WPAC: KRATHON - Post-Tropical

[xtyphooncyclonex]

Officially a typhoon

T2418(Krathon)
Issued at 2024/09/29 04:10 UTC
Analysis at 09/29 03 UTC
Grade TY
Scale -
Intensity -
Center position N19°00′ (19.0°)
E124°20′ (124.3°)
Direction and speed of movement NNW Slow
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 110 km (60 NM)
Radius of 30-kt wind area 440 km (240 NM)

ADT going bonkers. Krathon is exploding they say

UW - CIMSS
ADVANCED DVORAK TECHNIQUE
ADT-Version 9.1
Tropical Cyclone Intensity Algorithm

----- Current Analysis -----
Date : 29 SEP 2024 Time : 044000 UTC
Lat : 18:51:04 N Lon : 123:59:18 E


CI# /Pressure/ Vmax
5.3 / 959.6mb/ 97.2kt


Final T# Adj T# Raw T#
5.3 5.2 5.2

Estimated radius of max. wind based on IR :N/A km

Center Temp : -31.8C Cloud Region Temp : -64.7C

Scene Type : EYE

Subtropical Adjustment : OFF

Extratropical Adjustment : OFF

Positioning Method : FORECAST INTERPOLATION

Ocean Basin : WEST PACIFIC
Dvorak CI > MSLP Conversion Used : CKZ Method

Tno/CI Rules : Constraint Limits : NO LIMIT
Weakening Flag : OFF
Rapid Dissipation Flag : OFF

C/K/Z MSLP Estimate Inputs :
- Average 34 knot radii : 91nmi
- Environmental MSLP : 1008mb

Satellite Name : HIM-9
Satellite Viewing Angle : 29.2 degrees

[Hayabusa]

SMAP pass around 28/22z == 85 knots

WP, 20, 202409282208, 30, SMAP, IR, , 1870N, 12430E, , 1, 79, 1, , , , 34, NEQ, 0, 0, 146, 87, , , , , 1, 0, , W, NASA, RSS, , , , , , , , , , , , , , , , , , , , , , , , , , , , 1, max. wind is 10 minute sustained
WP, 20, 202409282208, 30, SMAP, IR, , 1870N, 12430E, , 1, 79, 1, , , , 50, NEQ, 0, 0, 0, 43, , , , , 1, 0, , W, NASA, RSS, , , , , , , , , , , , , , , , , , , , , , , , , , , , 1, max. wind is 10 minute sustained
WP, 20, 202409282208, 30, SMAP, IR, , 1870N, 12430E, , 1, 79, 1, , , , 64, NEQ, 0, 0, 0, 0, , , , , 1, 0, , W, NASA, RSS, , , , , , , , , , , , , , , , , , , , , , , , , , , , 1, max. wind is 10 minute sustained

[cycloneye]

 https://x.com/WillWeatherRVA/status/1840455995677696342

[Travorum]

ADT has raw T# up to 6.7 now:

UW - CIMSS
ADVANCED DVORAK TECHNIQUE
ADT-Version 9.1
Tropical Cyclone Intensity Algorithm

----- Current Analysis -----
Date : 29 SEP 2024 Time : 183000 UTC
Lat : 19:55:48 N Lon : 122:24:36 E


CI# /Pressure/ Vmax
6.3 / 937.2mb/122.2kt


Final T# Adj T# Raw T#
6.3 6.7 6.7

Estimated radius of max. wind based on IR :N/A km

Center Temp : +15.2C Cloud Region Temp : -74.5C

Scene Type : EYE

Subtropical Adjustment : OFF

Extratropical Adjustment : OFF

Positioning Method : ARCHER POSITIONING

Ocean Basin : WEST PACIFIC
Dvorak CI > MSLP Conversion Used : CKZ Method

Tno/CI Rules : Constraint Limits : NO LIMIT
Weakening Flag : OFF
Rapid Dissipation Flag : OFF

C/K/Z MSLP Estimate Inputs :
- Average 34 knot radii : 117nmi
- Environmental MSLP : 1008mb

Satellite Name : HIM-9
Satellite Viewing Angle : 31.2 degrees

[cycloneye]

Wow. Taiwan will get a lot of rain and wind.

[Hurricane2022]

[1900hurricane]

Anyone have obs from Basco?

[doomhaMwx]

The southern portions of the Batanes Islands are now in the eye. At 00Z, PAGASA Basco station recorded an MSLP of 959.3 mb with sustained winds of 144 kph (78 kts) gusting to 180 kph (97 kts) in the eyewall!




Update: MSLP at Basco station further dropped to 952.6 mb at 01Z.

[doomhaMwx]

Interestingly, pressure at Basco has continued to decrease despite Krathon's eye now moving away. At 03Z, a 947 mb MSLP was recorded near the edge of the eye/eyewall (and still decreasing at that time as per the synop report) — indicating that the typhoon continues to intensify!

[Hayabusa]

Up to 125 kts

20W KRATHON 240930 1200 20.5N 120.5E WPAC 125 932

[ElectricStorm]

Eye is struggling to clear so far but other than that it looks pretty good. Hope it's not too destructive for Taiwan

[Hayabusa]

2024SEP30 170000 6.6 927.3 129.6 6.6 7.0 7.0 NO LIMIT OFF OFF OFF OFF 7.74 -76.99 EYE -99 IR 60.0 20.44 -120.11 ARCHER HIM-9 33.4

[ElectricStorm]

20W KRATHON 240930 1800 20.6N 120.0E WPAC 130 927

[underthwx]

Eye is struggling to clear so far but other than that it looks pretty good. Hope it's not too destructive for Taiwan

I echo that....will the typhoon track directly over the length of Taiwan?...

[cycloneye]

 https://x.com/EarthUncutTV/status/1840863297161347275

[Hayabusa]

Up to 135 - 140???, sidenote MET is 7.5 the T number that is rarely used

TPPN13 PGTW 302359

A. SUPER TYPHOON 20W (KRATHON)

B. 30/2340Z

C. 20.59N

D. 119.66E

E. ONE/GK2A

F. T7.0/7.0/D1.0/24HRS STT: S0.0/03HRS

G. IR/EIR/VIS/MSI

H. REMARKS: 03A/PBO EYE/ANMTN. WMG EYE SURROUNDED BY W YIELDS AN E#
OF 6.0. ADDED 1.0 EYE ADJUSTMENT FOR W, TO YIELD A DT OF 7.0. MET
YIELDS 7.5. PT YIELDS 7.0. DBO DT

I. ADDITIONAL POSITIONS: NONE


FLEWALLEN

[Hayabusa]

Holy cow, Basco reported 728 mm rainfall for the past 24 hrs

[Hayabusa]

Holy cow, Basco reported 728 mm rainfall for the past 24 hrs
https://i.imgur.com/R7aCWAQ.png

This is what made it a record... yesterday the 09/30/06z synop report, Basco reported a 659 mm of rainfall in just 6 hrs

[Hayabusa]

JMA 00z down 915 mb

T2418(Krathon)
Issued at 2024/10/01 01:05 UTC
Analysis at 10/01 00 UTC
Grade TY
Scale Large
Intensity Violent
Center position N20°35′ (20.6°)
E119°35′ (119.6°)
Direction and speed of movement WNW Slow
Central pressure 915 hPa
Maximum sustained wind speed near center 55 m/s (105 kt)
Maximum wind gust speed 75 m/s (150 kt)
Radius of 50-kt wind area 150 km (80 NM)
Radius of 30-kt wind area 500 km (270 NM)

[mrbagyo]

CMA is currently at 60 mps / 920 hpa
another wind force 17 typhoon