Dr. Jeff Masters' WunderBlog

96L disturbance hanging in there; F4 tornado confirmed in Missouri
Posted by: Dr. Jeff Masters, 13:52 GMT le 26 septembre 2006 +6
Well, it sure was great to watch a football game in the New Orleans Superdome last night, and not worry about a hurricane threatening the coast! The hurricane season of 2006 has been exceptionally kind to us by the standards of the past ten years, are there is nothing out there today that causes me any concern. The tropical wave (96L) we've been watching, about 900 miles east-northeast of the northern Lesser Antilles Islands, does has the potential to develop into a tropical depression, but is not expected to threaten any land areas. Wind shear has dropped from 30 knots yesterday to 20 knots today, and the system has been able to maintain more heavy thunderstorm activity near its center this morning. The storm is in a moist environment, and the ocean beneath is warm. The Canadian model is still the only model that develops the system into a tropical storm, but it appears that wind shear will drop another 5 knots over the next two days, potentially allowing 96L to organize into a tropical depression. Bermuda will need to keep an eye on this system, but I expect it will recurve out to sea before reaching the island.

Elsewhere in the tropical Atlantic, it's time to start watching the cloud-covered areas of the ocean surrounding the U.S. where cold fronts stall out. One such area to watch is off the North Carolina Outer Banks on Wednesday, when a tropical low could develop and scoot quickly northeastward out to sea. The more dangerous possibility is in the Gulf of Mexico or Western Caribbean near the Yucatan Peninsula early next week. A strong cold front is expected to push off the East Coast of the U.S. this weekend and stall over the Gulf of Mexico or Western Caribbean. The past few runs of the NOGAPS model have been predicting that if this front stalls out over the Western Caribbean, it could serve as a genesis area for a tropical storm. None of the other models are picking up on this, but this is a typical type of development we see in this region in October.


Figure 1. Preliminary models tracks for Invest 96L.

F4 tornado confirmed in Missouri
The National Weather Service confirmed yesterday that the second violent F4 tornado of the year occurred Friday. The 350 yard-wide tornado ripped through Crosstown, MO, injuring five. F4 tornadoes have winds speeds of 207-260 mph (there have been no F5 tornadoes with winds in excess of 260 mph reported in the U.S. since 1999). The weekend severe weather outbreak was the second largest of the year, with 59 tornadoes (including 40 on September 22). The other F4 tornado of 2006 also affected Missouri, when Monroe City got hit on March 12 as part of the biggest severe weather outbreak of the year--84 tornadoes over a 3-day span.

I'll have an update Wednesday morning.
Jeff Masters
Huge thunder head (wunderandrew)
SEVERE STORMS OVER ILLINOIS it did not storm were i live but there is another chance of severe weather tomorow
Huge thunder head
Categories: Tornado
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601. StoryOfTheCane 22:18 GMT le 26 septembre 2006    
Posted By: kylejourdan2006 at 6:13 PM EDT on September 26, 2006.
LOL I know Story! I'm just saying it needs to be watched, not that anything will develop. Remember - it's always better to be safe than sorry!

Well said, if you're going to get defensive or rude because you disagree with someone else's observation then you shouldn't be on this blog in the first place, especially if you make false observations like the pressure in the W. Caribbean isnt dropping..lol We're here to observe and discuss possibilities, nothing else, lets keep it civilized.
602. rwdobson 22:18 GMT le 26 septembre 2006    
ok, jake let's take a longer-term view. over the last 23 hours, the pressure has INCREASED. is that long-term enough for you?
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603. WPBHurricane05 22:19 GMT le 26 septembre 2006    
the center of circulation is over land
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604. jake436 22:19 GMT le 26 septembre 2006    
09 26 1950 E 17.5 21.4 5.2 6 4.4 ENE 29.92 -0.08 81.3 84.0 - - - -
09 26 1850 E 21.4 23.3 5.6 5 4.4 E 29.92 -0.08 81.0 83.8 - - - -
09 26 1750 ESE 21.4 23.3 5.2 6 4.3 E 29.95 -0.04 79.0 84.2 - - - -
09 26 1650 SE 21.4 25.3 3.9 5 4.2 ENE 30.00 +0.01



This is the last four hours, by the way.
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605. rwdobson 22:20 GMT le 26 septembre 2006    
jake, hit your refresh button. there is a 2050 observation up now. that is what i used.
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606. sarepa 22:20 GMT le 26 septembre 2006    
wich track is the disturbance in western caribean taking look to me east
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607. cgableshurrycanegal 22:21 GMT le 26 septembre 2006    
CHILL PILL TIME!!! Good Grief you folks...
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608. StoryOfTheCane 22:21 GMT le 26 septembre 2006    
who cares about 23 hours rwdobson?? in the past 6 hours it has dropped from 30.00 to 29.91, that is a descent drop
609. rwdobson 22:22 GMT le 26 septembre 2006    
"who cares about 23 hours rwdobson?? "

jake told me to not to use short-term observations.
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611. StoryOfTheCane 22:22 GMT le 26 septembre 2006    
Posted By: WPBHurricane05 at 6:19 PM EDT on September 26, 2006.
the center of circulation is over land

doesnt mean it will always be this way, WPB
612. StoryOfTheCane 22:23 GMT le 26 septembre 2006    
short term would be like 2-3 hours, 6-12 hours is the time frame that is most significant to watch since this storm is still in a possible developmental phase, 24 hours is too much unless its already a developed system
613. WPBHurricane05 22:24 GMT le 26 septembre 2006    
jake told me to not to use short-term observations.

