Dr. Jeff Masters' WunderBlog

No change to Nate; Maria fizzles; Katia headed to Britain
Posted by: Dr. Jeff Masters, 3:47 PM GMT op 10 september 2011 +19
Tropical Storm Nate in Mexico's Bay of Campeche continues to have trouble intensifying. Latest visible satellite loops show that Nate has a large, cloud-filled center, and the storm is probably pulling in dry air to its north into its center. Nate is also likely having trouble with all the cool waters it has stirred to the surface. Assuming Nate is able to close off its center from the dry air, it would take the storm at least a day to tighten up its rather large center, form a solid eyewall, and reach hurricane intensity. Nate doesn't have enough time before landfall for that to happen, and it is unlikely Nate will ever become a hurricane. The latest wind probability forecast form NHC gives Nate a 13% chance of reaching hurricane strength on Sunday. Latest radar imagery from Alvarado, Mexico shows heavy rains from Nate are affecting the coast near Veracruz, and heavy rains of 4 - 6 inches will be the main threat from Nate.


Figure 1. True-color MODIS image of Tropical Storm Nate taken at 12:45 pm EDT Friday, September 9, 2011. At the time, Nate was a tropical storm with 50 mph winds. Image credit: NASA.

Nate is a small storm, and is not likely to bring significant rains to Texas; only extreme South Texas near Brownsville could see an inch or so of rain on Sunday from an outer spiral band of Nate. Our latest wundermap wind forecast map from the European Center model, with the fire layer turned on, shows that Nate's wind field on Saturday and Sunday will not be large enough to fan the fires burning in Texas.

Tropical Storm Maria
Tropical Storm Maria doesn't look much like a tropical storm--on the latest satellite imagery it looks like a squashed question mark instead of a spiral. The surface circulation center is very poorly defined, and moderate wind shear of 15 - 20 knots has really done the Lesser Antilles Islands a big favor by ripping up Maria. It is doubtful this storm will generate any sustained winds of tropical storm force in the islands, and it is a 50/50 proposition that Maria will degenerate into a tropical disturbance and become ex-Tropical Storm Maria later today. Martinique radar shows heavy rains from Maria are mostly east of the islands, and the thunderstorms are not well-organized into spiral bands. The wind shear affecting Maria will probably last through Sunday. By Monday, wind shear is predicted to fall enough so that Maria could potentially organize again. However, the storm is expected to be far from land when that occurs. Bermuda could see a few rain showers from Maria on Wednesday, and Maria may be a threat to southeast Newfoundland late next week.


Figure 2. Morning satellite image of Tropical Storm Maria shows the the storm looks like a squashed question mark?

Hurricane Katia
Hurricane Katia brushed by Newfoundland, Canada this morning, and is now racing east-northeast at 52 mph into the open Atlantic. With water temperatures 19°C (66°F) underneath it, Katia has lost its tropical characteristics, and has transitioned to a powerful extratropical storm. Extratropical Storm Katia will continue east-northeastward towards Europe, and on Monday, the storm will pass very close to northern British Isles. The offshore waters of Northern Ireland and Western Scotland can expect storm-force winds of 50 - 60 mph on Monday as Katia roars past to the north. The storm will bring 2 - 4 inches of rain to the coast, and likely cause significant tree damage and power failures.


Figure 3. Image of Hurricane Katia taken from the International Space Station at 15 GMT September 9, 2011, by astronaut Ron Garan. At the time, Katia was a Category 1 hurricane with 85 mph winds. Long Island, New York is visible at the lower left.

Elsewhere in the tropics
The NOGAPS and UKMET models predict the possible development of a tropical wave 6 - 7 days from now off the coast of Africa.

I'll have an update by early Sunday afternoon.

Jeff Masters
Categories: Hurricane
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701. Some1Has2BtheRookie 12:41 AM GMT op 11 september 2011    
Quoting P451:


Google Earth lags with updates. About every 10 minutes one comes in - IF - it's operating properly - and that update will always be about 30 minutes behind realtime.

Right now the latest one is posted and it's data goes up to 814pm et.



LOL - Yes, I know. I was just making an attempt at humor.

