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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
18Apr2026 0800UTC 37 kts 990 hPa
Scene CI# FT# AdjT# RawT# Eye T Cloud T
SHEAR 2.6 2.5 2.3 2.3 13.59C -6.62C
AiDT
Date Time Vmax  
18Apr2026 0800UTC 39 kts  
 
DPRINT
Date Time Vmax MSLP
18Apr2026 0800UTC 59 kts 983 hPa
Vmax 25% Vmax 75%    
53 kts 66 kts    
DMINT
Date Time Vmax MSLP
18Apr2026 0555UTC 66 kts 982 hPa
Vmax 25% Vmax 75% MW Instr.  
60 kts 74 kts SSMISF18  
Date Time Vmax MSLP
18Apr2026 0355UTC 60 kts 978 hPa
Vmax 25% Vmax 75% MW Instr.  
55 kts 65 kts ATMS-N20  
18Apr2026 0556UTC 23.09N 146.30E
Satellite Sensor Eye Diameter Eye Cert %
SSMIS-18 85-92GHz 2.50 deg 2.8%

TC Structure MPERC
Date Time Prob. ERC onset
Full Model		 Prob. ERC onset
V-based
18Apr2026 0500UTC 0% 0%
 
MIMIC-TPW
 
MIMIC-TC
 
Shear Analysis
Date Time Shear Magnitude
 Shear Direction
18Apr2026 600UTC 20 kts 282 deg
Deep-layer vertical wind shear interpolated to storm center derived from the CIMSS AMV-aided analyses with vortex removed
TC-Scale AMVs