WPAC: KOINU - Post-Tropical

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Re: WPAC: KOINU - Tropical Storm

#21 Postby cycloneye » Fri Sep 29, 2023 4:23 pm

JMA upgrades to TS Koinu

T2314(Koinu)
Issued at 2023/09/29 19:15 UTC
Analysis at 09/29 18 UTC
Grade TS
Scale -
Intensity -
Center position N15°40′ (15.7°)
E132°10′ (132.2°)
Direction and speed of movement W 30 km/h (15 kt)
Central pressure 1000 hPa
Maximum sustained wind speed near center 18 m/s (35 kt)
Maximum wind gust speed 25 m/s (50 kt)
Radius of 30-kt wind area SW330 km (180 NM)
NE220 km (120 NM)
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Re: WPAC: KOINU - Tropical Storm

#22 Postby Hayabusa » Fri Sep 29, 2023 4:49 pm

EPS 12Z
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Re: WPAC: KOINU - Tropical Storm

#23 Postby ElectricStorm » Fri Sep 29, 2023 5:23 pm

Finally a named storm in this basin after the lull. I'm pretty concerned about this one though, Taiwan just had Haikui a few weeks ago they certainly don't need another strong storm.
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Re: WPAC: KOINU - Tropical Storm

#24 Postby underthwx » Sat Sep 30, 2023 8:39 am

Looks like the track shifted southward from the center of Taiwan, to the southern tip of Taiwan. Is the track going to continue shifting Southward? That seemed like a fairly significant change since last night...
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Re: WPAC: KOINU - Tropical Storm

#25 Postby doomhaMwx » Sat Sep 30, 2023 9:30 am

underthwx wrote:Looks like the track shifted southward from the center of Taiwan, to the southern tip of Taiwan. Is the track going to continue shifting Southward? That seemed like a fairly significant change since last night...

Models tend to have a north/rightward bias for TCs in this area. There's a good chance the forecast track will continue shifting south over the next few days, but I personally don't expect landfall in Mainland Luzon.
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Re: WPAC: KOINU - Tropical Storm

#26 Postby Sciencerocks » Sat Sep 30, 2023 1:54 pm

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Re: WPAC: KOINU - Tropical Storm

#27 Postby Sciencerocks » Sat Sep 30, 2023 6:00 pm

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Re: WPAC: KOINU - Tropical Storm

#28 Postby Sciencerocks » Sat Sep 30, 2023 10:25 pm

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Re: WPAC: KOINU - Tropical Storm

#29 Postby Hurricane2022 » Sun Oct 01, 2023 9:43 am

Is Koinu trying to become another Jova/Hagibis?
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Re: WPAC: KOINU - Tropical Storm

#30 Postby Sciencerocks » Sun Oct 01, 2023 12:38 pm

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Re: WPAC: KOINU - Tropical Storm

#31 Postby zzzh » Sun Oct 01, 2023 12:59 pm

Shear will increase to a whopping 35kt in about 24h.
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Re: WPAC: KOINU - Typhoon

#32 Postby cycloneye » Sun Oct 01, 2023 2:34 pm

Issued at 2023/10/01 18:50 UTC
Analysis at 10/01 18 UTC
Grade TY
Scale -
Intensity -
Center position N18°40′ (18.7°)
E128°00′ (128.0°)
Direction and speed of movement NW 10 km/h (6 kt)
Central pressure 975 hPa
Maximum sustained wind speed near center 35 m/s (65 kt)
Maximum wind gust speed 50 m/s (95 kt)
Radius of 50-kt wind area 95 km (50 NM)
Radius of 30-kt wind area SE560 km (300 NM)
NW390 km (210 NM)
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Re: WPAC: KOINU - Typhoon

#33 Postby Sciencerocks » Sun Oct 01, 2023 4:31 pm

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Re: WPAC: KOINU - Typhoon

#34 Postby Sciencerocks » Sun Oct 01, 2023 5:24 pm

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Re: WPAC: KOINU - Typhoon

#35 Postby Sciencerocks » Sun Oct 01, 2023 5:48 pm

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Re: WPAC: KOINU - Typhoon

#36 Postby cycloneye » Mon Oct 02, 2023 5:01 am

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Re: WPAC: KOINU - Typhoon

#37 Postby Sciencerocks » Mon Oct 02, 2023 9:34 am

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Re: WPAC: KOINU - Typhoon

#38 Postby Sciencerocks » Mon Oct 02, 2023 10:40 am

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Re: WPAC: KOINU - Typhoon

#39 Postby Sciencerocks » Mon Oct 02, 2023 12:50 pm

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Re: WPAC: KOINU - Typhoon

#40 Postby doomhaMwx » Mon Oct 02, 2023 8:39 pm

14W KOINU 231003 0000 20.5N 125.1E WPAC 105 950

T2314(Koinu)
Issued at 2023/10/03 00:50 UTC
Analysis at 10/03 00 UTC
Grade TY
Scale Large
Intensity Very Strong
Center position N20°30′ (20.5°)
E125°05′ (125.1°)
Direction and speed of movement WNW 10 km/h (6 kt)
Central pressure 940 hPa
Maximum sustained wind speed near center 45 m/s (90 kt)
Maximum wind gust speed 65 m/s (130 kt)
Radius of 50-kt wind area 165 km (90 NM)
Radius of 30-kt wind area 560 km (300 NM)
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