Humor - 0
Logic - 1

DRAT!
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703. FrankZapper 12:44 AM GMT op 11 september 2011    
Quoting sunlinepr:


Katrina was an unexpected, extraordinary event...
My brother in law and sister, 35 years working at the VA hospital there, lost their jobs, due to its clossing... They can appreciate that story better than me cause they lived it... My cousin, Nat. Guard, was sent to patrol downtown, unarmed and had difficult times with looters...
That's how I feel. They both were watershed events of our time.
Member Since: 26 mei 2011 Posts: 0 Comments: 1193
704. RTLSNK (Mod) 12:45 AM GMT op 11 september 2011    
Quoting Grothar:


Ok, you're so smart. What was Paladin's first name?


Good evening young Jedi.

Paladin's first name was Bobby.

And Paladin was not his real name.

It was the nickname given to him by Smoke before he died.

Bobby was an ex-Army Officer, a West Point Graduate, and a polyglot.

A polyglot, much like yourself young Jedi. :)
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705. Sangria 12:45 AM GMT op 11 september 2011    
Quoting P451:



USELESS waste of time.


Not sure what you mean by that....is the website that Twincomanche references not a respected source of information?
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706. Grothar 12:45 AM GMT op 11 september 2011    
<>img src="">
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709. Grothar 12:47 AM GMT op 11 september 2011    
Quoting RTLSNK:


Good evening young Jedi.

Paladin's first name was Bobby.

And Paladin was not his real name.

It was the nickname given to him by Smoke before he died.

Bobby was an ex-Army Officer, a West Point Graduate, and a polyglot.

A polyglot, much like yourself young Jedi. :)


Come on, we all know it was Wire! Remember his card read: Wire Paladin
San Francisco. :)
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710. HIEXPRESS 12:47 AM GMT op 11 september 2011    
Runners know temperature & humidity affects comfort, but more importantly, pace:
Add 2% to your time for every 5 degrees warmer between 60 and 75F, then double that impact for each additional 5 degrees up to 85. Running guru Jeff Galloway puts it this way:

55-60 degrees - 1% - 8:00 becomes 8:05
60-65 degrees - 3% - 8:00 becomes 8:15
65-70 degrees - 5% - 8:00 becomes 8:25
70-75 degrees - 7% - 8:00 becomes 8:35
75-80 degrees - 12% - 8:00 becomes 8:58
80-85 degrees - 20% - 8:00 becomes 9:35
Above 85 degrees - Forget it ... run for fun and not time

Add 1 second per mile for every percentage point the relative humidity exceeds 65%
from :http://marathonman.typepad.com/marathoning_matter s/2009/01/rules-of-thumb-for-running-a-marathon.ht ml
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712. HuracanTaino 12:49 AM GMT op 11 september 2011    
Quoting P451:


Not visible from Puerto Rico.

She is from Martinique radar. But with only four frames of animation a conclusion cannot be drawn. If you were to try I don't think it would be west.

Antilles Radar
Thank you well, I guess you are right the Martinique radar is hard to read for me, but was talking about the outer bands around what I think is the COC that is shown in the long range radar,but perhaps is an illusion. I sure recon would clarify what's going on.
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714. WatchingThisOne 12:52 AM GMT op 11 september 2011    
Quoting Sangria:


The wind is 3.8 mph


That's a light wind, but it's enough to drop apparent temp ("real feel") by that much.
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717. Grothar 12:56 AM GMT op 11 september 2011    
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718. FrankZapper 12:58 AM GMT op 11 september 2011    
Quoting FLdewey:


LOL... what a friggin stupid argument... stupid even for Frank.
I was just paraphrasing an article in a local NOLA paper. They concluded it was apples and oranges.
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719. CaicosRetiredSailor 1:00 AM GMT op 11 september 2011    


Guadeloupe radar
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720. captaincaneguru 1:00 AM GMT op 11 september 2011    
Ive been following tropical cyclone phenomena since I was a kid in the 50's. I cannot recall a season with a large ratio of tropical storms to hurricanes such as this one. Brings to mind the forecasts of the climate dudes who assumed that global warming would mean more and stronger hurricanes, which the press continues to ballyhoo.  But the hurricane researchers/forecasters like Dr. Gray and Dr. Landsea  say, not so fast. Warmer temps can mean stronger upper level winds and less instability- both of which mitigate against stronger storms. So this year: above average SST's, neutral el nino = more tropical cyclones. But where are the cat 4's and cat 5's? Only 2 hurricanes and we are up to letter O??
Of course, it's only 1/2 over and the NW Caribbean / Gomex 'cane peaks have yet to show their hand. But so far into the Cape Verde season, the strong hurricane theories aren't looking good.  

