ATL: HERMINE - Post-Tropical - Discussion

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Aric Dunn
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Re: ATL: HERMINE - Tropical Storm - Discussion

#7381 Postby Aric Dunn » Thu Sep 01, 2016 12:40 am

SeGaBob wrote:
Aric Dunn wrote:pressure down to 998..

That's what it was at 11pm. Not really a drop. (yet)

sorry didn't complete my thought. 998mb ... still one set to go for full pass.
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Re: ATL: HERMINE - Tropical Storm - Discussion

#7382 Postby Aric Dunn » Thu Sep 01, 2016 12:42 am

unless it starts moving 12 to 15kts right now .. the early morning landfall friday is not happening..
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Re: ATL: HERMINE - Tropical Storm - Discussion

#7383 Postby Hammy » Thu Sep 01, 2016 12:42 am

Plane found decent TS winds (several 45kt unflagged) in the NE quad, which I believe was the first time they were present there, and a fairly large area for that matter.
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Re: ATL: HERMINE - Tropical Storm - Discussion

#7384 Postby cdavis6287 » Thu Sep 01, 2016 12:43 am

JKingTampa wrote:
cdavis6287 wrote:I feel stupid but.... north Fl/ Central NE/NW Fl.... The storm is coming!!!! Paul Revere living through me lol


Basically anyone from Sarasota to Destin. Haha.

Sorry.. Perry Fl south to Cedar Key
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Re: ATL: HERMINE - Tropical Storm - Discussion

#7385 Postby BRweather » Thu Sep 01, 2016 12:43 am

important to note that it did not move hardly any since 11PM EDT.

Lowest pressure was at 25.57N OF 998.4
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Re: ATL: HERMINE - Tropical Storm - Discussion

#7386 Postby txwatcher91 » Thu Sep 01, 2016 12:44 am

Latest frame of IR seems to indicate significant thickening of the cloud deck on the west side of the circulation, maybe the beginnings of a feeder band?
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Re: ATL: HERMINE - Tropical Storm - Discussion

#7387 Postby Aric Dunn » Thu Sep 01, 2016 12:45 am

Hammy wrote:Plane found decent TS winds (several 45kt unflagged) in the NE quad, which I believe was the first time they were present there, and a fairly large area for that matter.

yeah very slowly the NE inflow will pick up as the trough weakens. some point tonight we might actually get a fairly symmetrical system.. lol
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Re: ATL: HERMINE - Tropical Storm - Discussion

#7388 Postby Aric Dunn » Thu Sep 01, 2016 12:46 am

BRweather wrote:important to note that it did not move hardly any since 11PM EDT.

Lowest pressure was at 25.57N OF 998.4


yeah still just above drifting.. about 6mph.
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Re: ATL: HERMINE - Tropical Storm - Discussion

#7389 Postby cdavis6287 » Thu Sep 01, 2016 12:46 am

JKingTampa wrote:
cdavis6287 wrote:I feel stupid but.... north Fl/ Central NE/NW Fl.... The storm is coming!!!! Paul Revere living through me lol


Basically anyone from Sarasota to Destin. Haha.

Haha..Perry Fl to Cedar Key,Fl. There's always one folks!
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Re: ATL: HERMINE - Tropical Storm - Discussion

#7390 Postby txwatcher91 » Thu Sep 01, 2016 12:49 am

Aric Dunn wrote:
BRweather wrote:important to note that it did not move hardly any since 11PM EDT.

Lowest pressure was at 25.57N OF 998.4


yeah still just above drifting.. about 6mph.


Slower movement would not only give it more time to organize but would also create more havoc down the road for NC and states above it as it would phase sooner and closer to the coast.
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Re: ATL: HERMINE - Tropical Storm - Discussion

#7391 Postby Alyono » Thu Sep 01, 2016 12:51 am

txwatcher91 wrote:
Alyono wrote:pressure looked to be about the same

Getting sheared again. Center exposed based upon the aircraft data

One thing I noticed looking at the HRRR. This could start to transition to ET before landfall. it shows the system starting to take on a frontal structure as soon as this afternoon. Just something to monitor


HRRR verbatim also strengthens this rather quickly to sub 990mb by hour 16. It seems to reform the center SE under the heavier convection and then moves it N to NNE


