The Seminole County Office of Emergency Management endorses the use of weather alert radios as the primary means to notify the public about severe weather.
Weather alert radios can alert you 24 hours a day in your home, school, or office, about severe weather conditions or other threats to public safety, specifically in the middle of the night when you are not monitoring TV or radio.
Weather alert radios vary in cost (with basic, hand-crank models beginning around $15) and are available at most retail electronic stores.