 
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721. cyclonekid 1:03 AM GMT op 11 september 2011    
Quoting captaincaneguru:
Ive been following tropical cyclone phenomena since I was a kid in the 50's. I cannot recall a season with a large ratio of tropical storms to hurricanes such as this one. Brings to mind the forecasts of the climate dudes who assumed that global warming would mean more and stronger hurricanes, which the press continues to ballyhoo.  But the hurricane researchers/forecasters like Dr. Gray and Dr. Landsea  say, not so fast. Warmer temps can mean stronger upper level winds and less instability- both of which mitigate against stronger storms. So this year: above average SST's, neutral el nino = more tropical cyclones. But where are the cat 4's and cat 5's? Only 2 hurricanes and we are up to letter O??
Of course, it's only 1/2 over and the NW Caribbean / Gomex 'cane peaks have yet to show their hand. But so far into the Cape Verde season, the strong hurricane theories aren't looking good.  

 


We are not in a neutral El Nino. We are actually now in a weak La Nina.
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722. Sangria 1:03 AM GMT op 11 september 2011    
Quoting P451:


The creation of such an index is unnecessary and an absolute waste of time.

We already have humidity, dewpoint, and heat index.

Do we really need another system whose scale is between 70 and 80? What's the point?

See, it's already wasting people's time, cause it made me think about it.

There is no value in it whatsoever.


Thanks for your input....really did not mean to waste anyone's time.......thought this was the best time to ask a "somewhat" off tropical storm question since it was slow in here.
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723. HuracanTaino 1:06 AM GMT op 11 september 2011    
Just for the record: Is this the first time that COC of a storm that hasn't been downgraded passes over some land areas and that area isn't under tropical storm watch or warning?
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724. sunlinepr 1:07 AM GMT op 11 september 2011    
Correct me please, but seems like this ULL aproaching from the N, will bring us dry air and make Maria move N?

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725. JLPR2 1:08 AM GMT op 11 september 2011    
Quoting HuracanTaino:
Just for the record: Is this the first time that COC of a storm that hasn't been downgraded passes over some land areas and that are isn't under tropical storm watch or warning?


I think I have seen it done before, but I'm not known for having a good memory.
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726. ShenValleyFlyFish 1:08 AM GMT op 11 september 2011    
Quoting FrankZapper:
What caused more suffering? Katrina or 9-11?
I say you can't compare the two.
I agree. You can't compare apples and oranges even if they are fruit. To compare tragedies is equally absurd.
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727. HuracanTaino 1:10 AM GMT op 11 september 2011    
Quoting JLPR2:


I think I have seen it done before, but I'm not known for having a good memory.
Thank you,but interesting...
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728. Levi32 1:12 AM GMT op 11 september 2011    
Quoting Sangria:


Thanks for your input....really did not mean to waste anyone's time.......thought this was the best time to ask a "somewhat" off tropical storm question since it was slow in here.


You didn't waste any time. I think all he's doing is expressing his opinion about that particular scale. Your question was great and welcomed. Always feel free to ask.
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729. ShenValleyFlyFish 1:12 AM GMT op 11 september 2011    
Quoting P451:


Especially when it utilizes punch cards.



With hanging chads.
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730. CaribBoy 1:14 AM GMT op 11 september 2011    
The recon passed close to me! 18N 63W ^^. More seriously, it seems like we might get some weather from maria.... Impressive convection.
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732. JLPR2 1:17 AM GMT op 11 september 2011    
In this Recon visit we can see Maria has gotten much better organized.
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733. CaribBoy 1:19 AM GMT op 11 september 2011    
During the latter part of the afternoon hours, there was lots of low and dense clouds moving quickly toward the south and delivering some nice showers. Lots of humidity to say the least. Seas were very choppy with gust winds as well (but below ts force for sure).

