC are puzzling over the latest intensity forecasts for Tomas. The latest intensity forecast from the GFDL, HWRF, and SHIPS models are not that impressive, and they keep Tomas as a strong tropical storm or weak hurricane for the next five days. The wind shear forecast from SHIPS is particularly odd--the latest 18Z forecast predicts high wind shear of 20+ knots beginning Sunday morning, and the previous SHIPS forecast held wind shear below 15 knots for the next five days. The latest runs by the GFS, ECMWF, and UKMET models all show a very favorable environment for intensification over the next five days over the Caribbean, with Tomas positioning itself beneath an upper level high in a light wind shear environment. The best bet is that Tomas will intensify into a major hurricane over the Central Caribbean by early next week.

Track forecast for Tomas

After Tomas reaches the central Caribbean 4 - 6 days from now, there are two possible track scenarios depicted by the models--a continued westerly motion towards Nicaragua, or a sharp turn to the north, with a track over Hispaniola or Puerto Rico. Steering currents will be weak, and we'll just have to wait and see how the steering currents evolve.

Tomas' formation location unprecedented this late in the season
Tomas' formation ties 2010 with 1995 and 1887 for 3rd place for most number of named storms in an Atlantic hurricane season. Only 2005 (28 named storms) and 1933 (21 named storms) were busier. Atlantic hurricane records go back to 1851, though there were likely many missed named storms prior to the beginning of satellite coverage in the mid-1960s.

The formation of a tropical storm so far south and east this late in the season is unprecedented in the historical record; no named storm has ever been present east of the Lesser Antilles (60W) and south of 12N latitude so late in the year. Hurricane Six of 1896 came close--it was also a tropical storm south of 12N and east of 60W on October 29, but nine hours earlier in the day. That storm recurved to the north and missed the Lesser Antilles. Tomas' track through the southern Lesser Antilles so late in the year is unprecedented. There have been only two other tropical storms that formed after October 15 south of 12N and east of 60W: Hurricane Jose, which was a tropical storm in that region on October 18, 1999, and Tropical Storm Nicolas, on October 16, 2003. Tomas most reminds me of Hurricane Joan of 1988, which was a tropical storm on October 14 near Tomas' current location, and later strengthened into a Category 4 hurricane that hit Nicaragua.

Another unusual aspect of Tomas' formation is that we now have two simultaneous named storms in the Atlantic Ocean on October 29. There have been only four hurricane seasons since 1851 that have had two simultaneous named storms later in the year. The record was set way back in 1887, when Hurricane Eighteen and Tropical Storm Nineteen were both active on December 8. There were three years that had simultaneous November named storms: 1932, 1961, and 2001.

Next update
I'll have more late Saturday morning.

Jeff Masters

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Last edited by Marty; 10/29/10 08:33 PM.
#391366 - 10/30/10 07:04 AM Re: Tomas [Re: James Pearce]  
Joined: Oct 2001
Posts: 5,847
Diane Campbell Offline
Diane Campbell  Offline
Big storm - not a nice prospect for the end of season.

#391425 - 10/31/10 08:22 AM Re: Tomas [Re: James Pearce]  
Joined: Oct 1999
Posts: 55,631
Marty Offline
Marty  Offline
Supposed to head north soon. here's the track and computer models. what a mess huh? nothing like certainty!!

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#391665 - 11/02/10 07:42 PM Re: Tomas [Re: James Pearce]  
Joined: Sep 2010
Posts: 165
P.J. Offline
P.J.  Offline
Someone more tech savvy please copy and past this picture or screenshot. Kinda good news I guess.

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#391951 - 11/05/10 07:49 AM Re: Tomas [Re: James Pearce]  
Joined: Oct 1999
Posts: 55,631
Marty Offline
Marty  Offline
Tomas this morning....

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#392694 - 11/13/10 03:23 PM Re: Tomas [Re: James Pearce]  
Joined: Oct 2001
Posts: 5,847
Diane Campbell Offline
Diane Campbell  Offline
I was on Isla Margarita when Tomas passed. The waves were amazing on the northern coast.

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