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Cooperative Institute for Meteorological Satellite Studies / University of Wisconsin-Madison
Tropical Cyclone 31P (Vaianu)
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
08Apr2026 1800UTC 35 kts 992 hPa
Scene CI# FT# AdjT# RawT# Eye T Cloud T
SHEAR 2.5 2.0 1.8 1.5 16.56C 3.91C
AiDT
Date Time Vmax  
08Apr2026 1800UTC 43 kts  
 
DPRINT
Date Time Vmax MSLP
08Apr2026 1800UTC 40 kts 999 hPa
Vmax 25% Vmax 75%    
35 kts 46 kts    
DMINT
Date Time Vmax MSLP
08Apr2026 1556UTC 50 kts 991 hPa
Vmax 25% Vmax 75% MW Instr.  
45 kts 56 kts SSMISF18  
Date Time Vmax MSLP
08Apr2026 1351UTC 47 kts 984 hPa
Vmax 25% Vmax 75% MW Instr.  
42 kts 52 kts ATMS-N21  
08Apr2026 1558UTC -24.83S 178.32E
Satellite Sensor Eye Diameter Eye Cert %
SSMIS-18 85-92GHz 2.40 deg 3.9%

TC Structure MPERC
Date Time Prob. ERC onset
Full Model		 Prob. ERC onset
V-based
08Apr2026 1500UTC 21% 3%
 
MIMIC-TPW
 
MIMIC-TC
 
Shear Analysis
Date Time Shear Magnitude
 Shear Direction
08Apr2026 1200UTC 29 kts 305 deg
Deep-layer vertical wind shear interpolated to storm center derived from the CIMSS AMV-aided analyses with vortex removed
TC-Scale AMVs