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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2301. beell 12:42 AM GMT on July 05, 2010    
Member Since: September 11, 2007 Posts: 125 Comments: 12890
2302. Tazmanian 12:42 AM GMT on July 05, 2010    
Quoting goalexgo:
95L is a joke. NHC really needs to stop pushing it.



noted
Member Since: May 21, 2006 Posts: 5088 Comments: 111360
2303. xcool 12:42 AM GMT on July 05, 2010    
Member Since: September 26, 2009 Posts: 2 Comments: 15503
2304. TexasHurricane 12:42 AM GMT on July 05, 2010    
Quoting helove2trac:
but opal didnt go to texas


yes, I know....not sure if he was referring to the same area or the same strength but different location.
Member Since: July 2, 2009 Posts: 0 Comments: 2811
2305. Levi32 12:42 AM GMT on July 05, 2010    
Quoting USSINS:


Happy 4th, Levi, but go ahead and hurry up and give us the 411 on 95L. Small system, building convection on the west side now. An overnight surprise maybe? What's your take?



I say it's a gonner. The heat buildup to its south and east is too much for it, and it's not big enough to compete. I don't think we need to worry about it anymore.
Member Since: November 24, 2005 Posts: 586 Comments: 25459
2306. Patrap 12:43 AM GMT on July 05, 2010    
Member Since: July 3, 2005 Posts: 372 Comments: 111626
2307. MiamiHurricanes09 12:43 AM GMT on July 05, 2010    
Quoting TampaSpin:


Why was that a surprise....NO surprise here?
The surprise is that it shouldn't of gotten a T1.0 in the first place, which it did get.
Member Since: September 2, 2009 Posts: 129 Comments: 19976
2309. Cavin Rawlins 12:43 AM GMT on July 05, 2010    
Quoting beell:


NDBC 42056


What a drop
Member Since: July 24, 2005 Posts: 407 Comments: 19076
2310. Levi32 12:43 AM GMT on July 05, 2010    
Quoting beell:


NDBC 42056


Oh snap.
Member Since: November 24, 2005 Posts: 586 Comments: 25459
2311. pottery 12:44 AM GMT on July 05, 2010    
Quoting BahaHurican:
Sorry pple, but every time I see that graphic again, I think "96L and the Yellows"... like a 50s doowop group.... lol

Good one, Baha!
Member Since: October 24, 2005 Posts: 0 Comments: 20718
2312. Dakster 12:44 AM GMT on July 05, 2010    
Quoting helove2trac:
but opal didnt go to texas


True... Stormw was thinking of a setup like Opal. If it goes to Texas it could be like Ike...
Member Since: March 10, 2006 Posts: 0 Comments: 4942
2313. Tazmanian 12:44 AM GMT on July 05, 2010    
Quoting Levi32:


Oh snap.



thats not good right ?
Member Since: May 21, 2006 Posts: 5088 Comments: 111360
2314. aspectre 12:45 AM GMT on July 05, 2010    
SkyePony was laughing at the 4circles last night;
ie the 00Z CMC placed 4lows on those 4circles then moved them:
Circle1(95L)'s low dissipated after heading northwest into a western Louisiana landfall.
Circle3(Bahama)'s low dissipated before hitting Florida.
Circle2(96L)'s low went straight to CorpusChristi.
Circle4(LesserAntilles)'s low headed toward Georgia, then turned northeast just left of the Bahamas and was heading toward Massachusetts.
A 5th low began development at ~34W as a CapeVerde ITCZ wave then turned into a low as it headed west of WNW to the LesserAntilles. After passing through those islands, it was heading through the highTropicalCycloneHeatPotential zone south of Jamaica when the run stopped.

I wonder if NHC will continue to follow CMC's lead with a 5th circle soon.

Member Since: August 21, 2007 Posts: 0 Comments: 4846
2315. HurricaneSwirl 12:45 AM GMT on July 05, 2010    
Quoting Tazmanian:



thats not good right ?


Not good at all..
Member Since: July 7, 2008 Posts: 2 Comments: 3237
2316. Cavin Rawlins 12:45 AM GMT on July 05, 2010    
Quoting StormW:


Well, if you go to the shear map (site) the 200mb flow on the map I posted would be a weak trof to the west of 96L, and a upper level anticyclone, albeit small, north of 96L...at around that time. The resulting flow would have the tendency to ventilate the area as it did Opal.


