From the National Weather Service:

This Hazardous Weather Outlook is for portions of central Louisiana, south central Louisiana, southwest Louisiana, west central Louisiana, and southeast Texas. .DAY ONE...Today and Tonight A cool front is moving through southern Louisiana this morning and looks to move into the gulf. Scattered showers and thunderstorms on tap for today and tonight. Storms today will produce cloud to ground lightning and gusty winds. .DAYS TWO THROUGH SEVEN...Friday through Wednesday Tropical Storm Harvey is expected to move to the northwest and into the middle Texas coast by Saturday morning. Harvey is expected to strengthen into a hurricane on Friday prior to landfall. Looking for showers and thunderstorms over the weekend and into next week as this will be a prolong event. An upper level ridge will block Harvey from moving deeper into Texas. By Monday Harvey will push the front to the northeast... this will allow area coverage of storms to increase through the beginning of next week. Rainfall totals at this time are expected to range from five to eight inches.