This latest run is far different than previous, which were showing slight intensification along with ET
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Re: ATL: HERMINE - Tropical Storm - Discussion

#7392 Postby BRweather » Thu Sep 01, 2016 12:51 am

Image

dry air problematic
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Re: ATL: HERMINE - Tropical Storm - Discussion

#7393 Postby SeGaBob » Thu Sep 01, 2016 12:52 am

NHC says it's moving due north right now.
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Re: ATL: HERMINE - Tropical Storm - Discussion

#7394 Postby FLLurker32 » Thu Sep 01, 2016 12:53 am

cdavis6287 wrote:
JKingTampa wrote:
cdavis6287 wrote:I feel stupid but.... north Fl/ Central NE/NW Fl.... The storm is coming!!!! Paul Revere living through me lol


Basically anyone from Sarasota to Destin. Haha.

Haha..Perry Fl to Cedar Key,Fl. There's always one folks!


Let's try to NOT wish cast Cedar Key :eek: lol I'm in Marion county. While I know I'm going to get a little something being on the east side of it, I don't want to be THAT close.
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Re: ATL: HERMINE - Tropical Storm - Discussion

#7395 Postby txwatcher91 » Thu Sep 01, 2016 12:54 am

Alyono wrote:
txwatcher91 wrote:
Alyono wrote:pressure looked to be about the same

Getting sheared again. Center exposed based upon the aircraft data

One thing I noticed looking at the HRRR. This could start to transition to ET before landfall. it shows the system starting to take on a frontal structure as soon as this afternoon. Just something to monitor


HRRR verbatim also strengthens this rather quickly to sub 990mb by hour 16. It seems to reform the center SE under the heavier convection and then moves it N to NNE


This latest run is far different than previous, which were showing slight intensification along with ET


How useful/accurate is the HRRR for tropical systems? I've used it for severe weather setups but I'm not too familiar with using it for a tropical system.
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Re: ATL: HERMINE - Tropical Storm - Discussion

#7396 Postby BRweather » Thu Sep 01, 2016 12:55 am

Alyono wrote:
txwatcher91 wrote:
Alyono wrote:pressure looked to be about the same

Getting sheared again. Center exposed based upon the aircraft data

One thing I noticed looking at the HRRR. This could start to transition to ET before landfall. it shows the system starting to take on a frontal structure as soon as this afternoon. Just something to monitor


HRRR verbatim also strengthens this rather quickly to sub 990mb by hour 16. It seems to reform the center SE under the heavier convection and then moves it N to NNE


This latest run is far different than previous, which were showing slight intensification along with ET



I am looking at the most recent HRRR, what makes it look ET to you? curious
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Re: ATL: HERMINE - Tropical Storm - Discussion

#7397 Postby Aric Dunn » Thu Sep 01, 2016 12:56 am

motion aside. the low level structure is very defined finally... still some dynamical uncertainty. It seems from the progression the right side of the models seems much more plausible.
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Re: ATL: HERMINE - Tropical Storm - Discussion

#7398 Postby Alyono » Thu Sep 01, 2016 1:00 am

BRweather wrote:
Alyono wrote:
txwatcher91 wrote:
HRRR verbatim also strengthens this rather quickly to sub 990mb by hour 16. It seems to reform the center SE under the heavier convection and then moves it N to NNE


This latest run is far different than previous, which were showing slight intensification along with ET



I am looking at the most recent HRRR, what makes it look ET to you? curious


was looking at the previous few runs. The new one is fully tropical. I wasn't exactly believing the other ones, but keeping note of the possibility
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Re: ATL: HERMINE - Tropical Storm - Discussion

#7399 Postby BRweather » Thu Sep 01, 2016 1:03 am

Alyono wrote:
BRweather wrote:
Alyono wrote:
This latest run is far different than previous, which were showing slight intensification along with ET



I am looking at the most recent HRRR, what makes it look ET to you? curious


was looking at the previous few runs. The new one is fully tropical. I wasn't exactly believing the other ones, but keeping note of the possibility


okay yes I see...02Z looks ET. interesting
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Re: ATL: HERMINE - Tropical Storm - Discussion

#7400 Postby JKingTampa » Thu Sep 01, 2016 1:09 am

On the last few Tampa Bay radar frames, looks like banding could be coming back.
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