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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
11Apr2026 2000UTC 90 kts 963 hPa
Scene CI# FT# AdjT# RawT# Eye T Cloud T
UNIFRM 5.0 5.0 5.0 4.4 -74.18C -81.19C
AiDT
Date Time Vmax  
11Apr2026 2000UTC 89 kts  
 
DPRINT
Date Time Vmax MSLP
11Apr2026 2000UTC 103 kts 952 hPa
Vmax 25% Vmax 75%    
95 kts 111 kts    
DMINT
Date Time Vmax MSLP
11Apr2026 1828UTC 93 kts 951 hPa
Vmax 25% Vmax 75% MW Instr.  
86 kts 101 kts SSMISF18  
Date Time Vmax MSLP
11Apr2026 1607UTC 87 kts 971 hPa
Vmax 25% Vmax 75% MW Instr.  
80 kts 94 kts ATMS-N21   49.9% 39.6% 45.0% 12.6% 8.5%

Position Estimates ARCHER
Date Time Latitude Longitude
11Apr2026 1828UTC 9.28N 151.29E
Satellite Sensor Eye Diameter Eye Cert %
SSMIS-18 85-92GHz 0.30 deg 100.0%

TC Structure MPERC
Date Time Prob. ERC onset
Full Model		 Prob. ERC onset
V-based
11Apr2026 1800UTC 4% 15%
 
MIMIC-TPW
 
MIMIC-TC
 
Shear Analysis
Date Time Shear Magnitude
 Shear Direction
11Apr2026 1800UTC 16 kts 109 deg
Deep-layer vertical wind shear interpolated to storm center derived from the CIMSS AMV-aided analyses with vortex removed
TC-Scale AMVs