000 ABPZ20 KNHC 171143 TWOEP Tropical Weather Outlook NWS National Hurricane Center Miami FL 500 AM PDT Tue Oct 17 2023 For the eastern North Pacific...east of 140 degrees west longitude: South of Southwestern Mexico (EP90): Showers and thunderstorms associated with an area of low pressure located a few hundred miles offshore of the southwestern coast of Mexico are gradually becoming better organized, but the low still does not have a well-defined center. Environmental conditions are conducive for further development of this system, and a tropical depression is very likely to form later today or tonight. This system is expected to move slowly west-northwestward and then turn northwestward or northward late in the week offshore of the coast of southwestern Mexico. Additional information on this system, including gale warnings, can be found in High Seas Forecasts issued by the National Weather Service. * Formation chance through 48 hours...high...90 percent. * Formation chance through 7 days...high...90 percent. South of Guatemala and Southern Mexico: An area of low pressure is expected to form south of the coasts of Guatemala and southern Mexico in a couple of days. Gradual development of the disturbance is expected, and a tropical depression is likely to form late this week or over the weekend while the system meanders over the far eastern portion of the basin. * Formation chance through 48 hours...low...10 percent. * Formation chance through 7 days...high...70 percent. && High Seas Forecasts issued by the National Weather Service can be found under AWIPS header NFDHSFEPI, WMO header FZPN02 KWBC, and on the web at ocean.weather.gov/shtml/NFDHSFEPI.php $$ Forecaster Kelly