...A Flash Flood Watch is in effect from 4 AM Sunday through 7 AM Monday for all of East Texas, Southeast Oklahoma, much of Southwest Arkansas and Northwest Louisiana...Timing and Overview:
Showers and thunderstorms are expected to increase Sunday morning over extreme Southeast Oklahoma and East Texas, before spreading east northeast into Southwest Arkansas and North Louisiana Sunday afternoon ahead of an upper level disturbance that will enter West Texas. Even though this disturbance and the accompanying showers and thunderstorms will be progressive across the area Sunday/Sunday night, locally heavy rainfall will be possible atop already saturated grounds. This will result in increased runoff and the potential for flash flooding across much of the Watch area. It is possible that Union County Arkansas and the remainder of Northcentral Louisiana could be included in the watch later today or tonight should forecast rainfall amounts increase over these areas. 

Isolated severe thunderstorms can not be ruled out either Sunday for the Watch area...with damaging winds possible. However, please note that even gusty winds from non-severe thunderstorms may still down trees given the very saturated grounds from heavy rainfall that has fallen over the last couple of weeks. 

There will be another upper level disturbance moving into the region Monday night, which will yield another isolated severe thunderstorm threat, although the main emphasis will again be for heavy rainfall and flash flooding. Thus, the Flash Flood Watch will likely be extended in time for portions if not all of the region by Monday. This will be communicated with you in future emails.   
 

Four State Impacts:

Rainfall:  Widespread rainfall amounts of one to three inches...with isolated higher amounts will be possible through early Monday morning.  Tom JohnsonKTXSANAU6