Rock County Expands Siren Alerts for Severe Thunderstorms

JANESVILLE, Wis. (WKOW) — Rock County Emergency Management announced on Thursday a significant update to its outdoor warning systems. The county will now activate its outdoor warning sirens for certain severe thunderstorm warnings, in addition to tornado warnings.

The new policy stipulates that the sirens will sound when the National Weather Service (NWS) issues a Severe Thunderstorm Warning with a ‘destructive’ tag. This designation applies to storms capable of producing hail of at least 2.75 inches in diameter, equivalent to baseball size, or winds exceeding 80 mph.

‘Our goal is to ensure the safety of residents,’ said Kevin Wernet, Director of Rock County Emergency Management. ‘By aligning our siren alerts with NWS protocols, we hope to keep everyone informed and safe during severe weather events.’

This change comes in response to the increasing frequency and severity of extreme weather, especially after a recent hailstorm impacted Evansville. The storm caused extensive property damage, highlighting the need for an enhanced alert system.

Residents are urged to take all severe weather warnings seriously, and to seek shelter immediately when they hear the sirens. Emergency Management has advised that people should monitor local news or NOAA Weather Radio for the latest updates on storm severity.

Rock County currently operates 40 sirens, primarily located in populated areas. Wernet noted that although the system is designed to alert those outside, it may not be heard indoors, which emphasizes the importance of having multiple alert systems in place.

He also encouraged residents living in rural areas without sirens to stay informed using weather radios or smartphone alerts. ‘Investing in these technologies can make a vital difference during a storm,’ Wernet added.

As severe weather is common in Wisconsin from March to November, the newly implemented policy emphasizes the need for vigilance and preparedness. Rock County is committed to enhancing public safety measures in collaboration with the NWS.