This is one of the wettest rainfall amount forecasts for the central United States that I have seen in 50+ years of looking at this. That is a forecast of more than 7 inches of rain along I-35 from Madill, OK to the DFW Metroplex! There are multiple areas where more than 4" inches of rain is forecast to fall. Please pay attention to the forecasts this week!   Updated flash flood forecasts. The first is from 7pm this evening to 7pm Monday. The red area has a serious risk of flash flooding.  The serious risk moves east from 7pm Monday to 7pm Tuesday. It is vital  that travelers and residents monitor the weather in these areas, including those on Interstate highways that some unfortunately believe "never flood." Make sure you have a "Go Kit" ready if you live in a flood prone or low-lying area. 

However, the storm is forecast to reach tropical storm force ("S") before it crosses the coast. It will weaken back to a tropical depression ("D") before it reaches Dallas.  The small pink area is where a hurricane watch is in effect. The blue = tropical storm warning. Here is a forecast of rainfall amounts. Fortunately, the heaviest rain is forecast to miss the Hill Country where so much flood suffering has occurred the past 18 months. 

Heavy to excessive rain forecast from Colorado/Nebraska to the Appalachians this week. The rain is neededed in the western part of the area but the forecast 3 to 5 inches east of the Mississippi may lead to flooding.