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Cooperative Institute for Meteorological Satellite Studies / University of Wisconsin-Madison
Tropical Cyclone 04W (Sinlaku)
Archived 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
12Apr2026 1800UTC 164 kts 888 hPa
Scene CI# FT# AdjT# RawT# Eye T Cloud T
EYE 7.8 7.7 7.7 7.7 20.11C -79.99C
AiDT
Date Time Vmax  
12Apr2026 1800UTC 160 kts  
 
DPRINT
Date Time Vmax MSLP
12Apr2026 1800UTC 161 kts 914 hPa
Vmax 25% Vmax 75%    
154 kts 168 kts    
DMINT
Date Time Vmax MSLP
12Apr2026 1812UTC 165 kts 914 hPa
Vmax 25% Vmax 75% MW Instr.  
157 kts 171 kts SSMISF18  
Date Time Vmax MSLP
12Apr2026 1547UTC 149 kts 915 hPa
Vmax 25% Vmax 75% MW Instr.  
143 kts 155 kts ATMS-N21  
12Apr2026 1814UTC 11.74N 149.43E
Satellite Sensor Eye Diameter Eye Cert %
SSMIS-18 85-92GHz 0.20 deg 100.0%

TC Structure MPERC
Date Time Prob. ERC onset
Full Model		 Prob. ERC onset
V-based
12Apr2026 1800UTC 97% 70%
 
MIMIC-TPW
 
MIMIC-TC
 
Shear Analysis
Date Time Shear Magnitude
 Shear Direction
12Apr2026 1800UTC 13 kts 112 deg
Deep-layer vertical wind shear interpolated to storm center derived from the CIMSS AMV-aided analyses with vortex removed
TC-Scale AMVs