WPAC: CHANTHU - Post-Tropical

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Re: WPAC: CHANTHU - Typhoon

#321 Postby TorSkk » Fri Sep 10, 2021 8:29 pm

Awful job by the JTWC today constantly lagging many hours behind
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Re: WPAC: CHANTHU - Typhoon

#322 Postby mrbagyo » Fri Sep 10, 2021 9:05 pm

934.9 mb at Ivana, Batan island
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Re: WPAC: CHANTHU - Typhoon

#323 Postby sikkar » Fri Sep 10, 2021 9:23 pm


Impressive given how it relatively weakened, makes you think it peaked at or just below 900mb.
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Re: WPAC: CHANTHU - Typhoon

#324 Postby sikkar » Fri Sep 10, 2021 9:39 pm

That eastern eyewall brutalizing Itbayat, will probably destroy what Meranti didn't few years ago..
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Re: WPAC: CHANTHU - Typhoon

#325 Postby Iceresistance » Fri Sep 10, 2021 9:40 pm

I don't know what is going on with Chanthu (Kiko), but the typhoon is RAPIDLY weakening right now . . .

Northerly Wind Shear combined with Dry Air?

Image
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Re: WPAC: CHANTHU - Typhoon

#326 Postby NotoSans » Fri Sep 10, 2021 9:53 pm

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Re: WPAC: CHANTHU - Typhoon

#327 Postby Yellow Evan » Fri Sep 10, 2021 9:59 pm

935 lines up with CKZ if you assume an intensity of around 125 knots.
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Re: WPAC: CHANTHU - Typhoon

#328 Postby sikkar » Fri Sep 10, 2021 10:07 pm

Can we use radar velocities from Taiwan radar to estimate winds in Itbayat? The dBZ is off the charts.

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Re: WPAC: CHANTHU - Typhoon

#329 Postby Teban54 » Fri Sep 10, 2021 11:34 pm

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Re: WPAC: CHANTHU - Typhoon

#330 Postby shah83 » Fri Sep 10, 2021 11:57 pm

Yeah, all the models are showing a Shanghai Stall.
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Re: WPAC: CHANTHU - Typhoon

#331 Postby sikkar » Sat Sep 11, 2021 1:19 am

Appears to be ramping up again and starting to lift north.
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Re: WPAC: CHANTHU - Typhoon

#332 Postby Sciencerocks » Sat Sep 11, 2021 1:55 am

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Re: WPAC: CHANTHU - Typhoon

#333 Postby CryHavoc » Sat Sep 11, 2021 2:37 am

Iceresistance wrote:I don't know what is going on with Chanthu (Kiko), but the typhoon is RAPIDLY weakening right now . . .

Northerly Wind Shear combined with Dry Air?

https://s9.gifyu.com/images/83391493.gif


It's always kind of sad to see a STY go. :\
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Re: WPAC: CHANTHU - Typhoon

#334 Postby mrbagyo » Sat Sep 11, 2021 3:52 am

Are Taiwan's NTU buoys near Orchid island still working?
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Re: WPAC: CHANTHU - Typhoon

#335 Postby tonypace » Sat Sep 11, 2021 4:20 am

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Re: WPAC: CHANTHU - Typhoon

#336 Postby dexterlabio » Sat Sep 11, 2021 5:11 am

CryHavoc wrote:
Iceresistance wrote:I don't know what is going on with Chanthu (Kiko), but the typhoon is RAPIDLY weakening right now . . .

Northerly Wind Shear combined with Dry Air?

https://s9.gifyu.com/images/83391493.gif


It's always kind of sad to see a STY go. :\



But it needs to go or else East Asia will be in bigger trouble :lol:

If I may guess, the reason for Chanthu's degredation is the steep drop in SSTs
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Re: WPAC: CHANTHU - Typhoon

#337 Postby aspen » Sat Sep 11, 2021 6:05 am

So the JTWC drops it down 5 kt when it’s clearly strengthening, but then keeps it as a Cat 5 when it’s clearly weakening?! What is up with them?
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Re: WPAC: CHANTHU - Typhoon

#338 Postby mrbagyo » Sat Sep 11, 2021 6:36 am

Probably the best footage I've seen so far for this typhoon

6:30 am (Philippine Standard Time), September 11, 2021
Super typhoon Chanthu (Kiko) started to ravage Sabtang Island of Batanes
Video © Dennis Ballesteros Valdez



Image
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Re: WPAC: CHANTHU - Typhoon

#339 Postby StormTracker89 » Sat Sep 11, 2021 7:00 am

aspen wrote:So the JTWC drops it down 5 kt when it’s clearly strengthening, but then keeps it as a Cat 5 when it’s clearly weakening?! What is up with them?


Did you read the discussion? At the time of the analysis, it was actually looking better, as noted by others on this site who noted the eye was clearing out again. But it didn't last long. Also it takes time for a system to spin down, just because the satellite presentation degrades does not equal an instantaneous reduction in the wind speed.
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Re: WPAC: CHANTHU - Typhoon

#340 Postby mrbagyo » Sat Sep 11, 2021 8:35 am

Image
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