ufo came from thu8nderstorm

My brother and I traveled to Hobbs, N.M. from Lovington,N.M. after a line thunderstorm had passed through. When we got to our aunt's house ,it was early evening and the storms were producing a lot of beautiful lightining over Seminole,Tx,approximatly 30 mile to the east. I saw what I thought was an aircraft landing light coming from the direction of the storm.I commented to my brother how fast it seemed to be moving, I said "this is going to be loud" because it seemed to be moving at a high sub-sonic speed. It passed about 3/4 of a mile to our south with no sound. at our south it appeared to be triangle shaped( a red light on the "nose" and a green light on the tail)I still thought it was an aircraft until it passed another 20 degrees to the west. at that time it appeared that the back was a triangle but there were three lighits that followed eachother around the outside of the triangle. it quickly dis appeared beyond the roofs of the houses.
Date is approximate.  NUFORC has received many reports that place UFO's either in, or in proximity to, storms and storm clouds.  PD