Dr. Jeff Masters' WunderBlog

New African disturbance 96L likely to develop
Posted by: Dr. Jeff Masters, 2:55 PM GMT en Septiembre 07, 2009 +1
A tropical wave (96L) that emerged off the coast of Africa yesterday has organized rather quickly, and will likely become a tropical depression by Tuesday night. Satellite imagery from the European satellite shows a well-organized circulation, but not enough heavy thunderstorm activity near the center of circulation to be considered a tropical depression. The storm is far enough south that the dry air of the Saharan Air Layer is not a major impediment to development. Wind shear is moderate, 10 - 15 knots, and ocean temperatures are 1 - 2°C above the threshold needed for tropical cyclone formation.


Figure 1. Morning satellite image of 96L, off the coast of Africa. The remains of disturbance 95L, which are under 30 - 40 knots of wind shear, can be seen at upper left.

The forecast for 96L
Most of the models develop 96L, and the chances are that this disturbance will become Tropical Storm Fred later this week. The system will initially move west-northwest, but by Thursday, a strong trough of low pressure passing to 96L's north will pull the storm to the northwest, and may be capable of fully recurving the storm to the northeast. However, most of the models foresee that 96L will not move far enough north for this to happen, and that the storm will have to wait for the next trough of low pressure. With the steering pattern for this year continuing to feature plenty of deep troughs of low pressure moving off the U.S. East Coast, the odds of 96L making it all the way across the Atlantic to threaten land areas appear low. Still, much that is unexpected can and does happen in the world of tropical meteorology, and 96L bears watching.

North Carolina low
An area of concentrated thunderstorms has developed off the North Carolina coast in association with the remains of an old cold front. This system is under about 20 - 30 knots of shear, and is not tropical. However, it will bring heavy rain to eastern North Carolina today and Tuesday, as the storm slides north-northeastward along the coast.

I'll have an update Tuesday.

Jeff Masters
Categories: Hurricane
  Permalink | A A A
Reader Comments
Display: 0, 50, 100, 200 Sort: Newest First - Order Posted
Viewing: 1401 - 1451

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35Blog Index

1401. serialteg 3:45 AM GMT en Septiembre 08, 2009    
/
Member Since: Agosto 22, 2006 Posts: 2 Comments: 1966
1402. TexasHurricane 3:45 AM GMT en Septiembre 08, 2009    
Quoting F4PHANTOM:


From Houston/Glaveston NWS
THINGS GET REAL MESSY BY THE END OF THE WEEK. THE GFS DEVELOPS A
WEAK SURFACE LOW OVER THE WESTERN GULF WITH A SLUG OF PW AIR
APPROACHING 2.6 INCHES. THE GFS ACTUALLY DEVELOPS A WEAK SURFACE
LOW AND TRACKS IT N-NE TOWARD SOUTHERN LOUISIANA. THE CAN AND
ECMWF KEEP AN OPEN WAVE OVER THE GULF BUT BOTH MODELS STILL BRING
A SURGE OF MOISTURE NORTHWARD TOWARD THE UPPER COAST. UPPER LEVEL
WIND SHEAR LOOKS RATHER STRONG SO PREFER THE OPEN WAVE SOLUTION AS
SUGGESTED BY THE CAN/ECMWF. LONG RANGE MODELS HAVE BEGUN TO DIVERGE
AGAIN WRT TO THE UPPER LOW PROGGED TO DEVELOP OVER THE WESTERN
GREAT LAKES. THE ECMWF BRINGS THE LOW SOUTHWARD TOWARD THE CENTRAL
PLAINS WHILE THE GFS SHIFTS THE LOW EASTWARD. PREFER THE GFS SOLN
IN THE LONG RANGE BECAUSE IT MATCHES UP BEST WITH THE CAN AND LONG
RANGE ENSEMBLES. THE GFS ALLOWS AN UPPER LEVEL RIDGE TO DEVELOP
OVER THE ROCKIES AND A DEEP NORTHERLY FLOW TO DEVELOP OVER TEXAS.
EITHER WAY...DEEP MOISTURE LINGERS OVER THE AREA EARLY NEXT
WEEK...SO SCATTERED SHRA/TSRA WILL PERSIST THROUGH TUESDAY.