LOL true!!
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615. eye 22:26 GMT le 26 septembre 2006    
what are yall gonna do in the Year of the El Nino 2007? Man, but 2008 yall will be watching every lil tiny itty bitty convection even over land....wait.....that is already happening....yall can hibernate next season, it is going to be way slower then this year with a strengthening El Nino.
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616. rwdobson 22:26 GMT le 26 septembre 2006    
well, no matter how you slice it, 29.91 is not a low pressure at all. right at normal. the pressure goes up and down all the time and it doesn't mean a tropical cyclone is developing.

and by the way, 12 hours ago, the pressure was 29.89...so over the last 12 hours, pressure has risen.
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617. Thundercloud01221991 22:26 GMT le 26 septembre 2006    
2050 29.91 -.04
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618. jake436 22:27 GMT le 26 septembre 2006    
If you would have read my post about ten minutes ago, I said it was low and rising yesterday, peaked out, and has been falling all day. Nobody has said anything different. Story stated nothing that wasn't fact, and you pounced on him with weak evidence. Then you embellished what he said by claiming he said "rapidly" rising pressure. He didn't state anything but the facts that he observed.

And like I said earlier, there was no blob when the pressures were lower yesterday. It takes more than just low pressure to make a potential invest. It also takes more than just convection to make a potential invest. But when it appears that both of those ingredients exost at the same time, there's nothing wrong with calling attention to it.
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620. jake436 22:29 GMT le 26 septembre 2006    
Posted By: MichaelSTL at 10:25 PM GMT on September 26, 2006.

09 26 1950 E 17.5 21.4 5.2 6 4.4 ENE 29.92 -0.08 81.3 84.0 - - - -
09 26 1850 E 21.4 23.3 5.6 5 4.4 E 29.92 -0.08 81.0 83.8 - - - -
09 26 1750 ESE 21.4 23.3 5.2 6 4.3 E 29.95 -0.04 79.0 84.2 - - - -
09 26 1650 SE 21.4 25.3 3.9 5 4.2 ENE 30.00 +0.01


This is the last four hours, by the way.

Actually, that is three hours: 1950 - 1650 = 300 (3 hours).



Micheal, don't embarass yourself. That is the latest 4 hourly reports, and actually, I didn't include 2050, which also dropped slightly.
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621. eye 22:29 GMT le 26 septembre 2006    
The Carribean blob will be gone by am hrs on Wednesday. Just like the other blob, will vanish. The tops are already warming and the whole structure of the blob does not impress me.
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622. WPBHurricane05 22:30 GMT le 26 septembre 2006    
eye is the thing in the carribean gonna develop??

nope, thats what i thought
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623. plywoodstatenative 22:31 GMT le 26 septembre 2006    
you know, if you compare where the blob is and where the eddy's are/gulfstream location is you will notice that it is perched right on top of either the gulfstream or an eddy. Either way if it stays on that path and moves slow enough, something may form out of it. But all the convection with nothing to wrap around will do nothing but produce wind, rain, and waves.
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625. WPBHurricane05 22:31 GMT le 26 septembre 2006    
no westcasting here
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626. rwdobson 22:31 GMT le 26 septembre 2006    
ok, story said winds were increasing "rapidly" and he didn't say pressures were falling rapidly. my mistake. you got me there. but the winds are not increasing rapidly, or at all, so he did say something that was not fact.
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628. kylejourdan2006 22:33 GMT le 26 septembre 2006    
eye is exactly why I talk in private blogs with people who KNOW what they're talking about. It's so funny what kind of crap we talk on eye in them! LOL! Some of you may know what I mean if you've joined us!

Watch out - a lot of the people I talk to personally (jp, nash, etc.) in the private blogs agree with me that eye is one the biggest wishcasters!
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629. StoryOfTheCane 22:33 GMT le 26 septembre 2006    
eye, what division of NHC do you work for? thats what i thought.
630. eye 22:33 GMT le 26 septembre 2006    
the last El Nino was NOT followed by a strong La Nina, in fact, there hasnt been a strong La Nina in a long time.
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631. kylejourdan2006 22:34 GMT le 26 septembre 2006    
And eye - El Nino won't last longer than spring. It's going to be a "weak to moderate" El Nino, and they typically last a few months.
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632. StoryOfTheCane 22:35 GMT le 26 septembre 2006    
Posted By: rwdobson at 6:31 PM EDT on September 26, 2006.
ok, story said winds were increasing "rapidly" and he didn't say pressures were falling rapidly. my mistake. you got me there. but the winds are not increasing rapidly, or at all, so he did say something that was not fact.

