Hot temperatures were the cause of an early wake up call for residents of Clarinda early Tuesday morning.

Emergency sirens in Clarinda accidently sounded for about five minutes at about 3:00 AM Tuesday morning.

Officials in Clarinda say the sirens went off due to atmospheric conditions and their effects on wireless technology. The heat caused radio frequencies to skip hundreds of miles across the atmosphere. Those skips usually occur during prolonged periods of warm temperatures.