Of course all things are subject to changes but for now seems to be OK


yeah, well - I will definitely be keeping an eye on it just in case... :)
Member Since: Julio 2, 2009 Posts: 0 Comments: 2811
1403. truecajun 3:45 AM GMT en Septiembre 08, 2009    
good night everyone.
Member Since: Agosto 24, 2006 Posts: 0 Comments: 1848
1404. Stoopid1 3:46 AM GMT en Septiembre 08, 2009    
Quoting truecajun:
seems like everyone is wathing the football game. the blog is so much slower than usual.


Yep, watching and hoping for a FSU loss. FSU at the Miami 3 with :36 left...
Member Since: Agosto 6, 2007 Posts: 21 Comments: 2350
1405. KEEPEROFTHEGATE (Mod) 3:46 AM GMT en Septiembre 08, 2009    


Member Since: Julio 15, 2006 Posts: 143 Comments: 40557
1406. HURRICANECAT5 3:47 AM GMT en Septiembre 08, 2009    
Nam 00z continues to develop a low pressure area near South Florida. There is a pocket of lower shear there at the moment. Any opinions?
Member Since: Junio 16, 2008 Posts: 0 Comments: 134
1407. KoritheMan 3:48 AM GMT en Septiembre 08, 2009    
Quoting truecajun:


i'm terrified of tornadoes. i always have dreams about them chasing me in the sugarcane fields of New Iberia.


Oddly enough, I am going to start chasing storms in a couple years. ;)
Member Since: Marzo 7, 2007 Posts: 408 Comments: 15438
1408. tornadodude 3:48 AM GMT en Septiembre 08, 2009    
REF-
Really Egregious Football
Member Since: Junio 28, 2006 Posts: 22 Comments: 7816
1409. GeoffreyWPB 3:48 AM GMT en Septiembre 08, 2009    
Nothing going to form off the S.E. Fla. coast anytime soon.
Member Since: Septiembre 10, 2007 Posts: 0 Comments: 9127
1411. Hurricanejer95 3:51 AM GMT en Septiembre 08, 2009    
We have Fred, it will be like 2004's Danelle by track, its the 6th named storm.. UKMET was forcasting for 6 named storms
Member Since: Agosto 30, 2008 Posts: 1 Comments: 224
1412. TexNowNM 3:51 AM GMT en Septiembre 08, 2009    
Hey, I just heard from the folks down in Texas that their local met commented on an area that needs to be watched in the Gulf. I listened to his ten o'clock weather-cast on internet and he said that an area near S Texas needs to be watched. This is what I gathererd:

The upper level winds are unfavorable right now
but that will change in a few days. Anything
that spins up will go north, which means Tx/La
border. The storms sitting there will just sit and stew until then. (I hope I got that right.)

It is Greg Bostick on KFDM and he tends to be very conservative. I wonder if this is to whom TexasHurricane was referring.
Member Since: Octubre 14, 2008 Posts: 0 Comments: 179
1413. TexasHurricane 3:53 AM GMT en Septiembre 08, 2009    
Member Since: Julio 2, 2009 Posts: 0 Comments: 2811
1414. tornadodude 3:54 AM GMT en Septiembre 08, 2009    
Congrats Miami!

REF= Really Egregious Football
Member Since: Junio 28, 2006 Posts: 22 Comments: 7816
1415. Dakster 3:54 AM GMT en Septiembre 08, 2009    
CAT5 Hurricane just made landfall in Tallahassee...

What a game. Good night all, and hopefully Fred goes out to sea...
Member Since: Marzo 10, 2006 Posts: 0 Comments: 4937
1416. serialteg 3:55 AM GMT en Septiembre 08, 2009    
GFS steering forecast

Wow guys. What a game. First time I watch college football really intently - dodging the blowouts - and wow!

