mountainous terrain in mexico, but major flooding which derailed that train in navarro county, texas, remains a threat to millions of americans. that is because heavy rain from the tropical depression that was patricia continues to fall. 24 hours ago you were hearing about patricia being the most powerful category 5 storm ever recorded in the western hemisphere, but it weakened just as it made landfall last night in northwestern mexico. mexico's president says there are no reports of major damage there, but in navarro county, texas, disaster officials are worried about even more flooding. that's where we find ed lavandera with more details. ed? >> reporter: the rainfall continues here in texas and the rainfall totals are simply staggering. we are near the town of corsicana, where over the course of the last day and a half we've seen nearly 20 inches of rain fall here in this area, and that is why this is really been one of the more harder hit areas. this is a wide open field. there should not be water here,