CHUGINADAK ISLAND, ALASKA (BNO NEWS) – Alaska's Cleveland Volcano briefly erupted on Friday evening, according to volcanologist on Saturday, but no one was thought to be at risk. Friday's eruption was described as being brief and started at around 11.30 p.m. local time (0730 UTC). According to the Alaska Volcano Observatory (AVO), satellite data indicated that the Cleveland volcano was producing an ash cloud to maximum altitudes of 15,000' to 20,000' (4.5 to 6.1 kilometers). In response to the eruption, the center raised the aviation color code to Orange and the volcano alert level to "Watch." "The lack of a real-time seismic network at Cleveland means that AVO is unable to track local earthquake activity related to volcanic unrest," a statement from the agency said. "Short-lived explosions with ash plumes that could exceed 20,000 ft above sea level can occur without warning and may go undetected on satellite imagery."