I'm hooked!

lol ... only if the college season were not mated with the pro season ...
Member Since: Agosto 22, 2006 Posts: 2 Comments: 1966
1417. BurnedAfterPosting 3:56 AM GMT en Septiembre 08, 2009    
Refs blew the game

Horrible call on the non pass interference with 3 minutes left changed the whole game

I hate when officials decide a great game like this
1418. tornadodude 3:55 AM GMT en Septiembre 08, 2009    
Quoting Dakster:
CAT5 Hurricane just made landfall in Tallahassee...

What a game. Good night all, and hopefully Fred goes out to sea...


goodnight!
Member Since: Junio 28, 2006 Posts: 22 Comments: 7816
1419. Dakster 3:56 AM GMT en Septiembre 08, 2009    
Usually REFS make bad calls that hurt Miami... Not the other way around...
Member Since: Marzo 10, 2006 Posts: 0 Comments: 4937
1420. TexNowNM 3:57 AM GMT en Septiembre 08, 2009    
Thanks F4PHANTOM for your quote from the Houston/Galveston weather station. The Lake Charles weather service suggests the possibility of a big rain event.

Member Since: Octubre 14, 2008 Posts: 0 Comments: 179
1421. BurnedAfterPosting 3:57 AM GMT en Septiembre 08, 2009    
game tied with 3 minutes to go and a clear pass interference is missed, FSU could have scored a TD or ran more time off the clock

doesnt matter what happens after that, the whole game was changed on the blown call
1422. BurnedAfterPosting 3:58 AM GMT en Septiembre 08, 2009    
Quoting Dakster:
Usually REFS make bad calls that hurt Miami... Not the other way around...


Well this one was the other way around, horrible call, FSU would have had a 1st down inside Miami's 20 with 3 minutes left; instead they settled for a FG which changed everything
1423. tornadodude 3:59 AM GMT en Septiembre 08, 2009    
Quoting BurnedAfterPosting:


Well this one was the other way around, horrible call, FSU would have had a 1st down inside Miami's 20 with 3 minutes left; instead they settled for a FG which changed everything


calm down, calm down, you win some, you lose some. REF= really egregious football
Member Since: Junio 28, 2006 Posts: 22 Comments: 7816
1424. homelesswanderer 3:59 AM GMT en Septiembre 08, 2009    
Quoting TexNowNM:
Hey, I just heard from the folks down in Texas that their local met commented on an area that needs to be watched in the Gulf. I listened to his ten o'clock weather-cast on internet and he said that an area near S Texas needs to be watched. This is what I gathererd:

The upper level winds are unfavorable right now
but that will change in a few days. Anything
that spins up will go north, which means Tx/La
border. The storms sitting there will just sit and stew until then. (I hope I got that right.)

It is Greg Bostick on KFDM and he tends to be very conservative. I wonder if this is to whom TexasHurricane was referring.


Hi. Yes, there's supposed to be something down there that we need to watch. Hopefully it won't be anything serious. I think the GFS is the only model that develops it. Hoping it'll just be rain.
Member Since: Agosto 15, 2008 Posts: 10 Comments: 3665
1425. serialteg 3:59 AM GMT en Septiembre 08, 2009    
Wondering how long the anticyclone will hold up... or keep up ... with fred. strong shear to the NW

Member Since: Agosto 22, 2006 Posts: 2 Comments: 1966
1426. serialteg 4:00 AM GMT en Septiembre 08, 2009    
Is pass interference a challengeable call in football, anyway? Just thinking...

IMO if it isn't (which I think it isn't) it should be, it's a definite game changer, right there with turnovers
Member Since: Agosto 22, 2006 Posts: 2 Comments: 1966
1427. TexasHurricane 4:01 AM GMT en Septiembre 08, 2009    
Quoting TexNowNM:
Hey, I just heard from the folks down in Texas that their local met commented on an area that needs to be watched in the Gulf. I listened to his ten o'clock weather-cast on internet and he said that an area near S Texas needs to be watched. This is what I gathererd:

The upper level winds are unfavorable right now
but that will change in a few days. Anything
that spins up will go north, which means Tx/La
border. The storms sitting there will just sit and stew until then. (I hope I got that right.)

