Green Triangular formation over Reno, NV

A storm was moving in, my girlfriend and I went outside to my driveway to see if it would rain. We waited for the storm to pick up a bit, and started looking for stars in the horizon where there was little to no cloud cover. Directly above us we could see, obscured by the clouds, a faint patch of green light. We watched the spot continuously for about 5 minutes, as the clouds thinned some, we could make out three distinct points on light on each vertex of the triangle. I went inside to get my camera. I snapped an early picture, but it was mostly out of frame. The clouds became too thick and we went inside. We both felt markedly unsettled. An hour later I went outside and the green triangular light was still there. I set up my camera more properly and took 2, 30 second exposures of the light. It is clearly in the field of view. Some stars are visible in the background.