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Post-Tropical Cyclone Fausto Discussion Number  43
NWS Central Pacific Hurricane Center Honolulu HI   EP062026
Issued by NWS National Hurricane Center Miami FL
500 AM HST Wed Jul 29 2026
 
It has been 18-21 h since Fausto produced convection that met the 
criteria of the Dvorak Technique for tropical cyclone intensity 
estimates, with just a few patches of convection occurring well to 
the east and northeast of the center. Also, scatterometer data 
received after the last advisory suggested the circulation is losing 
definition. The cyclone is in an environment of 40-45 kt of westerly 
vertical shear and a dry mid-level airmass, and thus significant 
convective re-development appears unlikely. Based on these 
developments, Fausto is being downgraded to a remnant low pressure 
area.
 
Fausto continues west-northwestward with an initial motion of 290/11 
kt. This general motion should continue until the system dissipates, 
as the shallow circulation is steered mainly by the tradewind flow 
south of the subtropical ridge. The forecast track keeps the 
remnants well to the north of the Hawaiian Islands.

The dynamical models forecast the remnant low to persist for another 
36 h or so, and after that it should degenerate to a open trough. 
This is reflected in the intensity forecast.

This is the last advisory on Fausto. For additional information on 
the remnant low please see High Seas Forecasts issued by the 
National Weather Service, under AWIPS header NFDHSFEPI, WMO header 
FZPN02 KWBC, and on the web at ocean.weather.gov/shtml/NFDHSFEPI.php

 
Key Messages:
 
1. Surf generated by Fausto is building westward across the Hawaiian 
Islands along exposed east-facing shores and will remain dangerous 
today as Fausto passes north of the islands.  Large surf and strong 
currents will lead to dangerous conditions along exposed shores.  
Please consult products from your local weather office.
 
 
FORECAST POSITIONS AND MAX WINDS
 
INIT  29/1500Z 23.8N 155.6W   30 KT  35 MPH...POST-TROP/REMNT LOW
 12H  30/0000Z 24.1N 157.4W   25 KT  30 MPH...POST-TROP/REMNT LOW
 24H  30/1200Z 24.6N 160.0W   25 KT  30 MPH...POST-TROP/REMNT LOW
 36H  31/0000Z 25.3N 162.5W   20 KT  25 MPH...POST-TROP/REMNT LOW
 48H  31/1200Z...DISSIPATED
 
$$
Forecaster Beven
 
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