Tropical Depression Seven forms
Tropical Depression Seven is here. Looking remarkably like the tropical depression that became Tropical Storm Ernesto on August 1, TD 7 has a limited region of heavy thunderstorms, as seen on satellite loops. A large amount of dry air to the west and north is visible on water vapor satellite loops, and this dry air is interfering with TD 7's heavy thunderstorms. Wind shear is a light 5 - 10 knots, which is quite favorable for intensification. Ocean temperatures are 26°C, which is a bit on the cool side, though. Winds at the Middle Atlantic buoy 41041 were 20 mph at 5 pm EDT, and should rise this evening, as the center of TD 7 passes about 50 miles to the south near midnight. The first hurricane hunter mission into TD 7 is scheduled for Saturday morning.

Figure 1. Satellite image of TD 7 as it was forming at 3:17 pm EDT August 9, 2012.
Forecast for TD 7
TD 7 formed about 400 miles east-northeast of where Ernesto became a tropical depression, as seen on our wundermap. Atmospheric and oceanic conditions are currently quite similar to what Ernesto experienced, and I expect TD 7 will struggle with dry air like Ernesto did. The SHIPS model predicts that shear will remain light through Friday then rise to the moderate range on Saturday, when the storm will encounter moderate shear from upper-level westerly winds associated with a trough of low pressure. Since conditions are so similar to what Ernesto experienced, the official NHC forecast of a 45 - 50 mph tropical storm moving through the Lesser Antilles Islands Saturday and Sunday is a reasonable one.
Jeff Masters
Reader Comments
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No problem, Dude!
Hey Pat.
I heard they were going to film an Unsolved Mysteries episode based on Karen disappearance.
Dude is an insult if you are a woman..
Like when you see your roommate drinking yer last Fresca..
Its Like "Dude"?
or when your friend wrecks yer car its alike.
.."DUDE"!!!!!!!!!!!!!
I would watch fo sho'.
This one was probably a blast to track.
Hello!
May very well be a browser issue. My eyes may be bad, but I'm seeing August 5 from this vantage point.
You're still my buddy though, Pat.
Hazel in 1954 and Donna in 1960. I was on Long Island in 1954 but in Norway in 1960. By the way, I nailed both of them.
My point was that there is fairly sound climatological evidence that major hurricanes are possible in that part of the CAR... so paranoid doesn't = wrong...
Glad to be back on the blog, ive been in the hospital for four days...although i have been lurking in the hospital bed with ipad in hand!!
Itsa all good..
: )
18z Early Cycle NHC model tracks
TD #7
Statistical/Simple Models (CLIPER,BAMs,LBAR,other Statistical Models)
Dynamic Models (More sophisticated models)
Early Model Wind Forecasts
Welcome back, hope your feeling better.
It's an impressive try against those mountains, which make the Rockies look like the Blue Ridge. Right now he's dealing with a couple 19,000 foot volcanoes.
That deserves a LOL.
There are always tropical waves....
Most never even make it to named storms!
It still is a possibility. All depends on how strong TD-7 becomes I guess. It's moving almost at the same speed as Ernesto was, 20mph.
TD-7 NHC Track
TD-5 Pre-Ernesto
Look at the end point. mmmm both just south of Jamaica.
Thanks Pat, i definitely am!! Glad u guys kept the tropics in line, although the next few weeks could get interesting!!
That's the spirit! Even hospitalization can't inhibit a true Wunder blogger from being here. Hope everything's okay.
LOL yes, i drove my wife crazy asking for the ipad to check the latest comments!!!
NWS NATIONAL HURRICANE CENTER MIAMI FL
500 PM PDT THU AUG 9 2012
FOR THE EASTERN NORTH PACIFIC...EAST OF 140 DEGREES WEST LONGITUDE..
THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON TROPICAL
STORM GILMA...LOCATED ABOUT 715 MILES WEST-SOUTHWEST OF THE
SOUTHERN TIP OF BAJA CALIFORNIA.
THE MID-LEVEL REMNANT CIRCULATION OF ATLANTIC TROPICAL STORM ERNESTO
IS EXPECTED TO MOVE INTO THE EASTERN PACIFIC OCEAN IN A DAY OR SO.