I see what your saying.
Member Since: July 24, 2005 Posts: 407 Comments: 19076
2317. MiamiHurricanes09 12:45 AM GMT on July 05, 2010    
Station 42056 (LLNR 110) - Yucatan Basin
19.874 N 85.059 W


Conditions at 42056 as of
(6:50 pm CDT)
2350 GMT on 07/04/2010:


Wind Direction (WDIR): SE ( 140 deg true )
5-day plot - Wind Speed Wind Speed (WSPD): 9.7 kts
5-day plot - Wind Gust Wind Gust (GST): 13.6 kts
5-day plot - Wave Height Wave Height (WVHT): 6.2 ft
5-day plot - Dominant Wave Period Dominant Wave Period (DPD): 8 sec
5-day plot - Average Period Average Period (APD): 6.2 sec
5-day plot - Mean Wave Direction Mean Wave Direction (MWD): ESE ( 123 deg true )
5-day plot - Atmospheric Pressure Atmospheric Pressure (PRES): 29.79 in
5-day plot - Pressure Tendency Pressure Tendency (PTDY): -0.06 in ( Falling )

5-day plot - Air Temperature Air Temperature (ATMP): 79.0 °F
5-day plot - Water Temperature Water Temperature (WTMP): 85.1 °F
5-day plot - Dew Point Dew Point (DEWP): 75.6 °F
5-day plot - Heat Index Heat Index (HEAT): 82.9 °F

Member Since: September 2, 2009 Posts: 129 Comments: 19976
2318. Levi32 12:46 AM GMT on July 05, 2010    
Low-level steering:



Mid-level steering:

Member Since: November 24, 2005 Posts: 586 Comments: 25459
2319. Patrap 12:46 AM GMT on July 05, 2010    
The Alex comparison can drift away as this 96L is a much more organized system in this stage of its new Life.

Plus..the System will tend to make the Gom a lot further N thru the Yucatan proper
Member Since: July 3, 2005 Posts: 372 Comments: 111626
2320. Levi32 12:46 AM GMT on July 05, 2010    
Quoting Tazmanian:



thats not good right ?


A pressure drop like that in the tropics is never good.
Member Since: November 24, 2005 Posts: 586 Comments: 25459
2321. helove2trac 12:46 AM GMT on July 05, 2010    
well if it is the same setup as opal shouldnt it follow the same path?
2322. HurricaneSwirl 12:46 AM GMT on July 05, 2010    
Station 42056

5-day plot - Wind Direction Wind Direction (WDIR): SE ( 140 deg true )
5-day plot - Wind Speed Wind Speed (WSPD): 9.7 kts
5-day plot - Wind Gust Wind Gust (GST): 13.6 kts
5-day plot - Wave Height Wave Height (WVHT): 6.2 ft
5-day plot - Dominant Wave Period Dominant Wave Period (DPD): 8 sec
5-day plot - Average Period Average Period (APD): 6.2 sec
5-day plot - Mean Wave Direction Mean Wave Direction (MWD): ESE ( 123 deg true )
5-day plot - Atmospheric Pressure Atmospheric Pressure (PRES): 29.79 in
5-day plot - Pressure Tendency Pressure Tendency (PTDY): -0.06 in ( Falling )
5-day plot - Air Temperature Air Temperature (ATMP): 79.0 °F
5-day plot - Water Temperature Water Temperature (WTMP): 85.1 °F
5-day plot - Dew Point Dew Point (DEWP): 75.6 °F
5-day plot - Heat Index Heat Index (HEAT): 82.9 °F
Member Since: July 7, 2008 Posts: 2 Comments: 3237
2323. MiamiHurricanes09 12:46 AM GMT on July 05, 2010    
Quoting beell:


NDBC 42056
Very impressive.
Member Since: September 2, 2009 Posts: 129 Comments: 19976
2324. Tazmanian 12:46 AM GMT on July 05, 2010    
when are the new update on wind speeds for 96L out may be will have 97L by then
Member Since: May 21, 2006 Posts: 5088 Comments: 111360
2325. Cavin Rawlins 12:46 AM GMT on July 05, 2010    
Deepening is not a problem in 2010.
Member Since: July 24, 2005 Posts: 407 Comments: 19076
2326. Bordonaro 12:47 AM GMT on July 05, 2010    
Quoting Weather456:


What a drop

Any idea what is going on? A pressure drop of 0.06" in one hour? Could it be from 96L's outflow, creating the big line of showers/t-storms over the Yucatan Peninsula causing the pressure drop?
Member Since: August 25, 2009 Posts: 20 Comments: 6785
2327. lordhuracan01 12:47 AM GMT on July 05, 2010    
2005

28 NAMED STORM



2010

A 20
B 25
C 30
D ?
Member Since: August 11, 2009 Posts: 0 Comments: 225
2328. MiamiHurricanes09 12:47 AM GMT on July 05, 2010    
96L moving NW/NNW.

