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Tropical Storm Linda Discussion Number  40
NWS Central Pacific Hurricane Center Honolulu HI   EP122021
500 PM HST Thu Aug 19 2021
 
Linda continues to slowly weaken as evident by the lack of deep 
convection associated with the system. A well defined low and mid 
level cloud swirl is all that remains. The latest subjective Dvorak 
estimates suggest that the cyclone's initial intensity has decreased 
to around 40 kt.

Cooler SSTs and a drier and more stable air mass out ahead of the 
system should prevent any significant deep convection from returning 
over the next couple of days. Therefore, Linda could be declared a 
post-tropical low sometime tonight. The low will reach warmer waters 
in a couple of days but strong southwesterly shear should inhibit 
regeneration of the cyclone, and the low should open up into a 
trough early next week. The latest CPHC intensity forecast remains 
near the HCCA and IVCN consensus.

Over the past several hours, Linda has been moving slightly north 
of due west at around 15 kt. Linda will continue to be steered by 
a low-mid level ridge to its north. Thus a general westward motion 
is expected for the system until it dissipates in about 5 days. 
The latest CPHC track forecast is little changed from the previous 
one, and is within the tightly packed track guidance. 


FORECAST POSITIONS AND MAX WINDS
 
INIT  20/0300Z 19.9N 141.1W   40 KT  45 MPH
 12H  20/1200Z 20.2N 143.4W   35 KT  40 MPH...POST-TROPICAL
 24H  21/0000Z 20.5N 146.2W   30 KT  35 MPH...POST-TROP/REMNT LOW
 36H  21/1200Z 20.9N 148.4W   30 KT  35 MPH...POST-TROP/REMNT LOW
 48H  22/0000Z 21.2N 150.8W   30 KT  35 MPH...POST-TROP/REMNT LOW
 60H  22/1200Z 21.5N 153.1W   30 KT  35 MPH...POST-TROP/REMNT LOW
 72H  23/0000Z 21.8N 155.4W   30 KT  35 MPH...POST-TROP/REMNT LOW
 96H  24/0000Z 22.2N 160.2W   25 KT  30 MPH...POST-TROP/REMNT LOW
120H  25/0000Z...DISSIPATED
 
$$
Forecaster Burke
 
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