My location : st martin island. 18N 63W approximatly
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734. shellyweathers 1:19 AM GMT op 11 september 2011    
What do yall think about the wave east of the lesser antilles? Any one of you have pictures of it?
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735. TropicalWeatherGrl88 1:21 AM GMT op 11 september 2011    
I know it's far away, but it is looking like the caribbean disturbance is either going to go into mexico or get pulled north east OTS. Which would pretty much make sense with the set up this year. Especially since it resembles last year and that's what the storms did then too.
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736. JLPR2 1:21 AM GMT op 11 september 2011    
So a question.

Why do the HHs flight level winds seem lower than the surface winds? It's supposed to be the other way around. No?
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737. Sangria 1:22 AM GMT op 11 september 2011    

Levi32
You didn't waste any time. I think all he's doing is expressing his opinion about that particular scale. Your question was great and welcomed. Always feel free to ask.


Thanks....could not quite figure out if it was the topic I asked about, or one of the responses that were a waste of time...:-)
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738. TropicalWeatherGrl88 1:24 AM GMT op 11 september 2011    
Quoting shellyweathers:
What do yall think about the wave east of the lesser antilles? Any one of you have pictures of it?


It will probably track west then head out to sea...
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739. LargoFl 1:24 AM GMT op 11 september 2011    
Quoting CaribBoy:
The recon passed close to me! 18N 63W ^^. More seriously, it seems like we might get some weather from maria.... Impressive convection.
YOU BE CAREFUL OUT THERE
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740. BahaHurican 1:25 AM GMT op 11 september 2011    
Quoting ShenValleyFlyFish:
I agree. You can't compare apples and oranges even if they are fruit. To compare tragedies is equally absurd.
Sure u can compare them: both are fruit, grow on trees, have a skin, edible interior and seeds; both are "good for you".

Of course, it's much easier to contrast them; even in their points of similarity there is intrinsic difference.

Same with tragedies on the scale of 9-11 and Hurricane Katrina. There are similarities, sure; however, the differences make it hard to look at these disasters and class them together in any specific, significant way. This is actually also a good word when it comes to tropical cyclones. People, for example, who expected Katrina to be more or less a repeat of Hurricane Camille were rather surprised.
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741. FrankZapper 1:25 AM GMT op 11 september 2011    
Quoting Levi32:


You didn't waste any time. I think all he's doing is expressing his opinion about that particular scale. Your question was great and welcomed. Always feel free to ask.
Levi, will you be on Barometer Bob again this year?
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743. Grothar 1:26 AM GMT op 11 september 2011    
Building some cold cloud tops now. Wasn't much there a few hours ago.

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744. help4u 1:27 AM GMT op 11 september 2011    
Post 731 it comes from this blog.Need to visit more often.One day a week we have apoloyptic day where we talk about everything that could end the world this week!
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745. hurricanejunky 1:28 AM GMT op 11 september 2011    
In honor of the 51st anniversary of Hurricane Donna, I have put together some of my family's stories and some videos about Hurricane Donna, a storm that will never be forgotten here in Fort Myers, FL and in many other places as well:

CLICK HERE FOR MY HURRICANE DONNA TRIBUTE
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746. BahaHurican 1:28 AM GMT op 11 september 2011    
Quoting Sangria:


Thanks for your input....really did not mean to waste anyone's time.......thought this was the best time to ask a "somewhat" off tropical storm question since it was slow in here.
I think he meant the scale was a WoT, not ur question...

Member Since: 25 oktober 2005 Posts: 19 Comments: 17610
748. KEEPEROFTHEGATE (Mod) 1:30 AM GMT op 11 september 2011    
XX/AOI/XX
mark
8.0n/28.00w
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750. atmoaggie 1:34 AM GMT op 11 september 2011    
Two days of Nate in a radar loop: Link

Landfall loop will be this one: Link
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About JeffMasters
Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.

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