Impact flash in brazoria county texas

I was driving home from work after a night shift, taking my normal route of beltway 8 to hwy 288 south from Pasadena Texas to home in Richwood Texas, as I was headed southbound on hwy 288 I noticed a flash that covered approximately 90 degrees of the spectrum in front of me.  I would akin this to look like an impact flash.  
It was drizzling that morning and there was rain in the area but there wasn't any lightning at all and there wasn't any thunder after this flash or at all this morning.  I have seen lightning before with no thunder but this was not that.  If I were gonna make an educated guess this looked liked something had entered earth's atmosphere and impacted but again there was no sound. 
Also the flash was yellowish in color not like your usual white lightning which also led me to conclude this was not lightning.  I know others had to have seen I t but traffic continued as normal but left me wondering what it could have been.