UPDATE: Huracán en Camino

I think that Rob is referring to the low pressure area that is near the Isthmus of Tehuantepec, is headed north, and has a high likelihood of becoming a tropical storm and possibly a hurricane.

If you look on the NOAA website, it is the amber-coloured X in the bottom right corner.

https://www.nhc.noaa.gov/?epac

“An area of low pressure is centered about 250 miles southwest of the Gulf of Tehuantepec. Shower and thunderstorm activity is showing signs of becoming better organized. Environmental conditions are expected to be conducive for gradual development during the next several days, and a tropical depression is likely to form late this weekend or early next week. The disturbance is forecast to move slowly west-northwestward for the next two days, and then turn northward and move closer to the southern coast of Mexico on Sunday and Monday.

Regardless of development, this system could produce heavy rainfall along portions of the coast of southwestern Mexico through early next week and interests in this area should monitor the disturbance's progress.

* Formation chance through 48 hours...medium...60 percent.
* Formation chance through 7 days...high...80 percent.”