Dr. Jeff Masters' WunderBlog

A Tale of Two Invests
Posted by: Dr. Jeff Masters, 12:17 PM GMT on July 04, 2010 +2
Good morning, everybody, Dr. Rob Carver filling in for Jeff on Independence Day.

Currently, NHC is monitoring two different areas for possible tropical cyclone development. Invest 95L is about 125 miles west-southwest of the mouth of the Mississippi and it doesn't have much thunderstorm activity associated with it. Dry air from the north and strong wind shear have weakened it considerably from yesterday, and NHC believes it has a 10% chance of becoming a tropical cyclone before the feature makes landfall.

Invest 96L is in the western Caribbean sea and bears watching closely. Earlier in the morning, the convection was all on the east side of the circulation center, but thunderstorms have developed on the southwest side. According to the CIMMS wind shear analysis, 96L is on the outskirts of a low wind shear region just east of the Yucatan peninsula. It's also over warm SST's (>29 deg C), so it could intensify. NHC gives it a 20% chance of becoming a tropical cyclone in the next 48 hours. Computer models have 96L going through the Yucatan Channel then turning left and making landfall somewhere near the Rio Grande.


Fig. 1 IR satellite composite from 720AM EDT.

Next Update
My next post will be sometime Monday afternoon/evening. If the situation changes significantly before then, I'll make a new post. In any event, enjoy the holidays...
Categories: Hurricane
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5351. cloudy0day 12:26 AM GMT on July 06, 2010    
Quoting aquak9:
Zombie alert- code red


Am I considered a zombie because I only post once in a while?
Member Since: September 10, 2009 Posts: 0 Comments: 15
5353. IKE 12:27 AM GMT on July 06, 2010    
Quoting Topography:


who the HELL are you calling, JFV???? I am not that individual, ok, taz? clearly, you must be him, since you are always mentioning him on here. Continue to accsue me of being him, and I will report you to teh admin. I am not that infamous fellow. You've got some nerve.



Hmmm.
Member Since: June 9, 2005 Posts: 23 Comments: 37047
5354. docrod 12:27 AM GMT on July 06, 2010    
Quoting IKE:
Correct call by the NHC holding 96L at 30%....



Hope my Texas coast friends are watching. BTW - who roused the rabble around here. Just check back in after a 3 hour time out and whoa. Time to pop more corn and put on another movie. - take care - outta here.
Member Since: April 21, 2006 Posts: 0 Comments: 605
5355. PensacolaDoug 12:27 AM GMT on July 06, 2010    
Here's Joey B's take on 95 this afternoon.

There is no change to my idea on the system in the northern gulf, it is doing what it was supposed to do, but if anything, we are getting a prime example of what is wrong with TPC and why my two suggested ideas.. 1 on how to classify ( closed rotary circulation, gales in on quad and 2) how to judge the intensity of the storm, incorporating pressure and pressure tendency on a 1-10 scale would be better. In any case a forecaster came in and saw what all saw, that this had a vigorous low to mid level circulation that could cause strong winds in a small area, so he upgraded. What should have been done before could have been handled with special tropical disturbance statements, rather than just blowing it off as a 10% chance. That is not to say it should be named, it is to say that the perception is that there is a sudden jump in intensity, when that is plainly not the case! What happened was a change of the shift and someone looking hard at the data and making a judgement call. Of course you and I have to react, to I have to let all my clients know that its the same as has been described, the weather has not changed, just the forecaster for TPC did and decided to handle it differently

You get what I am talking about. And this person has had several "experiences" where he walked into a hornets nest... a storm that was developing without the previous shift even saying anything. For you Texans.. remember the morning of Allison, the 5 am bulletin, or Humberto?

But like I said, if Alex is any indication, we are in for a long season, and I am talking not only about the actual weather, but the explanations I will have to give. It would be funny if it werent so serious, but it has spread to other matters, non weather related ( I dont know how much more economic recovery I can take over here... I feel guilty the way things have been going so good there too)

I am developing a dark side

Now the most obvious problem in the northwest gulf is still forecasted to not line up the low and mid level centers enough so that it wont be a big storm. But here is the problem and why the area from Corpus Christi to the Louisiana coast should be concerned. These large scale pattern development systems need time to develop. One can plainly see a mid level rotation center east of the northern coast of the Yucatan. Gales are being reported from ships south of the west tip of Cuba where the low and mid level flows are lined up. But the system leans southeast from the low level center near the northeast coast of the Yucatan to the mid level center. If such a system were to line up, look out, another case of rapid feedback development. I dont think this will have the time. However I do think and area of tropical storm conditions, with gales and heavy rains, will pinwheel on the right side of the system, and that means the threat of 6-12 hours of heavy rain... and no matter how its classified ( after what we have been seeing, who knows, right) tropical storm like conditions on the upper Texas or Louisiana coast later Wednesday or Thursday


Now, here is why New England has to sleep with one eye open ( Canadian maritimes too) The upper low that is well east of the coast will back southwest the next several days and entrain the energy from the tropical wave near Puerto Rico. There is plenty of heat around, no doubt about that, the ocean is boiling off the east coast relative to the time of the year. With a major ridge building over the central Atlantic and a trough in the middle of the nation, the area southeast of Hatteras would be a nice place for this wave to get entrained into a falling pressure field caused by the upper low backing, and feedback and develop. A TPC nightmare of course since they tend to ignore things like that, and then its a 50-50 chance if it ever gets classified ( Jersey Devil) anyway. But there is some African influence here and the MJO is locked in octant 2, so one never can be sure if the whack a mole pattern doesnt deliver in cases like this.