It is Greg Bostick on KFDM and he tends to be very conservative. I wonder if this is to whom TexasHurricane was referring.


Hi, yes I had heard this as well....
Member Since: Julio 2, 2009 Posts: 0 Comments: 2811
1428. BurnedAfterPosting 4:01 AM GMT en Septiembre 08, 2009    
Quoting serialteg:
Is pass interference a challengeable call in football, anyway? Just thinking...


No its not, but it was clear; defender never looked for the ball and had his hands on the receiver. Since it was a 3rd down FSU had to kick a FG to only go up 3; if it had been called like it should FSU would have had a 1st down inside Miami's 20 with 3 minutes left. That changes things big time.
1429. KEEPEROFTHEGATE (Mod) 4:03 AM GMT en Septiembre 08, 2009    
Quoting homelesswanderer:


Hi. Yes, there's supposed to be something down there that we need to watch. Hopefully it won't be anything serious. I think the GFS is the only model that develops it. Hoping it'll just be rain.
by the end of the week thur fri looks to be just s of la/al offshore in north central gom by sun the 13 of sept maybe more towards eastern la then west al but as always we wait and see
Member Since: Julio 15, 2006 Posts: 143 Comments: 40557
1430. TexNowNM 4:04 AM GMT en Septiembre 08, 2009    
I am hopeful it will just be rain for SE Tx/La. We'll just have to wait and see. Goodnight Homeless and everyone else.
Member Since: Octubre 14, 2008 Posts: 0 Comments: 179
1431. tornadodude 4:04 AM GMT en Septiembre 08, 2009    
Quoting TexNowNM:
I am hopeful it will just be rain for SE Tx/La. We'll just have to wait and see. Goodnight Homeless and everyone else.


goodnight
Member Since: Junio 28, 2006 Posts: 22 Comments: 7816
1432. homelesswanderer 4:05 AM GMT en Septiembre 08, 2009    
Quoting serialteg:
Is pass interference a challengeable call in football, anyway? Just thinking...

IMO if it isn't (which I think it isn't) it should be, it's a definite game changer, right there with turnovers


I think it should be challengable as well. The officials make me nuts! Of course they make up new penalties all the time just for my team. The Roy Williams Rule. Emmit Smith Rule, Eric williams Rule, etc. etc etc. Lol
Member Since: Agosto 15, 2008 Posts: 10 Comments: 3665
1434. serialteg 4:05 AM GMT en Septiembre 08, 2009    
Quoting BurnedAfterPosting:


No its not, but it was clear; defender never looked for the ball and had his hands on the receiver. Since it was a 3rd down FSU had to kick a FG to only go up 3; if it had been called like it should FSU would have had a 1st down inside Miami's 20 with 3 minutes left. That changes things big time.


Seen a lot of those in a lot of games...

thats why i say it should be challengeable or at least reviewable for officials
Member Since: Agosto 22, 2006 Posts: 2 Comments: 1966
1435. serialteg 4:07 AM GMT en Septiembre 08, 2009    
Quoting homelesswanderer:


I think it should be challengable as well. The officials make me nuts! Of course they make up new penalties all the time just for my team. The Roy Williams Rule. Emmit Smith Rule, Eric williams Rule, etc. etc etc. Lol


so how bout them cowboys ... :P
Member Since: Agosto 22, 2006 Posts: 2 Comments: 1966
1436. homelesswanderer 4:11 AM GMT en Septiembre 08, 2009    
Quoting serialteg:


so how bout them cowboys ... :P


Lol. We'll see Sunday. :)
Member Since: Agosto 15, 2008 Posts: 10 Comments: 3665
1437. gaweatherboi 4:12 AM GMT en Septiembre 08, 2009    
What are the ensemble models for? Just wondering because of all the lines going west and northwest but the white line curves earlier.
Member Since: Agosto 12, 2009 Posts: 0 Comments: 108
1438. tornadodude 4:13 AM GMT en Septiembre 08, 2009    
Quoting homelesswanderer:


Lol. We'll see Sunday. :)


Amen! haha
Member Since: Junio 28, 2006 Posts: 22 Comments: 7816
1439. homelesswanderer 4:14 AM GMT en Septiembre 08, 2009    
Quoting TexNowNM:
I am hopeful it will just be rain for SE Tx/La. We'll just have to wait and see. Goodnight Homeless and everyone else.