ENVIRONMENTAL CONDITIONS ARE EXPECTED TO BECOME MORE CONDUCIVE FOR
DEVELOPMENT AFTER THAT TIME. THERE IS A MEDIUM CHANCE...30
PERCENT...OF TROPICAL CYCLONE FORMATION OFF THE WEST-CENTRAL COAST
OF MEXICO DURING THE NEXT 48 HOURS.
ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE
NEXT 48 HOURS.
Dude, get a new computer or get a life.
Yeah, the mountains are definitely an issue, but luckily for him, it looks like he will miss the really tall ones in the Trans-Mexican Volcanic Belt just to the south.
I was in Jax FL during Donna in 1960 and I was not quite born :) in 1954 but I do remember Dora in 1964 also in Jacksonville, FL.
I understand where you're coming from..but if you look at the forecasted track of Florence once it became a tropical storm it was a more wnw path well north of the caribbean so obviously he wouldn't call for ex-Florence to be near the Cayman's. I've read these blogs for 7 years and I don't post much unless a storm is threatening my area along the Mississippi Coast and I've read my share of wishcasting on this blog in 7 years and put up with stormtop but the past week with Ernesto and now as soon as TD 7 formed he was calling for a major near the Cayman's
THE MID-LEVEL REMNANT CIRCULATION OF ATLANTIC TROPICAL STORM ERNESTO
IS EXPECTED TO MOVE INTO THE EASTERN PACIFIC OCEAN IN A DAY OR SO.
ENVIRONMENTAL CONDITIONS ARE EXPECTED TO BECOME MORE CONDUCIVE FOR
DEVELOPMENT AFTER THAT TIME. THERE IS A MEDIUM CHANCE...30
PERCENT...OF TROPICAL CYCLONE FORMATION OFF THE WEST-CENTRAL COAST
OF MEXICO DURING THE NEXT 48 HOURS.
That would be so awesome if Ernesto maintain it's name and strengthened in the EPAC. Would it's ACE count towards ours or the EPACs?
I don't think it would do that because if you look at storms in the past that did that...They had a name change like Hurricane Caesar - Douglas.
EPac, since it would have crossed basins (the previous ACE stays here in the Atlantic though), and yes, it would be quite awesome.
Evening Gro. Donna, I would never forget that one. Although I had experienced a couple of smaller storms Donna was my first direct hit, eye over my house storm. That was the one that gave me the weather geek bug.
Starting next year Ernesto would keep it's name on the EPac side if it's circulation survived Mexico. This year it would be Hurricane Ernesto - Hector though.
Well, long term models should be taken with a grain of salt anyway. Use it for like, general guidance of possibilities, but nothing more. Even when they're a few days away it's hard to know sometimes just what's going to happen.
Ever since 2002, the NHC has decided all crossover systems retain their names IIRC.
This is no kidding: today I was going to write the same thing! Gotta love the remnants of Karen, where ever they are!
Im not even going there with that one..
You can do it Ernesto.
Wow, who would have ever thought Ernesto would survive the Mexican mountains? It still looks quite organized I must say! Let's hope for the best for the folks out there..
Really? I thought that was decided in 2002 or so I read, could I have a link to any papers for that? Did not know.
They have changed the naming policy since then though, there just hasn't been one that has been able to maintain its name since then.
Link
Not that I know of. In the UK they tend to refer to us as Yanks. But they tend to mean it in some sort of negative way (which they have for nearly everyone) and being from California, find it odd to be referred to as a yank anyway, never having even been to the east coast or New York! To me, dude and man are pretty typical from Calif.
203 ncstorm: 'Dude' is an insult if you are a woman...
Is it? Women have been addressing groups of women as 'guys' since at least the late80s.
Current ACE Numbers
Active Storms = 3
Name Current Wind Max Wind ACE
ERNESTO
Current wind: 45
Max Wind: 75
A.C.E = 7.8125
GILMA
Current wind: 60
Max Wind: 70
A.C.E = 4.22
KIROGI
Current wind: 40
Max Wind: 45
A.C.E = 3.4425
Dora was a bad one. I do remember they expected that to move through the Caibbean because it started so low and had formed very close to Africa. But it certainly took a big turn. They learned a lot from that particular storm.
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