TD 7 dies; 93L little threat to develop
Tropical Depression Seven is dead, ripped apart by moderate wind shear of 10 - 20 knots this Saturday morning. The storm was too small and fragile to survive the shear, thanks to dry air from the Sahara that had infiltrated the storm environment. None of the reliable models forecasts that TD 7 will regenerate as it tracks westwards across the Caribbean over the next four days. The remains of the storm should arrive in Mexico's Yucatan Peninsula on Wednesday.

Figure 1. Morning satellite image of the remnants of TD 7.
93L
A large tropical wave(Invest 93L) is located in the Eastern Atlantic about 300 miles northwest of the Cape Verde Islands. Satellite loops show a pronounced spin to the atmosphere at mid levels, but little in the way of heavy thunderstorm activity. The latest Saharan Air Layer Analysis from the University of Wisconsin shows that there is a large area of dry air from the Sahara surrounding 93L, which has infiltrated into the storm. This dry air will be a significant impediment to development during the coming week, as the 8 am EDT run of the SHIPS model predicts dryness at mid-levels of the atmosphere will increase during the next five days. None of the reliable computer models develop 93L during the coming seven days, and the storm is expected to move west-northwest and then north, recurving well to the east of Bermuda. In their 8 am Tropical Weather Outlook, NHC gave 93L a 20% chance of becoming a tropical depression by Monday morning.
I'll have a new post on Sunday.
Jeff Masters
Reader Comments
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Amen. Wishcasters just have a sickness I keep telling myself. It keeps me from going crazy on them.
I was without power in my neighborhood for 6 months after Andrew. I was in the middle of Cutler Ridge in south Dade. I know what the power of 165 mph sustained winds can do, and its not fun to think you are going to die for 4 hours of storm, and then in the aftermath wished you had died because of the nightmare I lived afterwards.
I had to even shoot someone to protect my property. I've never lost that guilty feeling even though it was in self-defense.
whatever Wash, let em be...I love tracking storms and the excitement of them heading towards me..I have been through at LEAST 10 storms..three of them majors..I have been without power for over three weeks in NC humidity..standing in lines in 100 degree weather for ice..having to rebuild..but yet I am still here tracking storms..you dont have to explain yourself..some will admit and some wont..
We got the ice and loss of power..will never forget that one
I don't ask you people for much, but I would really like it if you would read my blog. I just did. You may find it useful considering the discussions.
Go ahead, go take a look. It is brief.
+1000000. The only people on here with a sickness are those who bash the folks who are excited about hurricanes. None of us are wishing for death and/or destruction. We just admire and are in awe of these magnificent heat engines that none of us have any influence over. Blame mother nature for your situation, not your fellow weather enthusiast.
whats that in the BOC? 144 hours
Thanks LoneStarWeather.
It is certainly looking mighty suspicious and much stronger than 6 hours ago. The vort at 850 mb has spiked up as well.
I don't mind the adults so much, but the kids sometimes get to me. They don't understand what they are wishing for.
just saying this Could Be
also remeber I said yesterday that ULL in the atlantic would move S and the one in the NW caribbean would move NW and that an ULAC could develop well I think that could be happening
so for NOW 10% for RDEVELOPMENT
depending on what happen to the conditions later today and tomorrow that 10% could be bumped up
What you are seeing is an unexpected flareup of convection. Let's see how long it lasts.
This is what I would call: "A ludicrously long time from now."
you could be corect but for now I'll leave it as open wave
168..l'm a adult and fully know what I'm getting into.
Definitely no resumption of a surface low at this time with 97L as winds here would have to also be out of the West.
You also need to take into account the dry sinking air in front of the system.
they must have been reading this blog lately..the models dont have a handle on the severe weather threat
.NEAR TERM /THROUGH TONIGHT/...
AS OF 1:25 PM SATURDAY...MAIN FORECAST DILEMMA WILL BE POPS MAINLY
FOR THE OVERNIGHT HOURS AS THE GFS AND TO SOME EXTENT THE NAM ARE
BULLISH ON THE SYNOPTIC SCENARIO. IT APPEARS THE MAIN 200MB JET
ROTATES PERFECTLY ACROSS THE REGION FOR RIGHT ENTRANCE REGION
DYNAMICS AND WITH WATER VAPOR IMAGERY SHOWING A MOISTURE LADEN
ATMOSPHERIC RIVER...CATEGORICAL POPS SEEM LIKE A LOGICAL CHOICE.
THIS FEATURE APPEARS TO BE THE CATALYST FOR THE CONVECTION CURRENTLY
ALONG THE GULF COAST. WILL NOWCAST THE NEXT FEW HOURS...THEN A MORE
GENERALLY 80-90 POP FOR THE OVERNIGHT EARLY MORNING HOURS.
MAINTAINED A STRATEGY OF GOING SLIGHTLY WARMER THAN GUIDANCE FOR LOW
TEMPERATURES.
Conditions ahead of ex td7 are alot less hostile for redevelopment than they are now , just my opinion though, I've seen storms die out in this area only to strengthen again central caribbean.
Never say never but conditions also dry as a bone
I'm wondering why you think that an inactive CV season would lead to a more active home grown season. Your reasoning please.
nice blog gro, you should have been a teacher.
Very funny! :)
hey 954, Getting those heavy rains right now?
That blog is exactly correct. The hard part of psychological aspects is getting people to see their own behavior in an objective light.
Yep,nice cool and refreshing! How's bout u? BTW I didn't find any bugs on my trees this morning.
WKC, the blob over Grenada and Venezuela looks better than the leftovers from TD7. I suspect a 10% chance of redevelopment is being generous. I've sailed through many a tropical wave that looked more threatening than what I see on the satellite now.
:)
He worked for the CIA you know.
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