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Cooperative Institute for Meteorological Satellite Studies / University of Wisconsin-Madison
Tropical Cyclone 27P (Narelle)
Latest Real-Time 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
21Mar2026 1300UTC 79 kts 973 hPa
Scene CI# FT# AdjT# RawT# Eye T Cloud T
UNIFRM 4.6 4.6 4.6 4.0 -72.60C -82.62C
AiDT
Date Time Vmax  
21Mar2026 1300UTC 79 kts  
 
DPRINT
Date Time Vmax MSLP
21Mar2026 1300UTC 78 kts 965 hPa
Vmax 25% Vmax 75%    
70 kts 86 kts    
DMINT
Date Time Vmax MSLP
21Mar2026 0720UTC 61 kts 981 hPa
Vmax 25% Vmax 75% MW Instr.  
54 kts 67 kts SSMISF18  
MW Sounders
Date Time Vmax MSLP
21Mar2026 0500UTC 48 kts 982 hPa
  Satellite FOV  
  NOAA-21 90  
SATCON
Date Time Vmax MSLP
21Mar2026 0700UTC 61 kts 982 hPa
Consensus Members
2 (ADT+Sounders)

RI Forecast AI-RI
Date Time Current Vmax Current MPI
21Mar2026 0600UTC 80 kts 9999 kts
20kt/12h 25kt/24h 30kt/24h 35kt/24h 40kt/24h 45kt/36h 55kt/48h 65kt/72h
15.5% 38.1% 42.2% 38.6% 18.4% 24.9% 13.5% 4.7%

Position Estimates ARCHER
Date Time Latitude Longitude
21Mar2026 1127UTC -13.18S 137.22E
Satellite Sensor Eye Diameter Eye Cert %
Metop-A ASCAT --- deg ---%

TC Structure MPERC
Date Time Prob. ERC onset
Full Model		 Prob. ERC onset
V-based
21Mar2026 0700UTC 11% 22%
 
MIMIC-TPW
 
MIMIC-TC
 
Shear Analysis
Date Time Shear Magnitude
 Shear Direction
21Mar2026 1200UTC 20 kts 90 deg
Deep-layer vertical wind shear interpolated to storm center derived from the CIMSS AMV-aided analyses with vortex removed
TC-Scale AMVs