ATL: DORIAN - Post-Tropical - Discussion

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Re: ATL: DORIAN - Hurricane - Discussion

#2461 Postby HDGator » Wed Aug 28, 2019 10:26 pm

Steve wrote:They don’t. My point is that if it’s a major, it’s not particularly likely that it would follow the advisory plots at their current advisory intensity forecast. I also agree with those who say they want a couple more runs before honing in on FL landfall. They have access to early cycle stuff way before we all do, so perhaps what’s available to them so far hasn’t resulted in specific track confidence for them to have changed their cone or advisory plots.<— was to blinhart. Posts are moving fast

I see them straddling two potential scenarios by the competing models. One has a strengthening ridge that pushes Dorian across the state into GOM and the second has a weaker ridge that starts a stall/recurve that's difficult to accurately predict 5 days out. Instead they straddled the two model groups in the middle with the TVCN and put the whole state in the cone for a major on a path that's not likely to happen out of no better option.
The result I fear is that someone south or north may be in for something much worse than they expect from concentrating on the 'line' nobody is supposed to concentrate on but everybody does. I don't envy the NHC position given the current uncertainty but we'll have to see how this plays out. Let's hope the major models somehow resolve some consistency overnight because tomorrow is starting to be last call for some evacuations - especially South Florida.
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Re: ATL: DORIAN - Hurricane - Discussion

#2462 Postby Craters » Wed Aug 28, 2019 10:28 pm

Blinhart wrote:
tgenius wrote:The tracks are updated every 6 hours. 5AM/5PM and 11AM/11PM


Then why didn't they change a single point this advisory, they are exactly the same as the 8pm.


Try going here

https://www.nhc.noaa.gov/archive/2019/D ... _with_line

You can halt the sequence with the "Stop" button above the graphic and then use the < and > buttons to advance the frames one at a time. Then you can see that the plotted points did change slightly between the 8:00 AST and 11:00 AST advisories. Or at least they look that way to me...
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Re: ATL: DORIAN - Hurricane - Discussion

#2463 Postby STRiZZY » Wed Aug 28, 2019 10:30 pm

beachman80 wrote:ICON model is actually nudging a bit north in 0z. It always had been extreme south Fla. for the longest time. Seems to be targeting more central fla. now.


Just dipped WSW
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Re: ATL: DORIAN - Hurricane - Discussion

#2464 Postby wx98 » Wed Aug 28, 2019 10:30 pm

The fluctuations have began. Last two passes from recon shows higher pressures back up in the 990s.
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Re: ATL: DORIAN - Hurricane - Discussion

#2465 Postby TallyTracker » Wed Aug 28, 2019 10:31 pm

eastcoastFL wrote:
TallyTracker wrote:I went to the grocery store tonight to get some nonperishables and bottled water. Managed to get the last two cases of water. Most of the bread was already gone as well. Got gas in both cars too as a precaution. Folks here are taking this very seriously.


Where is here?


Tallahassee, FL Currently barely in the cone. We’re probably 6 days from any major impacts.
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Re: ATL: DORIAN - Hurricane - Discussion

#2466 Postby beachman80 » Wed Aug 28, 2019 10:32 pm

STRiZZY wrote:
beachman80 wrote:ICON model is actually nudging a bit north in 0z. It always had been extreme south Fla. for the longest time. Seems to be targeting more central fla. now.


Just dipped WSW


Yup...and seems to be stalling out just off Miami.
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Re: ATL: DORIAN - Hurricane - Discussion

#2467 Postby tropicwatch » Wed Aug 28, 2019 10:33 pm

Quite a bit of difference with the winds in the northwest quadrant. The last pass has winds 20-30mph higher winds then the previous pass.
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Re: ATL: DORIAN - Hurricane - Discussion

#2468 Postby TallyTracker » Wed Aug 28, 2019 10:37 pm

wx98 wrote:The fluctuations have began. Last two passes from recon shows higher pressures back up in the 990s.


The satellite shows what appears to be a dry slot on the east side of the eyewall. This may be temporarily leveling off the intensification. Once that is mixed out, pressure drops should resume.
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Re: ATL: DORIAN - Hurricane - Discussion

#2469 Postby KC7NEC » Wed Aug 28, 2019 10:37 pm

Just to show the slight adjustment between Adv 18 & 19 here is the tracks of both:

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Re: ATL: DORIAN - Hurricane - Discussion

#2470 Postby 1900hurricane » Wed Aug 28, 2019 10:40 pm

Probably due to the dry air intrusion, pressure is back up almost 10 mb. SFMR barely supports a hurricane now too.
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Re: ATL: DORIAN - Hurricane - Discussion

#2471 Postby wx98 » Wed Aug 28, 2019 10:41 pm

TallyTracker wrote:
wx98 wrote:The fluctuations have began. Last two passes from recon shows higher pressures back up in the 990s.


The satellite shows what appears to be a dry slot on the east side of the eyewall. This may be temporarily leveling off the intensification. Once that is mixed out, pressure drops should resume.


