Agree, and also agree with cva66snipe.
The best part of scanners is during things like tornado weather. You can get several minutes heads up by monitoring the storm watchers on HAM Radio frequencies. Local NOAA Offices monitor it as well and when they say one has been site it's usually a watchers report.
As far as Law Enforcement comms go the 800MHZ Trunking Systems are harder to follow and scanners that can monitor them usually need to be programed by a computer where you buy it for best performance. I'm in a rural area so our Sheriff, VFD, Rescue Squad, and Paramedics, either use 460 MHZ or 453 MHZ.
BTW an old analog TV antenna if you invert the elements 90 degrees making the elements stand vertical rather than horizontal makes a great outdoor scanner antenna :>} You can run two scanners off one antenna if you use a TV signal splitter with an old analog TV signal amp.