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Tropical Storm Ivo Discussion Number  16
NWS National Hurricane Center Miami FL       EP092025
800 AM PDT Sun Aug 10 2025
 
Ivo is maintaining a small cluster of deep convection, near and to 
the south of the low-level center.  Dvorak CI numbers of 2.5 from 
TAFB and SAB and objective estimates from UW-CIMSS support holding 
the initial intensity at 35 kt for this advisory.  The cyclone is 
moving over cooler waters and in a more stable environment, 
while also contending with moderate northeasterly shear, and 
weakening is therefore forecast during the next couple of days.  
Ivo should lose all its convection and become a remnant low by 24 
hours, and global models show dissipation into a surface trough in 
60 hours.

The initial motion is a bit faster toward the west-northwest (290/9 
kt).  Low- to mid-level ridging to the north should keep Ivo on a 
westward to west-northwestward trajectory at a fairly steady speed 
during the next couple of days.  The NHC forecast is well within 
the tightly packed guidance envelope, and no significant changes 
were made from the previous forecast.
 
 
FORECAST POSITIONS AND MAX WINDS
 
INIT  10/1500Z 21.9N 116.1W   35 KT  40 MPH
 12H  11/0000Z 22.5N 117.5W   30 KT  35 MPH
 24H  11/1200Z 23.0N 119.6W   25 KT  30 MPH...POST-TROP/REMNT LOW
 36H  12/0000Z 23.2N 121.8W   20 KT  25 MPH...POST-TROP/REMNT LOW
 48H  12/1200Z 23.2N 124.2W   15 KT  15 MPH...POST-TROP/REMNT LOW
 60H  13/0000Z...DISSIPATED
 
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Forecaster Berg
 
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