Dr. Jeff Masters' WunderBlog

Tropical Depression Seven forms
Posted by: Dr. Jeff Masters, 14:25 GMT le 14 août 2011 +14
The latest in our unusual number of weak tropical cyclones this season, Tropical Depression Seven, has formed to the southeast of Bermuda. Unless you live in Bermuda, TD 7 is not going to be a concern. Radar out of Bermuda shows an area of rain on the northern side of TD 7 beginning to approach the island, and rain from the storm will likely affect the island tonight and on Monday. TD 7 is not well-organized, and has only limited heavy thunderstorms, as seen on visible satellite images. While wind shear is a low 5 - 10 knots, dry air surrounds TD 7, and is keeping the storm from intensifying. None of the computer models foresee that TD 7 will ever become more than a weak tropical storm.


Figure 1. Morning satellite image of TD 7.

92L
TD 7 isn't the only system Bermuda needs to watch, Invest 92L is a day behind it, and will follow a path very similar to TD 7's. The disturbance will pass close to Bermuda on Tuesday, bringing the island a second round of tropical rains. However, Invest 92L is very disorganized, as seen on recent visible satellite loops. Dry air and close proximity to TD 7 will likely keep 92L from showing significant development over the next two days, with NHC giving the system just a 30% chance of developing into a tropical depression by Tuesday morning.

Elsewhere in the tropics
The disturbance midway between the Lesser Antilles Islands and the coast of Africa we've been tracking over the past few days, Invest 93L, has fallen apart and is no longer a threat to develop. This system will need to be watched once it enters the Caribbean later this week, though. None of the reliable models for predicting tropical cyclone formation predict development of this system or any new disturbances over the coming week.

Jeff Masters
Categories: Hurricane
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1951. Neapolitan 14:22 GMT le 15 août 2011    
96L re-activated. Again. Far to the north, and moving away:

BEGIN
NHC_ATCF
invest_al962011.invest
FSTDA
R
U
040
010
0000
201108151415
NONE
NOTIFY=ATRP
END
INVEST, AL, L, , , , , 96, 2011, DB, O, 2011081418, 9999999999, , , , , , METWATCH, , AL962011
AL, 96, 2011081418, , BEST, 0, 367N, 638W, 25, 1009, DB, 0, , 0, 0, 0, 0,
AL, 96, 2011081500, , BEST, 0, 382N, 636W, 25, 1009, DB, 0, , 0, 0, 0, 0,
AL, 96, 2011081506, , BEST, 0, 397N, 631W, 25, 1010, DB, 0, , 0, 0, 0, 0,
AL, 96, 2011081512, , BEST, 0, 410N, 619W, 25, 1010, LO, 0, , 0, 0, 0, 0,
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1954. mcluvincane 14:25 GMT le 15 août 2011    


This one shows real promise...
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1957. AllStar17 14:27 GMT le 15 août 2011    
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1958. weathermanwannabe 14:27 GMT le 15 août 2011    
The good news of the day so far is that Gert is a small storm and is staying to the right of Bermuda so they should not feel any major impacts as it passes them.
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1959. BahaHurican 14:28 GMT le 15 août 2011    
93L looks nice this morning.... right on schedule, too. But there we go.... the twin-lobed structure that's plagued everything coming to the CAR from this direction. I'm starting to think it's a speed feature... these waves seem to be flying along at well over 15 mph, which as kman said earlier is surely not conducive to formation. I actually think if 93L were moving through this area on approach to the Leewards at a slower pace, we'd see TC formation out of it. As it is, it looks like a day of heavy downpours from Barbados to Barbuda....
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1960. Neapolitan 14:29 GMT le 15 août 2011    
FWIW, 96L is 270 miles SSE of Halifax, Nova Scotia, and about 425 miles due east of Cape Cod.
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1961. ILwthrfan 14:30 GMT le 15 août 2011    
Just throwing this out there but if we do go through the entire season without a hurricane in the Gulf of Mexico or the Northwest Carribean... Oh man is winter going to be fun!
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1962. CybrTeddy 14:31 GMT le 15 août 2011    
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1963. catastropheadjuster 14:31 GMT le 15 août 2011    
Quoting stillwaiting:
writings on the wall for those who cant see it,almost exact same pattern as last yr.....2011 is 2010 tc season pt 2


Stillwaiting- Good Morning,Been doing good? so u think it's looking more like 2010 this yr? I kinda do to, the waves come off kind of strong with some good convection and a swirl with them and then becomes a dud. Like u said it looks like part2 too 2010.
Which that is wonderful to have another safe yr.

sheri
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1964. islandgirl725 14:31 GMT le 15 août 2011    
new blog
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1965. AtHomeInTX 14:31 GMT le 15 août 2011    
Mother Nature kicked up her heels a bit yesterday. Sadly was more of this than rain. :(

Severe thunderstorm causes minor damage near Orange...


Strong winds blew through parts of Orange County earlier Sunday evening knocking out the power at the Temple Inland Paper Mill on Highway 87. This area was under a severe thunderstorm warning for about 40 minutes Sunday afternoon.
A man got trapped inside and elevator for several minutes before he was rescued by emergency workers.



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1966. Neapolitan 14:31 GMT le 15 août 2011    
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1968. islander101010 14:37 GMT le 15 août 2011    
start to see these waves develop right off the coast of africa now its aug 15
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1969. MahFL 14:40 GMT le 15 août 2011    
Only 5kts of shear all the way to the GOM...




As always take with a pinch of salt.
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1972. CaneHunter031472 15:10 GMT le 15 août 2011    
Quoting ILwthrfan:
Just throwing this out there but if we do go through the entire season without a hurricane in the Gulf of Mexico or the Northwest Carribean... Oh man is winter going to be fun!


I'm already starting to look at this years winter outlook. If you like cold weather you will love it.
Member Since: 1 août 2007 Posts: 0 Comments: 895
1973. CaneHunter031472 15:11 GMT le 15 août 2011    
Quoting cloudburst2011:



yes i agree totally the east coast is off the hook for 2011...if 93L does form it will move into the caribbean and then up to the yucatan before finally dying in mexico...


Can't wait to hear the HAARP cpnspiracy casters to start their theories.
Member Since: 1 août 2007 Posts: 0 Comments: 895
1974. NOLALawyer 15:35 GMT le 15 août 2011    
Quoting stillwaiting:
writings on the wall for those who cant see it,almost exact same pattern as last yr.....2011 is 2010 tc season pt 2


You might be right, but I don't want to hear it.

This season is actually worse so far than last year. At least last year there signs of hope.
Member Since: 3 septembre 2009 Posts: 0 Comments: 517
1975. MiamiHurricanes09 19:28 GMT le 15 août 2011    
.
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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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