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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
20Apr2026 0520UTC 25 kts 988 hPa
Scene CI# FT# AdjT# RawT# Eye T Cloud T
SHEAR 1.5 1.5 1.5 1.5 15.69C 13.08C
AiDT
Date Time Vmax  
20Apr2026 0520UTC 33 kts  
 
DPRINT
Date Time Vmax MSLP
20Apr2026 0520UTC 28 kts 1003 hPa
Vmax 25% Vmax 75%    
25 kts 31 kts    
DMINT
Date Time Vmax MSLP
20Apr2026 0528UTC 33 kts 1002 hPa
Vmax 25% Vmax 75% MW Instr.  
29 kts 37 kts SSMISF18  
Date Time Vmax MSLP
20Apr2026 0319UTC 28 kts 1000 hPa
Vmax 25% Vmax 75% MW Instr.  
26 kts 32 kts ATMS-N20  
18Apr2026 1536UTC 24.59N 147.37E
Satellite Sensor Eye Diameter Eye Cert %
AMSR2 37GHz 2.10 deg ---%

TC Structure MPERC
Date Time Prob. ERC onset
Full Model		 Prob. ERC onset
V-based
20Apr2026 0500UTC 0% 0%
 
MIMIC-TPW
 
MIMIC-TC
 
Shear Analysis
Date Time Shear Magnitude
 Shear Direction
20Apr2026 000UTC 30 kts 290 deg
Deep-layer vertical wind shear interpolated to storm center derived from the CIMSS AMV-aided analyses with vortex removed
TC-Scale AMVs