AL, 96, 2010070500, , BEST, 0, 169N, 829W, 30, 1009, DB,
Member Since: September 2, 2009 Posts: 129 Comments: 19976
2330. Patrap 12:47 AM GMT on July 05, 2010    
Member Since: July 3, 2005 Posts: 372 Comments: 111626
2331. sarahjola 12:47 AM GMT on July 05, 2010    
Quoting Patrap:
looks very organized. is it a t.d already in your opinion? should we be worried about 96l in our part of the woods? tia:)
Member Since: September 10, 2008 Posts: 0 Comments: 1291
2332. Tazmanian 12:47 AM GMT on July 05, 2010    
dos any one think will have a TD by sunday PM?
Member Since: May 21, 2006 Posts: 5088 Comments: 111360
2333. fatlady99 12:47 AM GMT on July 05, 2010    
2334. HurricaneSwirl 12:47 AM GMT on July 05, 2010    
The blog sure is picking up speed.
Member Since: July 7, 2008 Posts: 2 Comments: 3237
2335. Bordonaro 12:48 AM GMT on July 05, 2010    
Quoting lordhuracan01:
2005

28 NAMED STORM



2010

A 20
B 25
C 30
D ?

D) ?, about 15-18
Member Since: August 25, 2009 Posts: 20 Comments: 6785
2336. Cavin Rawlins 12:48 AM GMT on July 05, 2010    
Quoting helove2trac:
well if it is the same setup as opal shouldnt it follow the same path?


the upper environment in relation to intensity should not be confused with the upper environment in relation to track.
Member Since: July 24, 2005 Posts: 407 Comments: 19076
2337. JLPR2 12:48 AM GMT on July 05, 2010    
Just came back and my jaw dropped, we got 4 circles o.O
That's impressive for early July!
Member Since: September 4, 2007 Posts: 7 Comments: 7487
2338. MiamiHurricanes09 12:48 AM GMT on July 05, 2010    
Quoting Tazmanian:
dos any one think will have a TD by sunday PM?
I think we will see TD#2 after recon investigates.
Member Since: September 2, 2009 Posts: 129 Comments: 19976
2339. RitaEvac 12:48 AM GMT on July 05, 2010    
Well Pat they better start getting BP outta there, cuz this one is gonna stir those waters up more than Alex did
2340. Levi32 12:48 AM GMT on July 05, 2010    
Quoting MiamiHurricanes09:
Alex moving NW/NNW.

AL, 96, 2010070500, , BEST, 0, 169N, 829W, 30, 1009, DB,


Alex? Lol.

It's the son of Alex.

Or actually maybe the daughter?
Member Since: November 24, 2005 Posts: 586 Comments: 25459
2342. Dakster 12:48 AM GMT on July 05, 2010    
Quoting MiamiHurricanes09:
Alex moving NW/NNW.

AL, 96, 2010070500, , BEST, 0, 169N, 829W, 30, 1009, DB,


Alex???
Member Since: March 10, 2006 Posts: 0 Comments: 4942
2343. Tazmanian 12:48 AM GMT on July 05, 2010    
Quoting lordhuracan01:
2005

28 NAMED STORM



2010

A 20
B 25
C 30
D ?



C
Member Since: May 21, 2006 Posts: 5088 Comments: 111360
2344. msgambler 12:48 AM GMT on July 05, 2010    
Quoting MiamiHurricanes09:
Alex moving NW/NNW.

AL, 96, 2010070500, , BEST, 0, 169N, 829W, 30, 1009, DB,
Alex was last week
Member Since: February 27, 2010 Posts: 0 Comments: 1120
2345. Patrap 12:49 AM GMT on July 05, 2010    
Quoting sarahjola:
looks very organized. is it a t.d already in your opinion? should we be worried about 96l in our part of the woods? tia:)


Im going to stay up on it this early week as it has potential to Impact someone as the Model runs show.

Prepare now and ones ahead of the rat race.
Member Since: July 3, 2005 Posts: 372 Comments: 111626
2346. MiamiHurricanes09 12:49 AM GMT on July 05, 2010    
Quoting Levi32:


Alex? Lol.

It's the son of Alex.

Or actually maybe the daughter?
LOL, my bad.
Member Since: September 2, 2009 Posts: 129 Comments: 19976
2347. helove2trac 12:50 AM GMT on July 05, 2010    
Taz where do you live? its already sunday pm
2348. Patrap 12:50 AM GMT on July 05, 2010    
Quoting RitaEvac:
Well Pat they better start getting BP outta there, cuz this one is gonna stir those waters up more than Alex did


BP can stay..if they want.


I could care less.

For all they spend on weather Contracts from Private Firms,,
They could most likely get 3-4 good bloggers here.
Member Since: July 3, 2005 Posts: 372 Comments: 111626
2349. MiamiHurricanes09 12:50 AM GMT on July 05, 2010    
Quoting HurricaneSwirl:
The blog sure is picking up speed.
Well there are 4 circles out there, lol.
Member Since: September 2, 2009 Posts: 129 Comments: 19976
2350. weathermancer 12:50 AM GMT on July 05, 2010    
Quoting SiestaCpl:


That seems imminent ..good eyes if you ask me...


"eye eye"... said the little 'cane that could.
Member Since: August 29, 2009 Posts: 10 Comments: 481
2351. Drakoen 12:50 AM GMT on July 05, 2010    
Buoy 42057 which is closer to 96L is reporting a pressure around 1012mb...
Member Since: October 28, 2006 Posts: 57 Comments: 29010

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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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