Dr. Jeff Masters' WunderBlog

A Tale of Two Invests
Posted by: Dr. Jeff Masters, 12:17 GMT le 04 juillet 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...
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1651. BahaHurican 22:17 GMT le 04 juillet 2010    
Use ur tools, folks.

Don't quote inflammatory / derogatory remarks. Use [-], [!] and [ignore].

DO post interesting links, imagery and articles that relate to the wx events being discussed.

Don't kill off all the crows in the world by making wild unsubstantiated (to replace a shorter word lol) guesses about the wx; use ur tools!
Member Since: 25 octobre 2005 Posts: 19 Comments: 17961
1652. Tazmanian 22:17 GMT le 04 juillet 2010    
Quoting sarahjola:
why is 95l not firing up convection? tia:)



95L is under a lot of dry air
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1653. Patrap 22:17 GMT le 04 juillet 2010    
TDWR High Definition Radar
New Orleans, Base Reflectivity 0.60 Degree Elevation Range 225 NMI

Member Since: 3 juillet 2005 Posts: 377 Comments: 112998
1655. Hhunter 22:18 GMT le 04 juillet 2010    
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1656. RitaEvac 22:18 GMT le 04 juillet 2010    
I aint got tiiiiime for all this, going to Vegas on the 6th and returning on the 9th
1657. CoffinWood 22:18 GMT le 04 juillet 2010    
Quoting Tazmanian:
am sorry all i guss i did yet thing out of hand a little but am sorry so what this forget it and get back too the weather


That's a wonderful idea. Too many important things on the horizon that need to be monitored.
Member Since: 19 juin 2010 Posts: 0 Comments: 113
1658. bappit 22:19 GMT le 04 juillet 2010    
Quoting Patrap:
TDWR High Definition Radar
New Orleans, Base Reflectivity 0.60 Degree Elevation Range 225 NMI


Looks like it is headed north at a steady pace.
Member Since: 18 mai 2006 Posts: 5 Comments: 4427
1659. HurricaneSwirl 22:19 GMT le 04 juillet 2010    
CIMSS took 95L off, though it's still on ATCF and the Navy site so idk why.
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1661. MiamiHurricanes09 22:19 GMT le 04 juillet 2010    
96L looking very impressive on satellite imagery. If it wasn't for the lack of a well-defined surface circulation I would expect to see red at 8PM. With all factors in place, 96L should be given a 50% chance at 8PM on the TWO, imo.

Member Since: 2 septembre 2009 Posts: 129 Comments: 20011
1662. Patrap 22:20 GMT le 04 juillet 2010    
Quoting bappit:

Looks like it is headed north at a steady pace.


On the move..yep
Member Since: 3 juillet 2005 Posts: 377 Comments: 112998
1663. medicroc 22:20 GMT le 04 juillet 2010    
Quoting sarahjola:
why is 95l not firing up convection? tia:)

Link
Lots of dry air
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1664. Claudette1234 22:21 GMT le 04 juillet 2010    
GFS 18Z 72 hours



I dont said GFS developed 96L i just say move perturbation near Louisiana at 72hours is the low of 1011mb

Link
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1665. xcool 22:22 GMT le 04 juillet 2010    
here goooooooooo 96L BIG MOM
Member Since: 26 septembre 2009 Posts: 2 Comments: 15526
1666. Patrap 22:22 GMT le 04 juillet 2010    
96L Big Bada Boom Rainbow loop

Click the MSLP box for steering
Member Since: 3 juillet 2005 Posts: 377 Comments: 112998
1667. EricSFL 22:22 GMT le 04 juillet 2010    
Quoting bappit:

Good ole Jindal. Say what?

Hmmmm, someone was subtly promoting their personal business on here a couple days ago. Is this a sneak political ad?


