Skip Navigation Links
NOAA NOAA United States Department of Commerce

Tropical Depression ONE-E


Tropical Depression One-E Discussion Number   1
NWS National Hurricane Center Miami FL       EP012020
800 AM PDT Sat Apr 25 2020

Overnight ASCAT data showed the disturbance over the central eastern
Pacific basin has developed a well-defined center.  Furthermore,
convection associated with the low has increased in organization
since yesterday.  Advisories have therefore been initiated on
Tropical Depression One-E.  The initial intensity is set at 30 kt
based primarily on the aforementioned ASCAT data.  This marks
the earliest formation of a tropical cyclone in the eastern North
Pacific basin since the satellite era began in 1966.

The depression is not expected to stick around for long.  Dry air in
the surrounding environment appears to have already wrapped around
much of the cyclone's circulation, and this is likely limiting its
associated convection.  This should also prevent the depression from
strengthening much during the next 24 h, but it can not be ruled out
that the system could briefly become a tropical storm later today.
On Sunday, an increase in vertical wind shear and lower SSTs along
the forecast track will contribute to the depression's demise, and
it is expected to become a remnant low within about 36 h, if not

The initial motion estimate is northwest at 6 kt.  The depression
should continue on a general northwestward heading for another day
or so until it becomes a remnant low.  The remnants should then turn
westward with the low-level trade wind flow until it dissipates
entirely in a couple of days.


INIT  25/1500Z 14.1N 116.1W   30 KT  35 MPH
 12H  26/0000Z 14.9N 116.8W   30 KT  35 MPH
 24H  26/1200Z 15.9N 118.1W   30 KT  35 MPH
 36H  27/0000Z 16.7N 119.8W   25 KT  30 MPH...POST-TROP/REMNT LOW
 48H  27/1200Z 17.1N 121.7W   25 KT  30 MPH...POST-TROP/REMNT LOW
 72H  28/1200Z...DISSIPATED

Forecaster Zelinsky