I said the winds were increasing SIGNIFICANTLY. they have increased 10 kts from yesterday, in my book, that is significant
634. plywoodstatenative 22:35 GMT le 26 septembre 2006    
eye, its just a wave on top of an eddy. there is basically no structure whatsoever to it. If anything its just a rainmaker for the central america area. Beyond that i see nothing. As for the blowup off of florida, it appears to be an old cold front coming back as a warm front and running into a cold/warm air mass divergence. As of 96L, I do not see anyway that it could move towards the US. There is an upper level low to the west of it providing the shear and providing the stearing motion. If it were to move towards the US it would encounter colder waters and would most likely dissapate.
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635. eye 22:35 GMT le 26 septembre 2006    
kyle, actually my friend, i have called every storm a fish(besides of course Ernesto, the ones that have formed around the Cape Verdes this year, FISH as in no threat to the USA), while you try to wishcast them to the USA...I call them way way in advance while you say "it is tooooooooooooooooooo early" when it is pretty obvious what it will do.

Lets see if your storm dissipates by the am hrs.....is the name of the blog "WishcastersRus"?
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636. WPBHurricane05 22:36 GMT le 26 septembre 2006    
1650-1950 is 3 hours

1650-1750 1 hours
1750-1850 2 hours
1850-1950 hmm...3 hours
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637. IADCW 22:36 GMT le 26 septembre 2006    
EYE - I am really impressed!...Not only do you know whats gonna happen in the next 2 years... you know what everyones thinking too. Just amazing. Tell us more.
638. plywoodstatenative 22:38 GMT le 26 septembre 2006    
Michael, what about the small amount of convection to the east of the Lesser Antilles and to the southwest of 96L? Does that appear to be trying to develop or is just another wave?
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639. WPBHurricane05 22:38 GMT le 26 septembre 2006    
i do have to agree with eye on the fish storm
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640. eye 22:39 GMT le 26 septembre 2006    
IAD, i guess you didnt read Dr Ms blog awhile back, saying that El Nino tends to last longer and will most likely affect next season too, this was before it has grown even stronger. Also, a strong La Nina did not follow the last strong El Nino, in fact, the La Ninas that have formed have been weak.
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641. plywoodstatenative 22:40 GMT le 26 septembre 2006    
Eye- Otherwise known as the Magical 8 Ball
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642. kylejourdan2006 22:40 GMT le 26 septembre 2006    
Look at this graphic. In October tropical systems can develop in that general area where that wave is. Although it's not October yet, the conditions don't just change automatically for each month, so that wave MIGHT have a chance. First we'll need to see a definitive swirl (low) and some more significant pressure drops. Yet, any pressure drop in the Caribbean with a wave like that needs to be monitored (keeping Wilma in mind)...

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643. kylejourdan2006 22:42 GMT le 26 septembre 2006    
eye - Then you were wrong of the fish storms. Only Gordon and Helene were fish storms, all others affected land. That's a sign of an inconsiderate jerk who thinks the U.S. is the only important land mass of the world.
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644. eye 22:43 GMT le 26 septembre 2006    
prediction: the blow up will blow down just as fast, just like the blob did 2 days ago N of Panama....everybody jumped all over it too.
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646. WPBHurricane05 22:45 GMT le 26 septembre 2006    
Only Gordon and Helene were fish storms

Actually Gordon and Helene affected Europe

Debby was the only fish storm
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647. kylejourdan2006 22:45 GMT le 26 septembre 2006    
648. StoryOfTheCane 22:45 GMT le 26 septembre 2006    
well theres nothing wrong with jumping on a blob in a weather blog, i mean, blobs are one of the number one signs of potential development other than circulation, are they not?
649. IADCW 22:46 GMT le 26 septembre 2006    
Thank you EYE - Is there more we need to know - do you see more that we need to be aware of. If you could give me the next year of possible bad weather - I wouldnt have to worry about the weather at all. What about rain, what areas of the country do you see getting rain over the next year or so. Might if you could help me out with forecast - Wait - Eye, all seeing - I get it now.

Oh - never mind - I think I'll listen to all sides watch for myself.
650. eye 22:46 GMT le 26 septembre 2006    
Kyle, like i said, I call Fish storms storms that dont affect the USA. I have said that many times, you can be "politically correct" all you want.
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651. kylejourdan2006 22:46 GMT le 26 septembre 2006    
WPB - I use "fish storm" when referring to tropical systems, as I know Gordon and Helene affected Europe (my mom's entire family lives in Europe, and we visit often), but Debby affected the Cape Verdes as a tropical system, so she was not a fish storm.
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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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