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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2601. Patrap 02:05 GMT le 05 juillet 2010    
Member Since: 3 juillet 2005 Posts: 371 Comments: 111577
2602. TexasHurricane 02:06 GMT le 05 juillet 2010    
Be back in a couple of hours....wonder how much will change by then. :)
Member Since: 2 juillet 2009 Posts: 0 Comments: 2811
2603. hercj 02:06 GMT le 05 juillet 2010    
Quoting Patrap:


Buckle in, folks..

Boogity,Boogity,boogity.

Lets go tropical Blogging..Boyz

I love DW Pat.
Member Since: 5 septembre 2009 Posts: 0 Comments: 319
2604. pottery 02:06 GMT le 05 juillet 2010    
Quoting Dakster:


I've been through the same thing a few times now. The first few days aren't that great and sleep is something that doesn't come easily. Although time may not "heal" all wounds, it at least dulls the pain.

True.
Take time, Aussie.
Member Since: 24 octobre 2005 Posts: 0 Comments: 20708
2605. pottery 02:07 GMT le 05 juillet 2010    
Quoting P451:


Would four days of imagery help them?

;-)





Link to 2nd uploaded file
if bandwidth dies on posted image.


Very Nice. Thanks for that.
Member Since: 24 octobre 2005 Posts: 0 Comments: 20708
2606. kmanislander 02:08 GMT le 05 juillet 2010    
Quoting superpete:
Kman: Good evening, how is it outside down your side tonight?


Hi Pete,

It's been quite an interesting day. Early afternoon we had winds sustained around 35 to 38 mph with gusts to 43 mph.

Right now its better but not nice. Winds gusting between 14 and 25 mph and variable out of the SE to S. Raining

Not a good night to walk the dog ( fortunately I don't have one )
Member Since: 19 août 2006 Posts: 0 Comments: 14939
2607. Hhunter 02:08 GMT le 05 juillet 2010    
Quoting kmanislander:
Good evening

Well, the area over the Windwards has now been flagged by the NHC but 96L seems to be engaged in Plan B. Squally weather has set in here again after a break this afternoon.

Sometimes these systems just sit over the NW Caribbean until they organize. Motion in any particular direction is not a given until then.


yep, kind of like how systems organize in the pacific
Member Since: 19 août 2007 Posts: 0 Comments: 2886
2608. bohonkweatherman 02:08 GMT le 05 juillet 2010    
Usually on July 4th there is nothing to watch in the tropics. The tropics don't really start until middle of August and peak in September. If early July is as active as it is now what will August and September bring?
Member Since: 5 juillet 2009 Posts: 0 Comments: 1348
2609. HurricaneSwirl 02:09 GMT le 05 juillet 2010    
Quoting MiamiHurricanes09:
ATCF - FIX

Click on where it says "fal962010.dat" and then you'll see the numbers. Here's the thing, make sure to scroll to your right because that is where the info is.

*Obviously click on the corresponding system, but in this case I just pointed out 96L.


Thanks! And yeah I kinda figured what you wrote with the star lol.
Member Since: 7 juillet 2008 Posts: 2 Comments: 3237
2610. DauphinNotDolphin 02:09 GMT le 05 juillet 2010    
FWIW, the 18z regional Canadian model shows 96L shooting up toward Mobile Bay in 48 hours:

2611. FLWeatherFreak91 02:09 GMT le 05 juillet 2010    
Quoting pottery:

Typhoon and Hurricane is just a name, either in the Pacific (Typhoon) or Atlantic (hurricane).
They are the same thing, and form from the same conditions.
The more powerful they are, the more dangerous they are.
No matter what the name is.
Yeah, I'll agree that they are virtually the same thing, but Pacific Typhoons generally form from a large area of unorganized convection while Atlantic storms are spawned mostly by thunderstorm complexes that move off of Africa.

I think this year people are comparing the systems we've seen in the Atl so far to the way in which pacific typhoons form.
Member Since: 1 décembre 2006 Posts: 2 Comments: 3461
2612. Patrap 02:09 GMT le 05 juillet 2010    
Member Since: 3 juillet 2005 Posts: 371 Comments: 111577
2613. KEEPEROFTHEGATE (Mod) 02:10 GMT le 05 juillet 2010    
INV/XX/XL
MARK
16.1N/59.8W
Member Since: 15 juillet 2006 Posts: 143 Comments: 40597
2614. brla61 02:10 GMT le 05 juillet 2010    
Quoting pottery:

Typhoon and Hurricane is just a name, either in the Pacific (Typhoon) or Atlantic (hurricane).
They are the same thing, and form from the same conditions.
The more powerful they are, the more dangerous they are.
No matter what the name is.

