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PTC Matthew


PaEasternWX

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From the NHC:

2.  Direct hurricane impacts are possible in Florida later this
week.  Tropical storm and/or hurricane watches are likely tomorrow
morning for portions of the Florida peninsula and the Florida Keys.

3.  Tropical storm or hurricane conditions could affect portions of
Georgia, South Carolina, and North Carolina later this week or this
weekend, even if the center of Matthew remains offshore.  It is too
soon to specify what, if any, direct impacts Matthew might have on
the remainder of the U.S. east coast farther north.  At a minimum,
very dangerous beach and boating conditions are likely along much of
the U.S. east coast later this week and weekend.

 

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Anybody know what 10 to 15 feet of storm surge does to the Bahamas? 

STORM SURGE:  The combination of a dangerous storm surge and large
and destructive waves could raise water levels by as much as the
following amounts above normal tide levels...

Southern Coast of Cuba east of Cabo Cruz...7 to 11 feet
South Coast of Haiti...7 to 10 feet
Northern Coast of Cuba east of Camaguey...4 to 6 feet
Jamaica...2 to 4 feet
Gulf of Gonave in Haiti...3 to 5 feet
Southern coast of the Dominican Republic...1 to 3 feet
The Bahamas...10 to 15 feet
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I've just been following this in passing and perhaps it was already covered at an earlier time but since Hazel was just mentioned, would it be fair to say that a quicker motion by Matthew would increase the chances of a Hazel type track?  The logic being that it would increase the odds of the incoming trough fully capturing the storm (assuming the trough is reasonably amplified).

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3 minutes ago, jojo762 said:

Anybody know what 10 to 15 feet of storm surge does to the Bahamas? 

STORM SURGE:  The combination of a dangerous storm surge and large
and destructive waves could raise water levels by as much as the
following amounts above normal tide levels...

Southern Coast of Cuba east of Cabo Cruz...7 to 11 feet
South Coast of Haiti...7 to 10 feet
Northern Coast of Cuba east of Camaguey...4 to 6 feet
Jamaica...2 to 4 feet
Gulf of Gonave in Haiti...3 to 5 feet
Southern coast of the Dominican Republic...1 to 3 feet
The Bahamas...10 to 15 feet

 

 

This may help:

https://www.wunderground.com/hurricane/IslandsSurge.asp

 

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I have noticed over the past couple hours that the storm appears to be taking on annular characteristics. The transition to annular is not complete (and may not complete prior to landfall in Haiti). The north, west, and south quadrants of the storm appear annular, while the eastern portions and the eye itself have not yet completed the transition.

For reference, "An annular tropical cyclone is a subset of tropical cyclones that features a large, symmetric eye surrounded by a thick and uniform ring of intense convection, often having a relative lack of discrete rainbands." (Wikipedia)

Compare the current IR:

GANIMKA76PB30.jpg

to an IR image taken 4 hours earlier:

GANIMKA76PB14.jpg

 

 

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11 minutes ago, Hoosier said:

I've just been following this in passing and perhaps it was already covered at an earlier time but since Hazel was just mentioned, would it be fair to say that a quicker motion by Matthew would increase the chances of a Hazel type track?  The logic being that it would increase the odds of the incoming trough fully capturing the storm (assuming the trough is reasonably amplified).

The setup really isn't similar to Hazel at all. Hazel had a large amplified trough over the plains/ohio valley and Hazel phased with it and it became a huge cutoff system over the ohio valley/east cost. The trough on this one isn't really anywhere near as amplified.

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10 minutes ago, jojo762 said:

Anybody know what 10 to 15 feet of storm surge does to the Bahamas? 

STORM SURGE:  The combination of a dangerous storm surge and large
and destructive waves could raise water levels by as much as the
following amounts above normal tide levels...

Southern Coast of Cuba east of Cabo Cruz...7 to 11 feet
South Coast of Haiti...7 to 10 feet
Northern Coast of Cuba east of Camaguey...4 to 6 feet
Jamaica...2 to 4 feet
Gulf of Gonave in Haiti...3 to 5 feet
Southern coast of the Dominican Republic...1 to 3 feet
The Bahamas...10 to 15 feet

Funny you asked that.  Was just noodling around on one of the elevation sites and all of the major islands in the Bahamas have points over 20 feet in elevation, where I assume they have shelters for locals who decide to ride out the storm.  However there are hundreds of small to tiny islands, where every point is under 10 feet in elevation, so presumably people on those islands will evacuate.  If they want to survive.  

http://elevationmap.net/1499-us-1-rahway-nj-07065-usa?latlngs=(40.601767312528644,-74.26714897155762)#menu2

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4 minutes ago, Superstorm93 said:

What are you talking about? If you're going to say something like that at least have some substance behind it. 

Only out to 24 hours. 

Where are the mods when you need them...

 

anyhow, fresh info from se eye wall: 

 recon_AF306-1814A-MATTHEW_dropsonde_2016

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14 minutes ago, Random Chaos said:

I have noticed over the past couple hours that the storm appears to be taking on annular characteristics. The transition to annular is not complete (and may not complete prior to landfall in Haiti). The north, west, and south quadrants of the storm appear annular, while the eastern portions and the eye itself have not yet completed the transition.

For reference, "An annular tropical cyclone is a subset of tropical cyclones that features a large, symmetric eye surrounded by a thick and uniform ring of intense convection, often having a relative lack of discrete rainbands." (Wikipedia)

Compare the current IR:

GANIMKA76PB30.jpg

to an IR image taken 4 hours earlier:

GANIMKA76PB14.jpg

 

 

It looks like it's trying to develop a rather small eye, though, not the giant ones associated with annular storms. I think it's just unusual to see such a large storm be so organized and it gives the illusion of being annular, like Katrina.

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1 minute ago, Superstorm93 said:

West of the 12z and slightly faster as well. 

Ridging is only marginally stronger this run, and the trough in the Plains is roughly the same in orientation and strength by 54 hours 

Certain people in here should take notes about your analysis . This pass is gonna have some big #'s come out. 

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The NASA Global Hawk is supposed to start a long-duration mission tommorow night to help sample the upper air pattern around Matt. The two year mission actually ended last week with the aircraft ferried back to California. The CIMSS folks convinced NASA to extend the mission. It'll be coming from California.

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