berrywr
Weather Analyst
Reged: Fri
Posts: 387
Loc: Opelika, AL
|
|
I'm over from the Facebook page...but I haven't forgotten as Ed likes to call it "the dark side". The NOAA AOML page really highlights what Ed refers to in his post - http://www.aoml.noaa.gov/hrd/Storm_pages/chantal2013/wind.html. One of these days I will remember how to post an image!
--------------------
Sincerely,
Bill Berry
"Survived Trigonometry and Calculus I"
|
berrywr
Weather Analyst
Reged: Fri
Posts: 387
Loc: Opelika, AL
|
|
Last night's and low level models are in that camp. The problem with the graphic is, it has to assume Chantal will have enough vertical depth and overall structure to be steered by the mid-level flow. As Lois mentioned; you don't see many systems this far south "racing" west...it takes a pretty strong low to mid level ridge to do that and for any of us who enjoyed being sandwiched between that big upper level trough and the ridge last week knows all to well that was quite an impressive plume of moisture shot up to Canada. I think the models have done a fantastic job and we all have to remember what the parameters of each of these models are; one cannot expect the and to handle shallow systems well; that's not what their designed to do. One of the things I have noted over the past few hurricane seasons is this persistent shear aloft and I'm not just referring to the Central Atlantic Tropospheric Trough but just enough of a Eastern US trough that separates the mid-continental upper hot ridge from its wet cousin the upper Bermuda ridge. It doesn't look like much in the low to mid levels but up in the 300 to 200 millibars...that trough is quite pronounced and if Chantal was a deeper system then NC might have something to worry about. I've seen that shear pretty consistent due to this trough that sets up over the Eastern US aloft and given where all the upper level players are right now; there is a band of 30 to 50 knots of shear aloft right over Chantal's current path...if she remains on this persistent 280 vector; it's over. It's hard to fly against persistence given how shallow she is. What I fear is a center reformation further north.
--------------------
Sincerely,
Bill Berry
"Survived Trigonometry and Calculus I"
|
ftlaudbob
Storm Chaser
Reged: Tue
Posts: 828
Loc: Valladolid,Mx
|
|
The has now downgraded it to a R. Low.
--------------------
Survived: 10 hurricanes in Rhode Island,Florida and the Yucatan of Mexico .
|
Robert
Weather Analyst
Reged: Sat
Posts: 364
Loc: Southeast, FL
|
|
It apeared to me today that, chantel hit hispanola . Or she split and the mid went nw and is now touching down
To the north of hispanola.
Well anyway there is big blow up of convection in the Bahamas now with what looks like a spin.
The weather at turtle cove provendencials has been out of the south now witha wind gust of 36 mph out of the sse
. Provendencials is the southern most island in the bahamas. pressure is also down to 29.95
|
Ed Dunham
Former Meteorologist & CFHC Forum Moderator (Ed Passed Away on May 14, 2017)
Reged: Sun
Posts: 2565
Loc: Melbourne, FL
|
|
Convection has again re-fired near the remnant center of former tropical cyclone Chantal - roughly NNW of the western tip of Jamaica. Here is a link to a good alternate satellite data source for viewing worldwide systems with animation and zoom capability. Images for GOES East are normally available about 10 minutes after the image time, i.e., the image for 1315 is usually available by 1325 (which is quite fast). The pictures are provided by the Space Science & Engineering Center (SSEC) at the University of Wisconsin at Madison.
SSEC Geostationary Satellite Image Browser
Try a Water Vapor loop and zoom in on the remnant location of Chantal's convective flareup.
ED
|
Lamar-Plant City
Storm Tracker
Reged: Mon
Posts: 383
Loc: Plant City, Florida
|
|
Ed, you JUST beat me to that observation. A nice flare of convection between Jamaica and Cuba. Does this reflect energy that had been associated with Chantal. With that popping, it looks as if the convection has blown off to the north but her heart is still moving westward and looking for new moisture and less shear to get back together. Or am I just imagining things? Still looks like a lot of westward sheer in front of this area, though.