Thanks, I was wondering about that, also. How are you this evening?
Member Since: 21 juin 2010 Posts: 0 Comments: 61
2616. Dakster 02:10 GMT le 05 juillet 2010    
WOW. Patrap... Nice Radar.
Member Since: 10 Mars 2006 Posts: 0 Comments: 4938
2617. MrstormX 02:10 GMT le 05 juillet 2010    
Quoting KEEPEROFTHEGATE:
INV/XX/XL
MARK
16.1N/59.8W


Thats looking interesting....
Member Since: 27 mai 2009 Posts: 0 Comments: 4232
2618. Patrap 02:10 GMT le 05 juillet 2010    
96L may be impacting in 72-80 in my estimate at the fwd speed of the envelope.

which will change up and down as it develops
Member Since: 3 juillet 2005 Posts: 371 Comments: 111577
2619. Kristina40 02:10 GMT le 05 juillet 2010    
Looks like 95L is coming in to shore. Pressure drops all along the coast.
Member Since: 27 juin 2010 Posts: 0 Comments: 681
2620. SLU 02:11 GMT le 05 juillet 2010    
Quoting bohonkweatherman:
Usually on July 4th there is nothing to watch in the tropics. The tropics don't really start until middle of August and peak in September. If early July is as active as it is now what will August and September bring?


lol .. maybe the atlantic's 1st supercane
Member Since: 13 juillet 2006 Posts: 11 Comments: 2851
2621. FLWeatherFreak91 02:11 GMT le 05 juillet 2010    
Quoting Patrap:
96L Floater - RGB Color Infrared Loop
Had some nice midlevel rotation earlier today... I think we'll see things in the lower level coalesce more tomorrow.
Member Since: 1 décembre 2006 Posts: 2 Comments: 3461
2623. Patrap 02:11 GMT le 05 juillet 2010    
Member Since: 3 juillet 2005 Posts: 371 Comments: 111577
2624. msgambler 02:12 GMT le 05 juillet 2010    
Quoting Patrap:
96L may be impacting in 72-80 in my estimate at the fwd speed of the envelope.

which will change up and down as it develops
Will it take that long to get to the MX/TX border Pat?
Member Since: 27 février 2010 Posts: 0 Comments: 1120
2625. Dakster 02:12 GMT le 05 juillet 2010    
KOTG - The windward islands "disturbance" seems to be forming the same way Alex and 96L are...
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2626. bwi 02:12 GMT le 05 juillet 2010    
1005.2 at the buoy. Not spurious, perhaps.
Member Since: 4 septembre 2007 Posts: 0 Comments: 1134
2627. MarineMeteorologist 02:12 GMT le 05 juillet 2010    
42056 at 9:50PM EDT 1005mb still falling rapidly but winds continue only 5-8Kts only.

42057 shows pressure 1013mb and rising
Member Since: 25 juillet 2008 Posts: 97 Comments: 73
2628. Mikla 02:13 GMT le 05 juillet 2010    
95L & 96L Models... 96L models shifted to the East...
Member Since: 13 octobre 2006 Posts: 0 Comments: 201
2629. Patrap 02:13 GMT le 05 juillet 2010    
Quoting msgambler:
Will it take that long to get to the MX/TX border Pat?


That solution is decreasing each run today
Member Since: 3 juillet 2005 Posts: 371 Comments: 111577
2630. AstroHurricane001 02:14 GMT le 05 juillet 2010    
According to the TWO on 96L:

"NEARBY
SHIP AND BUOY OBSERVATIONS INDICATED WINDS OF TROPICAL-STORM-FORCE
BRIEFLY OCCURRED IN ASSOCIATION WITH THIS SYSTEM DURING THE PAST
FEW HOURS."

Looks like we may have Tropical Storm Bonnie right when a closed surface circulation develops.
Member Since: 30 août 2008 Posts: 8 Comments: 2811
2631. bohonkweatherman 02:14 GMT le 05 juillet 2010    
No I don't think I do. Already here in Texas too much rain, only ones have a field day are the mosquitos. I think this year we have to take one day at a time and just do the best we can.
Member Since: 5 juillet 2009 Posts: 0 Comments: 1348
2632. Patrap 02:14 GMT le 05 juillet 2010    
Member Since: 3 juillet 2005 Posts: 371 Comments: 111577
2633. KEEPEROFTHEGATE (Mod) 02:15 GMT le 05 juillet 2010    
INV/96/L
MARK
16.1N/80.8W
Member Since: 15 juillet 2006 Posts: 143 Comments: 40597
2634. msgambler 02:15 GMT le 05 juillet 2010    
Quoting Patrap:


That solution is decreasing each run today
You couldn't tell the saracastic tone I had, I take it...LOL
Member Since: 27 février 2010 Posts: 0 Comments: 1120
2636. Patrap 02:16 GMT le 05 juillet 2010    
Quoting msgambler:
You couldn't tell the saracastic tone I had, I take it...LOL


LOl..I did.

