Forecasters Track Pacific Storm Threat for Southern Plains Rain

A developing tropical disturbance in the eastern Pacific could bring significant moisture to western Mexico and parts of the southern United States next week, according to AccuWeather. Forecasters identify Oct. 21-23 as a period of high risk for tropical development southwest of Mexico, where environmental conditions may support the formation of a tropical system.

The system's eventual path will determine whether western Mexico experiences direct impacts or the disturbance remains offshore. AccuWeather hurricane experts are also monitoring the possibility that moisture from the system could travel north into the U.S. southern Plains, although the timing, location, and amount of rainfall remain uncertain.

AccuWeather Lead Hurricane Expert Alex DaSilva emphasized the importance of monitoring the disturbance as it develops over the eastern Pacific.

"Residents and businesses across western Mexico should closely monitor the progress of this developing system. The exact track of the system will play an important role in determining whether it brings impacts to western Mexico or remains offshore," said AccuWeather Lead Hurricane Expert Alex DaSilva.

The developing threat follows a period of frequent tropical activity in the eastern Pacific. Recent storms tracked in the region include Polo, Simon, Rachel, and Trudy, with some systems developing in close succession and others occurring simultaneously.

This pattern has kept attention focused on tropical disturbances near Mexico's Pacific coastline. According to AccuWeather's forecast, a storm's potential influence could extend beyond its center, allowing moisture to move inland even if the main circulation stays offshore.

For the southern Plains, the principal concern is the possible arrival of residual tropical moisture next week. The amount and distribution of rainfall will depend on how the disturbance organizes and where it moves during the coming days, AccuWeather reported.

Even if the system remains well south of the U.S. border, its associated atmospheric moisture could contribute to downpours farther north. Forecasters have not established the precise areas that could receive rain or the expected rainfall totals.

AccuWeather is also tracking a separate area of potential tropical development southwest of Hawaii from Oct. 24-27. The risk in that region is considered low, and current projections suggest that any system forming there would move away from the Hawaiian Islands.

Although the projected path indicates a limited threat of direct impacts to Hawaii, forecasters continue to monitor the disturbance for changes in organization or movement that could alter its potential track.