Tropical Depression Six arrives
Tropical Storm Tropical Depression Six is here, but it will not be a threat to land for at least the next five days. Tropical Depression Six is a classic "Cape Verdes"-type storm common during the peak part of hurricane season. Cape Verdes-type storms are so named because they form from tropical waves that come off the coast of Africa and pass near the Cape Verdes Islands just west of Africa. Cape Verdes hurricanes are the largest and most dangerous types of hurricane in the Atlantic, since they spend a long time over water have and have of opportunity to reach full maturity. Tropical Depression Six has a ways to go before it becomes a hurricane, as the storm is embedded in a strong easterly flow of wind courtesy of the African Monsoon that is generating a moderately high 15 - 20 knots of wind shear. There is also a tropical disturbance to the northeast of TD 6 that is sucking away some moisture and is interfering with the storm's circulation. Sea Surface Temperatures (SSTs) are a warm 28°C, and the storm is embedded in a moist environment, so wind shear is the primary inhibiting factor for development. The strong east winds imparting the shear are keeping any heavy thunderstorms from developing on the east side of the center of circulation, which is exposed to view in satellite imagery (Figure 1.)

Figure 1. Afternoon satellite image of Tropical Depression Six.
Forecast for Tropical Depression Six
A ridge of high pressure will force Tropical Depression Six to the west-northwest for the next five days, and the system should increase its forward speed from its current 10 mph to 15 mph by Monday night. A powerful trough of low pressure over the mid-Atlantic Ocean will begin to pull Tropical Depression Six more to the northwest late this week, and the storm should pass well to the northeast of the Lesser Antilles Islands. It remains to be seen, however, it this trough will be strong enough to fully recurve Tropical Depression Six out to sea. The GFS predicts that Tropical Depression Six may pass close to Bermuda about eight days from now, and it is also possible that Tropical Depression Six could eventually hit the U.S. East Coast 9 - 15 days from now. However, we have no skill in making these sort of ultra-long range forecasts, and the long-range fate of TD 6 is uncertain.
Elsewhere in the tropics
The ECMWF and NOGAPS models are predicting formation of a tropical depression off the coast of Africa 3 - 4 days from now.
Jeff Masters
Reader Comments
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It is NOT impossible for this to go further west ...I agree with you and there have been alot of storm tracks that have. I do realize that it all depends all depends onthe strength of Danielle and the troughs /ridging. If the troughs/ridging dont move according to planned this could play an important role also.
Yeah same here.. but it didnt start 12:30 in the afternoon.. then off and on til like 6ish.. Had a nice storm came through around 4 when I went to BestBuy today.. I think I will get more rain tomorrow like I did the last few days or so..
Heavy line of thunderstorms coming through. Looks to passing pretty quickly.
Well, what is BR? Boca Raton? Baton Rouge? Brazil? Banana Republic?
Goodnight!
Absolutely right!
Looks like a gust front developed out ahead of the storm complex, straight line winds.
Always interested!
LOL! sorry i didn't realize that i put BR. that was silly. Baton Rouge. i really haven't heard wind like this except during canes. it's really strange that the local channels aren't saying anything. there is no rain, just constant howling winds and a little thunder in the distant north.
The winds are ripping, more from this that we got from TD5 and XTD5
SUBJECTIVE FORECAST
TS MINDULLE 1005 (1005) INITIAL TIME 230300 UTC
00HR 16.1N 110.4E 988HPA 20M/S (40 knots)
30KTS 100KM
P12HR WNW 15KM/H=
China Meteorological Administration
We need to watch these time frames. If Danielle is delayed one day by a point on this graphic she might miss her point of parking and ask for a more upscale landfall and cost a lot more.
the circulation is very strong, a relocation is unlikely at this stage
There's nothing blocking it from continuing west, AFAIK. The poleward movement predicted is, as you said, because of troughs.
That doesn't mean that Danielle CANT go west, it simply means that the more probable outcome will be poleward.
where are you? the howling finally stopped here. i'm in brusly (west baton rouge)
I'm in Houma, it's storming here.
Here's some images..
Actually looks like 2 gust fronts developed.
Aggie I love it when you post that, it really shows how much (or little) the forecast track changes, thanks!
when that anticyclone gets dead center over her the northwest will start
ah. yes. here is the rain. that wind was unnerving. i didn't like it catching me by surprise like that.
Tropical Cyclone Advisory #8
TROPICAL STORM MINDULLE (T1005)
12:00 PM JST August 23 2010
===============================
SUBJECT: Category One Typhoon In South China Sea
At 3:00 AM UTC, Tropical Storm Mindulle (994 hPa) located at 16.1N 110.5E has 10 minute sustained winds of 35 knots with gusts of 50 knots. The storm is reported as moving west at 12 knots
Dvorak Intensity:
Gale Force Winds
=================
150 NM from the center
Forecast and Intensity
=======================
24 HRS: 18.1N 107.1E - 45 knots (CAT 1/Tropical Storm)
45 HRS: 19.8N 105.4E - 45 knots (CAT 1/Tropical Storm)
69 HRS: 21.0N 103.0E - 30 knots (Tropical Depression)
Was quite easy to figure out Baton Rouge, considering your handle is "truecajun". DOH!
Not seeing any warnings nor watches for your area. Should be over pretty soon.
I'm thinking more of the mid level circulation dragging the LLC under it.
Check the nice outflow to the E of that.
thanks.
Unless you live in Bermuda. Then that last one is huge. ;)
Gust fronts can produce nasty straight line winds of CAT 2 strength. Dry line between the gust front and the storm complex is why you weren't seeing any rain.
I totaly agree here. Believe me, I will definetly watch this storm and every other storm that forms in the Atlantic. I think we get use to the models and forget the fact that theres a lot to play here. Time has to be right, in order for the troughs to steer Danielle out to sea. What if Danielle slows down or stalls. What if Danielle changes track. A lot of People are going to be in danger. Seeing that Danielle if forecasted to strengthen with time.jmo.
Why?
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