From that low on Tuesday, I may get as much as 3 in. of rain. We'll see.
That low is a remnant weak tropical wave that came in around Galveston and is drifting north. It brought a lot of rain to the Houston area, much of the middle and lower TX coast, and parts of south central and central TX on north. In some locations west and north of San Antonio it has dropped almost 7" of precip in spots (more with similar rains Sun/Mon). I haven't had a drop.
It's the 1009mb low shown south of Dallas in the Unisys WX enhanced sfc/sat/radar image below (sry about that image, my Irfan is acting up I guess, tried to crop it twice):
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