ATL: HANNA - Remnants - Discussion

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Re: ATL: HANNA - Tropical Storm - Discussion

#821 Postby jaguars_22 » Fri Jul 24, 2020 4:47 am

It looks to me like the nam is beginning to push a littler further north. If this thing reaches cat 2 could it come in at port o Connor still? Or is the high still too strong
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Re: ATL: HANNA - Tropical Storm - Discussion

#822 Postby CyclonicFury » Fri Jul 24, 2020 4:54 am

Buoy 42395, which is NE of the center, reported a 33.1 kt sustained wind with a 44.7 kt gust.
Last edited by CyclonicFury on Fri Jul 24, 2020 5:02 am, edited 1 time in total.
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Re: ATL: HANNA - Tropical Storm - Discussion

#823 Postby Ubuntwo » Fri Jul 24, 2020 4:59 am

CyclonicFury wrote:Buoy 43295, which is NE of the center, reported a 33.1 kt sustained wind with a 44.7 kt gust.

Can't find a buoy 43295 on NDBC, mind linking?
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Re: ATL: HANNA - Tropical Storm - Discussion

#824 Postby GCANE » Fri Jul 24, 2020 5:00 am

Current estimate from SATCON is 997 mb, 44 knots.
Let's see what recon says.
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Re: ATL: HANNA - Tropical Storm - Discussion

#825 Postby CyclonicFury » Fri Jul 24, 2020 5:02 am

Ubuntwo wrote:
CyclonicFury wrote:Buoy 43295, which is NE of the center, reported a 33.1 kt sustained wind with a 44.7 kt gust.

Can't find a buoy 43295 on NDBC, mind linking?

Meant to type 42395
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Re: ATL: HANNA - Tropical Storm - Discussion

#826 Postby GCANE » Fri Jul 24, 2020 5:08 am

A tower going off a couple miles south of the CoC.
Not sure if a P3 can handle going thru this at 1500 ft.
Strong feeder-band convection firing up to the NE.
The longer the shrimp tail, the stronger this gets.

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Re: ATL: HANNA - Tropical Storm - Discussion

#827 Postby supercane4867 » Fri Jul 24, 2020 6:00 am

Hanna is looking rather healthy this morning.
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Re: ATL: HANNA - Tropical Storm - Discussion

#828 Postby NDG » Fri Jul 24, 2020 6:03 am

Recon already observing higher flight level winds than on last night's mission.

105500 2634N 09035W 9205 00827 0111 +224 +213 167034 036 025 000 00
105530 2633N 09037W 9231 00805 0111 +227 +212 168033 034 025 000 00
105600 2632N 09038W 9228 00806 0110 +229 +205 166037 039 025 000 00
105630 2631N 09040W 9230 00804 0109 +227 +214 165040 040 025 000 00
105700 2629N 09041W 9229 00805 0110 +232 +193 167040 041 026 000 00
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Re: ATL: HANNA - Tropical Storm - Discussion

#829 Postby NDG » Fri Jul 24, 2020 6:21 am

111130 2620N 09136W 9239 00777 0089 +224 +219 189033 035 034 006 00
111200 2620N 09138W 9240 00774 0088 +224 +216 190036 037 032 005 00
111230 2620N 09140W 9239 00775 0089 +223 +212 193037 037 029 005 00
111300 2620N 09142W 9239 00776 0089 +224 +206 196039 040 029 006 00
111330 2620N 09144W 9238 00775 0088 +223 +209 193039 039 031 006 00
111400 2620N 09146W 9240 00774 0087 +221 +210 191039 039 030 006 00
111430 2620N 09148W 9240 00772 0087 +220 +209 190039 040 030 005 00
111500 2620N 09150W 9240 00773 0087 +222 +208 190040 041 032 004 00
111530 2620N 09152W 9239 00772 0087 +221 +207 191040 041 032 004 00
111600 2620N 09154W 9238 00775 0087 +222 +203 195041 043 030 006 00
111630 2620N 09156W 9239 00775 0089 +216 +209 198044 045 033 006 00
111700 2620N 09158W 9239 00772 0088 +216 +211 201044 044 032 008 00
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Re: ATL: HANNA - Tropical Storm - Discussion

#830 Postby NDG » Fri Jul 24, 2020 6:42 am

I guess some dry air and light northerly shear has gotten into Hannah during the night, recon finding the CoC on the northern edge of the convection.

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Re: ATL: HANNA - Tropical Storm - Discussion

#831 Postby Ubuntwo » Fri Jul 24, 2020 6:45 am

NDG wrote:I guess some dry air and light northerly shear has gotten into Hannah during the night, recon finding the CoC on the northern edge of the convection.

Doesn't look like a dry air issue considering the hefty convection. With the system's tilt to the south, northerly shear looks like the main culprit.
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Re: ATL: HANNA - Tropical Storm - Discussion

#832 Postby zhukm29 » Fri Jul 24, 2020 6:49 am

Winds are still relatively weak. Luckily, this thing will run out of time soon - the 55 kt forecast that NHC has seems right on the mark (barring some ridiculous RI, which seems less likely given the storm's current sheared structure).
Last edited by zhukm29 on Fri Jul 24, 2020 6:49 am, edited 1 time in total.
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Re: ATL: HANNA - Tropical Storm - Discussion

#833 Postby GCANE » Fri Jul 24, 2020 6:49 am

I think its the remnants from the hole last night.
I consider it a bubble of warm core air from all the latent heat flowing into it due to the surrounding convection.
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Re: ATL: HANNA - Tropical Storm - Discussion

#834 Postby NDG » Fri Jul 24, 2020 6:51 am

Pressure down to ~1000mb.

113930 2713N 09246W 9255 00697 0005 +252 +226 086019 020 024 011 03
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Re: ATL: HANNA - Tropical Storm - Discussion

#835 Postby AveryTheComrade » Fri Jul 24, 2020 6:53 am

Storm seems weaker than I thought it might be, 55kt peak seems a little high considering how little time it has left
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Re: ATL: HANNA - Tropical Storm - Discussion

#836 Postby HurricaneAndre2008 » Fri Jul 24, 2020 6:57 am

Yall know nhc is conservative right.
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Re: ATL: HANNA - Tropical Storm - Discussion

#837 Postby NDG » Fri Jul 24, 2020 7:02 am

Ubuntwo wrote:
NDG wrote:I guess some dry air and light northerly shear has gotten into Hannah during the night, recon finding the CoC on the northern edge of the convection.

Doesn't look like a dry air issue considering the hefty convection. With the system's tilt to the south, northerly shear looks like the main culprit.


Yep, definitely northerly shear now analyzed in the 10-15 knot range as the UL anticylone has pushed a little to the west of it.
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Re: ATL: HANNA - Tropical Storm - Discussion

#838 Postby NDG » Fri Jul 24, 2020 7:15 am

Compared to last night the strongest winds are now farther away from its LLC.
We wouldn't see rapid intensification today if the light to moderate shear continues.

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Re: ATL: HANNA - Tropical Storm - Discussion

#839 Postby hurricaneCW » Fri Jul 24, 2020 7:22 am

Euro has it intensifying quickly before landfall and that seems the likely course however it's generating some extremely strong convection right now.

If the shear lets up a tad that convection will envelop the center and then it could start intensifying earlier.
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Re: ATL: HANNA - Tropical Storm - Discussion

#840 Postby GCANE » Fri Jul 24, 2020 7:27 am

Satellite radar about 1.5 hrs ago.
Recon puts it a bit north.

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