Notes and asides: I see the polar temp has been below normal much of the summer
Member Since: July 25, 2006 Posts: 0 Comments: 4828
5356. calder 12:27 AM GMT on July 06, 2010    
Quoting F4PHANTOM:
Anyone have legitimate coordinates on 96L ?


no real legitimate coords as multiple vortices still trying to consolidate. There are plenty of guesses though
Member Since: July 26, 2006 Posts: 0 Comments: 412
5357. PensacolaBuoy 12:27 AM GMT on July 06, 2010    
Quoting leo305:
on radar 95L looks like its moving WNW over water, but the NHC said its inland?

I'm with you on this. I'm not ready to write off 95L. As long as the COC is over water, it has a risk of developing. It seems to be hugging the coastline and further closing its circulation.
Member Since: July 28, 2006 Posts: 0 Comments: 348
5358. taco2me61 12:27 AM GMT on July 06, 2010    
Quoting mobilebayal:


Hey Taco!

Hey There Mobilebay... You staying dry today???
Although it has been very "Hot & Sticky" this aternoon....

Taco :o)
Member Since: July 7, 2005 Posts: 6 Comments: 2763
5360. xcool 12:27 AM GMT on July 06, 2010    
guess time go back new website here go drama .
Member Since: September 26, 2009 Posts: 2 Comments: 15503
5361. aquak9 12:27 AM GMT on July 06, 2010    
Quoting F4PHANTOM:
Anyone have legitimate coordinates on 96L ?


that's like asking for legitimate answers from BP.
Member Since: August 13, 2005 Posts: 163 Comments: 25009
5362. photonchaser 12:28 AM GMT on July 06, 2010    
Back to zero again. They just can't make up their minds.
Member Since: June 3, 2004 Posts: 1 Comments: 134
5363. aquak9 12:28 AM GMT on July 06, 2010    
whoa...angry zombie.
Member Since: August 13, 2005 Posts: 163 Comments: 25009
5364. MiamiHurricanes09 12:29 AM GMT on July 06, 2010    
Lol. Ok, although this blog is giving me a good laugh, it's time to head out.
Member Since: September 2, 2009 Posts: 129 Comments: 19976
5365. AllBoardedUp 12:29 AM GMT on July 06, 2010    
Quoting FLdewey:


Take it easy... Taz calls everyone JFV at least once... it's like an initiation.
It gets old!
Member Since: July 25, 2008 Posts: 0 Comments: 585
5367. JLPR2 12:29 AM GMT on July 06, 2010    
Quoting IKE:



Hmmm.


yeah, it couldn't be more obvious LOL!

I recommend a grammar check plug-in for firefox XD
Member Since: September 4, 2007 Posts: 7 Comments: 7487
5368. mobilebayal 12:30 AM GMT on July 06, 2010    
Quoting taco2me61:

Hey There Mobilebay... You staying dry today???
Although it has been very "Hot & Sticky" this aternoon....

Taco :o)

We had one quick shower around 5pm. Did you go to any of the beaches today?
Member Since: August 17, 2007 Posts: 0 Comments: 1097
5369. xcool 12:30 AM GMT on July 06, 2010    
all drama & jfv get old .
Member Since: September 26, 2009 Posts: 2 Comments: 15503
5370. RobertM320 12:30 AM GMT on July 06, 2010    
Quoting Topography:


who the HELL are you calling, JFV???? I am not that individual, ok, taz? clearly, you must be him, since you are always mentioning him on here. Continue to accsue me of being him, and I will report you to teh admin. I am not that infamous fellow. You've got some nerve.


???
Member Since: September 27, 2007 Posts: 0 Comments: 111
5371. calder 12:30 AM GMT on July 06, 2010    
Quoting aquak9:
whoa...angry zombie.


ignored. byebye
Member Since: July 26, 2006 Posts: 0 Comments: 412
5372. SiestaCpl 12:30 AM GMT on July 06, 2010    
Quoting Hurricanes101:


NHC says it made landfall


Yes... and they are..well not always that exact...as it can touch the shore will the COC and then turn West ..as it did and lose contact with the coast..in any case it did not continue inland as you can see on any radar loop...as far as threat..it is minimal but it will continue to moisten the atmosphere towards TX in advance of any other storm that comes into the gulf this week.
Member Since: June 26, 2008 Posts: 0 Comments: 326
5374. JLPR2 12:30 AM GMT on July 06, 2010    
Quoting MiamiHurricanes09:
Lol. Ok, although this blog is giving me a good laugh, it's time to head out.


