Wednesday, September 16, 2015

Tropical Depression Deep-Space Nine and an Atlantic Blob: September 16, Update A

It looks like Tropical Depression Deep-Space Nine is out there with a little Blob right on her heels! So much for a quiet season. Sigh. Better stock up with more ice cream and yet another case of wine. :-) 

<Geek Alert!> Putting aside the Original Star Trek, I think it is important to note that Deep-Space Nine was my favourite Star Trek show. :-) What is YOUR Star Trek? <End Geek Alert!>

Tropical Depression Deep-Space Nine is currently centered at around 15N, 43.1W and heading NNW at 8mph, which should take her into the Atlantic, maybe in the general Bermuda direction (too soon to say) and well away from the Caribbean. You can see the center in the visible satellite image:

Her winds are around 30mph (central pressure 1010mb) and she does have some areas of strong convection (red and dark orange part in the infrared satellite image): 

But I would agree with the NHC and say that she is currently a Tropical Depression, not yet a Tropical Storm because although she has strong circulation (vorticity) in the lower half of the troposphere, there is very little in the middle and upper levels. For a Tropical Storm I would expect to see a stronger vorticity signal in the middle troposphere. The current forecast is that she will vanish in the Atlantic (near the Bermuda Triangle? da-da-da = dramatic music ;-)). 

And as for the Atlantic Blob, he is at around 10.5N, 28.5W and is generally heading WNW. He looks like he is in even worse shape than TD Deep-Space Nine:
But interestingly, he has a better circulation (vorticity) signal in the lower and middle troposphere than TD DS9. His convection is poor at the moment because he is moving through the region of dry and dusty Saharan Air Layer. 

I'll be back with an update on both of these tomorrow. 

(Oh, and I never could get past the opening music/song for Star Trek Enterprise...).


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DISCLAIMER: These remarks are just what I think/see regarding tropical storms - not the opinion of any organization I represent. If you are making an evacuation decision, please heed your local emergency management and the National Hurricane Center's official forecast and the National Weather Service announcements. This is not an official forecast. If I "run away, run away" (Monty Python), I'll let you know.

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