Yes, I was pretty satisfied that's what it was. I'm just pointing out that the intensity fluctuations caused by these "gulps" of dry air have began to occur.
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Re: ATL: DORIAN - Hurricane - Discussion

#2472 Postby Evil Jeremy » Wed Aug 28, 2019 10:42 pm

panamatropicwatch wrote:Quite a bit of difference with the winds in the northwest quadrant. The last pass has winds 20-30mph higher winds then the previous pass.


Well I do believe that there was missing recon data from that first NW to SE pass... was that information ever recovered?
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Re: ATL: DORIAN - Hurricane - Discussion

#2473 Postby Hurricaneman » Wed Aug 28, 2019 10:44 pm

1900hurricane wrote:Probably due to the dry air intrusion, pressure is back up almost 10 mb. SFMR barely supports a hurricane now too.

Also inflow temporarily stopped or slowed due to The mountains of Puerto Rico but seems to have returned the last hour or so
Last edited by Hurricaneman on Wed Aug 28, 2019 10:45 pm, edited 1 time in total.
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Re: ATL: DORIAN - Hurricane - Discussion

#2474 Postby wx98 » Wed Aug 28, 2019 10:44 pm

Evil Jeremy wrote:
panamatropicwatch wrote:Quite a bit of difference with the winds in the northwest quadrant. The last pass has winds 20-30mph higher winds then the previous pass.


Well I do believe that there was missing recon data from that first NW to SE pass... was that information ever recovered?


Yes, I noticed it was missing of Tropical Tidbits and I went back later and it was there.
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Re: ATL: DORIAN - Hurricane - Discussion

#2475 Postby AutoPenalti » Wed Aug 28, 2019 10:49 pm

Seems to be a temporary fluctuation.
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Re: ATL: DORIAN - Hurricane - Discussion

#2476 Postby BobHarlem » Wed Aug 28, 2019 10:50 pm

wx98 wrote:
Evil Jeremy wrote:
panamatropicwatch wrote:Quite a bit of difference with the winds in the northwest quadrant. The last pass has winds 20-30mph higher winds then the previous pass.


Well I do believe that there was missing recon data from that first NW to SE pass... was that information ever recovered?


Yes, I noticed it was missing of Tropical Tidbits and I went back later and it was there.


When his website gets overloaded it leaves out bits, but seems to eventually recover (later).
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Re: ATL: DORIAN - Hurricane - Discussion

#2477 Postby viberama » Wed Aug 28, 2019 10:53 pm

AxaltaRacing24 wrote:
Steve wrote:
psyclone wrote:NHC has remained pretty consistent on an east central fl landfall. Just because we don't have a history of majors in that region (in our relatively short historical base) doesn't mean they're exempt. It's a coastline adjacent to warm ocean. there's no reason a hurricane can't move west at 27 or 28 latitude if steering favors that.


True. And we only have like 170 years of semi-reliable data which is a minute sample in time. But if something hasn’t happened before in at least that many generations, you have to logically question it until it happens.

I can't help but be skeptical of it until I see it happen. It is not impossible, but getting a landfall up there is very difficult and would take unique circumstances.


Why is it difficult? Just because it hasn't happened in our lifetime? I think Dorian could landfall anywhere on the east coast of Florida and the odds are all the same.
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Re: ATL: DORIAN - Hurricane - Discussion

#2478 Postby Kingarabian » Wed Aug 28, 2019 10:56 pm

Dorian's intensity finally matches its satellite appearance lol.
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Re: ATL: DORIAN - Hurricane - Discussion

#2479 Postby Chris_in_Tampa » Wed Aug 28, 2019 10:57 pm

BobHarlem wrote:
wx98 wrote:
Evil Jeremy wrote:
Well I do believe that there was missing recon data from that first NW to SE pass... was that information ever recovered?


Yes, I noticed it was missing of Tropical Tidbits and I went back later and it was there.


When his website gets overloaded it leaves out bits, but seems to eventually recover (later).

Some obs aren't transmitted in order when there are transmission issues for example. That occurred some tonight. Eventually they get added back by his system. I'm not sure if it is through the same way he gets normal obs or if he also checks the NHC recon archive where missed obs are usually added to eventually. Sometimes when they catch up with obs they put them out so fast that you can't retrieve them in the file they exist in. (https://tgftp.nws.noaa.gov/data/raw/ur/urnt15.knhc..txt) He might instead get them directly through NOAAPort.
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Re: ATL: DORIAN - Hurricane - Discussion

#2480 Postby ozonepete » Wed Aug 28, 2019 11:01 pm

Frank2 wrote:
The actual track of the hurricane in 3 to 5 days will depend on how much the western Atlantic ridge builds during that time frame. This is, of course, subject to uncertainty.


That from the NHC TCD - if they hedged any further I'd need a pair of clippers. Apparent the forecaster is saying he isn't sure of the turn..



Hi Frank. Yes he's trying to hold off the wolves until they can see much more solid signs that the ridge will really build westward. Nobody can tell just yet. This is the fun part (read challenging) for forecasters. :lol:
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