Goodnight. Sorry. Between football and computer problems having trouble keeping caught up. Wonder if I'm too old to have ADD? Lol. Take Care. :)
Member Since: Agosto 15, 2008 Posts: 10 Comments: 3665
1440. GeoffreyWPB 4:16 AM GMT en Septiembre 08, 2009    
109 days til X-Mas!
Member Since: Septiembre 10, 2007 Posts: 0 Comments: 9127
1441. jurakantaino 4:21 AM GMT en Septiembre 08, 2009    
Is this a weather blog or a US Football discussion blog?
Member Since: Julio 31, 2008 Posts: 0 Comments: 730
1442. tornadodude 4:24 AM GMT en Septiembre 08, 2009    
Quoting jurakantaino:
Is this a weather blog or a US Football discussion blog?


ha definitely a weather blog, but we get distracted, sorry :P
Member Since: Junio 28, 2006 Posts: 22 Comments: 7816
1444. tornadodude 4:23 AM GMT en Septiembre 08, 2009    
Quoting iceman55:
im back


hello
Member Since: Junio 28, 2006 Posts: 22 Comments: 7816
1445. Progster 4:24 AM GMT en Septiembre 08, 2009    
Quoting gaweatherboi:
What are the ensemble models for? Just wondering because of all the lines going west and northwest but the white line curves earlier.


ensembles are a number of runs of the same model with slight difference in each run. The slight difference can be made to the physics or "guts", if you will, of each model run, or to the data that tells them what the atmosphere is like at the beginning of their simulation (the initial conditions). They show how the models respond to slightly different initial conditions. If given only a touch of different initial conditions, the ensemble "members" produce wildly different solutions then that lowers confidence in the model forecast. If in spite of their slight differences the models come up with more-or-less the same solution, that increases confidence in the forecast. Ensembles produce a sense of the predictability of the atmosphere at any given time.
Member Since: Septiembre 4, 2007 Posts: 0 Comments: 412
1447. tornadodude 4:28 AM GMT en Septiembre 08, 2009    
Quoting iceman55:
thank


how are you?
Member Since: Junio 28, 2006 Posts: 22 Comments: 7816
1448. homelesswanderer 4:28 AM GMT en Septiembre 08, 2009    
Quoting KEEPEROFTHEGATE:
by the end of the week thur fri looks to be just s of la/al offshore in north central gom by sun the 13 of sept maybe more towards eastern la then west al but as always we wait and see


Well looking at the GFS we have three of em coming. One towards the E GOM, one in SW LA and still the one we've been talking about straddling TX/LA on Monday. Lol. Take your pick I guess. Yep as always wait and see. :)
Member Since: Agosto 15, 2008 Posts: 10 Comments: 3665
1449. centex 4:29 AM GMT en Septiembre 08, 2009    
So we have a low confidence.
Member Since: Agosto 10, 2007 Posts: 0 Comments: 2856
1451. homelesswanderer 4:30 AM GMT en Septiembre 08, 2009    
Quoting centex:
So we have a low confidence.


That's what it's looking like.
Member Since: Agosto 15, 2008 Posts: 10 Comments: 3665

Viewing: 1401 - 1451

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35Blog Index

New Comment
Community Standards Policy Comments will take a few seconds to appear.
Post Your Comments
Please sign in to post comments.
Not only will you be able to leave comments on this blog, but you'll also have the ability to upload and share your photos in our Wunder Photos section.
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.

Local Weather
Light Thunderstorms and Rain
66 ° F
Tormenta débil
Community Activity