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Cooperative Institute for Meteorological Satellite Studies / University of Wisconsin-Madison
Tropical Cyclone 26W (Choi-wan)
Latest Real-Time CIMSS Product Summary
Current Time :     		NHC/JTWC
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Product Latency Color Code : Less than 3 hours old   3 - 6 hours old   6 - 12 hours old   Greater than 12 hours old   Not Available
Current Intensity Estimates ADT
Date Time Vmax MSLP
06Oct2026 0540UTC 77 kts 958 hPa
Scene CI# FT# AdjT# RawT# Eye T Cloud T
UNIFRM 4.5 3.9 3.8 3.3 -67.04C -55.80C
AiDT-V2
Date Time Vmax  
06Oct2026 0540UTC 89 kts  
 
DPRINT
Date Time Vmax MSLP
06Oct2026 0510UTC 83 kts 966 hPa
Vmax 25% Vmax 75%    
77 kts 90 kts    
DMINT
Date Time Vmax MSLP
06Oct2026 0356UTC 81 kts 964 hPa
Vmax 25% Vmax 75% MW Instr.  
76 kts 87 kts ATMS-N20  
Date Time Vmax MSLP
06Oct2026 0259UTC 83 kts 963 hPa
Vmax 25% Vmax 75% MW Instr.  
78 kts 89 kts ATMS-N21  
Date Time Vmax MSLP
06Oct2026 0156UTC 86 kts 964 hPa
Vmax 25% Vmax 75% MW Instr.  
79 kts 92 kts AMSR3  
Date Time Vmax MSLP
06Oct2026 0035UTC 87 kts 956 hPa
Vmax 25% Vmax 75% MW Instr.  
81 kts 92 kts TMS06  
MW Sounders
Date Time Vmax MSLP
06Oct2026 0259UTC 106 kts 931 hPa
  Satellite FOV  
  NOAA-21 19  
SATCON
Date Time Vmax MSLP
06Oct2026 0510UTC 94 kts 940 hPa
Consensus Members
2 (ADT+Sounders)

RI Forecast AI-RI
Date Time Current Vmax Current MPI
05Oct2026 1800UTC 105 kts 113 kts
20kt/12h 25kt/24h 30kt/24h 35kt/24h 40kt/24h 45kt/36h 55kt/48h 65kt/72h
1.4% 1.3% 0.5% 0.0% 0.1% 0.0% 0.0% 0.0%

Position Estimates ARCHER
Date Time Latitude Longitude
06Oct2026 0543UTC 31.50N 146.34E
Satellite Sensor Eye Diameter Eye Cert %
SSMIS-18 89-92GHz 0.30 deg 95.7%

TC Structure MPERC
Date Time Prob. ERC onset
Full Model		 Prob. ERC onset
V-based
06Oct2026 0500UTC 12% 10%
 
MIMIC-TPW
 
MIMIC-TC
 
Shear Analysis
Date Time Shear Magnitude
 Shear Direction
06Oct2026 000UTC 5 kts 156 deg
Deep-layer vertical wind shear interpolated to storm center derived from the CIMSS AMV-aided analyses with vortex removed
TC-Scale AMVs