Based on what I have seen, Gov. Jindal has been on top of the Oil Spill situation since day one. At least much more than Mr. Independent Charlie Christ has.
Member Since: 26 mai 2010 Posts: 0 Comments: 759
1668. BahaHurican 22:22 GMT le 04 juillet 2010    
re. 1634 AstroHurricane....

did u post any info about it on ur blog? How did things go? (I wasn't able to be in the blog during the "crucial" moments.... :o(

Member Since: 25 octobre 2005 Posts: 19 Comments: 17961
1669. RitaEvac 22:23 GMT le 04 juillet 2010    
I gotta downcast, 95L not going to do anything, and 96L not much either. In Vegas this coming week and better not be anything going on
1670. MiamiHurricanes09 22:23 GMT le 04 juillet 2010    
Quoting medicroc:

Red
I see absolutely no reason for 95L to be upgraded furthermore than the current percentage it has.
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1671. Patrap 22:23 GMT le 04 juillet 2010    
I'll alert RENO 911
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1672. SiestaCpl 22:23 GMT le 04 juillet 2010    
Quoting Patrap:


On the move..yep


Hi from near New Orleans...or more particularly Hammond..just moved for Wife's job from Sarasota Fl...and 95 if following us..LOL..its small and kind of cute so far..hope it stays that way...that dry slot can really be felt up here.
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1673. plywoodstatenative 22:24 GMT le 04 juillet 2010    
we have some sort of rotation over southern Florida. any ideas?
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1674. RitaEvac 22:24 GMT le 04 juillet 2010    
Reno 911 a little ways off Pat
1675. xcool 22:24 GMT le 04 juillet 2010    
96L GET NAME SOON.
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1676. louisianaweatherguy 22:25 GMT le 04 juillet 2010    
soo..... 96L DOESN'T have a circulation?? hmmm....
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1677. Patrap 22:25 GMT le 04 juillet 2010    
Geezum,..

Now Politics.

I need another bev...
Quoting RitaEvac:
Reno 911 a little ways off Pat


Just like yer post's



LOL


Boom,bada BING.

Member Since: 3 juillet 2005 Posts: 377 Comments: 112998
1678. RitaEvac 22:25 GMT le 04 juillet 2010    
100 degrees and 10% humidity, ah refreshing heat in the desert
1679. SiestaCpl 22:26 GMT le 04 juillet 2010    
Looks like 96L has someplace to dress for and in a hurry...wrapping up quickly.
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1680. MiamiHurricanes09 22:26 GMT le 04 juillet 2010    
Quoting louisianaweatherguy:
soo..... 96L DOESN'T have a circulation?? hmmm....
96L does have a circulation, it just isn't closed.
Member Since: 2 septembre 2009 Posts: 129 Comments: 20011
1681. BahaHurican 22:26 GMT le 04 juillet 2010    
Hey SiestaCpl,

I've been trying to find out since u started posting here what kinda snake that is in ur avatar...

Member Since: 25 octobre 2005 Posts: 19 Comments: 17961
1682. Patrap 22:26 GMT le 04 juillet 2010    
Quoting SiestaCpl:


Hi from near New Orleans...or more particularly Hammond..just moved for Wife's job from Sarasota Fl...and 95 if following us..LOL..its small and kind of cute so far..hope it stays that way...that dry slot can really be felt up here.


Sure can feel that dry air..it moved in here on the S shore after that Morning round of Storms.
Sweet out at the moment.


Welcome to Louisiana
Member Since: 3 juillet 2005 Posts: 377 Comments: 112998
1683. bappit 22:27 GMT le 04 juillet 2010    
Quoting EricSFL:


Based on what I have seen, Gov. Jindal has been on top of the Oil Spill situation since day one. At least much more than Mr. Independent Charlie Christ has.

Yah, Jindal has national ambitions. He was down on the coast for every photo op he could get while the legislature was in session, but ... this is strictly off topic.
Member Since: 18 mai 2006 Posts: 5 Comments: 4427
1684. SiestaCpl 22:27 GMT le 04 juillet 2010    
Just left FL West coast and the drop to dry air here North of NOLA is refreshing...
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1686. Bordonaro 22:28 GMT le 04 juillet 2010    
Quoting louisianaweatherguy:
soo..... 96L DOESN'T have a circulation?? hmmm....

