Do you have a tornado alert ? I bought one in Florida last year , then again I also have my own weather station ,I am the very definition of nerd,by station reports to my computer my computer (a TNC is like a modem for a radio) then my radio sends it to NWS AND NHC , I have been a certidiedin SkyWarn spotter for last 30 years. We had a micro burst about 5 years ago in the summer , NWS at first denied it saying nothing showed on radar ,then they saw the damage and examined my stations data and changed there mind confirming it , in normal mode it sends data every 15 minutes if wind speed or rainfall exceeds a certain level it triggers emergency mode and sends data every 5 minutes ,I live in a crazy spot between 2 radars neither really covers the town ,but between them they can come close to knowing what's happening with my real time actual data .I measur for everything from soil conditions to solar radiation. The tornado alert measures electrical activity in the atmosphere they have been in use for about 40 years in aircraft, but they are new to the home and consumer market , it listens and learns what's "normal" activity for 30 mile area , when it detects the electrical noise that happens before a tornado it has a strobe and sounds an alarm. My catheter rep,is out of OK and loves to chat with me about meteorology and weather ,after rebuilding her house several times she has been through the wringer . The positive side of insomnia the weather can't sneak up on us !