Severe weather is possible in Johnson County throughout the year. This hazardous weather can put people’s safety at risk and causing damage to property. Johnson County may experience severe weather at any time of the year, including:
- Strong winds
As severe weather approaches, follow updates from the National Weather Service, trusted local news outlets and public safety officials. Notify JoCo is also a crucial source of information, a free mass notification system sending text alerts to Johnson County residents in cases of emergencies – including severe weather events.
Severe weather is possible in all four seasons in Johnson County, but the spring sees the highest possibility of tornadoes in the county. In addition to tornadoes, these severe storms can often bring damaging straightline winds, large hail and flash flooding.
In Johnson County, the outdoor warning sirens are owned and maintained by the local jurisdictions. However, Johnson County Emergency Management has the primary responsibility of activating those sirens. The sirens are only activated for a tornado warning. If you hear these sirens, take shelter immediately and look for additional information. These sirens are tested on the first Wednesday of each month at 11 a.m.