Not yet at the surface. Good vorticity at 700-850MB, a mid level circulation will slowly translate to the surface over the next 24 hrs or so. As soon as the NHC discovers a surface L, we will have TD 2 for sure :o)
Member Since: 25 août 2009 Posts: 20 Comments: 6785
1687. BahaHurican 22:28 GMT le 04 juillet 2010    
I agree 96L looks much better than this p.m., but still don't see NHC taking it over 50% on this discussion....
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1688. IKE 22:28 GMT le 04 juillet 2010    
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1689. blsealevel 22:28 GMT le 04 juillet 2010    
Will their be enough mosture in the GOM by the time 96L gets in their or will the dry air pull west or east come next week?
Member Since: 23 août 2008 Posts: 0 Comments: 1916
1690. RitaEvac 22:28 GMT le 04 juillet 2010    
96L looks to follow ALex's path, at least thats what local media is saying in SE TX, no worry and enjoy your week.
1691. Patrap 22:28 GMT le 04 juillet 2010    
Quoting SiestaCpl:
Just left FL West coast and the drop to dry air here North of NOLA is refreshing...


I concur,..

shame it aint going to last.

I advise also to make preps early this week just in case 96L decides to be all it can be and move north.

Member Since: 3 juillet 2005 Posts: 377 Comments: 112998
1692. MiamiHurricanes09 22:28 GMT le 04 juillet 2010    
Quoting Bordonaro:

Not yet at the surface. G.ood vorticity at 700-850MB, a mid level circulation will slowly translate to the surface over the next 24 hrs or so. As soon as the NHC discovers a surface L, we will have TD 2 for sure :o)
I would say that there is a low at the surface, it just remains broad and weak.
Member Since: 2 septembre 2009 Posts: 129 Comments: 20011
1693. hurricane47 22:29 GMT le 04 juillet 2010    
The history of the Western Caribbean is these systems are slow to organize unless something extraordinary comes into play. AL 96 is a case in point.
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1694. SiestaCpl 22:30 GMT le 04 juillet 2010    
Quoting Patrap:


Sure can feel that dry air..it moved in here on the S shore after that Morning round of Storms.
Sweet out at the moment.


Welcome to Louisiana


First time for me Patrap, wife has been here a couple of weeks...seems like home! Wife's famly is 1st gen French and Indian....and me a Indian from the upper midwest...so I like the people here...seems like home.
Member Since: 26 juin 2008 Posts: 0 Comments: 345
1695. Bordonaro 22:30 GMT le 04 juillet 2010    
Quoting MiamiHurricanes09:
I would say that there is a low at the surface, it just remains broad and weak.

I tend to agree one may be developing. 96L is looking very healthy.
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1696. Patrap 22:30 GMT le 04 juillet 2010    
Also..speaking as a Portlight rep in this post.

Please check out the Portlight blog as we had a request from a Mexican Blogger suffering from Alex's Impact and were sending water ASAP to their requested area thru some contacts.

Member Since: 3 juillet 2005 Posts: 377 Comments: 112998
1698. Patrap 22:31 GMT le 04 juillet 2010    
Quoting SiestaCpl:


First time for me Patrap, wife has been here a couple of weeks...seems like home! Wife's famly is 1st gen French and Indian....and me a Indian from the upper midwest...so I like the people here...seems like home.


Well were like a good Gumbo down here,..all the more mix is best for the pot.

Thats a fine heritage too.

Member Since: 3 juillet 2005 Posts: 377 Comments: 112998
1700. Claudette1234 22:32 GMT le 04 juillet 2010    
Quoting IKE:
18Z NOGAPS through 72 hours....


Hey IKE,

Yes is the same track as GFS 18Z. I agree this is the possible track by the moment
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1701. bappit 22:32 GMT le 04 juillet 2010    
96L has an upper anticyclone to its west much like Alex did when forming.
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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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