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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 0520UTC 69 kts 974 hPa
Scene CI# FT# AdjT# RawT# Eye T Cloud T
CRVBND 4.2 3.8 3.5 2.1 -20.80C -42.12C
AiDT
Date Time Vmax  
08Apr2026 0520UTC 64 kts  
 
DPRINT
Date Time Vmax MSLP
08Apr2026 0520UTC 75 kts 980 hPa
Vmax 25% Vmax 75%    
69 kts 82 kts    
DMINT
Date Time Vmax MSLP
08Apr2026 0441UTC 78 kts 974 hPa
Vmax 25% Vmax 75% MW Instr.  
72 kts 85 kts SSMISF18  
Date Time Vmax MSLP
08Apr2026 0237UTC 82 kts 964 hPa
Vmax 25% Vmax 75% MW Instr.  
76 kts 88 kts ATMS-N21  
08Apr2026 0442UTC -23.15S 177.65E
Satellite Sensor Eye Diameter Eye Cert %
SSMIS-18 85-92GHz 2.10 deg 31.5%

TC Structure MPERC
Date Time Prob. ERC onset
Full Model		 Prob. ERC onset
V-based
08Apr2026 0400UTC 24% 4%
 
MIMIC-TPW
 
MIMIC-TC
 
Shear Analysis
Date Time Shear Magnitude
 Shear Direction
08Apr2026 000UTC 27 kts 297 deg
Deep-layer vertical wind shear interpolated to storm center derived from the CIMSS AMV-aided analyses with vortex removed
TC-Scale AMVs