Posted by: JeffMasters, 3:04 PM GMT on Febuary 01, 2010
An interesting 1002 mb low pressure system with some characteristics of a tropical storm has developed off the coast of Africa, a few hundred miles west-southwest of the Canary Islands. An ASCAT pass from last night revealed top winds of 40 mph near the center, so the low is probably near tropical storm strength. This low is moving east-northeast towards the Canaries, and will likely bring sustained winds of 30 - 35 mph, gusting to 50 mph, to the islands tonight. The storm formed over the weekend from an isolated cold-cored low that was wandering over the Atlantic, and phase space analyses from Florida State University revealed that the low developed a partial warm core over the weekend. A respectable amount of heavy thunderstorm activity has built near the storm's center, characteristic of a tropical storm. The low is over cool 21 - 22°C water, far colder than the typical 26°C needed for a tropical storm to form. Wind shear is marginal for tropical storm formation, about 20 knots. The comma-shaped structure of the storm's spiral bands is characteristic of an extratropical cyclone, and it is pretty unlikely that NHC will view this hybrid storm as being sufficiently tropical to warrant naming it a subtropical depression or subtropical storm. The low is headed towards colder waters of 20°C that lie near the Canary Islands, and the system should become less tropical today.
Posible Tropical Depression near Açores
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Re: Posible Tropical Depression near Açores
Dr Jeff Masters discussion of this low
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Re: Posible Tropical Depression near Açores
It's weakening now, however a few such systems over similarly cold water last season warranted invests. One of them was named "Grace". So why no invest now (or yesterday)? Consistency...
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Re: Posible Tropical Depression near Açores
wxman57 wrote:It's weakening now, however a few such systems over similarly cold water last season warranted invests. One of them was named "Grace". So why no invest now (or yesterday)? Consistency...
I agree!
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Re: Posible Tropical Depression near Açores
I've heard that there was discussion at the NHC about potentially opening up an invest.
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Re: Posible Tropical Depression near Açores
Juliancolton wrote:I've heard that there was discussion at the NHC about potentially opening up an invest.
About 24 hours too late.
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Re: Posible Tropical Depression near Açores
Last edited by littlevince on Tue Feb 02, 2010 6:28 am, edited 1 time in total.
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Re: Posible Tropical Depression near Açores
Some effects of this storm in Tenerife (Canary Islands):
[youtube]http://www.youtube.com/watch?v=b9Cg30B4ex8[/youtube]
[youtube]http://www.youtube.com/watch?v=fHgNde4qJtI[/youtube]
[youtube]http://www.youtube.com/watch?v=kxdHknO6_Y4[/youtube]
[youtube]http://www.youtube.com/watch?v=cLTFBcN-ZEQ[/youtube]
In the last hours the situation also deteriorated in Madeira Island, on the north side of the island some weather stations have more than 230mm (9 inch) of rainfall since midnight, and some landslides have occurred. No victims at the moment.
http://www.wunderground.com/weatherstat ... =IMADEIRA3
[youtube]http://www.youtube.com/watch?v=b9Cg30B4ex8[/youtube]
[youtube]http://www.youtube.com/watch?v=fHgNde4qJtI[/youtube]
[youtube]http://www.youtube.com/watch?v=kxdHknO6_Y4[/youtube]
[youtube]http://www.youtube.com/watch?v=cLTFBcN-ZEQ[/youtube]
In the last hours the situation also deteriorated in Madeira Island, on the north side of the island some weather stations have more than 230mm (9 inch) of rainfall since midnight, and some landslides have occurred. No victims at the moment.
http://www.wunderground.com/weatherstat ... =IMADEIRA3
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Re: Posible Tropical Depression near Açores
Amazing footage, and be safe people. Is tourism the main industry on these islands? The island looks beautiful and robust. Sadly, it seems like the cars will be ruined though from the water. What a storm.
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Re: Posible Tropical Depression near Açores
Impressive videos! It looks very non-tropical at this time but a couple of days ago it looked like a TD except for an attached "tail" that was analyzed as a front.
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I don't believe that this one was ever tropical or subtropical but I do wish we could have more research done in this section of the Atlantic. It seems counterintuitive given the cold currents running south along the Eastern Atlantic but certainly some of them like Vince and Grace really were tropical....or maybe they weren't, but then research is needed to figure out exactly what they and other systems ought to be classified as. It would take co-operative funding with the governments of Spain and Portugal however because I don't think the NHC is going to spend a whole lot of time worrying about these systems 3000 miles from North America that are moving away.
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Re: Posible Tropical Depression near Açores
Well after seeing those videos is clear that thhis type of systems can be dangerous for Portugal and Spain territories so it would be good if they cooperate with the NHC IMO.
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Re: Posible Tropical Depression near Açores
The remains of this low (whatever it is) will make "landfall" later today , somewhere between Portugal and Spain.
A picture from yesterday in Funchal (Madeira Island)
A picture from yesterday in Funchal (Madeira Island)
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