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2016 Atlantic Hurricane season


Jason WX

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As of late Monday afternoon the disturbance over Aftrica has finally moved off shore.  Looks very good on the last vis satellite of the day. Coming off at a fairly high latitude of about 18 or 19 north.  It would have better chances of crossing the Atlantic if it had come off further south.  Something to watch.

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For the last week the GFS and Euro have shown this system quickly developing and moving west across the Atlantic.  However, they've gradually been backing off the intensity, and now the latest Euro no longer even develops it.  Let's face it, the Atlantic basin sucks.  When waves emerge from Africa they're shredded by overwhelming SAL.  If they can manage to hold together and reach the western Atlantic they're shredded by upper lows.  Remember back in the day when tracking hurricanes used to be fun?  These days it's a never-ending grind.

Given the upward trend in global water temps, Atlantic included, if the atmosphere lines up just right like 2005 we'll see another explosive season.  It's bound to happen at some point.  The general trend, though, can easily make a hurricane geek a bit testy.

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4 hours ago, hawkeye_wx said:

For the last week the GFS and Euro have shown this system quickly developing and moving west across the Atlantic.  However, they've gradually been backing off the intensity, and now the latest Euro no longer even develops it.  Let's face it, the Atlantic basin sucks.  When waves emerge from Africa they're shredded by overwhelming SAL.  If they can manage to hold together and reach the western Atlantic they're shredded by upper lows.  Remember back in the day when tracking hurricanes used to be fun?  These days it's a never-ending grind.

Given the upward trend in global water temps, Atlantic included, if the atmosphere lines up just right like 2005 we'll see another explosive season.  It's bound to happen at some point.  The general trend, though, can easily make a hurricane geek a bit testy.

This is how its always been.  Years like the early 2000s are the exception, not the rule.  You can go a really long time between a long-track CV landfall in the US.

The major hurricane drought is a bit fluky, but that's more as a result of really few hurricanes in the Gulf compared to past CV dry spells.

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4 hours ago, hawkeye_wx said:

For the last week the GFS and Euro have shown this system quickly developing and moving west across the Atlantic.  However, they've gradually been backing off the intensity, and now the latest Euro no longer even develops it.  Let's face it, the Atlantic basin sucks.  When waves emerge from Africa they're shredded by overwhelming SAL.  If they can manage to hold together and reach the western Atlantic they're shredded by upper lows.  Remember back in the day when tracking hurricanes used to be fun?  These days it's a never-ending grind.

Given the upward trend in global water temps, Atlantic included, if the atmosphere lines up just right like 2005 we'll see another explosive season.  It's bound to happen at some point.  The general trend, though, can easily make a hurricane geek a bit testy.

This implies the models should be correct. 

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24 minutes ago, isohume said:

This implies the models are correct. 

It does make sense that a wave moving quickly westward through a rather dry, stable tropical Atlantic would struggle to strengthen very quickly.  Models have gradually been picking up on that after being pretty aggressive early on.

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14 minutes ago, hawkeye_wx said:

It does make sense that a wave moving quickly westward through a rather dry, stable tropical Atlantic would struggle to strengthen very quickly.  Models have gradually been picking up on that after being pretty aggressive early on.

It doesn't mean the Atlantic basin sucks tho. It's a complicated basin. 

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1 hour ago, isohume said:

It doesn't mean the Atlantic basin sucks tho. It's a complicated basin. 

12z runs of the GFS and Euro are showing the development of tropical low pressure over the Atlantic to the south and east of NYC that retrogrades back to the north and west towards SE New England and eastern LI.  12z Run of the Euro shows landfall over Cape Cod at 9/7 0z while GFS stays OTS.  Both models were showing this development on the 0z runs. 

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On 8/29/2016 at 8:04 AM, bluewave said:

It could be the early stages of the projected Hadley cell expansion and Caribbean drying that the long term models had been showing.

But the researchers probably want to see if this dry pattern persists into future decades or reverses back to less dry to know for sure.

 

So let me get this straight. For years scientists have been alarming about climate change and the increase in temperatures across the globe. Sea levels rising, disappearing glaciers, warmer sea temps, which would all mean stronger weather activity. All that said, why is the air drying?  You'd assume the air would be more dense from evaporating water due to the warmer temps. Or is the Atlantic not affected by these rising temperatures as much as the Pacific or other bodies of water?

 

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7 hours ago, bluewave said:

The idea is that the warming of the higher latitudes faster than the equator causes the Hadley cell to expand and drying in places like

the Caribbean. But it may still be to early to tell whether the recent Atlantic MDR drying is natural variability or part of CC.

You need longer periods of data to make that call. 

http://newsroom.ucla.edu/releases/Parts-of-Caribbean-and-Central-6972

http://www.pnas.org/content/103/16/6110.full.pdf

 

At some point one can no longer deny what is plainly in sight right in front of them. It's been 11 years, the AMO has been positive the entire time, and each and every year we still have the same issue with an Atlantic MDR that cannot support tropical cyclone activity during peak season. Hurricane seasons in the future will not be the same as hurricane seasons in the past.

There are other signs of Hadley cell expansion elsewhere as well -- the long-term drought in California, for example.

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6 hours ago, bluewave said:

I guess the nature of research is they like to see a longer data set of 30 years or more to make a definitive call.

But the recent pattern of the drier MDR and the strongest TC activity further north in the Atlantic seems to fit what you

would expect to see. But we'll probably need to see if this pattern persists in the future to know for sure.

Oh yeah, for sure... science won't confirm it for another decade or more. That makes sense (in terms of needing a larger dataset).

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1 hour ago, wxeyeNH said:

I have been watching the area of disturbed weather that came off Africa earlier in the week and has been crossing the Atlantic.  Seems like the convection really increased today.  NHC increased chances of development up to 30% this afternoon.  Something to watch....

Is this the wave the GFS shows near Florida at 360 hours?

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7 minutes ago, Snow88 said:

Is this the wave the GFS shows near Florida at 360 hours?

It's the wave that 2 weeks many of the models had developing into a major hurricane.  It came off Africa with a lot of African dust and the models really backed down on its developing.  With little fanfare or convection it has crossed the Atlantic this past week.  Convection has been increasing the past couple of days as it approaches the islands.  Just something to watch.

Untitled.jpg

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On 9/2/2016 at 2:01 AM, adelphi_sky said:

So let me get this straight. For years scientists have been alarming about climate change and the increase in temperatures across the globe. Sea levels rising, disappearing glaciers, warmer sea temps, which would all mean stronger weather activity. All that said, why is the air drying?  You'd assume the air would be more dense from evaporating water due to the warmer temps. Or is the Atlantic not affected by these rising temperatures as much as the Pacific or other bodies of water?

 

You hear a lot of hype in the mainstream media or even in some public scientific news outlets. The research on CC and tropical activity has been pretty ambiguous. It will probably increase in some areas and decrease in others. Some evidence suggests an increase in the intensity of the absolute strongest category of storms.

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On 9/7/2016 at 6:54 PM, Amped said:

We're still 8/4/1 for the season, got some help from that January storm.    Can probably get to normal even if September is somehow a train wreck.

Several disturbances but  none seem to be able to do anything at  peak.

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