--------------------
If you don't like the weather, wait 5 minutes...
2023 Season Prediction: 17/6/2
|
Ed Dunham
Former Meteorologist & CFHC Forum Moderator (Ed Passed Away on May 14, 2017)
Reged: Sun
Posts: 2565
Loc: Melbourne, FL
|
|
No, you've got it right. A swirl, probably even low-level, is still seen near 20N 79.5W at 11/17Z with convection displaced to the east and southeast by moderate west northwesterly windshear. The shear is expected to last about another 24 to 30 hours as the remnant low moves toward the west northwest under low-level windflow. The current graphic Outlook highlights an area north of Cuba (in the Bahamas) for possible relocation/redevelopment, but that area is going to remain under strong westerly windshear. The better area for redevelopment (if any) will be closer to extreme western Cuba in a couple of days.
ED
|
MikeC
Admin
Reged: Sun
Posts: 4543
Loc: Orlando, FL
|
|
Ok there is a 96L being tracked which is actual a renumber for storm 3 / AKA Chantal, so if the system were to reform it would not retain the Chantal name (reformation is still fairly unlikely).
This odd case isn't really handled by the automated systems really well, so both with show up here until probably tomorrow.
|
berrywr
Weather Analyst
Reged: Fri
Posts: 387
Loc: Opelika, AL
|
|
Unless there are two distinct circulations; Chantal will continue. While I don't like where the track suddenly moved NW to a position N of Cuba; you can't dismiss the south track which in time has a better opportunity of regeneration when the upper level trough weakens and the huge hot ridge establishes itself as it has over much of the nation. Satellite imagery depicts a full latitude trough from the Gulf of Mexico extending ENE and NE at 200 and 300 millibars and satellite loops depicts that rotation quite nicely. This is the best amount of convection I've seen in the past 48 hours. I'm not prepared to say a north route is an early demise but a more southern center has a better outcome given its relationship to a departing trough in a couple of days. One more thing while we tend to look at the and and their ensembles; hat's off to that relic we call the NAM; 48 hours it put the southern extent of the remnants right were it is now.
--------------------
Sincerely,
Bill Berry
"Survived Trigonometry and Calculus I"
|
doug
Weather Analyst
Reged: Mon
Posts: 1006
Loc: parrish,fl
|
|
I do not see any low level circulation this morning. The convection is likely due to difluence between the SW of the peninsula and the ridge to the east, IMO.
--------------------
doug
|
doug
Weather Analyst
Reged: Mon
Posts: 1006
Loc: parrish,fl
|
|
There is some sign of a cyclonic turn around 28/86 in the NGOM as per the RGB.
--------------------
doug
|
danielw
Moderator
Reged: Wed
Posts: 3525
Loc: Hattiesburg,MS (31.3N 89.3W)
|
|
ATCF has been generated for an area of disturbed weather in the SW GOM. Around Noon today the area exhibited a -like central area in IR imagery. Coordinates are 23.0N/ 95.0W 1009mb and 20 mph winds.
AL, 97, 2013071618, , BEST, 0, 230N, 950W, 20, 1009, DB, 34, NEQ, 0, 0, 0, 0, 1012, 150, 60, 0, 0, L, 0, , 0, 0, INVEST, M,
http://www.ssd.noaa.gov/PS/TROP/floaters/97L/97L_floater.html
Another area that caught my eye is over the Bahamas with a large thunderstorm complex situated between Andros Island and Guantanamo,Cuba.
|
danielw
Moderator
Reged: Wed
Posts: 3525
Loc: Hattiesburg,MS (31.3N 89.3W)
|
|
Note. INVESTs are usually Not issued for 20 MPH systems. I should have keyed in on that since the had no mention.
Dr Knabb posted that is was a test run for a new supercomputer that goes online shortly.
|
Previous
Index
Next
Threaded
[Re: 
Edit
Reply
Quote
