Geographically, this is a historical upper tier event for an EPAC remnant trigger, with heavy rain corridors stretching from Arizona to Wisconsin. The belt through Texas could see widespread 4-8 in totals, with locally higher accumulations of ~10 in specifically.

We are about to see one of the largest rain events that’s ever been triggered in the continental United States by a Pacific Hurricane. After making landfall in Baja California, the saturated remnants of former-Category 5 Hurricane Polo are going to inject a massive conveyor belt of deep, tropical moisture up through NW Mexico and into the U.S. South-Central Texas could be at the epicenter of the event, with isolated rain totals potentially reaching up to a FOOT this week.