Dear Herons Glen Residents and Golf Members,
Many of you may have heard the siren blasts from our Thor Guard lightning prediction system this summer. We’d like to take a moment to explain how the system works and what those alerts mean for you.
Herons Glen Recreation District uses the Thor Guard system to detect and predict lightning by measuring static electricity and monitoring shifts in atmospheric conditions. It is designed to forecast lightning strikes within a 10-mile radius—Thor Guard’s recommended safety zone.
HOW IT WORKS
• Warning Alert: One continuous 15-second horn blast will sound, and strobe lights throughout the community will activate. This indicates that lightning is predicted nearby, and you should seek shelter immediately.
• All Clear: When conditions are determined safe, three 5-second horn blasts (two seconds apart) will sound, and the strobe lights will turn off.
PLEASE NOTE
• Horn alerts only sound between 7 a.m. and 8 p.m.
• If lightning remains a threat after hours, strobe lights will stay on until 10 p.m.
HGRD employees cannot manually alter the system. Everyone should be aware that even if weather conditions look safe, the system won’t give an “all clear” signal until it is warranted.
For real-time updates from any location, visit our Thor Guard webpage at https://360.thormobile.net/heronsglencc/tv/. We encourage you to bookmark the link on your mobile device or desktop for easy access. It’s also available through our Herons Glen mobile app.
Stay safe and weather-aware!
