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Tropical Depression One-E Discussion Number 1
NWS National Hurricane Center Miami FL EP012024
900 AM CST Thu Jul 04 2024
Showers and thunderstorms have become better organized over the past
12-18 hours in association with the small area of low pressure that
NHC has been monitoring for the past several days. There have been
no recent scatterometer or passive microwave passes to assess the
low-level circulation of the system. However, the persistence of the
convection and the current satellite structure suggest a
well-defined surface circulation has likely formed underneath the
colder cloud tops. It is determined that the first tropical
depression of the eastern Pacific season has formed. The initial
intensity is set at 30 kt based on a T2.0 subjective Dvorak
classification from TAFB.
The center position of the depression is uncertain based on the lack
of data, but the initial estimated motion is northwest (325/8 kt).
The models agree that this motion will continue into tonight,
followed by a westward turn on Friday within the low-level flow.
With warm SSTs and relatively low shear today, it is possible that
the system could briefly strengthen into a tropical storm, though
not explicitly forecast. The tropical cyclone will move across the
26C isotherm during the next 24-36 h, and the cooler waters and
drier mid-level environment thereafter should induce a weakening
trend. In fact, the GFS and ECMWF model-simulated satellite imagery
suggest convection is likely to collapse on Friday, and the system
is forecast to become a remnant low by Friday night and dissipate
later this weekend.
FORECAST POSITIONS AND MAX WINDS
INIT 04/1500Z 17.0N 105.9W 30 KT 35 MPH
12H 05/0000Z 17.7N 107.0W 30 KT 35 MPH
24H 05/1200Z 17.8N 108.6W 25 KT 30 MPH
36H 06/0000Z 17.5N 109.9W 25 KT 30 MPH...POST-TROP/REMNT LOW
48H 06/1200Z 17.0N 111.5W 20 KT 25 MPH...POST-TROP/REMNT LOW
60H 07/0000Z...DISSIPATED
$$
Forecaster Reinhart
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