But Im sure dem masse's didnt
Member Since: 3 juillet 2005 Posts: 371 Comments: 111577
2637. kmanislander 02:16 GMT le 05 juillet 2010    
Quoting AstroHurricane001:
According to the TWO on 96L:

"NEARBY
SHIP AND BUOY OBSERVATIONS INDICATED WINDS OF TROPICAL-STORM-FORCE
BRIEFLY OCCURRED IN ASSOCIATION WITH THIS SYSTEM DURING THE PAST
FEW HOURS."

Looks like we may have Tropical Storm Bonnie right when a closed surface circulation develops.


We had TS force winds here around 2 today gusting to as much as 49 mph over a one hour period. Without a closed surface low, no TD or TS.
Member Since: 19 août 2006 Posts: 0 Comments: 14939
2640. MiamiHurricanes09 02:17 GMT le 05 juillet 2010    
This is one crazy lil' buoy.

Member Since: 2 septembre 2009 Posts: 129 Comments: 19976
2641. pottery 02:18 GMT le 05 juillet 2010    
Quoting brla61:

Thanks, I was wondering about that, also. How are you this evening?

Excellent! And you?
Member Since: 24 octobre 2005 Posts: 0 Comments: 20708
2642. Patrap 02:18 GMT le 05 juillet 2010    
96L revving the engine in the Se Quad corner.

Member Since: 3 juillet 2005 Posts: 371 Comments: 111577
2643. kmanislander 02:18 GMT le 05 juillet 2010    
Quoting MiamiHurricanes09:
This is one crazy lil' buoy.



Help, I've fallen and I can't get up !
Member Since: 19 août 2006 Posts: 0 Comments: 14939
2644. MarineMeteorologist 02:18 GMT le 05 juillet 2010    
BTW, 1005mb is low enough to produce winds of 30-35kts based on 1013mb from 42057.
Member Since: 25 juillet 2008 Posts: 97 Comments: 73
2645. MiamiHurricanes09 02:19 GMT le 05 juillet 2010    
Quoting kmanislander:


Help, I've fallen and I can't get up !
LOL!
Member Since: 2 septembre 2009 Posts: 129 Comments: 19976
2646. KEEPEROFTHEGATE (Mod) 02:19 GMT le 05 juillet 2010    
Quoting Dakster:
KOTG - The windward islands "disturbance" seems to be forming the same way Alex and 96L are...


as all will dev the same
we really have
wpac type sst's and other factors
which more than likly will govern
most systems this season
till sst's begin the downward turn
and we wring out some water vapour from the atomsphere
Member Since: 15 juillet 2006 Posts: 143 Comments: 40597
2647. msgambler 02:19 GMT le 05 juillet 2010    
Pat, I can see I am gonna have to make a trip to my local Wal-Mart for beer, coffee, and doritos. Gonna be a long week.
Member Since: 27 février 2010 Posts: 0 Comments: 1120
2649. Levi32 02:21 GMT le 05 juillet 2010    
Quoting pottery:

Typhoon and Hurricane is just a name, either in the Pacific (Typhoon) or Atlantic (hurricane).
They are the same thing, and form from the same conditions.
The more powerful they are, the more dangerous they are.
No matter what the name is.


Typhoons and hurricanes are usually formed from different patterns, although how they develop and intensify is exactly the same. The pattern that spawns them, however, is different.
Member Since: 24 novembre 2005 Posts: 586 Comments: 25456
2650. atmoaggie 02:21 GMT le 05 juillet 2010    
Quoting bwi:
1005.2 at the buoy. Not spurious, perhaps.
No way. Not believing that ob....
Member Since: 16 août 2007 Posts: 6 Comments: 12461
2651. pottery 02:21 GMT le 05 juillet 2010    
Quoting FLWeatherFreak91:
Yeah, I'll agree that they are virtually the same thing, but Pacific Typhoons generally form from a large area of unorganized convection while Atlantic storms are spawned mostly by thunderstorm complexes that move off of Africa.

I think this year people are comparing the systems we've seen in the Atl so far to the way in which pacific typhoons form.

True. Good points.
Member Since: 24 octobre 2005 Posts: 0 Comments: 20708

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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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