Yeah, its entertaining. XD
Member Since: September 4, 2007 Posts: 7 Comments: 7487
5375. mrsalagranny 12:31 AM GMT on July 06, 2010    
Quoting taco2me61:


You are so welcome sweetie. I also think we will
be getting more rain from 95L as it pushes moisture
from our East toward the west arcross Alabama.

Taco :o)
We have finally gotten a lil break in Semmes right now.I know more is on the way.LOL!!!!!!!
Member Since: June 6, 2010 Posts: 0 Comments: 732
5376. aquak9 12:31 AM GMT on July 06, 2010    
oh who can leave with this sort of excitement?
Member Since: August 13, 2005 Posts: 163 Comments: 25009
5377. calder 12:31 AM GMT on July 06, 2010    
Quoting F4PHANTOM:
Since there are no actual coord, then you can throw ALL the models out. No correct location to initialize.


exactly
Member Since: July 26, 2006 Posts: 0 Comments: 412
5378. Grothar 12:32 AM GMT on July 06, 2010    
Quoting aquak9:
grothar- SANITY!!!

robertm- one poof and one flag is no big deal. You're fine.

But when you start saying "poof" to your coworkers....


Hey, aqua, Hope that was a compliment. I very rarely get accused of sanity. Strange mood tonight on the blog.
Member Since: July 17, 2009 Posts: 57 Comments: 19554
5379. SiestaCpl 12:32 AM GMT on July 06, 2010    
Off for dinner here....enjoy all! Quite the season to watch...calm is needed by all to keep this a useable space for all...
Member Since: June 26, 2008 Posts: 0 Comments: 326
5381. Patrap 12:32 AM GMT on July 06, 2010    
Snorrrrrrrrrrrrrrre...

...Klunk!
Member Since: July 3, 2005 Posts: 372 Comments: 111632
5382. bappit 12:33 AM GMT on July 06, 2010    
Quoting Patrap:


I tried Logic here once..

And well..that didnt pan out too well.

Practice makes perfect. :)
Member Since: May 18, 2006 Posts: 3 Comments: 4388
5384. SiestaCpl 12:33 AM GMT on July 06, 2010    
Quoting Patrap:
Snorrrrrrrrrrrrrrre...

...Klunk!


Passing you a glass of something strong on the way to dinner....
Member Since: June 26, 2008 Posts: 0 Comments: 326
5385. IKE 12:33 AM GMT on July 06, 2010    
Quoting xcool:
all drama & jfv get old .


So does vulgarity.


Quoting aquak9:
oh who can leave with this sort of excitement?


LOL....nothing on TV this entertaining.
Member Since: June 9, 2005 Posts: 23 Comments: 37047
5386. msgambler 12:34 AM GMT on July 06, 2010    
Quoting aquak9:
oh who can leave with this sort of excitement?
It's like a drug isn't it Aqua
Member Since: February 27, 2010 Posts: 0 Comments: 1120
5388. Kristina40 12:34 AM GMT on July 06, 2010    
Why are we posting pictures of Ferris Bueller?
Member Since: June 27, 2010 Posts: 0 Comments: 681
5389. Patrap 12:34 AM GMT on July 06, 2010    


Member Since: July 3, 2005 Posts: 372 Comments: 111632
5392. mrsalagranny 12:34 AM GMT on July 06, 2010    
Hey wgy did you say my name was a disquise?
Member Since: June 6, 2010 Posts: 0 Comments: 732
5394. Tazmanian 12:35 AM GMT on July 06, 2010    
Quoting FLdewey:



you been re ported
Member Since: May 21, 2006 Posts: 5088 Comments: 111360
5395. xcool 12:35 AM GMT on July 06, 2010    
KEEPEROFTHEGATE so .i'm not jfv jr here
Member Since: September 26, 2009 Posts: 2 Comments: 15503
5396. Patrap 12:35 AM GMT on July 06, 2010    
my eyes are lost ..forever.
it burns,,,it burns I tell yas


Member Since: July 3, 2005 Posts: 372 Comments: 111632
5398. aquak9 12:35 AM GMT on July 06, 2010    
calder- thank you!!!

grother- yes a compliment.

ike- pass the bottle
Member Since: August 13, 2005 Posts: 163 Comments: 25009
5399. taco2me61 12:35 AM GMT on July 06, 2010    
Quoting mobilebayal:

We had one quick shower around 5pm. Did you go to any of the beaches today?

No I'm still on call and had to work all day
:o(

I will be going this weekend to take some pictures though....
I need to know how the clean-up is going...
No rain at my house at 5pm but could hear thunder...
How was your day?

Taco :o)
Member Since: July 7, 2005 Posts: 6 Comments: 2763
5400. xcool 12:35 AM GMT on July 06, 2010    
FLdewey lol
Member Since: September 26, 2009 Posts: 2 Comments: 15503
5401. AllStar17 12:35 AM GMT on July 06, 2010    
Where is the new blog?

"My next post will be sometime Monday afternoon/evening."
Member Since: June 29, 2009 Posts: 13 Comments: 5135

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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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